CN103301736A - Ammonia escape prevention device in desulfurization and denitrification of flue gas by using ammonia process - Google Patents
Ammonia escape prevention device in desulfurization and denitrification of flue gas by using ammonia process Download PDFInfo
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- CN103301736A CN103301736A CN2013101242499A CN201310124249A CN103301736A CN 103301736 A CN103301736 A CN 103301736A CN 2013101242499 A CN2013101242499 A CN 2013101242499A CN 201310124249 A CN201310124249 A CN 201310124249A CN 103301736 A CN103301736 A CN 103301736A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention relates to an ammonia escape prevention device in desulfurization and denitrification of flue gas by using an ammonia process. The ammonia escape prevention device comprises an oxidized air and original flue gas inlet, a purified flue gas outlet, a desulfurization tower, a mist eliminator, an ammonia washing section, an absorption section, a concentration section, an oxidation section, a circulating ammonia washing pump and a circulating ammonia washing tank, wherein the concentration section is connected upwards to the absorption section, the absorption section is connected upwards to the ammonia washing section, the ammonia washing section is connected upwards to the mist eliminator, the mist eliminator is connected upwards to the desulfurization tower, the purified flue gas outlet is connected and formed in the desulfurization tower, the ammonia washing section is connected to the circulating ammonia washing tank through a pipeline, the circulating ammonia washing pump is arranged on the pipeline which is connected from the ammonia washing section to the circulating ammonia washing tank, the oxidation section is connected to the absorption section and the concentration section through pipelines, a primary circulating pump is arranged on the pipelines which is connected from the oxidation section to the absorption section and the concentration section, the ammonia washing section is connected to the circulating ammonia washing tank through the pipeline and meanwhile connected to the absorption section and the oxidation section through the pipelines, and one ammonia washing section is arranged in front of the mist eliminator. The ammonia escape prevention device is simple in overall structure, convenient to operate and use, good in stability and high in reliability.
Description
Technical field
The present invention relates to the flue gas ammonia method desulfurizing denitrification apparatus, relate in particular to and prevent the escaping of ammonia device in the flue gas ammonia method desulfurizing denitration.
Background technology
The out of stock integrated technology of the ammonia process of desulfurization of prior art, ammonia process of desulfurization denitration and the ammonia process of desulfurization is single to the regulating measure of the escaping of ammonia, mainly be the escape amount of controlling ammonia in the clean flue gas by the addition of regulating ammoniacal liquor, the addition that reduces ammoniacal liquor must cause increasing of clean sulfur dioxide in flue gas and oxynitrides content.
Summary of the invention
The objective of the invention is to, overcome the deficiencies in the prior art part, provide in a kind of flue gas ammonia method desulfurizing denitration and prevent the escaping of ammonia device, be before demister, to increase by one to wash the ammonia section, use ammonium sulfate and the ammonium sulfite mixed solution of PH＜3 that flue gas is sprayed, absorb ammonia and aerosol in the flue gas.Can be with clean sulfur dioxide in flue gas and oxynitrides control in ammonia in reducing flue gas and the aerosol load lower.
