Valve for regeneration plant for heat oxidizing

FIELD: power engineering.

SUBSTANCE: valve comprises rotatable housing provided with passage, outer unmovable ring seal of the housing, ring seal between the rotatable housing and outer unmovable ring seal of the housing that has bore made for permitting gas to flow to the passage or from the passage. The ring seal is movable with respect to the outer ring seal of the housing. The passage and the bore are made for permitting receiving the compressed gas to provide continuous sealing between the outer ring seal of the housing and ring seal when the housing rotates. The valve is additionally provided with means for permitting gas to flow through the radial passage and between the ring seal and outer unmovable ring seal of the housing and setting ring connected with the rotatable housing and locking ring that is mounted at a distance from the setting ring and connected with the rotatable housing. The ring seal is interposed between the setting ring and locking ring.

EFFECT: simplified structure and enhanced efficiency.

16 cl, 30 dwg

 

For decomposition of volatile organic compounds (VOCS)contained in large emissions of low concentration of industrial enterprises and power plants, are commonly used regeneration installation thermal oxidation. Such oxidation unit, generally require high temperature oxidation to achieve a high degree of decomposition of VOCS. It is a dirty process gas is a substance to be processed, which is heated before oxidation to achieve high efficiency heat recovery. In a typical case, for preheating the gases used heat-exchange column. This column is usually provided with a packing of heat exchange material having a sufficient heat resistance and mechanical strength, and sufficient thermal mass. In operation, process gas is supplied through the pre-heated heat-exchange column, which, in turn, heats the process gas before the temperature reaches the temperature oxidation LOS or near this temperature. This preheated process gas is then blown into the combustion zone where it is usually advised to complete any incomplete oxidation of the VOCS. The treated gas, which is now "clean", then sent from the zone of combustion through the same, Teploobmen the percent column or through the second heat exchange column.

When the hot oxidized gas passes through the column, it passes its heat to the heat exchange medium in the column, the heat exchange medium so that it becomes possible to carry out preliminary heating of other portions of the gas before the oxidation treatment. Typically, regeneration installing thermal oxidation has at least two heat-exchange columns, in which alternately serves technological and processed gases. This process is carried out continuously, allowing you to effectively handle a large volume of process gas.

The work of regeneration oxidation unit can be optimized by increasing the efficiency of decomposition of VOCS and by reducing operating costs and capital investment. On the occasion described in the technical literature related to improving the efficiency of decomposition of LOS, it should be noted that they involve the use, for example, of such means as improved oxidation and purging systems (for example, safety cameras), as well as three or more heat exchangers for processing raw gas volume within the oxidation unit during the switching. Operating costs can be reduced by increasing the efficiency of heat recovery and reducing the pressure drop on the set is VCE oxidation. Operating costs and capital expenditures can be reduced by proper design, installation oxidation and by selecting a suitable heat transfer material gaskets.

An important element of effective oxidation unit is a valve system that is used to switch the flow of process gas from one heat exchange column to another. Any leakage of the raw process gas through the valve system will reduce the efficiency of the installation. In addition, during the switching valve may cause disturbances and fluctuations in pressure and/or flow in the system, which is undesirable. The wear of the valves can also cause problems, especially due to the high frequency switching of the valves in the structures associated with the regenerative thermal oxidation units.

In one conventional design with two columns uses a pair of Poppet valves, one of which is associated with the first heat exchange column, and the other from the second heat exchange column. Although Poppet valves and have a proper fast switching during the cycle, this will inevitably leak raw process gas through the valves. For example, during the cycle in double-chamber installation oxidation comes a point when the inlet valve (inlet valve), and the exhaust is LAPAN (exhaust valves) are partially open. At this point there is nothing to prevent the process gas stream, and this stream passes directly from the inlet to the outlet without any processing. Because there are also channels that are associated with the valve system, the volume of raw gas inside Poppet valve, and within the associated channels represents a potential leakage volume. Since the diversion of untreated process gas through the valve retains the release of the gas from the device in raw form, so this leak, and will significantly reduce the efficiency of the decomposition provided by the installation. In addition, conventional valves lead to pressure surges during switching, which increases the possibility of leakage.

A similar possibility of leakage exists in the presence of conventional rotary valves. In addition, such systems rotary valves typically include numerous internal bulkheads, which can leak over time, and their manufacture and maintenance are expensive. For example, figure 1 in U.S. patent No. 5871349 depicts the installation of oxidation with twelve cameras with twelve metal walls, each of which could become weak, prone to leak.

Therefore, the goal of N. the present invention is to provide a regenerative oxidation unit, which has the simplicity and cost effectiveness of dual-chamber devices, as well as the smooth control and high efficiency removal LOS inherent to rotary valves, and thus will not have the disadvantages of known devices and systems.

To minimize wear, it was necessary to create a valve having an improved characteristic of the seal.

The technical result is achieved by a valve containing a rotatable housing having a channel configured to receive gas, stationary outer ring body seal, o-ring seal between the rotary body and the stationary outer annular seal body having a counterbore, designed to ensure the passage of gas into the channel or that channel, with o-ring seal made movable with respect to the outer ring body seal, and the specified channel and the bore hole is configured to receive compressed gas to ensure a continuous and not a friction seal between the outer ring body seal and o-ring seal during rotation of the housing.

The valve further comprises a means to ensure the passage of gas through the radial channel and between the ring seal and the outer annular body seal.

LAPAN also contains the adjusting ring, coupled with the rotary body, and the retaining ring, spaced from the mounting ring and connected to the swivel housing, with o-ring seal is located between the snap ring and retaining ring, and the reference arc between the ring seal and snap ring.

Preferably, the annular seal includes a second counterbore made with the possibility of receiving gas from the radial channel with the provision of the offset ring seal in the direction of the reference arc.

In one of the embodiments of the invention the valve includes a first channel valve and the second channel of the valve separated from the first channel of the valve, and a flow distributor having a passage inlet and outlet loop-through channel, and a flow distributor is configured to move relative to the first and second channels of the valve between the first position where the first channel of the valve is communicated through the fluid passing from the inlet channel and the second channel of the valve is communicated through the fluid from the outlet through the channel, and a second position in which the first channel of the valve is communicated through the fluid from the outlet through the channel and the second channel valve is communicated through the fluid from the inlet through the channel, pricesrisperdal stream contains a blocking surface, which blocks flow through the first portion of the first channel of the valve and through the second portion of the second channel of the valve when the flow distributor is located between the first and second positions.

The technical result is also achieved by means of the valve containing the rotatable housing, the outer ring body seal, o-ring seal between the rotary body and the outer o-ring seal housing, and a collector, which is located around the outside of the ring body seal, and which is supplied with compressed gas around the o-ring seals to ensure continuous and non-friction seal between the outer ring body seal and o-ring seal during rotation of the housing.

The technical result is also achieved through the regeneration of installation thermal oxidation intended for processing gas containing the combustion zone, the first heat transfer layer containing a heat-exchange medium and is connected with the zone of combustion, the second heat transfer layer containing a heat-exchange medium and is connected with the zone of combustion, the rotary switching valve for switching the direction of gas flow between the first and second heat transfer layers, and the rotary switching valve includes a radial channel, limited external annular seal is m hull, ring, coupled with the rotary body, and the retaining ring, spaced from the mounting ring and connected to the rotary body, and an annular seal located between the snap ring and retaining ring and communicates through a fluid medium with a radial channel, and the annular seal has a counterbore providing a flow of gas in a radial channel or that channel and the formation of an airtight seal with the outer ring body seal.

