Device for burning waste gases
(57) Abstract:Usage: the invention relates to a device for burning prefabricated gases and can be used in oil, gas, chemical industry and other sectors of the economy during the combustion of the waste and exhaust gases in flares, and when forced combustion gases in emergency mode when repairing equipment. Device for burning waste gases includes a Venturi pipe installed in her coaxially of the inlet pipe with taper output, hemispherical bowl, placed on the conical outlet of the inlet pipe and passing at the base of the double cone, made in the form of boxes, ejection burner installed in the upper part of the hemispherical bowl, vozduhoprovodyaschih nozzle, made in the form of cracks and symmetrically arranged burners, vozduhopodgo pipe installed in the inlet pipe with the annular gap and having the intake tube is made at an angle to its axis and fixed with their ends in the openings of the inlet pipe, procolophonia swirl, placed around vozduhoprovodyaschih pipe on its output side, the shell covering the hemispherical bowl with the formation of the ring to the combustion of waste gases and can be used in oil, gas, chemical industry and other sectors of the economy during the combustion of the waste and exhaust gases in flares, and when forced combustion gases in emergency mode when repairing equipment.A device for combustion of waste gases containing the Venturi pipe installed in her coaxially of the inlet pipe with conical exit, forming an annular gap in the neck of the Venturi tubes, hemispherical bowl, placed on the conical outlet of the inlet pipe and passing at the base of the double cone, made in the form of boxes, the bottom part covering the tapered outlet of the inlet pipe and the upper part of the double cone is divided into a number of sectors through walls, jet burner, installed in the upper part of polyspherical bowl, vozduhoprovodyaschih nozzle, made in the form of cracks and symmetrically arranged burners.When using the known device for combustion of waste gases in large quantities even when the necessary turbulence does not provide adequate mixing, which leads to incomplete combustion of waste gases. In this case, a significant portion of the volume of the turbulent diffusion flame remains inert the Yu hydrocarbon gases, heterogeneous processes and evolution of a large number of harmful substances.Due to the transfer of large quantities of waste gas of combustion products and air under the influence of turbulent fluctuations of the combustion front in a turbulent diffusion flame is obtained wavy, blurred, torn into pieces and weakly stable as the ignition occurs at the periphery of the jet and the fiery ring ceases to perform the role of a source of ignition, which reduces the stability of the ignition flame.The disadvantage of this device is the penetration of a strong wind flow through vozduhoprovodyaschih cracks inside a hemispherical bowl, which can lead to detachment of the flame and its extinction, and this in turn reduces the stability of the combustion flame.The technical result is to increase the efficiency of combustion of waste gases in an open atmosphere and reducing emissions of harmful substances, improving the sustainability of the ignition flame and devices, an extension of the steady burning torch.This is achieved by the fact that the known device containing the Venturi pipe installed in her coaxially of the inlet pipe with tapered Wygoda inlet pipe and passing at the base of the double cone, made in the form of boxes, the bottom part covering the tapered outlet of the inlet pipe and the upper part of the double cone, divided into a number of sectors through walls, jet burner, installed in the upper part of the hemispherical bowl, vozduhoprovodyaschih nozzle, made in the form of cracks and symmetrically arranged burners; in the inlet pipe with conical exit set vozduhovyvoda pipe with annular gap, and the input part of which is at an angle to its axis made the intake tube, the ends of which are fixed in the holes of the inlet pipe; procolophonia swirl placed around vozduhoprovodyaschih pipe at its output side; it is provided with a cowling, covering the hemispherical Cup and the formation of the ring confused aperture communicated with the atmosphere.In contrast to the known device installed in the inlet pipe with conical exit vozduhoprovodyaschih pipe with the annular gap, the entrance of which is at an angle to its axis made the intake tube, the ends of which are fixed in the holes of the inlet pipe; placing procolophonia swirl around vozduhoprovodyaschih pipe on its output side, and the presence of shells, coverage is proven to achieve the goal due to the additional supply of air to the root of the torch and improving the process of mixing air with sbresny gas; create a fiery vortex zone by twisting waste gas; education more than the reduced pressure in the zone between the hemispherical Cup and sides, as well as the elimination of the separation due to the penetration of a strong wind flow through cracks inside a hemispherical bowl.In Fig. 1 shows a longitudinal section of the device of Fig.2 section a-a in Fig. 1; Fig.3 ejection burner, a longitudinal section; Fig.4 a device for ignition of waste gases, the plan.Device for burning waste gases contains a tube 1 for supplying a gas inlet pipe 2 with a conical outlet for the supply of waste gases, box 3, forming a double cone, the collector 4 for associated gas, a hemispherical bowl 5 with symmetrically arranged slots 6, the ejection of the burner 7, creating metatrone ring, tube 8 for the supply of associated gas to the burners, vozduhopodgo pipe 9 with the annular gap, the entrance of which is at an angle to its axis made the intake tube 10, the ends of which are fixed in the holes 11 of the inlet pipe, procolophonia the swirler 12 is placed around vozduhoprovodyaschih pipe on its output side, the shell 13, covering polusfericheskaya 2 with cone output together with vozduhoprovodyaschih pipe 9 to form an annular channel 15, at the outlet of which is placed procolophonia swirl 12 flat blades 16 mounted at an angle to the axis. For sealing the bottom end vozduhoprovodyaschih pipe is closed conical bottom 17. In ducts 3 and a hemispherical bowl 5 attached to the shell 13 by means of the rods 18 and 19.To attach the device to the top of a flare in the bottom base of the inlet pipe is flange 20.The device operates as follows.Discharge gas flows through the inlet pipe 2 with a conical outlet in the annular channel 15. Washing the outer surface of the intake tube 10, the gas flow was turbulized, then he gets in procolophonia swirl 12, where due execution of the blades at an angle of inclination to the axis of the gas flow is twisted, and then he fired.Due to the large temperature difference in the upper and lower parts of the boxes 3 and abrupt changes in air density at the altitude of the air flow ducts rush up and implemented in the base kernel torch. At the same time air is sucked through the suction tube 10 and vozduhopodgo pipe 9 to the root of the torch, creating conditions for the spreading front planeeringuga vortex area by the swirling gas stream, flowing from the annular channel 15, through procolophonia of the swirler 12.At this time the pipe is served associated gas under pressure to 0.09 MPa in the collector 4, which are connected to all ejection burner 7 tube 8 (Fig.1). Associated gas in the burner 7 is supplied through the pipe 8 (Fig.3), and the combustion air sucked from the outside through the entraining capacity of the gas jet and the discharge gas together with the air outlet of the burner burns in the kinetic mode.As a result of simultaneous combustion in a series of ejection burners, components metatrone ring, the air density inside the ring is sharply reduced and formed additional air flow through slots 6 in the hemispherical Cup 5, which are directed radially toward its center (Fig.4).The presence of the shell 13 promotes the formation of more reduced pressure between the hemispherical bowl 5 and the shell 13, and this leads to effective sucking air in this area and through slots 6 in a hemispherical bowl 5, resulting in improved mixing of the air with sbresny gas, and also eliminates the possibility of the separation due to the penetration of a strong wind flow through cracks in NR is nosnam the outlet of the inlet pipe 2, giving sprocname gas swirling movement on the axis of the jet produces a zone of suction that causes the flow of a powerful stream vysokonagornykh products of combustion and air flow to the root of the torch from its inner side. In this case, the torch takes the form of a hollow diverging cone, which is developed on the ignition as on the periphery of the conical outlet of the inlet pipe and the inner surface of the torch, which reduces the length of the torch and further intensifies the process of combustion of waste gas.Therefore, is directed more supply secondary air to the previously turbosound mixture of waste gases, as well as the creation of the fiery vortex zone by twisting waste gas cone on the exit of the inlet pipe of the device. 1. DEVICE FOR BURNING WASTE GASES containing the Venturi pipe installed in her coaxially of the inner supply pipe with conical exit, forming an annular gap with the neck of the Venturi tubes, and a hemispherical bowl, placed on the conical outlet of the inlet pipe and passing at the base of the double cone, made in the form of boxes in the lower part covering the tapered outlet of the inlet pipe, and verhnestaritskiy bowl, vozduhoprovodyaschih nozzle in the form of cracks, symmetrically arranged burners, characterized in that, with the aim of increasing the efficiency of combustion of waste gases in an open atmosphere and reducing emissions, it has placed the annular gap in the supply pipe vozduhoprovodyaschih pipe in the entrance of which is at an angle to its axis installed the intake tube, the ends of which are fixed in the holes of the inlet pipe.2. The device under item 1, characterized in that, to improve the sustainability of the ignition flame, it is provided with procolophonid swirler placed around vozduhoprovodyaschih pipe on its output side.3. The device under item 1, characterized in that, with a view to expanding the limits of sustainable burning torch, it is provided with a cowling covering the hemispherical bowl with the formation of the ring confused aperture communicated with the atmosphere.
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
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: 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 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.
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: 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: 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
FIELD: toxic flue gas combustion technology for fuel-burning units.
SUBSTANCE: flue gases are neutralized in combustion chamber; total fuel flow is bifurcated; first fuel flow is mixed up with flue gases supplied to combustion chamber and second one is conveyed to combustion-chamber burners wherein it is burned in air environment and then passed to combustion chamber. Coke gas, flue gas, or blast-furnace gas, or generator gases, or mixture thereof can be used as fuel; total flowrate of flue gases (B"G) at combustion chamber outlet, total flowrate of fuel (BF) supplied to combustion chamber, flowrate of air (BA) supplied to combustion chamber, and flowrate of fuel (BF BRN) supplied to burners are found from following set of equations (1), (2), (3), (4):
, where B'G is flowrate of flue gases from combustion chamber outlet, kg/h; T'G is temperature of flue gases at combustion chamber inlet, °C; O'2 is oxygen content in flue gases at combustion chamber inlet, %; C'G is heat capacity of flue gases at combustion chamber inlet, kcal/kg; B"G is total flowrate of flue gases at combustion chamber outlet, kg/h; BF is total flowrate of fuel supplied to combustion chamber, kg/h; BF BRN is fuel flowrate to burners, kg/h; QF L is fuel low heating value as fired, kcal/kg; O2" is oxygen content in flue gases at combustion chamber outlet, %; VA O is theoretical air flowrate for burning 1 kg of fuel, kg/h; BA is air flowrate to combustion chamber, kg/h; TG" is gas temperature at combustion chamber outlet, °C; CG" is heat capacity of flue gases at combustion chamber outlet, kcal/kg; α is excess air coefficient. Temperature within combustion chamber is maintained between 850 and 1150 °C.
EFFECT: enhanced efficiency of flue gas neutralization in fuel-burning units.
1 cl, 1 dwg, 3 tbl, 1 ex
FIELD: chemical engineering.
SUBSTANCE: method comprises using gas made of a mixture of carbon dioxide and oxygen in the plasma burner. The plasma burner ionizes gas thus producing carbon monoxide and reactive oxygen that removes ash from the gas. Oxygen and vapor are sprayed and injected to chamber (3) that receives the device with plasma burner. The control system (6) is provided with feedback and controls the concentration of the production gas, nozzle, and plasma burner.
EFFECT: enhanced reliability.
29 cl, 3 dwg
FIELD: the invention is designed for ventilation and may be used at equipping industrial objects.
SUBSTANCE: the system of ventilation of an industrial object has local units of suction air with polluting substances, an airway connecting the local suction units with the suction branch pipe of a boiler's blow fan. The airway is connected through drainage with the pipeline located below it with condensed and liquid fractions of polluting substances. The pipeline is switched to the suction branch pipe of the boiler's blow fan.
EFFECT: increases reliability, economy of the ventilation system of an industrial object.
3 cl, 1 dwg