CN204159171U - A kind of catalytic ceramics film reaction device - Google Patents
A kind of catalytic ceramics film reaction device Download PDFInfo
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- CN204159171U CN204159171U CN201420549511.4U CN201420549511U CN204159171U CN 204159171 U CN204159171 U CN 204159171U CN 201420549511 U CN201420549511 U CN 201420549511U CN 204159171 U CN204159171 U CN 204159171U
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- gas
- ceramics film
- catalytic ceramics
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Abstract
The utility model relates to a kind of catalytic ceramics film reaction device.This device mainly comprises feeder, igniter and catalytic ceramics film pipe.Wherein, high-temperature dusty gas along the tangential direction of reaction unit from air inlet with the mode access to plant of eddy flow, and the mixture of the oxygen, air, steam or the above-mentioned gas that provide with feeder mixes, through spark ignition, there is oxidation or reduction reaction in mist, then under the high temperature conditions by catalytic ceramics film pipe, the dust in gas is filtered on its surface, there is catalytic reaction in gas, discharge finally by gas outlet in through the process of catalytic ceramics film pipe.Catalytic ceramics film pipe is the pore gradient ceramics film pipe of a kind of different pore size scope internal burden different catalysts and bottom seal, and pore size and the equal ecto-entad of thickness increase successively.This reaction unit is simple, and treating capacity is large, can reach dedusting, catalysis, redox triple effect well.
Description
Technical field
The utility model belongs to technical field of environment protection equipment, relates to a kind of catalytic ceramics film reaction device.
Background technology
Not only temperature is high for the waste gas that the industry such as metallurgy, machinery, chemical industry, electric power emits, and containing a large amount of dust and pernicious gas, is one of principal element causing environmental pollution.Traditional dedusting method can not process high-temperature dusty gas well because of its technical limitation, therefore cannot meet high-level environment protection emission and UTILIZATION OF VESIDUAL HEAT IN requirement.
In recent years ceramic membrane because having high temperature resistant, antipollution, the advantage such as film regenerability is good, energy consumption is low, Operation and Maintenance is simple, make its extensive use in dedusting, separation.Patent 201320057103.2 discloses a kind of temp. gas dust remover, mainly provides a kind of resistant to elevated temperatures ceramic membrane filter material, solves the problem of gas cleaning at high temperature material.Patent 201320544059.8 discloses a kind of ceramic-film tube Multistage filtering device being separated dedusting for High Temperature Gas cigarette, solves the high temperature resistant problem of meticulous separator.But the toxicity of high-temperature dusty gas reduces and UTILIZATION OF VESIDUAL HEAT IN problem is solved not yet effectively.
Catalytic ceramics film is a kind of different pore size scope load different catalysts, and high-temperature dusty gas is carried out to the pore gradient ceramics film of dedusting, catalysis.Patent 201310471663.7 provides a kind of dust-laden poisonous high-temperature gas process ceramic membrane and preparation method thereof, can effectively realize dedusting, denitrification integral.But the catalyst type of load is too single, the requirement that gas toxicity reduces can not be met well.
Utility model content
The utility model provides a kind of catalytic ceramics film reaction device, can process high-temperature dusty gas better, makes it reach high-level emission request, and reduces its pollution to environment.
A kind of catalytic ceramics film reaction device of the present utility model, comprises air inlet, feeder, igniter, gas outlet, pulse tube, control valve, nozzle, dividing plate, sealing ring, catalytic ceramics film pipe, ceramic-film tube cavity, ash bucket and unloading valve.The main part of catalytic ceramics film reaction device is cylindrical, is provided with gas outlet in the top of reaction unit, and gas outlet can be connected with gas collection pipeline, and bottom is provided with ash bucket, and the connected mode of ash bucket is Flange joint, is convenient to change ash bucket and operation; Ash bucket is provided with unloading valve, is convenient to regular ash discharge.
