CN108636065B - Exhaust gas desulfurization and deodorization device - Google Patents
Exhaust gas desulfurization and deodorization device Download PDFInfo
- Publication number
- CN108636065B CN108636065B CN201810688459.3A CN201810688459A CN108636065B CN 108636065 B CN108636065 B CN 108636065B CN 201810688459 A CN201810688459 A CN 201810688459A CN 108636065 B CN108636065 B CN 108636065B
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- chamber
- desulfurization
- tower
- exhaust gas
- absorption
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 57
- 230000023556 desulfurization Effects 0.000 title claims abstract description 57
- 238000004332 deodorization Methods 0.000 title claims abstract description 13
- 239000007789 gas Substances 0.000 claims abstract description 36
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims abstract description 31
- 239000002912 waste gas Substances 0.000 claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 25
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000005194 fractionation Methods 0.000 claims abstract description 13
- 238000010521 absorption reaction Methods 0.000 claims description 31
- 238000004090 dissolution Methods 0.000 claims description 19
- 238000001035 drying Methods 0.000 claims description 10
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 7
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 239000002274 desiccant Substances 0.000 claims description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 2
- 239000003546 flue gas Substances 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 9
- 239000013049 sediment Substances 0.000 description 7
- 230000003009 desulfurizing effect Effects 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000012824 chemical production Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 206010023848 Laryngeal pain Diseases 0.000 description 1
- 206010047700 Vomiting Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 231100000570 acute poisoning Toxicity 0.000 description 1
- BIGPRXCJEDHCLP-UHFFFAOYSA-N ammonium bisulfate Chemical compound [NH4+].OS([O-])(=O)=O BIGPRXCJEDHCLP-UHFFFAOYSA-N 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036952 cancer formation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 210000002249 digestive system Anatomy 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 208000002173 dizziness Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 125000001997 phenyl group Chemical class [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 210000004994 reproductive system Anatomy 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- 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
- B01D53/14—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 by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- 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
- B01D53/14—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 by absorption
- B01D53/1456—Removing acid components
- B01D53/1468—Removing hydrogen sulfide
-
- 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
- B01D53/14—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 by absorption
- B01D53/1487—Removing organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2247/00—Details relating to the separation of dispersed particles from gases, air or vapours by liquid as separating agent
- B01D2247/10—Means for removing the washing fluid dispersed in the gas or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/306—Organic sulfur compounds, e.g. mercaptans
Abstract
The invention discloses an exhaust gas desulfurization and deodorization device, which comprises a dissolving tower for preliminarily absorbing hydrogen sulfide and organic sulfide in exhaust gas and a desulfurization group for purifying the exhaust gas of the dissolving tower, wherein light oil fractionation liquid can be sprayed in the dissolving tower for absorbing the hydrogen sulfide and the organic sulfide, and the desulfurization group is provided with a demisting section communicated with the dissolving tower, a primary desulfurization section for purifying the exhaust gas of the demisting section and a secondary desulfurization section for purifying the exhaust gas of the primary desulfurization section. The device can well utilize the hydrogen sulfide and organic sulfide in the waste gas, is convenient for purifying the hydrogen sulfide in the later period, and has simple structure, convenient operation and high purifying efficiency.
Description
Technical Field
The invention relates to the technical field of chemical production equipment, in particular to an exhaust gas desulfurization and deodorization device.
Background
In the process of processing crude oil, some facilities inevitably discharge a large amount of malodorous pollution waste gas, in particular to sulfur-containing sewage storage tanks, semi-finished oil storage tanks, dirty oil storage tanks, thiol-removal tail gas and other facilities, and malodorous pollutants discharged by the facilities contain components such as hydrogen sulfide, organic sulfide, benzene series and other volatile organic matters. The long-term movement of staff in the environment polluted by the substances can cause diseases of respiratory system, digestive system, reproductive system and the like, and can also cause pathological changes and even cancerogenesis of organisms; when the short-term pollution is serious, the acute poisoning symptoms such as dizziness, laryngeal pain, nausea and vomiting can be obvious.
The current purification facilities generally adopt a flue gas desulfurization method to remove sulfur and deodorize at the same time, and the industry adopts a dry method or a wet method in most cases, and the greatest advantage of the dry desulfurization is that no wastewater and waste acid are discharged in treatment, so that secondary pollution is reduced; the disadvantage is low desulfurization efficiency and huge equipment; the wet desulfurization method has the advantages of relatively simple equipment, easy operation and high desulfurization efficiency, but has serious corrosiveness to the equipment. Because chemical production is continuous production, equipment is relatively large, equipment cost is relatively high, and if corroded parts are frequently replaced, the production is very influenced, and meanwhile, the whole purification efficiency is also influenced.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the waste gas desulfurization and deodorization device which is simple to operate, high in desulfurization efficiency, low in purification cost and capable of effectively and continuously desulfurizing.
