CN112892182A - Spray tower with hollow fiber membrane as filler and flue gas treatment system thereof - Google Patents
Spray tower with hollow fiber membrane as filler and flue gas treatment system thereof Download PDFInfo
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- CN112892182A CN112892182A CN202110289946.4A CN202110289946A CN112892182A CN 112892182 A CN112892182 A CN 112892182A CN 202110289946 A CN202110289946 A CN 202110289946A CN 112892182 A CN112892182 A CN 112892182A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/76—Gas phase processes, e.g. by using aerosols
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8637—Simultaneously removing sulfur oxides and nitrogen oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/864—Removing carbon monoxide or hydrocarbons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8678—Removing components of undefined structure
- B01D53/8687—Organic components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/104—Ozone
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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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
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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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
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2
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Abstract
A spray tower using a hollow fiber membrane as a filler and a flue gas treatment system thereof. The surface of a hollow fiber membrane filament loaded with a catalyst is used as a liquid membrane loading surface; the flue gas to be treated is mixed with ozone and then is input through the tube pass of the hollow fiber membrane wire, the pressure is greater than the sum of the bubble point pressure and the liquid membrane resistance, the flue gas is separated out from the surface of the membrane wire, and the flue gas is firstly contacted with the reaction absorption liquid under the condition of clinging to the catalyst in an aeration mode from the lower part of the absorption liquid and then contacted with the outer surface of the liquid membrane, so that the mass transfer area and the catalytic efficiency are greatly improved. The method can be widely used in the chemical process of liquid-gas exchange, the smoke treatment of large engines, garbage incineration, petrochemical fuel combustion and smelting industries, VOC treatment, carbon dioxide capture and other occasions. Has the outstanding advantages of small volume, high efficiency, thorough treatment, resource recovery and the like.
Description
Technical Field
A spray tower using a hollow fiber membrane as a filler and a flue gas treatment system thereof.
Background
The packed tower is a gas-liquid mass transfer device with wide application, and the general principle is as follows: the upper part of one tank body is provided with a spray header which sprays reaction absorption liquid, and gas to be reacted, such as flue gas, is injected into the bottom of the tank body. Sometimes, the flue gas is also bubbled out from the liquid at the bottom of the tank. The middle of the tank body is provided with a hollow filler which is usually made of ceramic, glass, metal, plastic and other materials. The packing includes regular packing and bulk packing, and the regular packing can be classified into grid packing, corrugated packing, pulse packing and the like according to the geometrical structure of the regular packing. The bulk filling is usually in the form of pall rings, raschig rings, etc. The liquid flowing from top to bottom wets the surface of the filler and generates a liquid film on the surface of the filler. The gas from bottom to top contacts with the reaction and absorption liquid in the liquid film to generate reaction and realize mass transfer.
However, conventional packed columns have several inherent disadvantages:
1. in the traditional packed tower, gas contacts with a liquid film from the outside, and the gas contacts with the liquid film from the outside in a plane. The ideal process is that gas can contact the liquid film from the bottom surface of the liquid film, then break through the liquid film, and in the process of breaking through the liquid film, the gas can contact the gas part of the liquid more fully under the action of micro-bubble pressure, and the effect is more sufficient.
2. There have also been attempts to use catalyst-supporting fillers in the conventional filler. However, the filler is first encapsulated by the liquid film and is difficult to directly contact the reaction gas. These catalysts are difficult to function in practice. Ideally, the reaction gas and the reaction liquid can be in good contact with the catalyst, and the three can react at the same interface.
3. A traditional packed tower is always provided with an aeration link, but aeration mass transfer and liquid film mass transfer are two relatively independent links. Moreover, there is a limited application of "bubble-free aeration". The ideal structure is that the aeration mass transfer link and the filler liquid film mass transfer link are integrated, and a larger mass transfer area can be obtained.
If these three problems can be properly solved, the efficiency of the packed spray tower can be greatly improved.
The inventor does not find the existing related scheme through searching.