Pulse tube, control valve and nozzle are positioned at immediately below gas outlet, for the deashing of catalytic ceramics film pipe.Open control valve, through pulse tube, a large amount of purge gas is ejected in ceramic-film tube cavity by nozzle with high-voltage pulse, then blows out from inside to outside from the hole of ceramic-film tube, the laying dust blown off on ceramic membrane, reach the object of deashing.Purge gas both can be inert gas or the gas identical or close with air inlet or gas outlet component.
Be provided with 1-3 air inlet on the top of the side wall surface of reaction unit main body, the outer wall of air inlet is along the tangential direction of reaction unit, and gas enters system in the mode of eddy flow.Air inlet directly can be connected with producing the device of waste gas, reduces the use of pipeline, and the heat that can effectively utilize in waste gas is for oxidation or reduction reaction with provide heat in system, reduces costs.
Air inlet and gas outlet pipeline being all provided with high-temp pressure sensor, for measuring inlet outlet pressure differential, being convenient to the regular deashing of ceramic-film tube.
Air inlet pipeline is provided with a feeder and an igniter.Feeder is positioned at the top of air inlet duct, and distance air inlet is near; Feeder provides the mixture of air, oxygen, steam or above-mentioned gas, for oxidation or reduction phase.Igniter is positioned at the below of air inlet duct, and the main body of distance reaction unit is near, and igniter and feeder have certain distance, to ensure that the gas that dusty gas and feeder provide fully mixes, are convenient to spark ignition.Dusty gas is first under the effect of feeder, and the mixture of air, oxygen, steam or above-mentioned gas mixes, then under the effect of igniter, oxidation or reduction reaction occurs.
Dividing plate is positioned at immediately below nozzle, device is divided into reaction zone and pooling zone, also for fixing ceramic-film tube.
Sealing ring, both can sealed ceramic film pipe between dividing plate and ceramic-film tube, can cushion again the pulse caused by deashing.
Catalytic ceramics film pipe is positioned at the middle part of reaction unit.Catalytic ceramics film pipe is a kind of different levels load different catalysts and the pore gradient ceramics film pipe of bottom seal, and one is divided into 3 layers, and outermost layer is ceramic membrane, and the second layer is sub-layers, loaded with nano catalyst, and third layer is coarse layer, load typical catalyst.The catalyst that the catalyst type of load is different according to the heterogeneity load of dusty gas, the compound that can adopt the catalyst such as V2O5, WO3, Mn2O3, MnO2, CuO, V2O5, Fe2O3, NiO, KOH, alkali metal, alkali salt or above-mentioned substance is active component, catalyst cupport, on the ceramic membrane having TiO2-SiO2 coating, realizes the reformation to all kinds of high-temperature dusty gas such as gasification, pyrolysis, incineration gases.The pore diameter range of ceramic-film tube is 0.1-15 μm, and pore size and thickness all reduce from inside to outside successively, and the thickness of ceramic film is 0.1-0.2mm, and the thickness of sub-layers is 0.5-1mm, and the thickness of coarse layer is 1-5mm.
In catalytic ceramics film reaction device, temperature is higher, and its scope is 500-1200 DEG C, and energy source is provided by the oxidation occurred in the waste heat of high-temperature dusty gas and device or reduction reaction.
In catalytic ceramics film reaction device, there are dedusting, catalysis, redox effect to high-temperature dusty gas, high-level emission request can be met, the pollution to air can be reduced again.
Dustproof function: be first that high-temperature dusty gas enters system from air inlet in the mode of eddy flow, in rotary course, centripetal force is relied on to get rid of to wall by particle larger for density, once contact with wall, lose inertia force, only rely on the momentum of entrance velocity and self gravitation to make it fall into ash bucket, certain dust removing effects can be reached; Next is in system, high-temperature dusty gas by ceramic membrane time, stop by the aperture on surface, make dust be attached to ceramic surface, to reach the object of dedusting.
Catalytic action: under the high temperature conditions, when mist is by catalytic ceramics film, reacts with the different catalysts be attached in ceramic body hole, to reduce its toxicity.