Preferably, the rotary switching valve further comprises a first channel valve which is connected through a fluid medium to the first heat exchanger layer, and the second channel of the valve separated from the first channel of the valve and is connected through a fluid medium to the second heat exchanger layer, regeneration installing thermal oxidation further comprises a distribution chamber with the cold surface containing at least one guide wall for separating the first and second channels of the valve on many cameras. Each of the cameras congruent relative to another.

The rotary switching valve is preferably placed in the reservoir with the inlet channel of the manifold and outlet manifold, and a rotary switching valve with the contains a passage inlet and outlet loop-through channel, this inlet port of the manifold is communicated through the fluid from the inlet through the channel rotary switch valve and an exhaust channel manifold is communicated through the fluid from the outlet through the channel rotary switch valve.

Regeneration installing thermal oxidation according to the invention includes a tool to ensure the passage of gas in the radial channel and between the ring seal and the outer o-ring seal housing, the tool actuator for rotating the switching valve.

When this rotary switching valve includes a support arc located between the snap ring and snap ring, and the ring has a protrusion, and the reference arc has a groove to accommodate the specified extension.

The technical result is also achieved by means of a rotary valve for directing fluid flow containing a rotatable housing, a stationary outer ring seal housing, spaced from the swivel housing and bounding together with the housing sealing the space, sealing means located between the rotary body and a stationary annular housing seal in the sealing space, and sealing means configured to receive gas into the sealing space is ncte and offset to the fixed ring housing seal to ensure continuous and non-friction seal between the stationary ring seal housing and seal means during rotation of the housing.

According to the present invention, a regenerative installation oxidation contains only one switching valve seal. The valve according to the present invention has excellent sealing characteristics and minimizes wear. This valve has a sealing plate, which restricts two cameras, with each camera is a flow channel that leads into one of the two regeneration layers of the oxidation unit. This valve also includes a change-over valve flow, which provides alternating the direction of the intake or output process gas through channels to each side of the sealing plate. The valve can operate in two modes: stationary mode and the navigation mode of the valve. In stationary mode uses a gas-tight seal to minimize or prevent leakage of process gas. This gas-tight seal performs its function during movement of the valve. The valve is a compact design that allows you to exclude channels that are required in conventional designs. This gives a smaller volume of process gas during cycles, resulting in less dirty gas remains untreated during cycles. A corresponding deviation of the flow minimizethe is or eliminates leakage of untreated process gas through the valve during switching. The use of only one valve instead of two or four, as usual, greatly reduce the area requiring sealing. The geometry of the switching valve flow reduces the distance and the number of "turns", passable process gas, as the flow distributor can be placed close to the heat exchange layers. This reduces the amount of captured raw gas during the switching valve. As the process gas passes through the same channels of the valve in the cycle of intake and release cycle, the distribution of gas in heat exchange layers is improved.

In the structures associated with the regeneration thermooxidation, is achieved by switching the valve with minimal pressure fluctuations, excellent seal and minimal or non-existent bypass flow. Due to the exclusion of the bypass flow during switching can be excluded usual catching camera used to store the amount of raw gas in the system during switching, resulting in significant cost reduction.

Figure 1 presents a perspective image regeneration installation thermal oxidation in accordance with one embodiment of the present invention;

figure 2 presents a perspective image with a spatial what OTDELENIE details part of the regeneration of installation thermal oxidation in accordance with one specific embodiment of the present invention;

3 shows the perspective representation of the distribution chamber from the cold surface in accordance with the present invention;

4 shows a perspective image of the bottom channels of the valve in accordance with the present invention;

figure 5 presents a perspective image change-over valve with thread allocator in accordance with the present invention;

on figa presents a cross section of the switching valve with thread allocator in accordance with the present invention;

figure 6 presents a perspective image of the drive mechanism of the switching valve in accordance with the present invention;

on figa, 7, 7C and 7D presents the notional diagram of the flow through the switching valve in accordance with the present invention;

on Fig presents a perspective image of a portion of the flow distributor in accordance with the present invention;

figure 9 presents a top view of the sealing plate in accordance with the present invention;

on figa presents a cross-section of part of the sealing plate shown in Fig.9;

figure 10 presents a promising position of the shaft of the distributor flow in accordance with the present invention;

figure 11 presents the cross-section of the rotary ka is Ala in accordance with the present invention;

on figa presents a promising image retaining ring in accordance with the present invention;

on FIGU presents the cross-section of the locking ring in accordance with the present invention;

on figs advanced image setting rings in accordance with the present invention;

on fig.11D presents the cross-section of the mounting ring in accordance with the present invention;

on five presents the perspective image reference arc plate in accordance with the present invention;

on fig.11F presents the cross-section of the reference arc plate in accordance with the present invention;

on fig.11G presents a perspective image of a sealing ring in accordance with the present invention;

on fign presents the cross-section of the sealing ring in accordance with the present invention;

on Fig presents the cross-section of the groove in the sealing ring in accordance with the present invention;

on Fig presents the cross-section of the lower part of the drive shaft in accordance with the present invention;

on Fig presents the cross-section of the locking and adjusting rings to seal in accordance with the present invention;

on Fig predstavliaiushchaia the image retainer and the adjusting rings to seal in accordance with the present invention;

on figa presents the cross-section of the rotary channel in accordance with an alternative embodiment of the present invention; and

on FIGU presents the cross-section of the rotary channel in accordance with another alternative embodiment of the present invention.

Figure 1 and 2 shows a two-chamber regenerative thermal oxidation unit 10 (catalytic or non-catalytic), installed as shown on the drawings, on the frame 12. Installation 10 oxidation includes a housing 15, which has the first and second heat exchange chamber, communicating with which is located in the center of the zone of combustion. With the zone of combustion may be associated furnace (not shown)and the frame 12 can be mounted blower combustion air feeding the combustion air to the furnace. The zone of combustion includes a bypass exhaust channel 14 which is connected through a fluid medium with an exhaust tower 16, in a typical scenario leading to the atmosphere. In the Cabinet 11 managing placed the control devices for installation, and the wardrobe in the preferred embodiment, is also located on the frame 12. In front of the Cabinet 11 is a fan (not shown)mounted on the frame 12 and is designed to force-feed process gas in the installation 10 oxidation. The housing 15 includes an upper chamber or the cover 17, the ima is the relevant one or more doors 18 for access, providing operator access into the housing 15. Specialists in the art will understand that the foregoing description of the oxidation unit is shown only for illustrative purposes within the scope of the present invention are possible other designs, including the installation of oxidation, in which there is more or less two cameras, installation oxidation with a horizontally oriented camera (horizontally oriented cameras), and catalytic oxidation.

Distributing chamber 20 from the cold surface forms the base chassis 15, as best seen in figure 2. In the distribution chamber 20 from the cold surface is provided by a suitable supporting bars 19 serving as a support of the heat exchange matrix in each heat exchange column, as described in more detail below. In the depicted embodiment, the heat-exchange chamber separated by a dividing wall 21, which is preferably insulated. In addition, in the depicted embodiment, the flow through the heat exchange layers is vertical; process gas to flow in these layers of the channels of the valve located in the distribution chamber 20 from the cold surface, passes upward (toward the lid 17) in the first layer falls within the zone of combustion chamber connected to the first layer extends from the zone of combustion in the WTO the second camera, passes down through the second layer towards the distribution chamber 20 from the cold surface. However, specialists in the art will understand that suitable are other orientation, including horizontal layout, for example such that the heat exchange columns facing each other and separated situated in the centre of the zone of combustion.