The technical scheme adopted for solving the technical problems is as follows:
the utility model provides a waste gas desulfurization deodorizing device, includes the desulfurizing group that is arranged in preliminary absorption waste gas hydrogen sulfide and organic sulfide's solution tower and is used for purifying solution tower exhaust gas, can spray the fractional liquid of light oil in the solution tower and be used for absorbing hydrogen sulfide and organic sulfide, the desulfurizing group be equipped with the defogging section of solution tower intercommunication, be used for purifying defogging section exhaust gas's first desulfurization section and be used for purifying the secondary desulfurization section of once desulfurization section exhaust gas.
As the improvement of the technical scheme, the primary desulfurization section comprises an absorption tank with alkaline absorption liquid inside, a pressurizing chamber, an absorption chamber and a swirl chamber are arranged in the absorption tank, the pressurizing chamber is arranged at the lower part of the swirl chamber, the pressurizing chamber and the swirl chamber are respectively connected with the absorption chamber, the upper side wall of the pressurizing chamber is connected with the lower part of the absorption chamber through a first pressure valve, and the lower part of the swirl chamber is connected with the upper part of the absorption chamber through a second pressure valve.
As an improvement of the technical scheme, a drain valve for discharging sediment is arranged at the lower part of the pressurizing chamber, and the pressurizing chamber is connected with the output end of the dissolving tower through a pressurizing pump.
As an improvement of the technical scheme, a drain valve is also arranged at the lower part of the absorption chamber.
As an improvement of the technical scheme, a spiral ascending guide plate is arranged in the cyclone chamber, and a guide channel is formed by the guide plate and the side wall of the cyclone chamber.
As an improvement of the technical scheme, the pressurizing chamber, the absorbing chamber and the cyclone chamber are all filled with alkaline absorbing liquid, and the alkaline absorbing liquid is lime water.
As an improvement of the technical scheme, the secondary desulfurization section comprises a spraying chamber for spraying ammonia water and a drying zone for drying the purified gas, and the drying zone is filled with a drying agent.
As an improvement of the technical scheme, the dissolution tower is connected with an external fractionating tower, and the external fractionating tower can spray light oil fractionation liquid into the dissolution tower.
As an improvement of the technical scheme, the input end of the dissolution tower is connected with a condenser for cooling the waste gas.
As an improvement of the technical scheme, the output end of the condenser is provided with a supercharger.
The invention has the beneficial effects that:
the waste gas desulfurization and deodorization device utilizes the light oil fractionation liquid in the dissolution tower to preliminarily absorb hydrogen sulfide and organic sulfide in the waste gas, and the light oil fractionation liquid can be directly hydrotreated and reused after absorbing the hydrogen sulfide and the organic sulfide in the waste gas; the desulfurization group is used for removing hydrogen sulfide in the residual gas again at the back of the dissolution tower, the demisting section can be used for effectively solidifying liquid in the waste gas, the primary desulfurization section is matched with the secondary desulfurization section for completely removing hydrogen sulfide and organic sulfide in the waste gas, the whole process is convenient and simple, the dosage of the hydrogen sulfide and the organic sulfide to the alkaline absorbent in the wet desulfurization process can be greatly reduced by adopting the mode, the concentration of products is reduced, and the corrosion degree to equipment is reduced; the device can well utilize the hydrogen sulfide and organic sulfide in the waste gas, is convenient for purifying the hydrogen sulfide in the later period, and has simple structure, convenient operation and high purifying efficiency.
Drawings
The invention will be further described with reference to the accompanying drawings and specific examples, in which:
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of a primary desulfurization section in an embodiment of the present invention;
FIG. 3 is a schematic structural view of a secondary desulfurization section according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a dissolution tower in an embodiment of the present invention.
Detailed Description
Referring to fig. 1 to 4, an exhaust gas desulfurization and deodorization apparatus of the present invention includes a dissolution tower 1 for primarily absorbing hydrogen sulfide and organic sulfide in exhaust gas, and a desulfurization group 2 for purifying exhaust gas of the dissolution tower 1, wherein a light oil fractionation liquid can be sprayed in the dissolution tower 1 for absorbing hydrogen sulfide and organic sulfide, and the desulfurization group 2 is provided with a demisting section 21 communicating with the dissolution tower 1, a primary desulfurization section 22 for purifying exhaust gas of the demisting section 21, and a secondary desulfurization section 23 for purifying exhaust gas of the primary desulfurization section 22.