Redox: the air in high-temperature dusty gas and access equipment, oxygen, steam or above-mentioned gas mixture, under spark ignition, redox reaction occurs.Its object mainly contains 2 points: (1) provides heat to ensure that the material passed into is gaseous state to system.As: for pyrolysis gas, redox reaction is to provide heat to it, makes the unlikely condensation of tar wherein, and then reduces the extent of deterioration to ceramic membrane.(2) redox active components in reduction gas is to reduce the harm to environment.Such as: for gasification gas and combustion gas, be then to make gas redox more complete, to reduce its pollution to environment.
In the reaction unit of catalytic ceramics film, the deashing of ceramic membrane and original position recover most important online.
High-pressure pulse deashing: ceramic-film tube is divided into different groups, carries out deashing to catalytic ceramics film pipe respectively successively, to ensure the continuity of operation by control valve.When the pressure reduction imported and exported reaches limit value, open control valve, by pulse tube and nozzle, a large amount of purge gas is ejected in ceramic-film tube cavity with high-voltage pulse, purge gas is gone out from inside to outside, utilize gas pressure intensity that dust is split away off from ceramic body, Action of Gravity Field is relied on to fall into ash bucket again, to reach the object of deashing.
The online restitution of original position: after running a period of time, due to the existence of oxidation, cause carbon deposit to be attached on ceramic membrane, thus affect catalytic action.Given this phenomenon, need pass into a large amount of cleaned airs at air inlet place, carries out igniting and carbon deposit is burnt completely, can reach the object of removing.
Catalytic ceramics film, has two kinds of preparation methods: (1) is first made into common pottery, then is attached to respectively in different levels by catalyst by the mode of dipping; (2) aggregate and powder catalyst are mixed according to certain ratio, then adding through auxiliary reagent, fire by different level and form.
In the reaction unit of catalytic ceramics film, catalytic ceramics film carries out multitube arrangement, not only can increase gas treatment amount, can also reduce device fabrication cost.
The catalytic ceramics film reaction device integrating dedusting, catalysis, redox high-temperature dusty gas of the present utility model, reaction unit is simple, and treating capacity is large, can reach dedusting, catalysis, redox triple effect well.
Accompanying drawing explanation
Fig. 1 is the structural representation of catalytic ceramics film reaction device.
Fig. 2 is the A-A profile of the reaction unit of catalytic ceramics film.
Fig. 3 is the structural representation of catalytic ceramics film.
Fig. 4 is the partial enlarged drawing of the structural representation of catalytic ceramics film.
In figure: 1 air inlet; 2 feeders; 3 igniters; 4 gas outlets; 5 pulse tubes; 6 control valves; 7 nozzles; 8 dividing plates; 9 sealing rings; 10 catalytic ceramics film pipes; 11 ceramic-film tube cavitys; 12 ash buckets; 13 unloading valves;
1. ceramic membrane 2. sub-layers 3. coarse layer.
Detailed description of the invention
As shown in the figure, catalytic ceramics film reaction device of the present utility model, forms primarily of air inlet 1, feeder 2, igniter 3, gas outlet 4, pulse tube 5, control valve 6, nozzle 7, dividing plate 8, sealing ring 9, catalytic ceramics film pipe 10, ceramic-film tube cavity 11, ash bucket 12 and unloading valve 13.High-temperature dusty gas enters system from air inlet 1 in the mode of eddy flow, and the mixture of the oxygen, air, steam or the above-mentioned gas that first provide with feeder 2 on the pipeline of air inlet 1 mixes, and igniter 3 times, redox reaction occurs.Then mist is in rotary course, and rely on centripetal force to get rid of to wall by particle larger for density, particle, once contact with wall, loses inertia force and relies on the momentum of entrance velocity and self gravitation to make it fall into ash bucket, can reach certain dust removing effects; Simultaneously high-temperature dusty gas is by catalytic ceramics film pipe 10, dust stop by the aperture of ceramic membrane surface, to reach the object of dedusting, and in the catalyst in ceramic body hole and its generation catalytic reaction.Finally collect discharge from gas outlet 4.