Figure 3 shows more detail of the distribution chamber 20 from the cold surface. Distributing chamber 20 has a floor 23, which is preferably inclined downward from the outer walls 20A, 20B to the channels 25A-25F valve, allowing the flow of gas. On the floor 23 posted by many dividing the guide walls 24 and bulkheads 124A beaches, 124D, E and N cameras. Dividing the guide walls 24 separate channels 25A-25F valve and reduce the pressure fluctuations during the switching valve. Bulkheads cameras share the heat exchange chamber. Bulkhead chambers 124A beaches and 124D, and E and N can be respectively connected to each other or may be located separately. Between the bulkhead chambers 124A beaches and the guide wall 24 is limited to the channel 25A of the valve; between the guide walls 24 and 24C limited channel 25V valve; between the guide wall 24C and bulkhead 124D cameras limited channel 25S valve; between peribonka E cameras and the guide wall 24F limited channel 25D valve; between the guide walls 24F and 24G limited channel 25TH valve, and between the guide wall 24G and bulkhead N cameras limited channel 25F valve. The amount of separation of the guides of partitions depends on the number of channels of the valve. In the depicted preferred embodiment, there are six channels 25A-25F valve, although you could use more or fewer channels. For example, in the embodiment, which uses only four channel valve, you must install only one separator guide wall. Regardless of the number of channels of the valve and the corresponding separation of the guide walls of the channels of the valve in the preferred embodiment, have the same form for symmetry.

The height of the guide walls is preferably such that the upper surfaces of the guide walls define a horizontal plane level. In the depicted embodiment, the portion of the guide walls, the most remote from the channel of the valve, is the shortest to negotiate with the floor 23 of the distribution chamber from the cold surface, which, as mentioned above, has a slope of. Horizontal plane level, is designed suitable for placement of heat transfer medium in each heat e is constant column what's more discussed below. In the depicted embodiment, with six channels of valve guide walls 24, 24C, 24F and 24G are preferably inclined at an angle of 45° to the longitudinal center line L-L of the distribution chamber 20 from the cold surface, when they depart from the channels 25 of the valve, and then are essentially parallel to the longitudinal center line L-L, when they go to the outer walls 20A and 20B, respectively. The guide walls 24A, 24D, 24TH and 24N preferably inclined at an angle of 22.5° to cross the center line N-N of the distribution chamber 20 from the cold surface as they pass from the channels 25 of the valve, and then are essentially parallel to the transverse center line N-N, when they pass to the external walls 20C and 20D, respectively.

In a preferred embodiment, the guide walls 24, 24C, 24F and 24G, and walls 20A, 20B, 20C and 20D of the distribution chamber 20 from the cold surface include edge protrusion 26, which projects slightly below the horizontal plane bounded by the upper surface of the guide walls. On the ledge 26 is installed on the control grid 19 of cold surface (figure 2), which in turn serves to support the heat transfer medium in each column. If heat transfer environment includes the environment, the gasket which is sudestada arbitrarily, such as ceramic pads, areas or items of different shape, the guide walls can be above, to separate the environment. However, a perfect seal between the guide walls is not required, as it usually is in the construction of rotary valves.

4 shows the bottom view channels 25A, 25V, 25C of the valve. The plate 28 has two opposite symmetrical holes 29A and 29B, which together with the guide walls 24 limit the channels of the valve. Each channel 25 of the valve is one installed on the choice of the rotary blade 27. Each rotary blade 27 has a first end attached to the plate 28, and a second end, spaced from the first end and attached to the guide wall 24 on each side (as best seen in figure 3). Each rotary blade 27 extends from its first end to its second end and tilted up at an angle, and then its surface is approaching the horizontal plane, as shown by the position 27A in figure 3 and 4. Function rotary blades 27 are in the direction of the process gas stream leaving the channels of the valve, in the direction from these channels valve that facilitates the distribution of the distribution chamber 20 from the cold surface in the process. Uniform distribution of the bookmark in the distribution chamber 20 from the cold surface provides uniform distribution of heat transfer environment to achieve optimum efficiency of heat exchange.

Figure 5 and 5A shows the dispenser 50 thread posted in the manifold 51 having an inlet entrance channel 48 for process gas and exhaust a passage 49 to the process gas (although constructive element 48 may be an outlet channel, and 49 - inlet channel, in this description and purpose of illustration will be referred to an implementation option, the specified first). The dispenser 50 flow preferably includes a hollow cylindrical drive shaft 52 (figa, 10), which is connected to the drive mechanism, more discussed below. To the drive shaft 52 connected to the rotary body 53, partially having the shape of a truncated cone or having the form of a truncated cone. The rotary body 53 includes a locking plate having two opposite sealing surfaces 55, 56 in the form of sectors, each of which is connected with another through the district outer edge 54 and passes outward from the drive shaft 52 at an angle of 45°so that the cavity is bounded by these two sealing surfaces 55 and 56 and the outer edge 54, restricts the first path or the first pass gas channel 60. Similarly, the second path or the second lock channel 61 gas limited opposite the first flow channel sealing surfaces 55, 56 and three inclined side plates, namely next to each on the UGA inclined side plates 57A, 57B and the Central inclined side plate S. Sloping side plates 57A, 57B separate entrance channel 60 from the flow channel 61. The upper part of these shafts 60, 61 are designed to align with the configuration symmetrical holes 29A, 29B in the plate 28, and in the assembled installing each passing channel 60, 61 are aligned with the corresponding holes 29A, 29B. A passage 61 is communicated through the fluid only from the inlet channel 48, and a passage 60 is communicated through the fluid only from the outlet channel 49 through the distribution chamber 47 regardless of the position of the distributor 50 flow at any given point in time. Thus, the process gas entering the reservoir 51 through the inlet channel 48, passes only on the flow channel 61, and the process gas coming from the channels 25 of the valve passes only into the exhaust channel 49 through the distribution chamber 47.

To the plate 28, bounding the channels 25 of the valve (4)connected to the sealing plate 100 (Fig.9). In a preferred embodiment, between the upper surface of the distributor 50 and thread sealing plate using air seal, which is discussed further below. The flow distributor is configured to rotate by the drive shaft 52 about the vertical axis, and the e relative to the fixed plate 28. Such rotation causes the movement of the sealing surfaces 55, 56 with the achievement of the provisions of blocking alignment with the portions of the holes 29A, 29B and the way out of this situation, as described below.

