CN104162351A - Double-sodium tail gas clarification device and clarification method - Google Patents
Double-sodium tail gas clarification device and clarification method Download PDFInfo
- Publication number
- CN104162351A CN104162351A CN201410078230.XA CN201410078230A CN104162351A CN 104162351 A CN104162351 A CN 104162351A CN 201410078230 A CN201410078230 A CN 201410078230A CN 104162351 A CN104162351 A CN 104162351A
- Authority
- CN
- China
- Prior art keywords
- gas
- reduction reactor
- sodium
- ammonia reduction
- heat exchanger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention relates to a double-sodium (sodium nitrate and sodium nitrite) tail gas clarification device and a double-sodium tail gas clarification method. The device comprises a tail gas discharge device, a washing tower, a mist catcher, a de-duster, a heat-exchanger, an electric heater, a reduction gas discharge device, an ammonia reduction reactor, and a gas discharge device. The tail gas discharge device, the washing tower, the mist catcher, and the de-duster are connected sequentially. An outlet of the de-duster is connected with a shell side inlet of the heat-exchanger; a shell side outlet of the heat-exchanger is connected to an inlet of the ammonia reduction reactor; the reduction gas discharge device is connected with the inlet of the ammonia reduction reactor; an outlet of the ammonia reduction reactor is connected to a tube side inlet of the heat-exchanger; a tube side outlet of the hear-exchanger is connected with the gas discharge device; and a catalyst layer is arranged in the ammonia reduction reactor. The structural design of the device is reasonable, and double-sodium tail gas treatment effect is good. Discharged nitrogen oxide concentration is greatly lower than a national standard. The heat-exchanger is used, such that gas before reaction is not needed to be heated, and energy is saved. Demineralized water is used for cleaning the catalyst layer, such that catalyst regeneration can be realized.
Description
Technical field
The present invention relates to a kind of two sodium exhaust gas cleaner and purification methods thereof, for removing the sodium salt of two sodium tail gas.
Background technology
Two sodium refer to sodium nitrate and natrium nitrosum, the exhaust temperature producing in two sodium production processes is relatively low, water content is higher, carbon dioxide content is relatively high, and contain certain density sodium salt (comprising sodium nitrate, natrium nitrosum and sodium carbonate etc.) particle, the conventional purification of inapplicable two sodium tail gas of rare nitric acid plant tai-gas clean-up catalyst.
Granted publication number is in the Chinese utility model description of CN202527071U, a kind of improvement nitric acid and two sodium production process tail gas ammonia reduction reactors are disclosed, it is characterized in that: in ammonia reduction reactor, establish beds, beds is divided into two sections, top is provided with tail gas outlet.Prior art is processed tail gas by ammonia reduction reactor need to add ammonia, and because ammonia is generally all made by synthetic ammonia, price is high, causes with ammonia reduction waste gas cost very high.And gas enters before ammonia reduction reactor and need to be heated to certain temperature, long-time use wastes energy; In file, there is no tail gas after correlated response, the processing mode of waste water and the maintaining method of catalyst yet.
Summary of the invention
Technical problem to be solved by this invention is to overcome existing above-mentioned deficiency in prior art, and provides a kind of reasonable in design, energy-saving and emission-reduction, effective protection of the environment, two sodium exhaust gas cleaner and the purification methods thereof that vent gas treatment is effective.
The present invention solves the problems of the technologies described above adopted technical scheme: the invention provides a kind of two sodium exhaust gas cleaners, it is characterized in that: it comprises gas emission device, scrubbing tower, mist eliminator, deduster, heat exchanger, reducing gas tapping equipment, ammonia reduction reactor and exhaust apparatus, gas emission device is connected with the import of scrubbing tower, the outlet of scrubbing tower is connected with the import of mist eliminator, the top exit of mist eliminator is connected with the import of deduster, the outlet of deduster is connected with the shell side import of heat exchanger, the shell side outlet of heat exchanger is connected with the import of ammonia reduction reactor, reducing gas tapping equipment is connected with the import of ammonia reduction reactor, the outlet of ammonia reduction reactor is connected with the tube side import of heat exchanger, the tube side outlet of heat exchanger is connected with exhaust apparatus, between said structure, by pipeline, connect, in described ammonia reduction reactor, be provided with catalyst layer.Due to the NOx that contains high level in two sodium tail gas and certain content sodium salt particle, after scrubbing tower high-efficient washing, can effectively remove most sodium salt compositions (comprising sodium nitrate, natrium nitrosum and sodium carbonate etc.) and part NOx in two sodium tail gas, through mist eliminator, can remove acid mist, remaining acid mist and sodium salt particle are removed in cyclone dust removal; Heat exchanger can carry out heat exchange by the gas before and after reaction, makes the gas before reaction can reach demand temperature without electrical heating, has saved the energy; After the tube side of reacted gas by heat exchanger, be discharged in air, nitrous oxides concentration meets national standard.
