Device for sorption neutralization of gases

FIELD: sorption neutralization of gases.

SUBSTANCE: proposed device includes two parallel horizontal gas-tight reactors arranged in casing at spaced relation; each reactor includes at least two sections filled with bulk granulated adsorbent and closed over ends with partitions carrying ejection pneumatic haulage units mounted above flow divider; device is provided with inlet and outlet branch pipes for delivery and discharge of gas; provision is made for V-shaped slide at angle of generatrices exceeding slope of repose for bulk adsorbent; V-shaped slide of each reactor is provided with drain branch pipe; walls of central reservoir are combined with hood excluding bridging of adsorbent; hood is equidistant relative to slide. Mechanism for hermetic discharge of used adsorbent includes longitudinal screw feeder and discharge pipe fitted with swivel gate valve; direction of turn of spiral provided on screw feeder of discharge mechanism is opposite to direction of main spiral.

EFFECT: improved quality of neutralization of gases; enhanced operational safety.

2 cl, 6 dwg

 

The invention relates to techniques for carrying out physical processes in the presence of a stationary layer of solid particles, and more particularly to devices for cleaning of gases in neutralizing harmful components by their concentration on the developed surface of the solid adsorbents, mainly granular activated carbon, and can be used for industrial neutralization of exhaust gases from the kiln incineration of toxic and harmful substances in aerosols, such as lewisite.

The prior art describes a device for sorption of neutralization of gases in patent RU 2153926, 01 J 8/02, 8/06; 01 D 53/04, 2000, vertical reactor which contains the inlet and outlet of the Central cavity, separated by a transverse partition. The reactor fortified coaxially inside the casing through the gap and has at least two sections filled with loose granular adsorbent.

This device is characterized by the fact that the Windows partitions are made in rotary valves, placed in a vertical reactor and associated with its conical sections slezami, inclined at an angle of repose for granular adsorbent, while the upper section of the reactor is equipped with a socket communication with the pneumatic ejection load, and the output from the reactor is mounted the mechanism is sealed unloading reflect otakeho adsorbent.

The adsorbent in the lower sections of the reactor is replaced automatically gravity, moving from the top of the partitions through Windows rotary valves that are set for it vertically, which improves the performance of the localized cleaning of gases by reducing the idle time of rotation of the adsorbent layers.

However, the disadvantage of this device is unsatisfactory as a neutralizing toxic gases due to the presence of the technological gap above the layer of adsorbent in the upper sections of the reactor, forming a natural angle dumping of granular activated carbon at automatic loading pneumatic transport. Through this gap in the upper section of the reactor aerosol supplied to the processing below, partially passes without fine purification from impurities.

Full download sections ejected adsorbent is provided by increasing the rate of feed, but the granules partially crushed on the rear wall of the reactor, which changes the calculated bulk density and the desired gas cleaning mode. In the dynamics of small particles of crushed granules of coal Wake up down and a layer of adsorbent additionally SAG forming at the top of the gap to a value greater than in the first case, increasing the quality of processing.

Therefore, the described device is at an inherent disadvantage of incomplete neutralization of the treated gas.

In addition, a large hydraulic resistance of the layer of adsorbent estimated thickness determines the relatively low cleaning performance with long auxiliary time.

Rotation of granulated activated carbon in the sections of the reactor with varying degrees of activity, conducted with the help of a special mechanism built into the Windows partition, complicates the design and increases consumer cost of the device as a whole.

Gravitational overload of the adsorbent in the mating sections defines a vertical scheme of the reactor, which limits the use of the device on the existing production facilities, limit the height of buildings, for the construction of special plants need additional capital expenditures.

Noted shortcomings in is selected as the closest analogue device for sorption of neutralization of gases on the patent for utility model, EN 33518, 01 J 8/00, 2003

It is a known device for sorption of neutralization of gases contains placed with a gap in the casing, two parallel, separated by a hollow channel, a horizontal gas-permeable reactor. Each reactor consists of two filled bulk granular adsorbent consecutive sections, equipped with Autonomous ejection pneumotransport the AMI boot granular adsorbent, mounted on the transverse walls on sloping flow divider, combined with perforated walls of their Central capacity - longitudinal channel of communication with the inlet and outlet nozzles of the processed gas.