Referring to fig. 1 and 4, the dissolution tower 1 is connected to an external fractionation tower, which can spray light oil fractionation liquid into the dissolution tower 1. In this embodiment, the light oil fractionation liquid is gas oil, and after hydrogen sulfide and organic sulfide in the exhaust gas are absorbed by the gas oil, pure hydrogen sulfide gas can be obtained by only hydrotreating the gas oil, and the pure hydrogen sulfide gas can be used as other chemical raw materials. The input end of the dissolution tower 1 is connected with a condenser 3 for cooling waste gas, and the waste gas exhausted by the whole chemical system can be cooled by utilizing the condenser 3, so that the light oil fractionation liquid is convenient for absorbing hydrogen sulfide and organic sulfide. The output end of the condenser 3 is provided with a supercharger 4, so that the exhaust gas inlet and outlet amount can be conveniently controlled.
Referring to fig. 1 and 2, the primary desulfurization section 22 includes an absorption tank with an alkaline absorption liquid therein, a pressurizing chamber 221, an absorption chamber 222 and a swirl chamber 223 are disposed in the absorption tank, the pressurizing chamber 221 is disposed at a lower portion of the swirl chamber 223, the pressurizing chamber 221 and the swirl chamber 223 are respectively connected with the absorption chamber 222, the pressurizing chamber 221, the absorption chamber 222 and the swirl chamber 223 are all filled with the alkaline absorption liquid, the alkaline absorption liquid is lime water, the lime water has a simple raw material source, and a product generated by the lime water and hydrogen sulfide can be reused.
The pressurizing chamber 221 is connected with the output end of the dissolution tower 1 through a pressurizing pump, the pressurizing pump can convey compressed waste gas to the pressurizing chamber 221, the upper side wall of the pressurizing chamber 221 is connected with the lower part of the absorption chamber 222 through a first pressure valve 224, and the lower part of the swirling chamber 223 is connected with the upper part of the absorption chamber 222 through a second pressure valve 225. Wherein the preset pressure of the first pressure valve 224 is greater than the preset pressure of the second pressure valve 225, the design is such that the exhaust gas in the plenum 221 can effectively react with the alkaline absorption liquid therein to be absorbed. Because lime water reacts with the waste gas to easily generate sediment, a drain valve for discharging the sediment is arranged at the lower part of the pressurizing chamber 221, and the drain valve can timely discharge the sediment to prevent the sediment from adhering in the primary desulfurization section 22, thereby blocking a channel and corroding equipment. Secondly, after the compressed gas enters the absorption chamber 222 after entering the first pressure valve 224 of the internal gas cylinder of the pressurizing chamber 221, a large number of bubbles can be generated due to the pressure reduction, and the large number of bubbles can fully react with lime water, so that the reaction efficiency is improved. The lower part of the absorption chamber 222 is also provided with a drain valve, which is convenient for removing sediment. The spiral rising guide plate 226 is arranged in the cyclone chamber 223, the guide plate 226 and the side wall of the cyclone chamber 223 form a guide channel, and after the waste gas comes out from the second pressure valve 225, the waste gas is restrained by the guide channel in the cyclone chamber 223, so that the waste gas can be desulfurized to the greatest extent when finally leaving the primary desulfurization section 22, and due to the structural design of the absorption chamber 222 and the pressurizing chamber 221, the sediment blocking space in the primary desulfurization section 22 can be effectively reduced.
Referring to fig. 1 and 3, the secondary desulfurization section 23 includes a spray chamber 231 for spraying ammonia water and a drying zone 232 for drying the purified gas, and the drying zone 232 is filled with a drying agent. The ammonia water is utilized for sand blasting, so that the residual hydrogen sulfide in the waste gas can be removed completely to the greatest extent, and ammonia sulfate can be generated. The drying area 232 can effectively prevent the gas with ammonia water from being discharged outside to cause secondary pollution.
The waste gas desulfurization and deodorization device utilizes the light oil fractionation liquid in the dissolution tower 1 to preliminarily absorb hydrogen sulfide and organic sulfide in waste gas, and the light oil fractionation liquid can be directly hydrotreated and reused after absorbing the hydrogen sulfide and the organic sulfide in the waste gas; the desulfurization group 2 is used for removing hydrogen sulfide in the residual gas again at the back of the dissolution tower 1, the demisting section 21 can be used for effectively solidifying liquid in the waste gas, the primary desulfurization section 22 is matched with the secondary desulfurization section 23 for completely removing hydrogen sulfide and organic sulfide in the waste gas, the whole process is convenient and simple, the dosage of the hydrogen sulfide and the organic sulfide to an alkaline absorbent in the wet desulfurization process can be greatly reduced by adopting the mode, the concentration of a product is reduced, and meanwhile, the corrosion degree to equipment is reduced; the device can well utilize the hydrogen sulfide and organic sulfide in the waste gas, is convenient for purifying the hydrogen sulfide in the later period, and has simple structure, convenient operation and high purifying efficiency.