On pipeline between connection heat exchanger shell pass outlet of the present invention and the import of ammonia reduction reactor, be provided with electric heater, initial reaction stage is for adding the gas before thermal response.
On mist eliminator of the present invention, be provided with circulating pump, the import of circulating pump is connected with the outlet at bottom of mist eliminator, and the side import of circulation delivery side of pump and mist eliminator is connected.In circulating pump, add desalted water, recycle, catch fog effect good.
Circulating pump of the present invention has two, and two circulating pumps are arranged in parallel mutually, strengthens catching fog effect.
Reducing gas tapping equipment of the present invention is discharged reducing gas, and reducing gas is gas ammonia or synthetic ammonia relief gas.Gas ammonia is from ammoxidation system, and the synthetic ammonia volume content of ammonia in means of deflation of speeding is 60～80%.
The exit of ammonia reduction reactor of the present invention is provided with wastewater treatment equipment, between the outlet of wastewater treatment equipment and ammonia reduction reactor, by pipeline, is connected, and is provided with switch valve on pipeline.Open switch valve, the waste water producing in can processing reaction.
On ammonia reduction reactor of the present invention, be provided with desalted water device, between desalted water device and ammonia reduction reactor, by pipeline, be connected, on pipeline, be provided with switch valve.Use desalted water washing catalyst, can realize catalyst regeneration, the catalyst activity after regeneration is more close than the active basic maintenance of fresh catalyst, and under identical conditions, NOx conversion ratio almost maintains an equal level.
Catalyst layer of the present invention has two-layer, and two catalyst layers is in parallel mutually, and the import of ammonia reduction reactor is between two catalyst layers.Mist passes through respectively two-layer catalyst, sufficient reacting; Two-layer catalyst parallel running, has reduced the resistance of catalyst layer, has improved efficiency.
Catalyst layer of the present invention is for take the non-precious metal catalyst that activated alumina is carrier.
The present invention also provides a kind of purification method of two sodium exhaust gas cleaners, it is characterized in that: the purifying step of two sodium tail gas is:
(1) gas emission device is discharged two sodium tail gas, enters scrubbing tower and washs, and removes most of sodium salt composition and part NOx in tail gas; From scrubbing tower tail gas out, enter mist eliminator and remove acid mist; From mist eliminator tail gas out, go deduster to remove remaining acid mist and sodium salt particle;
(2) from deduster tail gas out, enter the shell side of heat exchanger, from heat exchanger tail gas out, by electric heater, be heated to 150 ℃, and after mixing with reducing gas, enter ammonia reduction reactor;
(3) temperature in ammonia reduction reactor is 180-220 ℃, mist reacts under the effect of catalyst, removes the sodium salt in tail gas, and reacted gas temperature is 250 ℃, gas enters the tube side of heat exchanger from the outlet of ammonia reduction reactor, carry out heat exchange with the gas before reacting; Gas temperature in heat exchanger shell pass raises, and the gas temperature in tube side reduces; After stable, the gas before reaction can reach 150 ℃ by heat exchanger heat exchange, without heating by electric heater again;
(4) reacted gas is by after the tube side of heat exchanger, and the tube side by heat exchanger exports to exhaust apparatus, is discharged in air;
In above-mentioned steps (3), the waste water that ammonia reduction reactor produces, is discharged to wastewater treatment equipment from pipeline;
After the long-term use of catalyst layer, can open the switch valve in desalted water device connecting pipe, use desalted water washing catalyst, soak after 60-120 minute and discharge; Repeated washing process 3-5 time; Reusable heat air purge catalyst layer, purges liquid object in catalyst layer totally, discharges Liquid Residue, realizes catalyst regeneration.