In the lower part of the casing is installed combined with a V-shaped gravity slid mechanism sealed unloading of spent adsorbent comprising a longitudinal screw and removing the pipe, has a rotary damper. The angle forming the gravity slid selected a large angle of repose for loose granular adsorbent, which provides automatic removal of sections of the reactor under the action of gravitational forces when rotating the auger and the open gate.

The described device has a simple and functional design that provides improved performance better neutralization of gases.

When horizontal the scheme of the reactor reduced the capital cost of implementation, the design allowed us to reduce the load on the adsorbent, separating its layers within each section, improved the quality of dynamic cleaning the treated gas.

The horizontal reactor allows for a more productive, while maintaining the integrity of the granules and without increasing the feeding speed of the bulk of the adsorbent, in parallel with two independent ejection pneumotransport the mouths to fully load both sections, additionally, reducing the auxiliary time.

Accommodation in the sections of the perforated reactor capacity messages from the inlet and outlet nozzles in combination with a peripheral gap relative to the casing and a hollow Central channel, and in the presence of transverse partitions between the sections of the reactor creates a labyrinth the route of the processed gas to duplicate his contact with the adsorbent, which increases the degree of purification from impurities and toxic substances.

The interior of the perforated channel sections horizontal reactor, through which the gas to be processed, mounted under the ejection pneumatic loading, inclined flow divider automatically evenly to fill the section of the reactor in two layers, the total thickness of a given technology.

The flow divider attached to the walls of the perforated Central capacity sections of the reactor automatically generates when you boot from the calculated volume of the adsorbent two subtle layer through which the treated gas is more rapidly penetrates, which increases the cleaning performance.

Convex inclined flow divider additionally performs the function of the hydraulic valve, which prevents the passage of the processed gas, bypassing the layer of adsorbent that is structurally ensures the quality of neutralization according to the requirements of the cleanup.

However, a disadvantage of the known device is unsatisfactory neutralize gases and functional reliability, which are detected during operation, the following design flaws.

Without partial disassembly of the cover difficult to remove the remaining liquid reagents inter-operational sanitation reactor dispersed dust of spent adsorbent at oil and condensate accumulated in the working cycle, the presence of which in the reactor reduces the quality of processing.

Due to the possible formation of arches in inaccessible from outside the gravity slid unloading difficult the removal of the spent adsorbent.

Due to overstocking granules of adsorbent pressure of the screw at its output end is formed of a growing lump that overlaps the cross-section of the outlet pipes of the mechanism of unloading, reducing or completely preventing the issuance of granules. To eliminate congestion carry out a reverse screw or partial disassembly of the mechanism of unloading, which is unacceptable on environmental conditions contactless processing gas in a closed volume device and automatic packaging of spent adsorbent in a sealed container.

Work with a hot aerosol containing coal dust, in a sealed reactor is a fire and explosion hazards, to prevent the treatment of which requires additional tools and accessories.

Task to be solved by the present invention is directed, is to improve the quality of the processing gases to neutralize toxic and hazardous constituents, as well as increasing the functional reliability of the process devices for carrying out these works.

The required technical result is achieved by the fact that in the known device for sorption of neutralization of gases containing placed with a gap in the casing, two parallel, separated by a hollow channel, a horizontal gas-permeable reactor, each of which includes at least two filled bulk granular adsorbent serial section, closed at the ends by walls, bearing ejection pneumotransport separate boot partition, mounted above the flow divider, combined with perforated walls of their Central capacity of communication with the output and input connections of the processed gas, which is V-shaped storage that form which is inclined to the vertical axis at an angle greater than the angle of repose for loose granular adsorbent, with a sealed discharge of spent adsorbent comprising a longitudinal screw and removing the pipe, has a rotary damper according to the invention have a drain pipe V-shaped IC is ize each reactor equidistant installed protivorvotny cap, mounted on the walls of the Central capacity, and on the auger mechanism of the discharge over the output pipe is made spiral turn in the opposite direction, while at the outlet port installed nozzle supply pipe fire extinguishing gas, and the inlet pipe of the membrane, outside the closed safety screen.

Distinctive features combined to produce the solution in the invention objectives of the novelty of quality, namely: improved quality of neutralization processed aerosols and safety, as well as extended use of the device with minimal capital cost improvements.