Disclosure of Invention
In this respect, the solution proposed by the present invention is:
1. the hollow fiber membrane film wire is used as a filler in a filler spray tower, the surface of the hollow fiber membrane film wire is used as a liquid film loading surface, and a liquid film is formed on the surface of the membrane wire by reaction absorption liquid sent by a spray head; the hollow fiber membrane filaments are membrane filaments loaded with a catalyst; mixing the gas to be treated with ozone, and inputting the gas to be treated through the tube pass of the hollow fiber membrane filaments;
2. the hollow fiber membrane filaments are membrane filaments loaded with a catalyst;
3. mixing the flue gas to be treated with ozone, and inputting the mixed flue gas into the hollow fiber membrane filaments through the tube pass; the pressure of the input gas is greater than the sum of the bubble point pressure breaking through the hollow fiber membrane and the resistance of the liquid membrane, the gas is separated out from the surface of the membrane wire, firstly has mass transfer reaction with the bottom of the liquid membrane, then has reaction with more positions in the liquid membrane body in a micro-bubble mode, then leaves the liquid membrane, and has mass transfer reaction on the outer surface of the liquid membrane at other positions. Therefore, the reaction absorption liquid, the reaction gas and the catalyst are closely contacted on the surface of the membrane wire to generate reaction and mass transfer;
4. the reaction absorption liquid sent by the spray header is taken away under the action of gravity, so that the liquid film is promoted to be updated. Meanwhile, the generated shearing force also releases microbubbles on the surface of the membrane wire, and the separated microbubbles are contacted with droplets in the environment and continuously react and transfer mass with the outer surfaces of other liquid membranes in the way.
According to the principle, the invention provides a concrete structure of a spray tower using a hollow fiber membrane as a filler and a flue gas treatment system thereof.
Spray tower and flue gas processing system with hollow fiber membrane as filler, its characterized in that: the hollow fiber membrane film wire is used as a filler in a filler spray tower, the surface of the hollow fiber membrane film wire is used as a liquid film loading surface, and a liquid film is formed on the surface of the membrane wire by reaction absorption liquid sent by a spray head; the hollow fiber membrane filaments are membrane filaments loaded with a catalyst; mixing the flue gas to be treated with ozone, and inputting the mixed flue gas into the hollow fiber membrane filaments through the tube pass; the pressure of the input gas is greater than the sum of the bubble point pressure of breaking through the hollow fiber membrane and the surface resistance of the liquid membrane.
Furthermore, the upper part of the box body of the spray tower is provided with a purified air outlet and a spray header; a curtain type membrane component made of a plurality of layers of hollow fiber membranes is arranged below or on the side of the spray head; the curtain-type membrane assemblies are arranged in a longitudinally and transversely staggered mode respectively; a supporting uniform flow screen plate is arranged between each layer of membrane module; the membrane filaments adopted by the curtain-type membrane component are membrane filaments loaded with a catalyst; reaction absorption liquid at the lower part of the box body of the spray tower is pumped to the spray header through an absorption liquid circulating pump; the bottom of the reaction absorption liquid is connected with an absorption liquid recovery and regeneration system; an ozone reactor is arranged outside the box body of the spray tower; the flue gas to be treated enters an ozone reactor from a dust-removing flue gas inlet; ozone enters the ozone reactor from the ozone inlet; the air outlet end of the ozone reactor is connected with the air inlet ends of all the curtain-type membrane assemblies through pipelines.
Further, the flue gas treatment system is formed by sequentially connecting a hollow fiber membrane dust remover, a spray tower with a hollow fiber membrane as a filler, an ozone supply system and an ozone destructor; wherein, the flue gas supplied to the spray tower with the hollow fiber membrane as the filler by the hollow fiber membrane dust remover contains dust with the particle size of more than 2.5 microns and the dust content is lower than 20ug/m for carrying out the high-speed thin film cultivation; the ozone destructor is made using a catalyst comprising a manganese oxide material.
Drawings
FIG. 1 is a schematic view showing an example of the spray tower using hollow fiber membranes as packing in "spray tower using hollow fiber membranes as packing and flue gas treatment system thereof". In the figure: (01) a dust-removing flue gas inlet; (02) an ozone inlet; (03) an ozone reactor; (04) an absorption liquid; (05) supporting the uniform flow net plate; (06) a transverse curtain membrane assembly; (07) a longitudinal curtain membrane assembly; (08) a transverse curtain membrane assembly; (09) a shower head; (10) a clean air outlet; (11) a reaction absorption liquid circulating pump; (12) and a reaction absorption liquid recycling and updating system.
FIG. 2 is a schematic view showing an example of a flue gas treatment system comprising a spray tower using hollow fiber membranes as packing as a main component, in the "spray tower using hollow fiber membranes as packing and a flue gas treatment system thereof". In the figure: (13) a hollow fiber membrane dust collector; (14) a spray tower using a hollow fiber membrane as a filler; (15) an ozone destructor; (16) an ozone supply system.
Detailed description of the invention
The structure and the working process of the invention are further explained in detail with the attached figure 1.