The present invention compared with prior art, has following positive effect: reasonable in design, and two sodium vent gas treatment are effective, and the nitrous oxides concentration of discharge is less than 150ppm, far below national standard; Use heat exchanger, without the gas to before reaction, heat, saved the energy; Adopt desalted water cleaning catalyst layer, can realize catalyst regeneration, use for a long time; Configuration wastewater treatment equipment, can process waste water in time.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
The specific embodiment
Below by embodiment, the invention will be further described.
Embodiment 1:
The present embodiment comprises gas emission device 1, scrubbing tower 2, mist eliminator 3, deduster 4, heat exchanger 5, reducing gas tapping equipment 7, ammonia reduction reactor 8 and exhaust apparatus 9, gas emission device 1 is connected with the import of scrubbing tower 2, the outlet of scrubbing tower 2 is connected with the import of mist eliminator 3, the top exit of mist eliminator 3 is connected with the import of deduster 4, the outlet of deduster 4 is connected with the shell side import of heat exchanger 5, the shell side outlet of heat exchanger 5 is connected with the import of ammonia reduction reactor 8, reducing gas tapping equipment 7 is connected with the import of ammonia reduction reactor 8, the outlet of ammonia reduction reactor 8 is connected with the tube side import of heat exchanger 5, the tube side outlet of heat exchanger 5 is connected with exhaust apparatus 9, between said structure, by pipeline 10, connect, in described ammonia reduction reactor 8, be provided with catalyst layer 11.
In the present embodiment, connect on the pipeline 10 between heat exchanger 5 shell side outlets and 8 imports of ammonia reduction reactor and be provided with electric heater 6, initial reaction stage is for adding the gas before thermal response.
In the present embodiment, be provided with circulating pump 12 on mist eliminator 3, the import of circulating pump 12 is connected with the outlet at bottom of mist eliminator 3, and the side import of the outlet of circulating pump 12 and mist eliminator 3 is connected.Circulating pump 12 has two, and two circulating pumps 12 are arranged in parallel mutually.In circulating pump 12, add desalted water, recycle, catch fog effect good.
In the present embodiment, reducing gas tapping equipment 7 is discharged reducing gas, and reducing gas is gas ammonia, and reducing gas tapping equipment 7 is from ammoxidation system.
In the present embodiment, the exit of ammonia reduction reactor 8 is provided with wastewater treatment equipment 14, between the outlet of wastewater treatment equipment 14 and ammonia reduction reactor 8, by pipeline 10, is connected, and is provided with switch valve 15 on pipeline 10.Open switch valve 15, the waste water producing in can processing reaction.
In the present embodiment, the exit of circulating pump 12 is provided with wastewater treatment equipment 14, between the outlet of wastewater treatment equipment 14 and circulating pump 12, by pipeline 10, is connected, and is provided with switch valve 15 on pipeline 10.
In the present embodiment, on ammonia reduction reactor 8, be provided with desalted water device 16, between desalted water device 16 and ammonia reduction reactor 8, by pipeline 10, be connected, on pipeline 10, be provided with switch valve 15.Use desalted water washing catalyst, can realize catalyst regeneration, the catalyst activity after regeneration is more close than the active basic maintenance of fresh catalyst, and under identical conditions, NOx conversion ratio almost maintains an equal level.
In the present embodiment, catalyst layer 11 is for take the non-precious metal catalyst that activated alumina is carrier.The present embodiment adopts N-847D low temperature high activity selective reduction catalyst, the preparation of Dalian Dalian Catalytic Engineering Technology Ltd. of the Chemistry and Physics Institute of catalyst n-847D Chinese Academy of Sciences, and the key technical indexes of catalyst is as shown in table 1 below.