Installation in an inclined gravity slid discharge discharge pipe provided smooth periodic removal during operation of the accumulated condensate and after inter-operational sanitation (for reuse of the device when replacing the spent adsorbent) remains liquid reagents with suspended particles of activated carbon. This helped to improve the quality of neutralization processed aerosols.

Installation in the V-shaped gravity slid each reactor equidistant protivozudnoe cap mounted on the Central vessel sections, formed two independent channels unloading, inclined to the screw at an angle greater than the angle e of the natural slope of bulk granular adsorbent, that excludes its braking and the formation of arches, preventing congestion. The spent adsorbent freely removed from the reactor.

Execution on the auger mechanism of the discharge over the output pipe spiral the opposite direction is created when applying the adsorbent counterflow, excluding its stagnation, accumulation, compaction and formation of a dense tube, which could block the cross-section of the outlet pipes, having complicated or terminating the discharge. Thus over the output pipe with the discharge of spent adsorbent continuously performs automatic turning.

Installation at the outlet port of the nozzle pipe opposite the feed to the reactor extinguishing gas (carbon dioxide) is fire safety, and installation at the inlet pipe bursting membrane prevents critical growth pressure.

The membrane on the outside is closed by a screen, which prevents its accidental mechanical damage from outside.

Therefore, every significant topic are needed, and their combination in a stable relationship are sufficient to achieve the novelty quality, extrinsic signs of dissociation, i.e. not the sum of the effects, and the effect of the amount of signs.

The comparative analysis of proposed technical solutions to identified Ana is ogami prior art, from which the invention not obvious to a person skilled systems showed that it is not known, and given opportunities for industrial mass production of devices for sorption neutralize gases can be concluded according to the criteria of patentability.

The invention is illustrated in the drawing, which is purely illustrative and is not limiting of the scope of rights formulas, where schematically:

figure 1 - the proposed device;

figure 2 - the same, top view;

figure 3 is a view along arrow a in figure 1;

figure 4 - the mechanism of unloading;

figure 5 - nozzle supply pipe carbon dioxide;

figure 6 - pressure relief membrane.

The device is designed to neutralize the harmful and toxic substances in aerosols contained in the exhaust from the furnace burning them, by adsorption on the developed surface of granular activated carbon, which is then utilizada.

Getprogname reactor 1 is fixed in the casing 2 of the device (Fig.1-3) with a peripheral gap 3, closed on the ends of the partitions 4, where docked inlet and outlet pipes 5 and 6 respectively of the inlet and exhaust of the processed gas.

In the casing 2 is mounted two parallel reactor 1, between which is formed a hollow channel 7. Each reactor 1 consists of two consecutive sections , separated by a removable partition 9, which is filled with granular coal AG-POR TU 6-15-1028844-025-91, the adsorbent 10.

Inside each reactor 1 is mounted channel 11 communicating with the inlet and outlet nozzles 5, 6, representing the Central capacity, perforated walls of which are top aligned with the divider 12 flow, and bottom - with protivolednym cap 13 mounted equidistant V-shaped gravity slid 14 unloading. Forming of gravity slid 14 inclined to the vertical axis of the reactor 1 at an angle exceeding the angle of repose, bulk adsorbent 10, which automatically ensures free movement under the action of gravitational forces.

The divider 12 flow performed similarly, convex in the direction pinned to the partitions 4 and 9 two independent ejection of pneumotransport 15 separate filing of the adsorbent 10 in the associated sequential section 8 of the reactor 1.

Under gravity slid 14 posted by longitudinal screw 16 (Fig 1, 4) submission of spent adsorbent 10 to the output pipe 17 equipped with a rotary slide gate 18, hermetically isolating the volume of the unloading mechanism.

On the auger 16 unloading mechanism, over the output pipe 17, is made round 19 of the opposite direction, contrary to the main spiral.

The V-shaped gravity slid 14 (figure 1) mounted in the drain pipe 20 removal of mouseremote in sanitary processing reactor 1 for technological change adsorbent 10 and periodic discharge in the work of the formed condensate.

The adsorbent 10 from the storage tank by means of parallel independent ejection of pneumotransport 15 is supplied in sections 8 to fill, while fed granular adsorbent 10 is evenly divided by the divider 12 into two streams that come into the reactor 1 from both sides of the Central tank 11.