Firstly, the flue gas to be treated needs to be pure gas without dust because the bubble-free aeration is realized by the tube pass of the hollow fiber membrane, so that the flue gas dust needs to be thoroughly treated before the spray tower using the hollow fiber membrane as a filler, and the dust content of the flue gas dust with the particle size PM2.5 is reduced to below 20ug/m for casting. In fact, the trace-level dust remover designed and manufactured by the inventor can easily achieve the precision below 1ug/m and realize the industrialized long-term use of the high-yield Shaosheng smeltery 50000m and high-yield lead smoke dust removal device, thereby opening a way for implementing the invention.
The dust-removed flue gas passes through a dust-removed flue gas inlet (01), and ozone passes through an ozone inlet (02) and enters an ozone reactor (03) respectively; because the ozone reaction is very rapid, almost all NO in the flue gas is converted into soluble NO2, SO2 is also converted into soluble SO3 and the like through detection.
The mixed flue gas enters the inner hole of the membrane wire under the action of pressure. Because the membrane filaments are loaded with the catalyst, the mixed smoke body of the flue gas and the ozone is in close contact with the catalyst in the micropores of the membrane wall, and the flue gas is further oxidized.
The surface of the membrane silk is wetted by the absorption liquid. The absorption liquid is common oxidant such as sodium bicarbonate, sodium hydroxide, ammonium persulfate, hydrogen peroxide, sodium hypochlorite, ammonia water, and amine alcohol.
The smoke pressure is controlled, and bubble-free aeration is kept. The microbubbles separated from the membrane filaments meet with the absorption liquid on the surface of the membrane filaments, and are in close contact in a tiny space under the combined action of ozone and a catalyst to generate a large amount of free radicals, so that a strong oxidation reaction is generated, pollutants in the flue gas are thoroughly degraded, and the degraded substances are absorbed by the absorption liquid. The residual nitrogen, oxygen, residual ozone and the like are sent to an ozone destructor (15) through a purified gas outlet (10) for final catalytic treatment and are discharged out of a chimney.
The reaction absorption liquid renews the liquid film by gravity flow, and generates shearing force to release aeration bubbles on the surface of the membrane filaments.
The membrane modules of each layer of curtain are staggered, so that the contact uniformity of the membrane modules with gas and liquid can be improved. The lower part of each layer of curtain type membrane component is provided with a supporting uniform flow screen plate (05) for supporting membrane filaments, avoiding sagging and simultaneously uniformly distributing reaction absorption liquid. The supporting flow-homogenizing screen plate (05) is made of stainless steel or a mesh material with repeated coatings.
After the concentration of the reaction absorption liquid is saturated or the PH value reaches a set standard, the reaction absorption liquid is renewed and recycled by an absorption liquid recycling and renewing system (12).
Small-scale test bench experiment: carrying out air flow rate 0.6m plantation/h; the pure NO flow of the steel cylinder is 10 ml/min; the flow of the pure SO2 in the steel cylinder is 10 ml/min; carrying out ethanol concentration 0.6 g/m; the area of the membrane component is 0.07 square meter; the flow rate of the absorption liquid is 2L/min; the absorption liquid component was 5% aqueous sodium hydroxide solution. The experimental results are as follows: the SO2 removal rate is 100%, and the NOx removal rate is 98%.
The invention can be widely used in chemical engineering of liquid-gas reaction absorption, smoke treatment of large ship engines, waste incineration and petrochemical fuel combustion, VOC treatment, carbon dioxide capture and other occasions. Has the outstanding advantages of small volume, high efficiency, thorough treatment, resource recovery and the like.
Claims (3)
1. Spray tower and flue gas processing system with hollow fiber membrane as filler, its characterized in that: the hollow fiber membrane film wire is used as a filler in a filler spray tower, the surface of the hollow fiber membrane film wire is used as a liquid film loading surface, and a liquid film is formed on the surface of the membrane wire by reaction absorption liquid sent by a spray head; the hollow fiber membrane filaments are membrane filaments loaded with a catalyst; mixing the flue gas to be treated with ozone, and inputting the mixed flue gas into the hollow fiber membrane filaments through the tube pass; the pressure of the input gas is greater than the sum of the bubble point pressure of breaking through the hollow fiber membrane and the resistance of the liquid membrane.
2. The spray tower using the hollow fiber membrane as the filler and the smoke treatment system thereof according to claim 1, wherein: the upper part of the box body of the spray tower is provided with a purified air outlet and a spray head; a curtain type membrane component made of a plurality of layers of hollow fiber membranes is arranged below or on the side of the spray head; the curtain-type membrane assemblies are arranged in a longitudinally and transversely staggered mode respectively; a supporting uniform flow screen plate is arranged between each layer of membrane module; the membrane filaments adopted by the curtain-type membrane component are membrane filaments loaded with a catalyst; reaction absorption liquid at the lower part of the box body of the spray tower is pumped to the spray header through an absorption liquid circulating pump; the bottom of the reaction absorption liquid is connected with a reaction absorption liquid recovery and renewal system; an ozone reactor is arranged outside the box body of the spray tower; the flue gas to be treated enters an ozone reactor from a dust-removing flue gas inlet; ozone enters the ozone reactor from the ozone inlet; the air outlet end of the ozone reactor is connected with the air inlet ends of all the curtain-type membrane assemblies through pipelines.
3. The spray tower using the hollow fiber membrane as the filler and the smoke treatment system thereof according to claim 1, wherein: the flue gas treatment system is formed by sequentially connecting a hollow fiber film dust remover, a spray tower with a hollow fiber film as a filler, an ozone supply system and an ozone destructor; wherein, the flue gas supplied to the spray tower with the hollow fiber membrane as the filler by the hollow fiber membrane dust remover contains dust with the particle size of more than 2.5 microns and the dust content is lower than 20ug/m for carrying out the high-speed thin film cultivation; the ozone destructor is made using a catalyst comprising a manganese oxide material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110289946.4A CN112892182A (en) | 2021-03-18 | 2021-03-18 | Spray tower with hollow fiber membrane as filler and flue gas treatment system thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110289946.4A CN112892182A (en) | 2021-03-18 | 2021-03-18 | Spray tower with hollow fiber membrane as filler and flue gas treatment system thereof |
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| CN112892182A true CN112892182A (en) | 2021-06-04 |
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| CN202110289946.4A Withdrawn CN112892182A (en) | 2021-03-18 | 2021-03-18 | Spray tower with hollow fiber membrane as filler and flue gas treatment system thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113332855A (en) * | 2021-06-29 | 2021-09-03 | 西安热工研究院有限公司 | A pack absorption tower and carbon entrapment absorption system for organic amine carbon dioxide entrapment |
| CN113385032A (en) * | 2021-08-03 | 2021-09-14 | 广东风和洁净工程有限公司 | Four-stage flue gas purification treatment system |
| CN114225669A (en) * | 2022-02-25 | 2022-03-25 | 中国华能集团清洁能源技术研究院有限公司 | Absorption tower |
| CN115105944A (en) * | 2022-07-05 | 2022-09-27 | 广东风和洁净工程有限公司 | Hollow fiber membrane bed manganese desulfurization and denitrification device |
Citations (4)
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|---|---|---|---|---|
| CN103623680A (en) * | 2012-08-22 | 2014-03-12 | 长英夫 | Low temperature organic malodorous gas treating system |
| CN104437006A (en) * | 2014-10-28 | 2015-03-25 | 南京大学 | Membrane absorption device and method for purifying bio-methane |
| CN105642126A (en) * | 2016-01-04 | 2016-06-08 | 华东理工大学 | Modification method of polypropylene hollow fiber membrane and application of polypropylene hollow fiber membrane in mercury removal of waste gas |
| CN210097385U (en) * | 2019-01-02 | 2020-02-21 | 郭绍华 | Flue gas treatment system |
-
2021
- 2021-03-18 CN CN202110289946.4A patent/CN112892182A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103623680A (en) * | 2012-08-22 | 2014-03-12 | 长英夫 | Low temperature organic malodorous gas treating system |
| CN104437006A (en) * | 2014-10-28 | 2015-03-25 | 南京大学 | Membrane absorption device and method for purifying bio-methane |
| CN105642126A (en) * | 2016-01-04 | 2016-06-08 | 华东理工大学 | Modification method of polypropylene hollow fiber membrane and application of polypropylene hollow fiber membrane in mercury removal of waste gas |
| CN210097385U (en) * | 2019-01-02 | 2020-02-21 | 郭绍华 | Flue gas treatment system |
Non-Patent Citations (1)
| Title |
|---|
| 罗宏主编: "《中国地学通鉴 环境卷》", 31 March 2019, pages: 55 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113332855A (en) * | 2021-06-29 | 2021-09-03 | 西安热工研究院有限公司 | A pack absorption tower and carbon entrapment absorption system for organic amine carbon dioxide entrapment |
| CN113385032A (en) * | 2021-08-03 | 2021-09-14 | 广东风和洁净工程有限公司 | Four-stage flue gas purification treatment system |
| CN114225669A (en) * | 2022-02-25 | 2022-03-25 | 中国华能集团清洁能源技术研究院有限公司 | Absorption tower |
| CN115105944A (en) * | 2022-07-05 | 2022-09-27 | 广东风和洁净工程有限公司 | Hollow fiber membrane bed manganese desulfurization and denitrification device |
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