table 1 catalyst n-847D the key technical indexes table
The purifying step of the present embodiment two sodium exhaust gas cleaners is:
(1) gas emission device 1 is discharged two sodium tail gas, enters scrubbing tower 2 and washs, and removes most of sodium salt composition and part NOx in tail gas; From scrubbing tower 2 tail gas out, enter mist eliminator 3 and remove acid mist; From mist eliminator 3 tail gas out, go deduster 4 to remove remaining acid mist and sodium salt particle;
(2) from deduster 4 tail gas out, enter the shell side of heat exchanger 5, from heat exchanger 5 tail gas out, by electric heater 6, be heated to 150 ℃, and after mixing with gas ammonia, enter ammonia reduction reactor 8;
(3) temperature in ammonia reduction reactor 8 is 180-220 ℃, mist reacts under the effect of catalyst, removes the sodium salt in tail gas, and reacted gas temperature is 250 ℃, gas enters the tube side of heat exchanger 5 from the outlet of ammonia reduction reactor 8, carry out heat exchange with the gas before reacting; Gas temperature in heat exchanger 5 shell sides raises, and the gas temperature in tube side reduces; After stable, the gas before reaction can reach 150 ℃ by heat exchanger 5 heat exchange, without heating by electric heater 6 again;
(4) reacted gas is by after the tube side of heat exchanger 5, and the tube side by heat exchanger 5 exports to exhaust apparatus 9, is discharged in air;
In above-mentioned steps (2), reducing gas tapping equipment 7, when producing gas ammonia, is discharged to auxiliary air in heat exchanger 5, mixes with two sodium tail gas, heats.Play the effect of regeneration, saved the energy.
In above-mentioned steps (3), the waste water that ammonia reduction reactor 8 produces, is discharged to wastewater treatment equipment 14 from pipeline 10;
After the long-term use of catalyst layer 11, can open the switch valve 15 in desalted water device 16 connecting pipes 10, use desalted water washing catalyst, soak after 60-120 minute and discharge; Repeated washing process 3-5 time; Reusable heat air purge catalyst layer 11, purges liquid object in catalyst layer 11 totally, discharges Liquid Residue, realizes catalyst regeneration.
The air that the present embodiment is discharged from the tube side outlet of heat exchanger 5, nitrous oxides concentration is less than 150 far below mg/Nm
3, 300 mg/Nm
3, (GB26131-2010 nitric acid industry pollutant emission national Specification: newly-built enterprise carried out atmosphere pollution (nitrogen oxide) concentration of emission limit value: 300 mg/Nm from 1 day March in 2011
3), heat exchange can be saved energy, can also reduce the thermal pollution of emission gases, protection of the environment.
Embodiment 2:
In the present embodiment, the content of catalyst layer 11 is identical with embodiment 1, and different is is divided into catalyst layer 11 two-layer, and two catalyst layers 11 is in parallel mutually, and the import of ammonia reduction reactor 8 is between two catalyst layers 11.Mist by two-layer catalyst, reacts more abundant respectively; Two-layer catalyst parallel running, has reduced the resistance of catalyst layer 11, has improved efficiency.
All the other 26S Proteasome Structure and Functions are identical with embodiment 1.
Although the present invention with embodiment openly as above; but it is not in order to limit protection scope of the present invention; any technical staff who is familiar with this technology, not departing from change and the retouching of doing in the spirit and scope of the present invention, all should belong to protection scope of the present invention.
Claims (10)
1. a sodium exhaust gas cleaner, it is characterized in that: it comprises gas emission device, scrubbing tower, mist eliminator, deduster, heat exchanger, reducing gas tapping equipment, ammonia reduction reactor and exhaust apparatus, gas emission device is connected with the import of scrubbing tower, the outlet of scrubbing tower is connected with the import of mist eliminator, the top exit of mist eliminator is connected with the import of deduster, the outlet of deduster is connected with the shell side import of heat exchanger, the shell side outlet of heat exchanger is connected with the import of ammonia reduction reactor, reducing gas tapping equipment is connected with the import of ammonia reduction reactor, the outlet of ammonia reduction reactor is connected with the tube side import of heat exchanger, the tube side outlet of heat exchanger is connected with exhaust apparatus, between said structure, by pipeline, connect, in described ammonia reduction reactor, be provided with catalyst layer.
2. two sodium exhaust gas cleaners according to claim 1, is characterized in that: on the pipeline between described connection heat exchanger shell pass outlet and the import of ammonia reduction reactor, be provided with electric heater.
3. two sodium exhaust gas cleaners according to claim 1 and 2, is characterized in that: on described mist eliminator, be provided with circulating pump, the import of circulating pump is connected with the outlet at bottom of mist eliminator, and the side import of circulation delivery side of pump and mist eliminator is connected.
