CN104275063B - A kind of dedusting, catalyzing integrated gasifying device - Google Patents
A kind of dedusting, catalyzing integrated gasifying device Download PDFInfo
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- CN104275063B CN104275063B CN201410490544.0A CN201410490544A CN104275063B CN 104275063 B CN104275063 B CN 104275063B CN 201410490544 A CN201410490544 A CN 201410490544A CN 104275063 B CN104275063 B CN 104275063B
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- 239000007789 gas Substances 0.000 claims abstract description 89
- 239000000919 ceramic Substances 0.000 claims abstract description 44
- 239000003054 catalyst Substances 0.000 claims abstract description 27
- 230000003197 catalytic effect Effects 0.000 claims abstract description 21
- 238000010926 purge Methods 0.000 claims abstract description 21
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 239000001301 oxygen Substances 0.000 claims abstract description 11
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 11
- 241000264877 Hippospongia communis Species 0.000 claims abstract description 6
- 239000000428 dust Substances 0.000 claims description 24
- 239000011148 porous material Substances 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 4
- 229910052783 alkali metal Inorganic materials 0.000 claims description 3
- 150000001340 alkali metals Chemical class 0.000 claims description 3
- 238000007598 dipping method Methods 0.000 claims description 3
- 238000002309 gasification Methods 0.000 claims description 3
- 230000010354 integration Effects 0.000 claims description 3
- 238000000197 pyrolysis Methods 0.000 claims description 3
- 238000013517 stratification Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000005474 detonation Methods 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims description 2
- 239000002912 waste gas Substances 0.000 claims description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims 4
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims 2
- -1 alkaline-earth metal salt Chemical class 0.000 claims 2
- GNRSAWUEBMWBQH-UHFFFAOYSA-N nickel(II) oxide Inorganic materials [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 claims 2
- 238000006555 catalytic reaction Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003595 mist Substances 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract 1
- 238000006722 reduction reaction Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 239000012528 membrane Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000006479 redox reaction Methods 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005367 electrostatic precipitation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The present invention relates to a kind of dedusting, catalyzing integrated gasifying device, this device is primarily of gas outlet, ceramic-film tube orifice plate, feeder, igniter, air inlet, catalytic ceramics body, ceramic-film tube, ceramic-film tube cavity, purge gas nozzle, blowback air wind-distributing pipe, blowback air control valve, ash bucket, unloading valve and ceramic-film tube fixed head composition.High-temperature dusty gas enters system with cyclone mode, and the mixture of the oxygen provided with feeder, air, steam or above-mentioned gas mixes, and after igniter, mist reacts.Reacted gas enters into ceramic-film tube cavity through ceramic-film tube, then when by catalytic ceramics body, with catalyst generation catalytic reaction, collects discharge finally by gas outlet.The ceramic honey comb of supported catalyst or foamed ceramic body are positioned at ceramic-film tube cavity top.This device integrates dedusting, catalysis, effectively can process high-temperature dusty gas, reaches environmental protection and economic double effects.
Description
Technical field
The invention belongs to technical field of environment protection equipment, relate to a kind of dedusting, catalyzing integrated gasifying device.
Background technology
Along with industrial expansion, high-temperature dusty gas is day by day serious on the impact of environment.Traditional dedusting technology such as mechanical type dedusting technology, electrostatic precipitation technology, wet dust collection technology and dust removal by filtration technology etc. can not meet high-level emission request to the process of high-temperature dusty gas.
In the last few years, the dust collection method of high-temperature dusty gas was increasing.Patent 201120341801.6 discloses a kind of dust pelletizing system processing high-temperature dust-containing flue gas, and system mainly comprises stainless steel filter drum type precipitator, and this system has the advantages such as equipment is few, operating cost is low, convenient operating maintenance.Patent 201120150624.3 discloses a kind of cyclone dust collectors and compound cyclone dust collectors, cyclone dust collectors comprise shell, arrange air cavity in the enclosure and N number of copper plate, compound cyclone dust collectors are formed by connecting by an above-mentioned M cyclone dust collectors, have practical, that dust removing effects is outstanding advantage.But all fail to reduce well the toxicity of high-temperature dusty gas.And dedusting, catalyzing integrated gasifying device both can improve efficiency of dust collection well, gas toxicity can be reduced again, met gas purging standard, also can reach cost-saving object.And ceramic membrane has the advantages such as high temperature resistant, antipollution, energy consumption are low, Operation and Maintenance is simple, makes device process efficient, easy and simple to handle.
Summary of the invention:
The invention provides a kind of reaction unit collecting dedusting, catalytic integration, both can meet the high standard emission request of gas, cost-saving object can be reached again.
A kind of dedusting of the present invention, catalyzing integrated gasifying device, comprise gas outlet, ceramic-film tube orifice plate, feeder, igniter, air inlet, catalytic ceramics body, ceramic-film tube, ceramic-film tube cavity, purge gas nozzle, blowback air wind-distributing pipe, blowback air control valve, ash bucket, unloading valve and ceramic-film tube fixed head.The main part of dedusting, catalyzing integrated gasifying device is cylindrical, and below connects ash bucket.On the downside of the outside wall surface of device, be provided with 1-3 air inlet, the outer wall of air inlet is along the tangential direction of integrated apparatus, and gas enters system in the mode of eddy flow; Air inlet directly can be connected with producing the device of waste gas, both saves Master Cost, can effectively utilize again used heat for oxidation or reduction reaction with provide heat in system, make condensable material be in gaseous state.
Air inlet duct is provided with a feeder and an igniter.Feeder is positioned at directly over air inlet duct, and near from air inlet distance, feeder provides the mixture of air, oxygen, steam or above-mentioned gas, for be oxidized or reduction phase to provide heat in system.Igniter is positioned at immediately below air inlet duct, and close to apparatus main body, igniter and feeder have certain distance, to ensure that the gas that dusty gas and feeder provide fully mixes, is convenient to high voltage package igniting.High-temperature 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.
Gas outlet is positioned at the top of device, can be connected with collection conduit; The connection of gas outlet and reaction unit is Flange joint, is convenient to, according to different processing requirements, change different types of catalyst.
The pipeline of air inlet and gas outlet is all provided with high-temp pressure sensor, measures inlet outlet pressure differential in real time and be convenient to deashing operation.
Blowback air wind-distributing pipe is positioned at the below of gas outlet, and blowback air wind-distributing pipe is provided with purge gas nozzle and control valve, and blowback air control valve is located at the outside of integrated apparatus.Blowback air wind-distributing pipe, blowback air nozzle and control valve are all for the deashing of ceramic-film tube.When inlet outlet pressure differential reaches limit value, open blowback air control valve, purge gas is ejected in ceramic-film tube cavity by purge gas nozzle with high-voltage pulse through blowback air wind-distributing pipe, and from inside to outside pass through ceramic-film tube, superficial dust is subject to impulsive force and falls into ash bucket, to reach the object of deashing.Purge gas can be inert gas, as nitrogen; Also can be the gas identical or close with gas outlet or air inlet component, this gas enters in described ceramic membrane reaction unit, does not produce detonation.
Ceramic-film tube fixed head is positioned at the below of purge gas nozzle, is provided with ceramic-film tube orifice plate below ceramic-film tube fixed head.Ceramic-film tube fixed head and orifice plate are used for fixing ceramic-film tube.
Ceramic-film tube is that a kind of pore size and thickness reduce and the pore gradient ceramics film pipe of bottom seal all from inside to outside successively, is positioned at the centre position of device, is fixed on ceramic-film tube orifice plate by ceramic-film tube fixed head.Pore diameter range is 0.1-15 μm, and the thickness of outermost layer and ceramic film is 0.1-0.2mm, and the thickness in intermediate layer is 0.5-2mm, and the thickness of nexine is 8-10mm.And ceramic-film tube is divided into groups, be convenient to carry out deashing successively to ensure the continuity of operation.Be 500-1200 DEG C by the temperature range of ceramic-film tube, and heat is provided by the oxidation occurred in the waste heat of high-temperature dusty gas and device or reduction reaction.
Ceramic-film tube cavity is the hollow part of ceramic-film tube, and catalytic ceramics body is positioned at the top of ceramic-film tube cavity, is made up of ceramic honey comb or foamed ceramic body supported catalyst.When there is catalytic reaction, the mixture of air, oxygen, steam or above-mentioned gas etc. can be passed into for catalytic reaction.And the catalyst of load in catalytic ceramics body adopts different catalyst according to different processing intents, for all kinds of high-temperature dusty gas such as gasification, pyrolysis, incineration gases, V can be adopted
2o
5, WO
3, Mn
2o
3, MnO
2, CuO, V
2o
5, Fe
2o
3, NiO, KOH, alkali metal, the catalyst such as alkali salt or above-mentioned substance compound be the catalyst cupport of active component on the ceramic body such as ceramic honey comb or foamed ceramics, to realize the reformation to gas.First gas arrive in ceramic-film tube cavity, then when through catalytic ceramics body, with catalyst generation catalytic reaction wherein by ceramic-film tube ecto-entad.Catalytic ceramics body has dustproof function to dust, can reach the dual purpose of dedusting, catalysis.
Ash bucket is positioned at the below of apparatus main body, is provided with unloading valve, for regularly removing dust stratification; The connected mode of ash bucket is Flange joint, is convenient to change ash bucket.
In dedusting, catalyzing integrated gasifying device, redox, dustproof function, catalytic action acting in conjunction in high-temperature dusty gas, to reduce the pollution to environment.
Wherein, redox: high-temperature dusty gas in admission line, the air first provided with feeder, the oxygen-containing gas such as oxygen or its mixture fully mix, then under the igniting of the high voltage package of igniter, there is oxidation or reduction reaction, release amount of heat.Both can reduce the content of oxidable reduction components in gas, the heat of generation also can be utilized to heat condensable material to reduce the loss to ceramic-film tube.
Dustproof function: be first gas from air inlet with the mode access to plant of eddy flow, in rotary course, dust larger for density can get rid of to wall by the centripetal force produced, thus particle loses inertia force, rely on the momentum of entrance velocity and self gravitation and fall into ash bucket, reaching certain dust removing effects; Secondly, in a device, reacted mist through ceramic-film tube intercept by ceramic membrane, dust is attached on ceramic membrane to reach the object of dedusting.
Catalytic action: the mist through ceramic-film tube udst separation passes catalytic ceramics body, with catalyst generation catalytic reaction.In catalytic reaction process, also can be passed into mixture of air, oxygen, steam or above-mentioned gas etc. by blowback air wind-distributing pipe for catalytic reaction, and catalyst can change the process being applicable to gas with various.
In dedusting, catalyzing integrated gasifying device, the mode of deashing is high-voltage pulse ash disposal: during plant running, when inlet outlet pressure differential reaches limit value, open corresponding blowback air control valve, a large amount of purge gas is sprayed in ceramic-film tube cavity with high-voltage pulse by blowback air wind-distributing pipe and purge gas nozzle, purge gas from inside to outside by ceramic-film tube, dust is split away off from ceramic membrane, then relies on Action of Gravity Field to fall into ash bucket.
In dedusting, catalyzing integrated gasifying device, the catalyst of catalysed partial can, by the mode load of dipping on conventional ceramic, also can be that catalyst mixes with certain proportion with aggregate, then adds other components and fire and form.
In dedusting, catalyzing integrated gasifying device, ceramic membrane carries out multitube arrangement, both can improve gas treatment amount, can reduce device fabrication cost again, reaches economy, efficiently object.
Accompanying drawing explanation
Fig. 1 is the structural representation of dedusting, catalyzing integrated gasifying device.
Fig. 2 is the A-A profile of dedusting, catalyzing integrated gasifying device.
In figure: 1 gas outlet; 2 ceramic-film tube orifice plates; 3 feeders; 4 igniters; 5 air inlets; 6 catalytic ceramics bodies; 7 ceramic-film tubes; 8 ceramic-film tube cavitys; 9 ceramic-film tube fixed heads; 10 purge gas nozzles; 11 blowback air wind-distributing pipes; 12 blowback air control valves; 13 ash buckets; 14 unloading valves.
Detailed description of the invention
As shown in the figure, dedusting of the present invention, catalyzing integrated gasifying device, form primarily of gas outlet 1, ceramic-film tube orifice plate 2, feeder 3, igniter 4, air inlet 5, catalytic ceramics body 6, ceramic-film tube 7, ceramic-film tube cavity 8, ceramic-film tube fixed head 9, purge gas nozzle 10, blowback air wind-distributing pipe 11, blowback air control valve 12, ash bucket 13 and unloading valve 14.
High-temperature dusty gas enters from the air inlet 5 being positioned at reaction unit bottom in the mode of eddy flow, in admission line, the oxygen-containing gas such as the oxygen provided with feeder 3, air mix, under the high voltage package provided in igniter 4 is again lighted a fire, there is redox reaction, then mist is in rotary course, the dust relying on centripetal force density to be far longer than gas gets rid of to wall, when dust contacts with wall, lose inertia force and rely on the momentum of entrance velocity and self gravitation to fall into ash bucket 14; With this simultaneously, under the hot environment that the heat provided at the waste heat provided by high-temperature dusty gas and redox reaction produces, mist enters into ceramic-film tube cavity 8 by ceramic-film tube 7, to remove dust, then when the gas of ceramic-film tube 7 dedusting is by catalytic ceramics body 6, fully contact with catalyst, and there is catalytic reaction, also can pass into mixture of air, oxygen, steam or above-mentioned gas etc. for catalytic reaction in catalytic ceramics body 6 by blowback air wind-distributing pipe; Discharge is collected finally by gas outlet 1.
High-pressure pulse deashing is by controlling purge gas nozzle 10, blowback air wind-distributing pipe 11, blowback air control valve 12 successively to ceramic-film tube deashing.First the high-temp pressure sensor being positioned at and importing and exporting on pipeline is observed, when its pressure reduction reaches limit value, open corresponding blowback air control valve 12, blowback air wind-distributing pipe 11 and purge gas nozzle 10 is utilized to spray a large amount of purge gas in ceramic-film tube cavity 8 with high-voltage pulse, purge gas is gone out from inside to outside, to blow off the dust stratification be attached on ceramic-film tube 7, and fall into ash bucket 13 with gas pressure intensity, then the ceramic-film tube 7 of different group is removed successively, finally by unloading valve 14 regularly ash discharge.
Claims (5)
1. dedusting, a catalyzing integrated gasifying device, comprise gas outlet, ceramic-film tube orifice plate, feeder, igniter, air inlet, catalytic ceramics body, ceramic-film tube, ceramic-film tube cavity, purge gas nozzle, blowback air wind-distributing pipe, blowback air control valve, ash bucket, unloading valve and ceramic-film tube fixed head; The main part of dedusting, catalyzing integrated gasifying device is cylindrical, and below connects ash bucket; On the downside of the outside wall surface of dedusting, catalyzing integrated gasifying device, be provided with 1-3 air inlet, the outer wall of air inlet is along the tangential direction of dedusting, catalyzing integrated gasifying device, and gas enters system in the mode of eddy flow; Air inlet is directly connected with the device producing waste gas;
Air inlet duct is provided with a feeder and an igniter; Feeder is positioned at directly over air inlet duct, and near from air inlet distance, feeder provides the mixture of air, oxygen, steam or above-mentioned gas, for be oxidized or reduction phase to provide heat in system; Igniter is positioned at immediately below air inlet duct, and close to dedusting, catalytic integration apparatus main body, igniter and feeder have certain distance, to ensure that the gas that dusty gas and feeder provide fully mixes, is convenient to high voltage package igniting;
Gas outlet is positioned at the top of dedusting, catalyzing integrated gasifying device, is connected with collection conduit; The connection of gas outlet and dedusting, catalyzing integrated gasifying device is Flange joint;
The pipeline of air inlet and gas outlet is all provided with high-temp pressure sensor, measures inlet outlet pressure differential in real time and be convenient to deashing operation;
Blowback air wind-distributing pipe is positioned at the below of gas outlet, and blowback air wind-distributing pipe is provided with purge gas nozzle and blowback air control valve, and blowback air control valve is located at the outside of dedusting, catalyzing integrated gasifying device; Blowback air wind-distributing pipe, blowback air nozzle and blowback air control valve are all for the deashing of ceramic-film tube;
Ceramic-film tube fixed head is positioned at the below of purge gas nozzle, is provided with ceramic-film tube orifice plate below ceramic-film tube fixed head, and ceramic-film tube fixed head and orifice plate are used for fixing ceramic-film tube;
Ceramic-film tube is that a kind of pore size and thickness reduce and the pore gradient ceramics film pipe of bottom seal all from inside to outside successively, is positioned at the centre position of dedusting, catalyzing integrated gasifying device, is fixed on ceramic-film tube orifice plate by ceramic-film tube fixed head;
Ceramic-film tube cavity is the hollow part of ceramic-film tube, and catalytic ceramics body is positioned at the top of ceramic-film tube cavity, is made up of ceramic honey comb or foamed ceramic body supported catalyst;
Ash bucket is positioned at the below of dedusting, catalytic integration apparatus main body, is provided with unloading valve, for regularly removing dust stratification; The connected mode of ash bucket is Flange joint, is convenient to change ash bucket.
2. a kind of dedusting according to claim 1, catalyzing integrated gasifying device, it is characterized in that, ceramic-film tube pore diameter range is 0.1-15 μm, and the thickness of outermost layer and ceramic film is 0.1-0.2mm, the thickness in intermediate layer is 0.5-2mm, and the thickness of nexine is 8-10mm; The temperature range of ceramic-film tube is 500-1200 DEG C.
3. a kind of dedusting according to claim 1 and 2, catalyzing integrated gasifying device, it is characterized in that, purge gas is inert gas, or with the gas that gas outlet/air inlet component is identical or close, this gas enters in described dedusting, catalyzing integrated gasifying device, does not produce detonation.
4. a kind of dedusting according to claim 1 and 2, catalyzing integrated gasifying device, it is characterized in that, the catalyst of load in catalytic ceramics body adopts different catalyst according to different processing intents, for gasification, pyrolysis, all kinds of high-temperature dusty gas of incineration gases, adopts V
2o
5, WO
3, Mn
2o
3, MnO
2, CuO, V
2o
5, Fe
2o
3, NiO, KOH, alkali metal, alkaline-earth metal salt catalyst or above-mentioned substance compound be the catalyst cupport of active component on ceramic honey comb or foamed ceramics ceramic body, to realize the reformation to gas; Catalyst on conventional ceramic, or adopts catalyst to mix with certain proportion with aggregate by the mode load of dipping, then adds other components and fire and form.
5. a kind of dedusting according to claim 3, catalyzing integrated gasifying device, it is characterized in that, the catalyst of load in catalytic ceramics body adopts different catalyst according to different processing intents, for gasification, pyrolysis, all kinds of high-temperature dusty gas of incineration gases, adopts V
2o
5, WO
3, Mn
2o
3, MnO
2, CuO, V
2o
5, Fe
2o
3, NiO, KOH, alkali metal, alkaline-earth metal salt catalyst or above-mentioned substance compound be the catalyst cupport of active component on ceramic honey comb or foamed ceramics ceramic body, to realize the reformation to gas; Catalyst on conventional ceramic, or adopts catalyst to mix with certain proportion with aggregate by the mode load of dipping, then adds other components and fire and form.
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| CN201410490544.0A CN104275063B (en) | 2014-09-23 | 2014-09-23 | A kind of dedusting, catalyzing integrated gasifying device |
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| CN109806703B (en) * | 2019-03-11 | 2020-04-28 | 西安交通大学 | Dust removal device and dust removal method for dust-containing oil gas |
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| CN2071254U (en) * | 1990-02-12 | 1991-02-13 | 国家建筑材料工业局山东工业陶瓷研究设计院 | Large diameter column foamed ceramic body |
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