Figure 6 shows a suitable drive mechanism, designed for the propulsion of the distributor 50 thread. The mechanism 70 of the actuator includes a base 71 and is mounted on the frame 12 (Fig 1). To the base 12 connected to a pair of rack and pinion bearings 73A, B, and a cylindrical bearing 74. On the cylindrical bearing 74 mounted cylinders 75A, 75V, which actuate the respective rails 76A, B. Each rail has many grooves, the shape of which corresponds to direct the teeth of spur bevel gears 77. The drive shaft 52 of the distributor 50 flow connected to the cylindrical spur gear wheel 77. The work cylinders 75A, 75V moves bonded with them the respective rails 76A, B, in turn, provides for the movement of rotation of the spur bevel gears 77 which rotates around the vertical axis of the drive shaft 52 and attached to the dispenser 50 thread. In a preferred variant configuration rack and pinion, causing rotation of the drive shaft 52 back and forth at 180°. However, experts in this field of technology is eumat, that within the scope of the present invention there may be other structures, including the actuator, in the presence of which is a full turn of the thread allocator 360°. Other suitable drive mechanisms include hydraulic actuators and mechanisms of step motion.

On figa-7D conditionally shows the direction of flow during normal cycle switching valve having two inlet port and two outlet channels. In these diagrams the camera And is the inlet chamber and the chamber In the exhaust chamber oxidation with two columns. On figa valve shown in its fully open stationary position. Thus, the channels 25A and 25V are in the intake mode in the fully open position, and channels 25C and 25D in release mode in the fully open position. Process gas enters the chamber And through the channels 25A and 25V, passes through the heat exchanging medium in the chamber A, where it is heated, passes through the zone of combustion chamber connected with the camera And where oxidize any volatile components that have not yet oxidized, is cooled as it passes through the chamber In the chamber connected with the combustion zone, and then exits through the channels 25C and 25D in the exhaust tower opening, for example, into the atmosphere. The normal duration of this mode is from 1 to 4 minutes, and the site is citicolina duration is 3 minutes.

Figure 7 depicted In the beginning of the regime change, when the rotation of the valve 60°that usually lasts from approximately 0.5 seconds to approximately 2 seconds. In the position shown, the channel 25 In the valve closed, so the flow into the chamber And or out through this channel is blocked, and the channel 25S valve is closed, so that the flow in the camera In or out through this channel is blocked. Channels 25D and 25TH valve remain open.

When the rotation of the distributor of flow continued for another 60°blocked now are the channels 25A and 25D, as shown in figs. However, the channel 25V is now open, but is in release mode, resulting in possible only the flow of process gas from the chamber And through the channel 25V into the extraction tower or similar structure. Similarly, the channel 25S is now open, but is in the intake mode, resulting in possible only the flow of process gas into the chamber (not from the camera, as was the case in release mode, shown in figa).

The final turn of the thread allocator 60° depicted on fig.7D. Luggage And is now in release mode in the fully open condition, and the camera is in the mode of intake in the fully open condition. Thus, all channels 25A, 25V, 25C and 25D are fully open, and the valve flow is at rest. When you need to change the direction of the eye on the back, the thread allocator preferably rotate in the position shown in figa, by turning 180° in the opposite direction, in which occurred the previous turn, though within the scope of the present invention is a 180° in the same direction as the previous rotation.

System with six valve holes, shown in figure 3, can work in a similar way. Thus, each channel of the valve would correspond to turning on the 45°60°. If the channels 25A, 25V and 25C of the valve shown in figure 3, are located in the intake mode and fully open, and the channels 25D, 25TH and 25F are in release mode and fully opened, then the first stage in the cycle is a rotation of the valve 45° (clockwise), blocking the flow in the channel 25C of the valve and out of the channel 25F valve. The channels 25A and 25V valve remains in the open position in the intake mode, and channels 25D and 25TH valve remains in the open position in release mode. When the thread allocator does turn on additional 45° clockwise channel 25C of the valve is now in the open position in release mode, the channel 25V valve is blocked, and the channel 25A of the valve remains in the open position in the intake mode. Similarly, the channel 25F valve is now in the open position in the intake mode, can the l 25TH valve is blocked, and channel 25D valve remains in the open position in release mode. When the thread allocator does rotate another 45°, channels 25s and 25V valve will now be in the open position in release mode, and the channel 25A of the valve is blocked. Similarly, channels 25F and 25TH valve will now be in the open position in the intake mode and channel 25D is blocked. In the final position, the flow distributor is rotated an additional 45° and stopped when all the channels 25A, 25V and 25C of the valve are in the open position in release mode, and all channels 25D, 25TH and 25F of the valve are in the open position in the intake mode.

It should be noted that one significant advantage of the present invention compared to conventional rotary valves is that the valve flow remains stationary during most of the time. He moved only during a switching cycle mode with the inlet to the outlet, and this movement lasts only seconds (in the General case is in the amount of from about 0.5 to about 4 seconds compared to minutes, during which the valve is fixed, with one camera - the camera or the camera is in the intake mode and the other in release mode. In contrast, many of the conventional rotary valves are in d is igenii constantly, that accelerates the wear of the various elements of the unit and may cause leakage. An additional advantage of the present invention is the presence of a large physical space that separates the gas that is purged from the gas that has not yet cleared, as in the valve and in the camera (this space 80 (figure 3) between the bulkheads A and 124D cameras and bulkheads N and 124A beaches), and the presence of a double wall formed by bulkheads A, N and 124A beaches, 124D cameras. In addition, since the valve has only one Executive system, this valve is to function successfully, if it moves quickly or slowly, in contrast to the known technical solutions, the implementation of which several Executive systems must work together. More specifically, if one Poppet valve in the known installation, for example, will be slower than the other, it may leak or loss of process gas stream or the creation of a large pressure pulse.

Another advantage of the present invention is the resistance that is present during the switchover operation. In conventional valve systems, such as the aforementioned system of Poppet valves, the flow resistance reaches zero, when both valves are partially open (i.e. when one closes and the other opens). As a result, the OK gas per unit of time can actually increase additionally, increasing the leakage of such gas through both partially open valve during switching. In contrast, since the flow distributor according to the present invention gradually closes the inlet channel or the outlet channel), covering only part of them at some point, the resistance is not reduced to zero during the switch, but actually increases, thereby limiting the flow of process gas through the channels of the valve during switching and minimizing leakage.

Now with reference to figure 5, 8 and 9 will be described the preferred option implementation valve seal. The dispenser 50 of the flow of moving air cushion to minimize or eliminate wear during the movement of the distributor flow. Specialists in the art will understand that could be used and other gases in addition to air, although for illustrative purposes, this description is given with reference to the air. Air cushion not only serves to seal the valve, but also provides movement of the distributor flow without friction or essentially without friction. Injection supply system, such as fans and the like, which may be the same as the fan used to supply air for combustion to the furnace combustion zone or other supplies air to drive the efforts of the shaft 52 of the distributor 50 flow through the appropriate channels of supply (not shown) and a distribution chamber 64. Alternatively, you can use a negative pressure (vacuum). As best seen in Fig (where the illustrated system, which uses positive (excess) pressure), the air flows from the input channels in the drive shaft 52 above the base 82 of the drive shaft 52, which is connected to the mechanism 70 of the actuator. The exact location of openings (holes) 81 not imposed specific restrictions, although in the preferred embodiment, the holes 81 are arranged symmetrically around the shaft 52 and are of the same size to ensure uniformity. The compressed air then passes up through the shaft, as shown by the arrows on Fig, and part of the air falls into one or more radial channels 83, which are communicated with the annular seal located in the annular rotary channel 90, more discussed below. Part of the air that does not fall into the radial channels 83, continues to rise on the drive shaft 52 until then, until he reaches the shafts 94, which distribute the air in the channel having a semicircular part 95 and part, limited sectorialisme wedges or sealing surfaces 55, 56. In the case of a system that uses a negative pressure (vacuum), the flow would take place in the opposite direction.