4. two sodium exhaust gas cleaners according to claim 3, is characterized in that: described circulating pump has two, and two circulating pumps are arranged in parallel mutually.
5. two sodium exhaust gas cleaners according to claim 1 and 2, is characterized in that: described reducing gas tapping equipment is discharged reducing gas, and reducing gas is gas ammonia or synthetic ammonia relief gas.
6. two sodium exhaust gas cleaners according to claim 1 and 2, it is characterized in that: the exit of described ammonia reduction reactor is provided with wastewater treatment equipment, between the outlet of wastewater treatment equipment and ammonia reduction reactor, by pipeline, be connected, on pipeline, be provided with switch valve.
7. two sodium exhaust gas cleaners according to claim 1 and 2, is characterized in that: on described ammonia reduction reactor, be provided with desalted water device, between desalted water device and ammonia reduction reactor, by pipeline, be connected, be provided with switch valve on pipeline.
8. two sodium exhaust gas cleaners according to claim 1 and 2, is characterized in that: described catalyst layer has two-layer, and two catalyst layers is in parallel mutually, and the import of ammonia reduction reactor is between two catalyst layers.
9. two sodium exhaust gas cleaners according to claim 1 and 2, is characterized in that: described catalyst layer is for take the non-precious metal catalyst that activated alumina is carrier.
10. according to a purification method for two sodium exhaust gas cleaners described in claim 1～9 any one, it is characterized in that: the purifying step of two sodium tail gas is:
(1) gas emission device is discharged two sodium tail gas, enters scrubbing tower and washs, and removes most of sodium salt composition and part NOx in tail gas; From scrubbing tower tail gas out, enter mist eliminator and remove acid mist; From mist eliminator tail gas out, go deduster to remove remaining acid mist and sodium salt particle;
(2) from deduster tail gas out, enter the shell side of heat exchanger, from heat exchanger tail gas out, by electric heater, be heated to 150 ℃, and after mixing with reducing gas, enter ammonia reduction reactor;
(3) temperature in ammonia reduction reactor is 180-220 ℃, mist reacts under the effect of catalyst, removes the sodium salt in tail gas, and reacted gas temperature is 250 ℃, gas enters the tube side of heat exchanger from the outlet of ammonia reduction reactor, carry out heat exchange with the gas before reacting; Gas temperature in heat exchanger shell pass raises, and the gas temperature in tube side reduces; After stable, the gas before reaction can reach 150 ℃ by heat exchanger heat exchange, without heating by electric heater again;
(4) reacted gas is by after the tube side of heat exchanger, and the tube side by heat exchanger exports to exhaust apparatus, is discharged in air;
In above-mentioned steps (3), the waste water that ammonia reduction reactor produces, is discharged to wastewater treatment equipment from pipeline;
After the long-term use of catalyst layer, can open the switch valve in desalted water device connecting pipe, use desalted water washing catalyst, soak after 60-120 minute and discharge; Repeated washing process 3-5 time; Reusable heat air purge catalyst layer, purges liquid object in catalyst layer totally, discharges Liquid Residue, realizes catalyst regeneration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410078230.XA CN104162351B (en) | 2014-03-05 | 2014-03-05 | A kind of two sodium exhaust gas cleaner and purification methods thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410078230.XA CN104162351B (en) | 2014-03-05 | 2014-03-05 | A kind of two sodium exhaust gas cleaner and purification methods thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104162351A true CN104162351A (en) | 2014-11-26 |
| CN104162351B CN104162351B (en) | 2016-08-24 |
Family
ID=51906450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410078230.XA Active CN104162351B (en) | 2014-03-05 | 2014-03-05 | A kind of two sodium exhaust gas cleaner and purification methods thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104162351B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06226103A (en) * | 1993-02-05 | 1994-08-16 | Sumitomo Heavy Ind Ltd | Recycling of exhaust gas treatment catalyst and treatment of exhaust gas |