High-pressure pulse deashing carries out deashing to ceramic membrane respectively successively by control valve 6, pulse tube 5 and nozzle 7.Observe the high-temp pressure sensor of import and export, when the pressure reduction imported and exported reaches limit value, open control valve 6, through the pulse tube 5 be positioned at directly over catalytic ceramics film pipe 10, by nozzle 7, a large amount of purge gas is ejected in ceramic-film tube cavity 11 with high-voltage pulse, purge gas from inside to outside by catalytic ceramics film pipe 10, dust is fallen from ceramic body blowing up, rely on Action of Gravity Field to fall into ash bucket 12 again, and carry out regular ash discharge by unloading valve 13.
Original position is recovered to be to recover dedusting and the catalytic performance of catalytic ceramics film 10 by the carbon deposit that is attached on ceramic body of burning online.At air inlet 1, place passes into a large amount of cleaned airs, under the spark ignition of igniter 3, carbon deposit is burnt completely, can reach the object of removing.
Claims (8)
1. a catalytic ceramics film reaction device, comprises air inlet, feeder, igniter, gas outlet, pulse tube, control valve, nozzle, dividing plate, sealing ring, catalytic ceramics film pipe, ceramic-film tube cavity, ash bucket and unloading valve; It is characterized in that, the main part of catalytic ceramics film reaction device is cylindrical, is provided with gas outlet in the top of reaction unit, gas outlet is connected with gas collection pipeline, bottom is provided with ash bucket, and the connected mode of ash bucket is Flange joint, is convenient to change ash bucket and operation; Ash bucket is provided with unloading valve, is convenient to regular ash discharge;
Pulse tube, control valve and nozzle are positioned at immediately below gas outlet, for the deashing of catalytic ceramics film pipe;
Be provided with 1-3 air inlet on the top of the side wall surface of reaction unit main body, the outer wall of air inlet is along the tangential direction of reaction unit, and gas enters system in the mode of eddy flow; Air inlet is directly connected with the device producing waste gas;
Air inlet and gas outlet pipeline being all provided with high-temp pressure sensor, for measuring inlet outlet pressure differential, being convenient to the regular deashing of ceramic-film tube;
Air inlet pipeline is provided with a feeder and an igniter; Feeder is positioned at the top of air inlet duct, and distance air inlet is near; Feeder provides the mixture of air, oxygen, steam or above-mentioned gas, for oxidation or reduction phase; Igniter is positioned at the below of air inlet duct, and the main body of distance reaction unit is near, and igniter and feeder have certain distance, to ensure that the gas that dusty gas and feeder provide fully mixes, are convenient to spark ignition;
Dividing plate is positioned at immediately below nozzle, device is divided into reaction zone and pooling zone, also for fixing ceramic-film tube; Sealing ring is between dividing plate and ceramic-film tube.
2. a kind of catalytic ceramics film reaction device according to claim 1, it is characterized in that: catalytic ceramics film pipe (10) is a kind of different levels load different catalysts and the pore gradient ceramics film pipe of bottom seal, one is divided into 3 layers, outermost layer is ceramic membrane, the second layer is sub-layers, loaded with nano catalyst, third layer is coarse layer, load typical catalyst; The pore diameter range of ceramic-film tube is 0.1-15 μm, and pore size and thickness all reduce from inside to outside successively; Wherein, the thickness of ceramic film is 0.1-0.2mm, and the thickness of sub-layers is 0.5-1mm, and the thickness of coarse layer is 1-5mm.
3. a kind of catalytic ceramics film reaction device according to claim 1 and 2, is characterized in that: the catalyst that on catalytic ceramics film pipe (10), the catalyst type of load is different according to the heterogeneity load of dusty gas, adopts V
2o
5, WO
3, Mn
2o
3, MnO
2, CuO, V
2o
5, Fe
2o
3, NiO, KOH, alkali metal or alkali salt be active component, catalyst cupport is having TiO
2-SiO
2on the ceramic membrane of coating, realize the reformation to gasification, pyrolysis, all kinds of high-temperature dusty gas of incineration gases.