The blocking plate of the distributor 50, the flow is, in particular the sealing surfaces 55, 56 and the outer annular edge 54, made with lots of holes 96, as shown in figure 5. Compressed air from the pipe 95 is ejected through these holes 96, as shown by the arrows on Fig, and creates an air cushion between the upper surface of the distributor 50 flow and stationary sealing plate 100, shown in Fig.9. The sealing plate 100 includes an annular outer edge 102 having a width corresponding to the width of the upper sealing surface or the outer annular edge 54 of the distributor 50 thread, and a couple sectoriality elements 105, 106, the shape of which corresponds sectoralism the wedges or sealing surfaces 55, 56 of the distributor 50 thread. This plate is agreed upon (and connected) with the plate 28 (figure 4) channel valve. In the hole 104 put the finger 59 of the shaft (Fig), connected to the dispenser 50 thread. The lower side of the annular outer edge 102 facing the flow distributor includes one or more annular grooves 99 (figa), which are aligned with the holes 96 in the locking plate of the distributor 50 thread. In the preferred embodiment, there are two concentric series of grooves 99 and two corresponding series of holes 96. Thus, the grooves 99 provide air discharge holes 96 in the upper sealing surface or on the outside of the ring edge 54 for forming an air cushion between the surface 54 and the annular outer edge 102 of the sealing plate 100. In addition, the air discharge holes 96 in sectoriality elements or sealing surfaces 55, 56 forms an air cushion between the sealing surfaces 55, 56 and sectorialisme elements 105, 106 of the sealing plate 100. These air cushion minimize or prevent leakage of the process gas, which is not cleaned, the flow of clean process gas. A relatively large sealing surface and sectoriality elements as the dispenser 50 of the thread and the sealing plate 100 provides a long path through the top of the distributor 50 thread that would have to go untreated gas to leak. Since the thread allocator immobile for most of the time in the process, created an impenetrable air cushion between all surfaces of the valve. When you want the thread allocator moved, airbag, used to seal the valve, also performs the function of ensuring the elimination of any high pressure contact, which could occur due to wear between the valve 50 and thread sealing plate 100.

Compressed air is preferably supplied from the fan, but not from a fan, from which the process gas is supplied in the installation, which uses the valve, so that pressure is the sealing air more than the pressure of the intake or output process gas, which thereby provides a reliable seal. However, as noted above, it is possible to use the system, which provides a negative pressure (vacuum).

The flow distributor includes a rotary channel 90, which is shown in figure 10 and 11. The rotary body 53 having the shape of a truncated cone made with the possibility of rotation relative to the stationary outer ring seal 659, which functions as an external o-ring seal. External o-ring seal 659 includes an external annular flange 111 is used to center the seal 659 and clamp it to the manifold 51 (see also figa).

Figure 11 detail depicts one particular implementation of an improved sealing system in accordance with the present invention. The retaining ring 664, preferably of steel, is shown attached to the rotary body 53 having the shape of a truncated cone. This locking ring 664 is preferably a split ring, as shown in the perspective image presented on figa, and has such a cross section that is shown in figv. The presence of a cut on the ring allows its installation and removal. On Fig shows the retaining ring, picral the TES to the rotary body 53, having the form of a truncated cone, the screw 140 of cylinder key. You can use other possible means mounting the locking ring 664. In a preferred embodiment, the rotary body includes a groove 700 (Fig) for the proper location of the snap ring in the right place.

Opposite the retaining ring 664 posted by ring 091 shown in figs, 11D, 13 and 14. Ring 091 is also connected to the rotary body 53 by a screw 140' of cylinder key and turning the casing groove for the proper location of the installation ring 091.

In the depicted embodiment, providing for the rotation of the rotary body around the vertical axis, the mass of o-ring seals 658 may cause wear when it slides over the mounting ring 091. To reduce or eliminate this wear, ring 091 performed with the tab 401 formed along the circumference of the ring and in the preferred embodiment, located at the center, as best seen in fig.11D. Made on the choice of the reference arc 663 plate has a groove 402 (file, 11F), the shape and location of which correspond to a protrusion 401, and reference arc in the assembled state sits on the ring 091, as shown in figure 11. The reference arc 663 plate is preferably made of a material the and, different from the one made of o-ring seal 658, to facilitate the functioning as a support. Suitable materials include bronze, ceramics or other metal different from the metal used as the material for the annular seal 658.

O-ring seal 658 is located between the locking ring 664 and the reference arc 663. As shown in fig.11G and 11N, o-ring seal 658 has a radial groove 403 made along its circumferential surface. On one edge of the ring seal 658 radial groove 403 terminates in a circumferential semi-circular configuration, which formed as a result of the distribution groove 145, when the annular seal 658 rests in the outer annular seal 659 enclosure, as shown in figure 11. Alternatively, you can use more than one radial groove 403. In the depicted embodiment, the annular seal 658 also has a counterbore 404 made communicating with a radial groove 403 and perpendicular to it. By means of pressure in the bore hole 404 creates a counterweight, whereby to prevent movement of the sealing ring 658 down under the action of its own weight. If the orientation of the valve was different, for example rotated 180°, the bore hole is 404 could be formed in the upper part of the annular seal 658. Alternatively, you can use more than one bore hole 404 in the upper or lower parts, or both. If the orientation was rotated, for example, 90°, the counterweight would be necessary. Since the annular seal 658 remains stationary while the body is also fixed, the seal 658 does not necessarily have to be circular, and other suitable shapes, such as oval and octagonal. O-ring seal 658 may be a single piece or may consist of two or more parts.

Since the annular seal 658 shifted to the outer annular seal 659 housing and remains stationary even when the dispenser 50 flow (as well as the retaining ring 664, reference arc 663 and ring 091) turns. Compressed air (or gas) passes through the radial channels 83, as shown by the arrows on 11 and into the radial groove 403 and counterbore 404, as well as in the distribution groove 145 between the o-ring seal 658 and stationary outer ring seal 659 housing, the clearance between the snap ring 664 659 case and in the gaps between the arc 663 and stationary outer ring seal 659 of the housing and the mounting ring 091 and stationary outer ring seal 659 enclosure. When the flow distributor is rotated relative to podviznogo ring seal 659 housing, the air in this gap causes an increase in pressure in the respective spaces, creating a continuous and non-friction seal. Distribution groove 145 divides the outer surface of the ring seal 658 into three zones, two of which are in contact with the bore hole, passing out, and the Central zone is under pressure.

Due to the use of only one node of the ring seal are excluded forces, which exert a compression or traction effect on the double piston o-ring seals. In addition, the savings due to the fact that a reduced amount of details and can foresee only one ring of larger cross section, because of what it can consist of elements with a more stable size. The ring can be cut into two halves for easy installation and removal. In recessed holes 405 (Fig) can be provided compression springs at the site of the incision, in order to ensure the application is directed outward force rings to the bore hole.

On Fig shows how the distribution chamber 64 from which the compressed air in the shaft 52, is sealed with the drive shaft 52. The seal is the same as described above for the rotary channel, except that the seals are not the lawn is they have water resistant, and for each seal above and below the distribution chamber 64, you should use only one piston ring. When using sealing set, for example, above the distribution chamber 64, form a C-shaped inner ring seal 216 due to the formation of the Central groove in the camera. A stationary annular cylindrical wall 210, which functions as an external annular seal includes an external annular flange 211 used for the alignment of the walls 210 and clamp it to the distribution chamber 64. In the groove made in the C-shaped inner annular seal 216 posted stationary piston ring 212 is shifted to the wall 210. Clearance between piston ring 212 and the bore hole of a C-shaped inner seal 216, and the gap between the C-shaped inner seal 216 and the outer cylindrical wall 210 compensate for any movement of the drive shaft 52 due to thermal expansion, etc. On the opposite side of the distribution chamber 64 use similar cylindrical wall 310, C-shaped inner seal 316 and piston ring 312, as shown in Fig.

On figa depicts an alternative implementation, which includes the addition in the form of a flexible seal 710, 711, installed either on a swivel arm, or the and the stationary sealing ring. This particular exercise helps reduce the amount of seal gas required for sealing.

On FIGU depicts an alternative implementation, which eliminates the presence of the sealing gas seal, but instead the gas is directed outside of the site through pipe 720, located around the bore hole stationary casing, as shown in the drawing. When operating in the first mode, raw (dirty) process gas passes into the inlet channel 48 through a passage 61 of the distributor 50 of the stream and falls into any corresponding channels 25 of the valve are in the open position and communicated with a through channel 61 in this mode. Then the raw process gas passes up through the hot heat transfer medium located in the distribution chamber 20 from the cold surface, and through the combustion zone, where the gas is processed, and has a clean gas passes down through a cold heat transfer medium in the second column, through the channels 25 of the valve communicating with a through channel 60, and out through the distribution chamber 47 and outlet 49. As soon as the cold heat exchange medium becomes relatively hot, and the hot heat exchange medium becomes relatively cold, is the roar is from the cycle, causing the actuation mechanism 70 of the actuator to rotate the drive shaft 52 and valve 50 thread. In this second mode, the raw process gas again passes into the inlet channel 48, entering through a passage 61 in the valve 50 of a stream and pass this channel is now connected with the other channels 25 of the valve, which was first reported by the fluid only with reduced channel 60, resulting in the raw process gas now goes into the hot heat transfer medium, and then through the combustion zone where the processing of the process gas. Then the purified gas is cooled as it passes down through a cold heat exchange medium through the channels 25 of the valve communicating with a through channel 60, and out through the distribution chamber 47 and outlet 49. If necessary, this cycle is repeated, typically every 0.5 to 7 minutes.

1. Valve containing a rotatable housing having a channel, a stationary outer ring body seal, o-ring seal between the rotary body and the stationary outer annular seal body having a counterbore, designed to ensure the passage of gas into the channel or that channel, with o-ring seal made movable relative to the external kolicevo the seal housing, and the specified channel and the bore hole is configured to receive compressed gas to provide continuous and non-friction seal between the outer ring body seal and o-ring seal during rotation of the housing.

2. The valve according to claim 1, which further comprises a means to ensure the passage of gas through the radial channel and between the ring seal and the stationary outer ring body seal.

3. The valve according to claim 1, which further comprises a ring connected with the rotary body, and the retaining ring, spaced from the mounting ring and connected to the swivel housing, with o-ring seal is located between the snap ring and retaining ring.

4. The valve according to claim 3, which further comprises supporting an arc between the ring seal and snap ring.

5. The valve according to claim 4, in which the annular seal includes a second counterbore made with the possibility of receiving gas from the radial channel with the provision of the offset ring seal in the direction of the reference arc.

6. The valve according to claim 1, which further comprises a first channel valve and the second channel of the valve separated from the first channel of the valve, and a flow distributor having a passage inlet and outlet prohodna the channel, moreover, the flow distributor is configured to move relative to the first and second channels of the valve between the first position where the first channel of the valve is communicated through the fluid passing from the inlet channel and the second channel of the valve is communicated through the fluid from the outlet through the channel, and a second position in which the first channel of the valve is communicated through the fluid from the outlet through the channel and the second channel of the valve is communicated through the fluid from the inlet through the channel, and the flow distributor includes a blocking plate, which blocks flow through the first portion of the first channel of the valve and through the second portion of the second channel of the valve, when the flow distributor is located between the first and second positions.

7. Valve containing a rotatable housing, the outer ring body seal, o-ring seal between the rotary body and the outer o-ring seal housing and the collector, which is located around the outer ring body seal and which is supplied with compressed gas around the o-ring seals to ensure continuous and non-friction seal between the outer ring body seal and o-ring seal during rotation of the housing.

8. Regenerative set is as thermal oxidation, intended for treatment of a gas containing the combustion zone, the first heat transfer layer containing a heat-exchange medium and is connected with the zone of combustion, the second heat transfer layer containing a heat-exchange medium and is connected with the zone of combustion, the rotary switching valve for switching the direction of gas flow between the first and second heat transfer layers, and the rotary switching valve includes a radial channel, limited external annular housing seal, ring, coupled with the rotary body, and the retaining ring, spaced from the mounting ring and connected to the rotary body, and an annular seal located between the snap ring and retaining ring and communicates through fluid with a radial channel, and the annular seal has a counterbore providing a flow of gas in a radial channel or that channel and the formation of a gas-tight seal with the outer ring body seal.

9. Regeneration installation of thermal oxidation of claim 8, in which the rotary switching valve further comprises a first channel valve which is connected through a fluid medium to the first heat exchanger layer, and the second channel of the valve separated from the first channel of the valve and reported posredstvennaia environment with the second heat exchanger layer, when this regeneration installing thermal oxidation further comprises a distribution chamber with the cold surface containing at least one guide wall for separating the first and second channels of the valve on many cameras.

10. Regeneration installing thermal oxidation according to claim 9, in which each of the cameras congruent relative to another.

11. Regeneration installation of thermal oxidation of claim 8, in which the rotary switching valve placed in the reservoir with the inlet channel of the manifold and outlet manifold, and a rotary switching valve includes a passage inlet and outlet loop-through channel with the inlet port of the manifold is communicated through the fluid from the inlet through the channel rotary switch valve and an exhaust channel manifold is communicated through the fluid from the outlet through the channel rotary switch valve.

12. Regeneration installation of thermal oxidation of claim 8, which further comprises a means to ensure the passage of gas in the radial channel and between the ring seal and the outer annular body seal.

13. Regeneration installation of thermal oxidation of claim 8, which further comprises means actuator for rotating the switching valve.

14. Regen is operating the installation of thermal oxidation of claim 8, in which the rotary switching valve includes a support arc located between the snap ring and snap ring.

15. Regeneration installation of thermal oxidation on 14, in which the adjusting ring has a protrusion, and the reference arc has a groove to accommodate the specified extension.

16. Rotary valve for directing fluid flow containing a rotatable housing, a stationary outer ring seal housing, spaced from the swivel housing and bounding together with the housing sealing the space, sealing means located between the rotary body and a stationary annular housing seal in the sealing space, and sealing means configured to receive gas into the sealing space and shift to a stationary annular housing seal to ensure continuous and non-friction seal between the stationary ring seal housing and seal means during rotation of the housing.



 

Same patents:

FIELD: combustion apparatus.