| CN201783294U (en) * | 2010-09-01 | 2011-04-06 | 中国海洋石油总公司 | Treatment device for NOX gas in tail gas produced by nitrate |
| CN102380314A (en) * | 2011-11-03 | 2012-03-21 | 杭州龙山化工有限公司 | Ammonia reduction reactor |
| CN202893188U (en) * | 2012-11-14 | 2013-04-24 | 中国石油天然气股份有限公司 | Tail gas treatment system for nitric acid production equipment |
| CN203764140U (en) * | 2014-03-05 | 2014-08-13 | 杭州龙山化工有限公司 | Double-sodium tail gas purifying device |
-
2014
- 2014-03-05 CN CN201410078230.XA patent/CN104162351B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06226103A (en) * | 1993-02-05 | 1994-08-16 | Sumitomo Heavy Ind Ltd | Recycling of exhaust gas treatment catalyst and treatment of exhaust gas |
| CN201783294U (en) * | 2010-09-01 | 2011-04-06 | 中国海洋石油总公司 | Treatment device for NOX gas in tail gas produced by nitrate |
| CN102380314A (en) * | 2011-11-03 | 2012-03-21 | 杭州龙山化工有限公司 | Ammonia reduction reactor |
| CN202893188U (en) * | 2012-11-14 | 2013-04-24 | 中国石油天然气股份有限公司 | Tail gas treatment system for nitric acid production equipment |
| CN203764140U (en) * | 2014-03-05 | 2014-08-13 | 杭州龙山化工有限公司 | Double-sodium tail gas purifying device |
Non-Patent Citations (4)
| Title |
|---|
| 《环境保护》编委会编: "《环境保护》", 31 May 2010, 中国电力出版社 * |
| 《表面处理工艺手册》编审委员会编: "《表面处理工艺手册》", 31 January 1991, 上海科学技术出版社 * |
| 刘建民等主编: "《火电站氮氧化物控制技术》", 31 December 2012, 中国电力出版社 * |
| 蒋文举主编: "《烟气脱硫脱硝技术手册 第二版》", 30 April 2012, 化学工业出版社 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104162351B (en) | 2016-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103894051B (en) | A kind of smoke-gas wet desulfurization denitrification integral system and method | |
| CN107551813B (en) | Ship desulfurization and denitrification integrated process and device | |
| CN105457488A (en) | Catalyst unified plasma nitric oxide removing device and method | |
| CN102872695A (en) | Method for sintering and desulfurizing enriched smoke to prepare sulfuric acid | |
| CN105013315A (en) | Wet method flue gas desulphurization denitration dedusting integration system | |
| CN109675436A (en) | A kind of system and method for flue gas pollutant combined desulfurization and denitration | |
| CN102614775A (en) | Method for removing and recovering low concentration sulfur dioxide in industrial exhaust gas | |
| CN203764140U (en) | Double-sodium tail gas purifying device | |
| CN102847430B (en) | System and technology for cleaning flue gas | |
| CN211575903U (en) | Take waste heat recovery's application powder curing oven high temperature exhaust treatment device | |
| CN104399370A (en) | Lower temperature flue gas SCR (Selective Catalytic Reduction) denitration system and process | |
| CN202590630U (en) | Coal-fired boiler low-temperature selective catalytic reduction (SCR) fixed bed smoke denitration device | |
| CN201776085U (en) | Heating type denitration device | |
| CN101927125B (en) | Dual-circulation absorption tower | |
| CN201783294U (en) | Treatment device for NOX gas in tail gas produced by nitrate | |
| CN107020004A (en) | A kind of apparatus and method of plasmaassisted ammonia absorption coal-fired flue-gas simultaneous SO_2 and NO removal decarburization | |
| CN206103709U (en) | Glass high -temperature furnace flue gas energy saving and emission reduction clean system | |
| CN212492324U (en) | Low-temperature flue gas deep denitration and desulfurization system | |
| CN209952555U (en) | Smoke treatment system for red mud wet rotary kiln | |
| CN104162351A (en) | Double-sodium tail gas clarification device and clarification method | |
| CN204563937U (en) | A kind of low-temperature smoke air SCR denitrating system | |
| CN205832930U (en) | Coking type smoke pollutant removal and flue gas regenerative apparatus and coking smoke processing system | |
| CN213078024U (en) | High concentration ethylene oxide exhaust treatment device | |
| CN210993616U (en) | Internode extrinsic cycle low pressure nitrate fume absorbing device | |
| CN209612612U (en) | Remove tar and the device of collaboration denitration in coke oven flue gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |