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1. 发明授权

US4834959A Process for selectively removing sulfur dioxide 失效
标题翻译：选择性除去二氧化硫的方法
公开(公告)号：US4834959A
公开(公告)日：1989-05-30
申请号：US905426
申请日：1986-09-10
申请人： Van Albert Kent , Larry H. Kirby , William R. Behr
发明人： Van Albert Kent , Larry H. Kirby , William R. Behr
IPC分类号： B01D53/50 , C01B17/60 , C01B17/62 , C01C1/22 , C01D5/14
CPC分类号： B01D53/501 , C01B17/60 , C01B17/62 , C01C1/22 , C01D5/14
摘要： Gas feed streams containing sulfur dioxide such as flue gas streams are first contacted with an aqueous solution of inorganic sulfites and bisulfites having a pH range from about 2 to about 6.5 to remove a minor amount of sulfur dioxide. The same gas stream is then contact with a second aqueous solution of sulfites and bisulfites having a pH range from about 7.0 to about 12.5. Alkali metal hydroxide or ammonium hydroxide solution is added to the liquid inlet of the second contactor and the solution of the second contactor is pumped to the liquid inlet of the first contactor.
摘要翻译：首先，将含有二氧化硫（如烟气）的气体进料流与pH范围为约2至约6.5的无机亚硫酸盐和亚硫酸氢盐的水溶液接触以除去少量的二氧化硫。然后将相同的气流与pH范围为约7.0至约12.5的亚硫酸盐和亚硫酸氢盐的第二水溶液接触。将碱金属氢氧化物或氢氧化铵溶液加入到第二接触器的液体入口中，并将第二接触器的溶液泵送到第一接触器的液体入口。

2. 发明授权

US4830838A Removal of hydrogen sulfide from fluid streams with minimum production of solids 失效
标题翻译：以最小的固体产量从流体流中除去硫化氢
公开(公告)号：US4830838A
公开(公告)日：1989-05-16
申请号：US265613
申请日：1988-11-01
申请人： Van A. Kent , William R. Behr , Larry H. Kirby
发明人： Van A. Kent , William R. Behr , Larry H. Kirby
IPC分类号： B01D53/52 , B01D53/14 , B01D53/77 , C01B17/16 , C01B17/60 , C01B17/62 , C01B32/50
CPC分类号： B01D53/1406 , B01D53/1468 , B01D53/1493 , C01B17/60 , C01B17/62 , Y02C10/06 , Y02P20/152
摘要： Fluid streams containing hydrogen sulfide from a steam tubine or from a sour gas stream are contacted with an aqueous solution of a polyvalent metal chelate and a bisulfite whereby the hydrogen sulfide is converted to free sulfur and then to soluble sulfur compounds. The metal chelate is reduced to a lower oxidation state metal chelate and reduced metal chelate is subsequently oxidized with air back to the higher oxidation state and reused. The bisulfite is formed by combustion of a portion of the fluid stream and subsequent absorption of the sulfur dioxide formed thereby in a two-stage countercurrent scrubber operating at conditions favorable for high bisulfite and low sulfite formation and selective away from carbon dioxide absorption.
摘要翻译：将含有来自蒸汽锭子或来自酸性气流的硫化氢的流体流与多价金属螯合物和亚硫酸氢盐的水溶液接触，由此将硫化氢转化为游离硫，然后转化为可溶性硫化合物。金属螯合物被还原为较低的氧化态金属螯合物，还原的金属螯合物随后被空气氧化回到更高的氧化态并重复使用。亚硫酸氢盐由一部分流体物流的燃烧形成，随后由此形成的二氧化硫吸收在两级逆流洗涤器中，在有利于高亚硫酸氢盐和低亚硫酸盐形成的条件下操作，并且选择性地远离二氧化碳吸收。