SUBSTANCE: method comprises using two periodically operating burners provided with regenerative heat-exchanging nozzles. Each of the burners provide combustion of gas or discharging the combustion products with their subsequent cooling in the heat-exchanging nozzle. The air for the combustion of gas and discharging the combustion products is supplied through the pipelines, heat exchanging nozzles and gas passages that connect the working space of the furnace with the heat-exchanging nozzles. The combustion regime changes for the regime of discharging the product of combustion and vise versa by connecting the air flow and combustion products by means of valve mounted on the pipelines. A portion of the discharged combustion products is directed to the inlet of the air duct device. The amount of combustion products should be sufficient for the decrease of concentration of oxygen in the air supplied for the combustion of gas down to 13-18%.

EFFECT: enhanced efficiency.

1 cl, 3 dwg

FIELD: electrochemical industry; methods of baking of the graphitized electrodes, etc.

SUBSTANCE: the invention is pertaining to the method of baking of the products containing as the binding agent a resin or a pitch, for example, graphitized electrodes. The method of baking of the products containing as binding agent resin or a pitch, includes a pre-heating of the products by the gases outgoing from the baking chambers, the products baking and refrigeration, incineration of the fuel and a part of the escaping from the products pyrolized gases in the chambers of the baking, the products subjected to the baking are put in the containers combined in the blocks; all the escaping from the products pyrolized gases are withdrawn from each block of the containers as the separate stream, integrate the streams within the limits of each chamber into a common stream, which is withdrawn beyond the limits of the chamber, integrated with the streams from the other chambers and directed for incineration into the baking chamber, and in the containers maintain the pressure equal to or greater than the pressure in the corresponding chamber. The device includes the multichamber baking furnace with the burners to maintain the necessary temperature mode of baking and the tools for transportation of gases from the chambers of preliminary heating into the baking chamber and for transportation of the high-temperature gases from the baking chambers into the chambers of the preliminary heating. The chambers are supplied with the containers integrated in the blocks with the lids, which are linked to each other among themselves within the limits of the block by the branch-pipes for withdrawal of the pyrolized gases into the gas-collecting main located inside the chamber and connected with the branch-pipes for the gases withdrawal from the blocks of the lids and with the branch-pipe for removal of the pyrolized gases beyond the limits of the chamber. The branch-pipe is supplied with the tools to control the pressure inside the containers. At that the branch-pipes for withdrawal of the pyrolized gases from the separate chambers are connected with the outside located main, which is connected to tool used for delivery and incineration of the pyrolized gases in the baking chamber. The invention ensures the increase of the ecological and economical efficiency of the baking process in the multichamber baking furnaces.

EFFECT: the invention ensures the increase of the ecological and economical efficiency of the baking process in the multichamber baking furnaces.

2 cl, 4 dwg, 1 ex

FIELD: heat power engineering.

SUBSTANCE: method comprises vibration fluidizing of the layer of the grain nozzle and heating the heat-transfer agent up to a temperature 200-220ºC, at which toxic agents are absorbed by the particles of the grain nozzle. The heat transfer agent is then purified by flowing it through a water filter and heat is accumulated in the tank heat exchanger to transfer the heat to the other heat transfer agent.

EFFECT: enhanced efficiency.

1 dwg

FIELD: the invention refers to apparatus of regenerative thermal oxidation with multi pass valves.

SUBSTANCE: the apparatus for regenerative thermal oxidation for gas processing has a combustion zone, the first heat exchanging layer keeping heat exchanging surroundings and connecting with the combustion zone; the second heat exchanging layer keeping heat exchanging surroundings and connecting with the combustion zone; a valve for alternate direction of the gas flow between the first and the second heat exchanging layers. At that the valve has the first valve passage and the second valve passage separated from the first valve passage; a flow distributor having an admission passage communicates with the help of fluid medium with the admission opening of the surroundings and an exhaust passage communicates with the help of fluid medium with exhaust opening of fluid surroundings. At that the distributor is fulfilled with possibilities of its the first and the second valve passages between the first position in which the first valve passage communicates with the help of liquid with the admission passage and the second valve passage communicates with the help of liquid surroundings with exhaust passage and the second position in which the indicated the first valve passage communicates with the help of the fluid surrounding with exhaust passage and the second passage of the entry of the valve with the help of liquid surroundings communicates with the admission passage. At that the distributor of flow has a blocking surface which blocks the flow through the first part of the first valve passage and through the second part of the second valve passage when the distributor of the flow is between the first and the second positions and is fulfilled with possibility of its turning to 180o between the first and thesecond positions. At that valve passage is divided as the first so is the second at least into two chambers and the first and the second parts of the valve passages are congruous.

EFFECT: simplifies the construction, provides comfort of controlling and exploitation and deep removal of volatile organic combinations.

22 cl, 12 dwg

FIELD: structural members of tube furnaces of the petroleum refining industry, in particular, construction of the lining of the smoke flue of the vertical multichamber radiant-convective furnace used in installation of catalytic reforming, hydrofining and aromatization.

SUBSTANCE: the construction has vertical walls: an inner wall engageable with the working space of the furnace radiant chambers and having holes for passage of flue gases, and an outer wall located on the side of the furnace jacket, made of tongued refractory products laid in rows in a broken joint and with expansion joints of the tongued refractory products and having on the side of the flue mirror-located projecting rows of supporting products positioned one under another in height of the flue, the connecting partitions are made of refractory shaped members installed on the projecting rows forming the horizontal tunnels of the flue, and a heat insulation adjoining the jacket. The novelty is in the fact that each member of the partitions is made in the form of two refractory shaped products installed for independent displacement relative to each other in the vertical axis of the flue at a thermal expansion of the lining walls and interconnected by means of L-shaped bulges made on the ends of the products, facing the flue axis and built in the vertical walls by other tongued ends laid on the supporting beveled products of the projecting row, the outer wall is made tied to the jacket for displacement in the vertical axis of the flue at a thermal expansion of the lining by means of successively engageable shaped members with holes positioned in rows in the lining of the outer wall at an interval of 6 to 9 rows, shackles with one end installed in the hole of the product, and with the other - in the hole of the angle piece welded to the jacket; all the products of the lining are dry laid, with the vertical expansion joints between each product. The outer and inner vertical walls with built-in refractory shaped members of the partitions are made of materials with a different coefficient of linear thermal expansion, larger one at the outer wall.

EFFECT: enhanced stability of the smoke flue lining due to enhanced building strength of it at a thermal expansion.

4 cl, 2 ex, 5 dwg

FIELD: collection of hot gases emanating in production processes.

SUBSTANCE: the invention is dealt with collection of hot gases emanating in production processes and may be used for collection of hot gases on fumarole fields of the active volcano containing water steam and corrosion-active gases. The device contains a collector made in the form of the sealed tunnel provided with two units of gas withdrawal. The tunnel represents a self-supporting curved arch made out of the ceramic heat-insulating acid-proof materials and mounted with use of an acid-proof metal formwork, and protected from above by a sealed acid-resistant casing. The technical result is simplicity of mounting and operation of the sealed heat-insulated device for collection of hot gases with a high share of water steam and corrosion-active compounds.

EFFECT: the invention ensures simplicity of mounting and operation of the sealed heat-insulated device for collection of hot gases with a high share of water steam and corrosion-active compounds.