Prevent the escaping of ammonia device in the flue gas ammonia method desulfurizing denitration of the present invention, include oxidation air, former gas approach, clean exhanst gas outlet, desulfurizing tower, demister, wash ammonia section, absorber portion, enriching section, oxidation panel, one-level circulating pump, circulating slot, secondary circulating pump, ammonia pump is washed in circulation and the ammonia groove is washed in circulation.Oxidation air is connected to oxidation panel by pipeline, oxidation panel upwards is connected to enriching section, enriching section is to being outside equipped with former gas approach, enriching section upwards is connected to absorber portion, absorber portion upwards is connected to washes the ammonia section, wash the ammonia section and upwards be connected to demister, demister upwards is connected to desulfurizing tower, is connected with clean exhanst gas outlet on the desulfurizing tower.Wash the ammonia section and be connected to circulation by pipeline and wash the ammonia groove, being connected to circulation and washing on the pipeline of ammonia groove by washing the ammonia section, being provided with circulation and washing ammonia pump.Oxidation panel is connected to absorber portion and enriching section by pipeline, is being connected on the pipeline of absorber portion and enriching section by oxidation panel, is provided with the one-level circulating pump.Wash the ammonia section by pipeline be connected to the circulation wash the ammonia groove, also be connected to absorber portion and oxidation panel by pipeline simultaneously.The lower end of enriching section is connected to circulating slot by pipeline, and circulating slot is connected to enriching section by pipeline and secondary circulating pump again and the ammonia groove is washed in circulation.Prevent in the flue gas ammonia method desulfurizing denitration of the present invention that the escaping of ammonia device from being on the out of stock integrated basis of the ammonia process of desulfurization, ammonia process of desulfurization denitration and the ammonia process of desulfurization in prior art, to be provided with one and to wash the ammonia section before demister.Flue gas after washing the ammonia section enters demister through liquid trap and fiberglass tower tray again, has the glass reinforced plastic pipe of a plurality of bands " U " type pipe to pass at tower tray and washes the ammonia section.The flue gas of the mixed liquor that uses the ammonium sulfate of PH＜3 and ammonium sulfite before to demister sprays ammonia and the aerosol that sponges part in the flue gas, enters demister through the flue gas of washing after the ammonia section, enters chimney through behind the demister again.The technology of flue gas ammonia method desulfurizing can be divided into oxidation panel, enriching section, absorber portion and demist section substantially.Oxidation panel and absorber portion are set up the one-level circulation by the one-level circulating pump, and the demister flushing water enters absorber portion.Enriching section and circulating slot are set up the secondary circulation by the secondary circulating pump.The one-level circulating pump has arm to lead to the enriching section sprinkling in the time of normal the operation, and the secondary circulating pump also has the pipeline towards absorber portion to the oxidation panel return duct.This technology is to increase by one at the secondary circulating-pump outlet to lead to the pipeline that the ammonia groove is washed in circulation, washes the flue gas of ammonia pump before to demister by circulation and sprays, and sets up and washes the ammonia circulation.A spray liquid part is back to circulation and washes the return duct of an ammonia groove part towards absorber portion to oxidation panel, finally arrives oxidation panel.Suitably reduce the secondary circulating pump according to technological requirement and lead to absorber portion to the flow of oxidation panel return duct.Flue gas enters by liquid trap and washes the ammonia section, and what link to each other with liquid trap is the tower tray of fiberglass material.Flue gas is washed ammoniacal liquor spray through circulation washing the ammonia section, removes part ammonia and S02 in the flue gas.Liquid behind spray part after liquid trap enters return duct enters circulation and washes the ammonia groove, and a part enters absorber portion to the return duct of oxidation panel, finally arrives oxidation panel.The spray area of spray liquid is at 3～5m3/h, the PH of spray liquid＜3, and density can be set up multi-stage spray according to actual conditions below degree of crystallinity.Flue gas after washing the ammonia section enters liquid trap through liquid trap and fiberglass tower tray again, has the glass reinforced plastic pipe of a plurality of bands " U " type pipe to pass at tower tray and washes the ammonia section.The glass reinforced plastic pipe of liquid trap flushing water by this band " U " type pipe passes to be washed the ammonia section and enters absorber portion or conversion zone.Be provided with the flushing water shower nozzle that upwards sprays and regularly spray and prevent ammonium sulfate crystallization washing ammonia section top washing ammonia section spray liquid conduit upper.On-line measuring device is installed washing all spray equipment tops of ammonia section, mainly measures the ammonia content in the flue gas, the SO in the flue gas
2The content of the oxynitrides in content, the flue gas.Wash in the ammonia section when flushing water begins to spray measurement data not as a reference.The main sulfur acid ammonium of spray liquid, a spot of ammonium sulfite and a spot of ammoniacal liquor, global density is bigger, is difficult for entering clean flue gas with aerocolloidal form, also can not cause secondary pollution to atmosphere even if enter atmosphere with aerocolloidal form on a small quantity.The ammonium sulfate that circulating slot is arranged in the ammonia groove is washed in circulation, and washes the ammonia section and enters absorber portion to the spray liquid of oxidation panel return duct and form a fluid balance.In practical operation, the content that enters the ammonia of the flue gas of washing the ammonia section can be controlled at 20mg/Nm
3Below.Can control at 3mg/Nm through the content of washing ammonia in the flue gas after the ammonia section
3Below.The clean sulfur in smoke content of control that can the short time when absorber portion or conversion zone assimilation effect are bad and the content of oxynitrides.Strengthen the stability of system, increased the controllability of system.Its principle: it is the ammonia that can absorb in the flue gas in that the flue gas that contains ammonia is sprayed that ammonium sulfate is acid.In washing the ammonia section in the flue gas sulfur dioxide can generate ammonium hydrogen sulfate or ammonium bisulfite with the reaction of ammonium sulfate or ammonium sulfite, when ammonia is excessive, can finally generate ammonium sulfate and ammonium sulfite.Can be with clean sulfur dioxide in flue gas and oxynitrides control in ammonia that like this can be in reducing flue gas and the aerosol load lower.The selection of washing the ammonia section according to different technology is according to the position of demister and quantity and definite, washes the ammonia section just below the demister section, has several demisters that several ammonia sections of washing are just arranged.Individual processes is provided with circulating slot, but the secondary circulating pump is arranged, and can take over the road at secondary circulating-pump outlet place and wash the ammonia groove towards circulation.Can only reduce the content of clean sulfur dioxide in flue gas and the ammonia content in the flue gas for ammonia desulfurizing process.
Prevent the escaping of ammonia device in the flue gas ammonia method desulfurizing denitration of the present invention, overall structure is simple, and is easy for operation, good stability, reliability height.Prevent the escaping of ammonia device in the flue gas ammonia method desulfurizing denitration of the present invention, wash the ammonia section by before demister, increasing, can ammonia and aerosol load in reducing clean flue gas in, with clean sulfur dioxide in flue gas content control at 50mg/Nm
3Below, oxynitrides is controlled at 100mg/Nm
3Below.Control ammonia and aerocolloidal content in the clean flue gas effectively, reduced the secondary pollution to atmosphere.
Description of drawings
Accompanying drawing 1 is the principle structure schematic diagram that prevents the escaping of ammonia device in the flue gas ammonia method desulfurizing denitration of the present invention.The clean exhanst gas outlet 4-of the former gas approach 3-of 1-oxidation air 2-desulfurizing tower 5-demister 6-washes ammonia section 7-absorber portion 8-enriching section 9-oxidation panel 10-one-level circulating pump 11-circulating slot 12-secondary circulating pump 13-circulation and washes ammonia pump 14-circulation and wash the ammonia groove.
The specific embodiment
Referring now to accompanying drawing 1, be described as follows in conjunction with the embodiments: prevent the escaping of ammonia device in the flue gas ammonia method desulfurizing denitration of the present invention, include oxidation air 1, former gas approach 2, clean exhanst gas outlet 3, desulfurizing tower 4, demister 5, wash ammonia section 6, absorber portion 7, enriching section 8, oxidation panel 9, one-level circulating pump 10, circulating slot 11, secondary circulating pump 12, ammonia pump 13 is washed in circulation and ammonia groove 14 is washed in circulation.Oxidation air 1 is connected to oxidation panel 9 by pipeline, oxidation panel 9 upwards is connected to enriching section 8,8 pairs of enriching sections are outside equipped with former gas approach 2, enriching section 8 upwards is connected to absorber portion 7, absorber portion 7 upwards is connected to washes ammonia section 6, wash ammonia section 6 and upwards be connected to demister 5, demister 5 upwards is connected to desulfurizing tower 4, is connected with clean exhanst gas outlet 3 on the desulfurizing tower 4.Wash ammonia section 6 and be connected to circulation by pipeline and wash ammonia groove 14, being connected to circulation and washing on the pipeline of ammonia groove 14 by washing ammonia section 6, being provided with circulation and washing ammonia pump 13.Oxidation panel 9 is connected to absorber portion 7 and enriching section 8 by pipeline, being connected on the pipeline of absorber portion 7 and enriching section 8 by oxidation panel 9, is provided with one-level circulating pump 10.Wash ammonia section 6 by pipeline be connected to the circulation wash ammonia groove 14, also be connected to absorber portion 7 and oxidation panel 9 by pipeline simultaneously.The lower end of enriching section 8 is connected to circulating slot 11 by pipeline, and circulating slot 11 is connected to enriching section 8 by pipeline and secondary circulating pump 12 again and ammonia groove 14 is washed in circulation.Prevent in the flue gas ammonia method desulfurizing denitration of the present invention that the escaping of ammonia device from being on the out of stock integrated basis of the ammonia process of desulfurization, ammonia process of desulfurization denitration and the ammonia process of desulfurization in prior art, to be provided with one and to wash the ammonia section before demister.Flue gas after washing the ammonia section enters demister through liquid trap and fiberglass tower tray again, has the glass reinforced plastic pipe of a plurality of bands " U " type pipe to pass at tower tray and washes the ammonia section.The flue gas of the mixed liquor that uses the ammonium sulfate of PH＜3 and ammonium sulfite before to demister sprays ammonia and the aerosol that sponges part in the flue gas, enters demister through the flue gas of washing after the ammonia section, enters chimney through behind the demister again.The technology of flue gas ammonia method desulfurizing can be divided into oxidation panel, enriching section, absorber portion and demist section substantially.Oxidation panel and absorber portion are set up the one-level circulation by the one-level circulating pump, and the demister flushing water enters absorber portion.Enriching section and circulating slot are set up the secondary circulation by the secondary circulating pump.The one-level circulating pump has arm to lead to the enriching section sprinkling in the time of normal the operation, and the secondary circulating pump also has the pipeline towards absorber portion to the oxidation panel return duct.This technology is to increase by one at the secondary circulating-pump outlet to lead to the pipeline that the ammonia groove is washed in circulation, washes the flue gas of ammonia pump before to demister by circulation and sprays, and sets up and washes the ammonia circulation.A spray liquid part is back to circulation and washes the return duct of an ammonia groove part towards absorber portion to oxidation panel, finally arrives oxidation panel.Suitably reduce the secondary circulating pump according to technological requirement and lead to absorber portion to the flow of oxidation panel return duct.Flue gas enters by liquid trap and washes the ammonia section, and what link to each other with liquid trap is the tower tray of fiberglass material.Flue gas is washed ammoniacal liquor spray through circulation washing the ammonia section, removes part ammonia and SO in the flue gas
2Liquid behind spray part after liquid trap enters return duct enters circulation and washes the ammonia groove, and a part enters absorber portion to the return duct of oxidation panel, finally arrives oxidation panel.The spray area of spray liquid is at 3～5m
3/ h, the PH of spray liquid＜3, density can be set up multi-stage spray according to actual conditions below degree of crystallinity.Flue gas after washing the ammonia section enters liquid trap through liquid trap and fiberglass tower tray again, has the glass reinforced plastic pipe of a plurality of bands " U " type pipe to pass at tower tray and washes the ammonia section.The glass reinforced plastic pipe of liquid trap flushing water by this band " U " type pipe passes to be washed the ammonia section and enters absorber portion or conversion zone.Be provided with the flushing water shower nozzle that upwards sprays and regularly spray and prevent ammonium sulfate crystallization washing ammonia section top washing ammonia section spray liquid conduit upper.On-line measuring device is installed washing all spray equipment tops of ammonia section, mainly measures the ammonia content in the flue gas, the SO in the flue gas
2The content of the oxynitrides in content, the flue gas.Wash in the ammonia section when flushing water begins to spray measurement data not as a reference.The main sulfur acid ammonium of spray liquid, a spot of ammonium sulfite and a spot of ammoniacal liquor, global density is bigger, is difficult for entering clean flue gas with aerocolloidal form, also can not cause secondary pollution to atmosphere even if enter atmosphere with aerocolloidal form on a small quantity.The ammonium sulfate that circulating slot is arranged in the ammonia groove is washed in circulation, and washes the ammonia section and enters absorber portion to the spray liquid of oxidation panel return duct and form a fluid balance.In practical operation, the content that enters the ammonia of the flue gas of washing the ammonia section can be controlled at 20mg/Nm
3Below.Can control at 3mg/Nm through the content of washing ammonia in the flue gas after the ammonia section
3Below.The clean sulfur in smoke content of control that can the short time when absorber portion or conversion zone assimilation effect are bad and the content of oxynitrides.Strengthen the stability of system, increased the controllability of system.Its principle: it is the ammonia that can absorb in the flue gas in that the flue gas that contains ammonia is sprayed that ammonium sulfate is acid.In washing the ammonia section in the flue gas sulfur dioxide can generate ammonium hydrogen sulfate or ammonium bisulfite with the reaction of ammonium sulfate or ammonium sulfite, when ammonia is excessive, can finally generate ammonium sulfate and ammonium sulfite.Can be with clean sulfur dioxide in flue gas and oxynitrides control in ammonia that like this can be in reducing flue gas and the aerosol load lower.The selection of washing the ammonia section according to different technology is according to the position of demister and quantity and definite, washes the ammonia section just below the demister section, has several demisters that several ammonia sections of washing are just arranged.Individual processes is provided with circulating slot, but the secondary circulating pump is arranged, and can take over the road at secondary circulating-pump outlet place and wash the ammonia groove towards circulation.Can only reduce the content of clean sulfur dioxide in flue gas and the ammonia content in the flue gas for ammonia desulfurizing process.Prevent the escaping of ammonia device in the flue gas ammonia method desulfurizing denitration of the present invention, overall structure is simple, and is easy for operation, good stability, reliability height.Prevent the escaping of ammonia device in the flue gas ammonia method desulfurizing denitration of the present invention, wash the ammonia section by before demister, increasing, can ammonia and aerosol load in reducing clean flue gas in, with clean sulfur dioxide in flue gas content control at 50mg/Nm
3Below, oxynitrides is controlled at 100mg/Nm
3Below.Control ammonia and aerocolloidal content in the clean flue gas effectively, reduced the secondary pollution to atmosphere.
Claims (4)
1. prevent the escaping of ammonia device in the flue gas ammonia method desulfurizing denitration, include oxidation air (1), former gas approach (2), clean exhanst gas outlet (3), desulfurizing tower (4), demister (5), wash ammonia section (6), absorber portion (7), enriching section (8), oxidation panel (9), one-level circulating pump (10), circulating slot (11), secondary circulating pump (12), ammonia pump (13) is washed in circulation and ammonia groove (14) is washed in circulation, it is characterized in that oxidation air (1) is connected to oxidation panel (9) by pipeline, oxidation panel (9) upwards is connected to enriching section (8), enriching section (8) is to being outside equipped with former gas approach (2), enriching section (8) upwards is connected to absorber portion (7), absorber portion (7) upwards is connected to washes ammonia section (6), wash ammonia section (6) and upwards be connected to demister (5), demister (5) upwards is connected to desulfurizing tower (4), is connected with clean exhanst gas outlet (3) on the desulfurizing tower (4); Wash ammonia section (6) and be connected to circulation by pipeline and wash ammonia groove (14), being connected to circulation and washing on the pipeline of ammonia groove (14) by washing ammonia section (6), being provided with circulation and washing ammonia pump (13); Oxidation panel (9) is connected to absorber portion (7) and enriching section (8) by pipeline, be connected to by oxidation panel (9) on the pipeline of absorber portion (7) and enriching section (8), be provided with one-level circulating pump (10) wash ammonia section (6) by pipeline be connected to the circulation wash ammonia groove (14), also be connected to absorber portion (7) and oxidation panel (9) by pipeline simultaneously.
2. prevent the escaping of ammonia device in the flue gas ammonia method desulfurizing denitration according to claim 1, the lower end that it is characterized in that enriching section (8) is connected to circulating slot (11) by pipeline, and circulating slot (11) is connected to enriching section (8) by pipeline and secondary circulating pump (12) again and ammonia groove (14) is washed in circulation.
3. prevent the escaping of ammonia device in the flue gas ammonia method desulfurizing denitration according to claim 1, it is characterized in that before demister, being provided with one and wash the ammonia section.
4. prevent the escaping of ammonia device in the flue gas ammonia method desulfurizing denitration according to claim 1, it is characterized in that the flue gas after washing the ammonia section enters demister through liquid trap and fiberglass tower tray again, has the glass reinforced plastic pipe of a plurality of bands " U " type pipe to pass at tower tray and washes the ammonia section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310124249.9A CN103301736B (en) | 2012-11-15 | 2013-04-10 | Ammonia escape prevention device in desulfurization and denitrification of flue gas by using ammonia process |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104597116A CN102908890A (en) | 2012-11-15 | 2012-11-15 | Device for preventing ammonia escape in ammonia desulfurization and denitration of flue gases |
| CN2012104597116 | 2012-11-15 | ||
| CN201210459711.6 | 2012-11-15 | ||
| CN201310124249.9A CN103301736B (en) | 2012-11-15 | 2013-04-10 | Ammonia escape prevention device in desulfurization and denitrification of flue gas by using ammonia process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103301736A true CN103301736A (en) | 2013-09-18 |
| CN103301736B CN103301736B (en) | 2015-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104597116A Withdrawn CN102908890A (en) | 2012-11-15 | 2012-11-15 | Device for preventing ammonia escape in ammonia desulfurization and denitration of flue gases |
| CN201310124249.9A Active CN103301736B (en) | 2012-11-15 | 2013-04-10 | Ammonia escape prevention device in desulfurization and denitrification of flue gas by using ammonia process |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012104597116A Withdrawn CN102908890A (en) | 2012-11-15 | 2012-11-15 | Device for preventing ammonia escape in ammonia desulfurization and denitration of flue gases |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104258719A (en) * | 2014-09-04 | 2015-01-07 | 山东清能创新环保科技有限公司 | Desulfuration, denitration and dust removal (PM2.5 removal) three-in-one technical system for boiler exhaust gas by adopting ammonia method |
| CN105126589A (en) * | 2015-09-16 | 2015-12-09 | 鲁西化工集团股份有限公司动力分公司 | Ammonia desulfurization equipment and process |
| CN105771611A (en) * | 2016-01-27 | 2016-07-20 | 西安航天源动力工程有限公司 | Graded tower internal crystallization ammonia-process desulfurization system |
| CN105771591A (en) * | 2016-01-27 | 2016-07-20 | 西安航天源动力工程有限公司 | Graded tower internal crystallization ammonia-process desulfurization method |
| WO2018214991A1 (en) * | 2017-05-25 | 2018-11-29 | Jiangnan Environmental Protection Group Inc. | Ammonia-based desulfurization process and apparatus through ammonia-adding in different chambers |
| US10343110B2 (en) | 2017-05-25 | 2019-07-09 | Jiangnan Environmental Protection Group Inc. | Dust removal and desulfurization of FCC exhaust gas |
| US10357741B2 (en) | 2017-09-07 | 2019-07-23 | Jiangnan Environmental Protection Group Inc. | Method for controlling aerosol production during absorption in ammonia desulfurization |
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| CN110201508A (en) * | 2019-05-09 | 2019-09-06 | 山东明晟化工工程有限公司 | A kind of the escaping of ammonia and ammonia process of desulfurization aerosol combination treatment method |
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| CN114917743A (en) * | 2022-05-19 | 2022-08-19 | 江苏新世纪江南环保股份有限公司 | Device and method for controlling ammonia escape of ammonia decarburization system |
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| CN104258719A (en) * | 2014-09-04 | 2015-01-07 | 山东清能创新环保科技有限公司 | Desulfuration, denitration and dust removal (PM2.5 removal) three-in-one technical system for boiler exhaust gas by adopting ammonia method |
| CN105126589A (en) * | 2015-09-16 | 2015-12-09 | 鲁西化工集团股份有限公司动力分公司 | Ammonia desulfurization equipment and process |
| CN105771611A (en) * | 2016-01-27 | 2016-07-20 | 西安航天源动力工程有限公司 | Graded tower internal crystallization ammonia-process desulfurization system |
| CN105771591A (en) * | 2016-01-27 | 2016-07-20 | 西安航天源动力工程有限公司 | Graded tower internal crystallization ammonia-process desulfurization method |
| US10406477B2 (en) | 2017-03-15 | 2019-09-10 | Jiangnan Environmental Protection Group Inc. | Method and apparatus for removing sulfur oxides from gas |
| US10413864B2 (en) | 2017-03-15 | 2019-09-17 | Jiangnan Environmental Protection Group Inc. | Method and apparatus for removing sulfur oxides from gas |
| US10675584B2 (en) | 2017-03-15 | 2020-06-09 | Jiangnan Environmental Protection Group Inc. | Method and apparatus for removing sulfur oxides from gas |
| WO2018214991A1 (en) * | 2017-05-25 | 2018-11-29 | Jiangnan Environmental Protection Group Inc. | Ammonia-based desulfurization process and apparatus through ammonia-adding in different chambers |
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| Publication number | Publication date |
|---|---|
| CN103301736B (en) | 2015-02-25 |
| CN102908890A (en) | 2013-02-06 |
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