The present invention is not limited to the above embodiments, but is intended to be within the scope of the present invention as long as the technical effects of the present invention can be achieved by any same or similar means.
Claims (5)
1. An exhaust gas desulfurization and deodorization device is characterized in that: the device comprises a dissolving tower (1) for preliminarily absorbing hydrogen sulfide and organic sulfide in waste gas and a desulfurization group (2) for purifying the waste gas discharged from the dissolving tower (1), wherein light oil fractionation liquid can be sprayed in the dissolving tower (1) for absorbing the hydrogen sulfide and the organic sulfide, the desulfurization group (2) is provided with a demisting section (21) communicated with the dissolving tower (1), a primary desulfurization section (22) for purifying the waste gas discharged from the demisting section (21) and a secondary desulfurization section (23) for purifying the waste gas discharged from the primary desulfurization section (22), the primary desulfurization section (22) comprises an absorption tank internally provided with alkaline absorption liquid, a pressurizing chamber (221), an absorption chamber (222) and a swirl chamber (223) are arranged in the absorption tank, the pressurizing chamber (221) is arranged at the lower part of the swirl chamber (223), the pressurizing chamber (221) and the swirl chamber (223) are respectively connected with the absorption chamber (222), the upper side wall of the pressurizing chamber (221) is connected with the lower part of the absorption chamber (222) through a first pressure valve (224), the lower part of the pressurizing chamber (221) is connected with the lower part of the absorption chamber (222) through a second pressure valve (221), the pressurizing chamber (221) is connected with the upper end of the absorption chamber (222) through the upper pressure valve (221), the spiral lifting guide plate (226) is arranged in the spiral chamber (223), the guide plate (226) and the side wall of the spiral chamber (223) form a guide channel, the pressurizing chamber (221), the absorbing chamber (222) and the spiral chamber (223) are all filled with alkaline absorbing liquid, and the alkaline absorbing liquid is lime water.
2. An exhaust gas desulfurization and deodorization device according to claim 1, characterized in that: the secondary desulfurization section (23) comprises a spraying chamber (231) for spraying ammonia water and a drying area (232) for drying purified gas, and the drying area (232) is filled with a drying agent.
3. An exhaust gas desulfurization and deodorization device according to claim 1, characterized in that: the dissolution tower (1) is connected with an external fractionating tower, and the external fractionating tower can spray light oil fractionation liquid into the dissolution tower (1).
4. A flue gas desulfurization and deodorization apparatus according to claim 1 or 3, characterized in that: the input end of the dissolution tower (1) is connected with a condenser (3) for cooling waste gas.
5. An exhaust gas desulfurization and deodorization device according to claim 4, characterized in that: the output end of the condenser (3) is provided with a supercharger (4).
Priority Applications (1)
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CN201810688459.3A CN108636065B (en) | 2018-06-28 | 2018-06-28 | Exhaust gas desulfurization and deodorization device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201810688459.3A CN108636065B (en) | 2018-06-28 | 2018-06-28 | Exhaust gas desulfurization and deodorization device |
Publications (2)
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CN108636065A CN108636065A (en) | 2018-10-12 |
CN108636065B true CN108636065B (en) | 2023-11-14 |
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CN201810688459.3A Active CN108636065B (en) | 2018-06-28 | 2018-06-28 | Exhaust gas desulfurization and deodorization device |
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WO2016058141A1 (en) * | 2014-10-15 | 2016-04-21 | 北京中科净原环保科技有限公司 | Method and device for dedusting and desulphurizing flue gas |
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2018
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US4483834A (en) * | 1983-02-03 | 1984-11-20 | Uop Inc. | Gas treating process for selective H2 S removal |
JPH06285326A (en) * | 1993-04-05 | 1994-10-11 | Chiyoda Corp | Method and device for flue gas desulfurization |
EP0878610A1 (en) * | 1997-05-14 | 1998-11-18 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Exhaust gas purifying apparatus |
JP2000210533A (en) * | 1999-01-22 | 2000-08-02 | Nkk Corp | Flue gas desulfurizer |
JP2002079051A (en) * | 2000-09-08 | 2002-03-19 | Kurita Water Ind Ltd | Method for deodorizing hydrogen sulfide containing gas |
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