3. 发明授权

US4585630A Process for selectively removing hydrogen sulfide 失效
标题翻译：选择性除去硫化氢的方法
公开(公告)号：US4585630A
公开(公告)日：1986-04-29
申请号：US710722
申请日：1985-03-11
申请人： Van A. Kent , Roberto A. Abib , Larry H. Kirby
发明人： Van A. Kent , Roberto A. Abib , Larry H. Kirby
IPC分类号： B01D53/14 , C01B17/05
CPC分类号： B01D53/1493 , B01D53/1462 , B01D53/1468
摘要： Hydrogen sulfide is removed from gas streams containing it with or without carbon dioxide by contacting the gas feed stream with an aqueous liquid containing sulfide and bisulfide ions and having a pH in the range from 9 to 12 to remove a minor portion of the hydrogen sulfide and then removing the remainder with an aqueous liquid containing sulfide and bisulfide ions having a higher pH in the range from 11 to 13.5.
摘要翻译：通过使气体进料流与含有硫化物和二硫化物离子的水性液体接触并且pH在9至12的范围内以除去少量的硫化氢，硫化氢从含有或不含二氧化碳的气流中除去，然后用含有11至13.5范围内较高pH的硫化物和二硫化物离子的含水液体除去剩余物。

4. 发明授权

US5320816A Process for absorption of sulfur dioxide and nitric oxide from flue gas 失效
标题翻译：从烟道气中吸收二氧化硫和一氧化氮的方法
公开(公告)号：US5320816A
公开(公告)日：1994-06-14
申请号：US964323
申请日：1992-10-21
申请人： Susan S. Tsai , Stephen A. Bedell , Larry H. Kirby , Aubrey J. Rhymes, Jr. , Richard D. Varjian
发明人： Susan S. Tsai , Stephen A. Bedell , Larry H. Kirby , Aubrey J. Rhymes, Jr. , Richard D. Varjian
IPC分类号： B01D53/60 , B01D61/14 , B01D61/24 , B01D61/44 , B01D53/34
CPC分类号： B01D61/145 , B01D53/60 , B01D61/243 , B01D61/44
摘要： The simultaneous abatement of NO and SO.sub.2 in flue gas is provided by an absorption process and apparatus utilizing an absorbent composition comprising an aqueous solution of chelates and sulfite salts. Metal chelates oxidized to an inactive state are electrochemically reduced. In the electrochemical cell, nickel or stainless steel anode materials are stable and may be used in the place of platinum coated anode materials when the anolyte pH is maintained greater than 12. At these conditions, the anode is corrosion resistant with a long operating time between replacement. Ultrafiltration or Donnan dialysis may be used to separate the chelate sorbents from the waste salts to reduce the loss of expensive chelate sorbents. Alternatively, an anionic exchange membrane can be used to electrodialytically separate waste sulfur/nitrogen salts from the absorbent solution.
摘要翻译：通过吸收方法和使用包含螯合物和亚硫酸盐的水溶液的吸收剂组合物的装置来提供烟道气中的NO和SO 2的同时减少。氧化成无活性状态的金属螯合物电化学还原。在电化学电池中，当阳极电解液pH保持大于12时，镍或不锈钢阳极材料是稳定的，并且可以用于代替铂涂覆的阳极材料。在这些条件下，阳极是耐腐蚀的，具有长的操作时间替代。可以使用超滤或Donnan透析法将螯合吸附剂与废盐分离，以减少昂贵螯合吸附剂的损失。或者，阴离子交换膜可用于电离渗析从废吸收剂溶液中分离废硫/氮盐。

5. 发明授权

US4960576A H.sub.2 S abatement in geothermal steam during stacking operations 失效
标题翻译： H2S在堆放作业过程中减少地热蒸汽
公开(公告)号：US4960576A
公开(公告)日：1990-10-02
申请号：US359896
申请日：1989-06-01
申请人： Stephen A. Bedell , Charles A. Hammond , Larry H. Kirby
发明人： Stephen A. Bedell , Charles A. Hammond , Larry H. Kirby
IPC分类号： B01D53/14 , C01B17/05 , E21B43/34 , F03G7/04
CPC分类号： E21B43/34 , B01D53/1418 , B01D53/1462 , C01B17/05 , F03G7/04 , Y02E10/10 , Y02P20/152 , Y10S423/19
摘要： A process for abating hydrogen sulfide during geothermal steam stacking operations is disclosed. The geothermal steam to be stacked is introduced into a geothermal steam stacking line. Ferric chelating solution is injected into the stacking line in an amount effective to convert the hydrogen sulfide in the steam to sulfur. The hydrogen sulfide-abated steam and chelating solution is vented through a rock muffler and the chelating solution is optionally recovered from the muffler, regenerated and recirculated to the injection step.
摘要翻译：公开了一种在地热蒸汽堆叠操作中减缓硫化氢的方法。要堆放的地热蒸汽被引入地热蒸汽堆叠管线。将铁螯合溶液以有效将硫化氢在蒸汽中转化为硫的量注入堆叠管线。硫化氢消除的蒸汽和螯合溶液通过岩石消声器排出，螯合溶液任选地从消音器回收，再生并再循环到注射步骤。

6. 发明授权

US5433934A Method for simultaneous absorption of sulfur dioxide and nitric oxide from flue gas 失效
标题翻译：同时从烟气中吸收二氧化硫和一氧化氮的方法
公开(公告)号：US5433934A
公开(公告)日：1995-07-18
申请号：US179882
申请日：1994-01-11
申请人： Dane Chang , Stephen A. Bedell , Larry H. Kirby
发明人： Dane Chang , Stephen A. Bedell , Larry H. Kirby
IPC分类号： B01D53/60 , B01D53/74 , B01D53/50 , B01D53/56
CPC分类号： B01D53/60
摘要： The simultaneous abatement of NO and SO.sub.2 in flue gas is provided by an absorption process and apparatus utilizing an absorbent composition comprising an aqueous solution of chelates and sulfite salt for NO abatement and amine SO.sub.2 absorbents such as piperazinones, morpholinones, piperidines, piperazines, piperazinediones, hydantoins, triazinones, pyrimidinones, oxazolidones, etc. for SO.sub.2 abatement. SO.sub.2 is thermally stripped from the spent absorbent and recovered. Metal chelates oxidized to an inactive state as a side-reaction are electrochemically reduced. An anionic exchange membrane in the electrochemical cell regenerates heat stable amine salt byproducts to be converted back to useable amine sorbent, and facilitates removal from the absorbent solution of other waste salts.
摘要翻译：废气中NO和SO2的同时减少是通过吸收方法和装置来提供的，所述吸收方法和装置使用包含螯合物水溶液和亚硫酸盐用于NO消除的吸收剂组合物，以及胺SO 2吸收剂如哌嗪酮，吗啉酮，哌啶，哌嗪，哌嗪类，乙内酰脲，三嗪酮，嘧啶酮，恶唑烷酮等，用于SO2消除。 SO2从废吸收剂中热剥离并回收。氧化成非活性状态的金属螯合物作为副反应被电化学还原。电化学电池中的阴离子交换膜再生热稳定的胺盐副产物以转化回可用的胺吸附剂，并且有助于从其它废盐的吸收剂溶液中除去。

7. 发明授权

US4960575A Removal of hydrogen sulfide with on site generated sulfite from geothermal steam 失效
标题翻译：从地热蒸汽中除去硫化氢，产生亚硫酸盐
公开(公告)号：US4960575A
公开(公告)日：1990-10-02
申请号：US359533
申请日：1989-06-01
申请人： Stephen A. Bedell , Larry H. Kirby
发明人： Stephen A. Bedell , Larry H. Kirby
IPC分类号： B01D53/52 , B01D53/14 , B01D53/77 , C01B17/50 , C01B17/62 , C01B17/64 , E21B43/34 , F03G7/04
CPC分类号： E21B43/34 , B01D53/52 , F03G7/04 , Y02C10/06 , Y02E10/10 , Y10S423/19
摘要： Geothermal steam is condensed with a sulfite solution to abate hydrogen sulfide. A portion of the hydrogen sulfide is converted in the condensation in the presence of soluble cationic polymeric catalysts to soluble sulfur compounds while avoiding elemental sulfur and carbonate formation. The remainder of the hydrogen sulfide is incinerated and the sulfur dioxide in the incinerator effluent is absorbed in an alkaline solution to form the sulfites for the geothermal steam condensation. By maintaining stoichiometric ratios, the hydrogen sulfide is substantially converted to soluble thiosulfate without the use of chelates, peroxides or makeup sulfites.
摘要翻译：地热蒸汽与亚硫酸盐溶液冷凝以消除硫化氢。一部分硫化氢在可溶性阳离子聚合物催化剂存在下转化为可溶性硫化合物，同时避免元素硫和碳酸盐形成。将其余的硫化氢焚烧，焚化炉流出物中的二氧化硫被吸收在碱性溶液中，形成用于地热蒸汽冷凝的亚硫酸盐。通过保持化学计量比，硫化氢基本上转化为可溶性硫代硫酸盐，而不使用螯合物，过氧化物或亚硫酸盐化妆品。

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