3 cl, 3 dwg, 1 ex, 1 tbl

The invention relates to ferrous metallurgy
The invention relates to metallurgy, and more specifically to wastewater metallurgical production

The invention relates to the production of iron ore raw materials in ferrous metallurgy and directly relates to the cooling of the ore after agglomeration

FIELD: recycling.

SUBSTANCE: device has body with cone and side tank, moving lid, connected to drive by rod, compacting inserts are mounted above the lid in area of its end positions in cone and side tank, cover of cone and side tank are made removable, on the walls of side tank guides are placed, below cover of cone on inner surface of compacting insert resilient scraper is placed in form of profiled plate, length of which is equal to width of lid along the side adjacent to side tank, on the body of cone pressing stops are placed, and on lower portion of lid wedge-shaped pieces are placed and an eye, in which vertical groove is made, in the groove with possible free movement a finger of rod is placed, rod input assembly is pressurized. Lid is made hollow and contains a system for feeding coolant, coolant influx assembly is pressurized. Coolant feeding system is made in form of coaxial pipeline, evenly positioned in hollow of lid.

EFFECT: higher reliability.

2 cl, 1 dwg

The invention relates to a rotary shut-off devices embrasures furnaces boilers serving for the introduction of retractable tubes sootblowers

The invention relates to a method for burning fuel with air in the combustion chamber, to which at least one intake hole serves the air, and after a few burners - fuel, and each burner has its delay time corresponding to the time interval after which the acoustic pulse in the combustion chamber produces a thermal pulse combustion supplied through the fuel burner

Head of torch plant // 2285863

FIELD: arrangements or devices for treating smoke or fumes.

SUBSTANCE: head comprises gas supply pipe with gas gate and protecting shield mounted outside and coaxially at the top end of the gas supply pipe. The protecting shield is composed of two baffles made of two hollow trancated cones mounted one on the other. The grater base of the top baffle faces downward, and that of the bottom baffle faces upward. The smaller base is connected with the gas supply pipe.

EFFECT: enhanced reliability and prolonged service life.

2 cl, 2 dwg

FIELD: burning combustible gas at pressure above atmospheric.

SUBSTANCE: proposed plant is used for burning lean gases; it consists of unit for burning gas at pressure above atmospheric including lean gas chamber, combustion chamber, heat regeneration section and exhaust; pipe line supplying lean gas to lean gas chamber; heat removal and pressure equalizing chamber and preheated air chamber; plant is also provided with pipe line supplying the compressed surrounding air to heat removal and pressure equalizing chamber, preheated air pipe line for delivery of preheated air to preheated air chamber; provision is made for hole for delivery of lean gas from lean gas chamber to combustion chamber and hole for delivery of preheated air from preheated air chamber to combustion chamber. Heat removal and pressure equalizing chamber is made for heat exchange between lean gas chamber, preheated air chamber and combustion chamber and compressed surrounding air; lean gas and preheated air are burnt in combustion pressure at pressure above atmospheric.

EFFECT: enhanced efficiency; minimum difference in pressure between gas and air chambers.

12 cl, 12 dwg

FIELD: the invention refers to industrial ecology and may be used for flameless purification of ejections of industrial enterprises.

SUBSTANCE: the reactor for catalytic purification of gaseous ejections has a cylindrical body, which interior surface is covered with a catalyst with a source of infrared radiation placed in the body, a tube heat exchanger located in the lower part of the body, a turbine mixer located in the upper part of the body and additionally - a permeable cylindrical drum out of the catalyst so that the axles of the symmetry of the drum and body coincide. The drum embraces the mixer and the source of infrared radiation fulfilled in the shape of a six-ends star is installed in the middle of the body so that its flatness is perpendicular to the axle of the symmetry of the reactor. The drawing off socket is connected with the tube space of the heat exchanger, and the feeding socket is located so as to provide heating of gaseous ejections with the heat of the gases moving out of the reactor.

EFFECT: increases effectiveness of purification of gaseous flow and reduces power inputs for heating the gas flow.

1 dwg

FIELD: technologies for combustion of flush gases, including those under high pressure, during extraction and processing of natural gas and oil.

SUBSTANCE: body of burner, mounted on gas inlet pipe, is made conical with widened portion at upper portion, in the body additionally mounted are two catalyst elements, at lower portion on inlet section first catalyst element is positioned, and above on outlet section - second catalyst element, rotary shutters are mounted on base of conical body in additional way, so that in closed position they are in contact with first catalyst element, and open position between first catalyst element and body gap is formed, also, device is additionally provided with one or more main torches, mounted in gas inlet pipeline below rotary shutters and first catalyst element. Relation of diameters of first and second catalyst elements matches relation of debits of hydrocarbon gas, fed in normal mode and during salvo exhaust. Catalyst elements are manufactured either in form of cell-like structured blocks with direction of channels in parallel to direction of feeding of flush gases, or in form of block sections with granulated catalyst, for example, Rachig rings, or in forms of block sections with active-catalyst metallic shavings, or in form of blocks with active-catalyst metallic meshes.

EFFECT: higher ecological safety and fullness of combustion of flush gases in broad flow range, simplified construction and comfort of maintenance.

6 cl, 3 dwg

FIELD: the invention refers to apparatus of regenerative thermal oxidation with multi pass valves.

SUBSTANCE: the apparatus for regenerative thermal oxidation for gas processing has a combustion zone, the first heat exchanging layer keeping heat exchanging surroundings and connecting with the combustion zone; the second heat exchanging layer keeping heat exchanging surroundings and connecting with the combustion zone; a valve for alternate direction of the gas flow between the first and the second heat exchanging layers. At that the valve has the first valve passage and the second valve passage separated from the first valve passage; a flow distributor having an admission passage communicates with the help of fluid medium with the admission opening of the surroundings and an exhaust passage communicates with the help of fluid medium with exhaust opening of fluid surroundings. At that the distributor is fulfilled with possibilities of its the first and the second valve passages between the first position in which the first valve passage communicates with the help of liquid with the admission passage and the second valve passage communicates with the help of liquid surroundings with exhaust passage and the second position in which the indicated the first valve passage communicates with the help of the fluid surrounding with exhaust passage and the second passage of the entry of the valve with the help of liquid surroundings communicates with the admission passage. At that the distributor of flow has a blocking surface which blocks the flow through the first part of the first valve passage and through the second part of the second valve passage when the distributor of the flow is between the first and the second positions and is fulfilled with possibility of its turning to 180o between the first and thesecond positions. At that valve passage is divided as the first so is the second at least into two chambers and the first and the second parts of the valve passages are congruous.

EFFECT: simplifies the construction, provides comfort of controlling and exploitation and deep removal of volatile organic combinations.

22 cl, 12 dwg

FIELD: burning waste gases of pyrolysis furnaces in reworking solid domestic wastes.

SUBSTANCE: proposed combustion chamber includes mixing chamber with active and passive nozzles mounted at its inlet; active and passive nozzles are connected respectively to compressed air source and to waste gas source; mixing chamber is made in form of diffuser at aperture angle of 10-18 deg; ratio of diameters of active and passive nozzles is equal to: Dact:Dpas=0.35-0.4.

EFFECT: enhanced economical efficiency of use of vapor-and-gas cycle.

2 cl, 1 dwg

The invention relates to the oil industry and can be used for burning waste gas in the oil fields and refineries

The invention relates to furnaces for afterburning of flue gases and can be used to solve environmental problems incineration of household and industrial waste
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