4. a kind of catalytic ceramics film reaction device according to claim 1 or 2, is characterized in that: the deashing of ceramic-film tube is undertaken by pulse tube (5), control valve (6) and nozzle (7); When inlet outlet pressure differential reaches limit value, open control valve (6), by pulse tube (5) and nozzle (7), a large amount of purge gas is ejected in ceramic-film tube cavity (11) with high-voltage pulse, purge gas being blown off by superincumbent for attachment dust stratification by catalytic ceramics film pipe (10) from inside to outside, last resort Action of Gravity Field falls into ash bucket (12).
5. a kind of catalytic ceramics film reaction device according to claim 3, is characterized in that: the deashing of ceramic-film tube is undertaken by pulse tube (5), control valve (6) and nozzle (7); When inlet outlet pressure differential reaches limit value, open control valve (6), by pulse tube (5) and nozzle (7), a large amount of purge gas is ejected in ceramic-film tube cavity (11) with high-voltage pulse, purge gas being blown off by superincumbent for attachment dust stratification by catalytic ceramics film pipe (10) from inside to outside, last resort Action of Gravity Field falls into ash bucket (12).
6. a kind of catalytic ceramics film reaction device according to claim 1,2 or 5, is characterized in that: purge gas is inert gas, or the gas identical or close with air inlet (1) or gas outlet (4) component.
7. a kind of catalytic ceramics film reaction device according to claim 3, is characterized in that: purge gas is inert gas, or the gas identical or close with air inlet (1) or gas outlet (4) component.
8. a kind of catalytic ceramics film reaction device according to claim 4, is characterized in that: purge gas is inert gas, or the gas identical or close with air inlet (1) or gas outlet (4) component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420549511.4U CN204159171U (en) | 2014-09-23 | 2014-09-23 | A kind of catalytic ceramics film reaction device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420549511.4U CN204159171U (en) | 2014-09-23 | 2014-09-23 | A kind of catalytic ceramics film reaction device |
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| Publication Number | Publication Date |
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| CN204159171U true CN204159171U (en) | 2015-02-18 |
Family
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| CN201420549511.4U Withdrawn - After Issue CN204159171U (en) | 2014-09-23 | 2014-09-23 | A kind of catalytic ceramics film reaction device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104258676A (en) * | 2014-09-23 | 2015-01-07 | 大连理工大学 | Catalytic ceramic membrane reaction device |
| CN107670428A (en) * | 2017-10-19 | 2018-02-09 | 苏州红恩新材料科技有限公司 | A kind of screen pipe suitable for high-temperature dust-containing flue gas |
| CN114931850A (en) * | 2022-07-08 | 2022-08-23 | 江苏天洁环保装备有限公司 | Dry desulfurization, denitrification and dust removal integrated system |
| CN114939386A (en) * | 2022-06-02 | 2022-08-26 | 苏州道一至诚纳米材料技术有限公司 | Membrane catalytic reaction device |
-
2014
- 2014-09-23 CN CN201420549511.4U patent/CN204159171U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104258676A (en) * | 2014-09-23 | 2015-01-07 | 大连理工大学 | Catalytic ceramic membrane reaction device |
| CN107670428A (en) * | 2017-10-19 | 2018-02-09 | 苏州红恩新材料科技有限公司 | A kind of screen pipe suitable for high-temperature dust-containing flue gas |
| CN114939386A (en) * | 2022-06-02 | 2022-08-26 | 苏州道一至诚纳米材料技术有限公司 | Membrane catalytic reaction device |
| CN114931850A (en) * | 2022-07-08 | 2022-08-23 | 江苏天洁环保装备有限公司 | Dry desulfurization, denitrification and dust removal integrated system |
| CN114931850B (en) * | 2022-07-08 | 2024-03-12 | 江苏天洁环保装备有限公司 | Dry desulfurization, denitrification and dust removal integrated system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150218 Effective date of abandoning: 20151216 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |