CN204121928U - A kind of dedusting, catalyzing integrated gasifying device - Google Patents

A kind of dedusting, catalyzing integrated gasifying device Download PDF

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Publication number
CN204121928U
CN204121928U CN201420553276.8U CN201420553276U CN204121928U CN 204121928 U CN204121928 U CN 204121928U CN 201420553276 U CN201420553276 U CN 201420553276U CN 204121928 U CN204121928 U CN 204121928U
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ceramic
film tube
gas
catalyst
air inlet
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CN201420553276.8U
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李爱民
高宁博
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Dalian University of Technology
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Dalian University of Technology
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Abstract

The utility model relates to a kind of dedusting, catalyzing integrated gasifying device, and 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

A kind of dedusting, catalyzing integrated gasifying device
Technical field
The utility model belongs to technical field of environment protection equipment, relates 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.
Utility model content:
The utility model provides a kind of reaction unit collecting dedusting, catalytic integration, both can meet the high standard emission request of gas, can reach cost-saving object again.
A kind of dedusting of the present utility model, 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 utility model, 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 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 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 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 device, is connected with collection conduit; The connection of gas outlet and reaction unit 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 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;
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 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 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 ceramic membrane reaction unit, 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 all kinds of high-temperature dusty gas such as gasification, pyrolysis, incineration gases, adopts V 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; 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 all kinds of high-temperature dusty gas such as gasification, pyrolysis, incineration gases, adopts V 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; 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.
CN201420553276.8U 2014-09-23 2014-09-23 A kind of dedusting, catalyzing integrated gasifying device Withdrawn - After Issue CN204121928U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104275063A (en) * 2014-09-23 2015-01-14 大连理工大学 Dust removing and catalyzing integrated device
CN105042596A (en) * 2015-06-30 2015-11-11 大连理工大学 Internal dust removal type pyrolysis and gasification device and method for organic solid fuel
CN105817090A (en) * 2016-05-23 2016-08-03 西安交通大学 Ceramic membrane oxidation reduction blowback system and method
CN113046138A (en) * 2021-03-25 2021-06-29 武汉轻工大学 High-efficiency desulfurization device and method for blast furnace gas

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104275063A (en) * 2014-09-23 2015-01-14 大连理工大学 Dust removing and catalyzing integrated device
CN104275063B (en) * 2014-09-23 2015-10-28 大连理工大学 A kind of dedusting, catalyzing integrated gasifying device
CN105042596A (en) * 2015-06-30 2015-11-11 大连理工大学 Internal dust removal type pyrolysis and gasification device and method for organic solid fuel
CN105042596B (en) * 2015-06-30 2017-08-01 大连理工大学 A kind of organic solid fuel inner dust-removing type pyrolysis gasifying device and method
CN105817090A (en) * 2016-05-23 2016-08-03 西安交通大学 Ceramic membrane oxidation reduction blowback system and method
CN113046138A (en) * 2021-03-25 2021-06-29 武汉轻工大学 High-efficiency desulfurization device and method for blast furnace gas

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Granted publication date: 20150128

Effective date of abandoning: 20151028

C25 Abandonment of patent right or utility model to avoid double patenting