At the outlet port 6 is mounted (figure 5) nozzle 21 line 22 supply of carbon dioxide in case of operation fire alarm box (conventionally not shown) inside the reactor 1, and the inlet pipe 5 in box 23 (6) is fixed to the membrane 24, torn from exceeding the working pressure inside the device, preventing its accidental destruction. The membrane 24 from the outside is closed with a safety screen 25 from unauthorized mechanical damage.

Does the proposed device is as follows. The treated gas through the inlet pipe 5 is supplied in section 8 of the reactor 1 through the perforated Central tank 11, which is held by a partition 9. Further, the gas sequentially penetrates through the perforation of the vessel wall 11, a layer of adsorbent 10 and perforation of the reactor 1 in General a hollow channel 7 and on the opposite side in the gap 3 of the casing 2. On the developed surface of active carbon is deposited slabokontsentrirovannye harmful or toxic substances treatment is tiemogo aerosol.

Out of the back channel 7 and the peripheral gap 3, reflected from the transverse walls 4, the gas then enters the adjacent first serial section 8 gas-permeable reactor 1 through sdoi adsorbent 10, where a thin gas cleaning from impurities in the Central container 11 behind the partition 9.

Through pipe 6 fully processed gas is discharged from the device.

When reaching a set level of contamination of the adsorbent 10 (reduction of its activity) the gas supply to the processing stops and include the rotation of the screw 16 of the unloading mechanism in the open position rotary gate 18 to output pipe 17, which is hermetically secured detachable receiver (not shown).

During mechanical feed screw 16 granulated adsorbent 10 in the output pipe 17, a layer of adsorbent 10 in the reactor 1 is deposited and is automatically moved by gravity slid 14 without congestion and arching on the helix of the auger 16. Over the output pipe 17 also is formed arches, because the coil 19 of the spiral auger 16 opposite direction is formed counter to the main stream of the adsorbent 10, creating the prototype of granules, preventing compaction and the formation of arches, resulting in the spent adsorbent 10 is freely discharged into the receiver.

Then hermetically packaged in a removable receiver spent adsorbent 10 send is recycled in the furnace burning hazardous substances, closing the loop-waste processing gases.

When inter-operational sanitation reactors 1 device vapor and liquid reagents to their discharge through the nozzle 20 of gravity slid 14 output pipe 17, then the drain pipe 20 is closed, the gate 18 is turned, blocking the offending pipe 17, and is hermetically fixed on her new receiver for the spent adsorbent 10,

Then the cycle repeats from the download section 8 of the reactor 1 fresh granular adsorbent 10. This provides a specified quality cleaning gases to neutralize the harmful and toxic substances in the proposed device with high functional reliability and safety of operations.

To improve the performance or quality of gas purification device of the described construction agregation in the production line, docking them sequentially. When removing the detachable partitions 9 in parallel reactors 1 sequentially stacked devices is increased productivity, and without removing it formed an additional stage of filtration that enhances the quality of the processing gas.

1. Device for sorption of neutralization of gases containing placed with a gap in the casing, two parallel separated by a hollow channel horizontal gas-permeable reactor, each of to the which includes, at least two filled bulk granular adsorbent serial section, closed at the ends by walls, bearing ejection pneumotransport separate boot partition, mounted above the flow divider, combined with perforated walls of their Central capacity communication with the inlet and outlet nozzles of the processed gas, which is V-shaped with the storage angle forming exceeding the angle of repose for loose granular adsorbent, with a sealed discharge of spent adsorbent, characterized in that the V-shaped storage each reactor is equipped with a drain pipe, the walls of the Central tank bottom combined with a cap that prevents the formation of the arches of the adsorbent, when the cap is installed equidistant V-shaped gravity slid, the mechanism is sealed unloading of spent adsorbent includes a longitudinal screw and removing the pipe, has a rotary gate, and on the auger mechanism of the discharge over the output pipe is made spiral turn, have a direction counter to the main direction of the helix of the screw.

2. The device according to claim 1, characterized in that at the inlet and outlet pipes respectively installed nozzle supply pipe fire extinguishing gas and the membrane, outside the closed guard is the first screen.



 

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