公开(公告)号：US5622681A

公开(公告)日：1997-04-22

申请号：US513165

申请日：1995-08-09

Applicant: Jeffrey G. Grierson ,  Kirby T. Rapstein

Inventor： Jeffrey G. Grierson ,  Kirby T. Rapstein

IPC: B01D53/14 ,  B01D61/24 ,  B01D53/50 ,  B01D53/52 ,  B01D53/62

CPC classification number: B01D61/243 ,  B01D53/1425 ,  B01D53/1493

Abstract: There is disclosed an organic amine scrubbing process for acid gas abatement of gas streams. The process comprises Donnan dialysis of an absorbent solution to separate and convert organic amine heat stable salts back to free amine absorbent using an anion exchange or neutral membrane. The organic amine absorbent may be an alkanolamine, a substituted or unsubstituted 5-7 member heterocyclic amine or any organic amine suitable for acid gas scrubbing. There is also disclosed a dialysis cell comprising a two compartment cell separated by a membrane. The cell includes a charge of an organic amine high in the organic amine heat stable salt concentration in one compartment and a charge of a base solution in the other compartment. Also disclosed is a process for abating acid gases wherein the organic amine absorbent is regenerated by Donnan dialysis, and an apparatus for effecting the regeneration.

Abstract translation: 公开了一种用于气体消除气流的有机胺洗涤方法。 该方法包括使用阴离子交换或中性膜将吸收剂溶液的Donnan透析分离并将有机胺热稳定盐转化回游离胺吸收剂。 有机胺吸收剂可以是链烷醇胺，取代或未取代的5-7元杂环胺或适用于酸性气体洗涤的任何有机胺。 还公开了一种透析池，其包括由隔膜隔开的两室细胞。 电池包括在一个隔室中有机胺热稳定盐浓度高的有机胺的电荷和另一隔室中的碱溶液的电荷。 还公开了一种减轻酸性气体的方法，其中有机胺吸收剂由Donnan透析再生，以及用于进行再生的装置。

公开(公告)号：US4291001A

公开(公告)日：1981-09-22

申请号：US106961

申请日：1979-12-26

Applicant: Wendy J. Repsher ,  Kirby T. Rapstein

Inventor： Wendy J. Repsher ,  Kirby T. Rapstein

IPC: B01J39/00 ,  B01J41/04 ,  B01J41/08 ,  B01J47/00 ,  C01D3/14 ,  C01D15/00 ,  C01D15/02 ,  C22B26/12

CPC classification number: C01D15/04 ,  B01J41/046 ,  B01J41/08 ,  B01J47/006 ,  C01D3/145 ,  C22B26/12 ,  C22B3/42 ,  Y02P10/234

Abstract: Improvements are made in the process wherein Li.sup.+ values are recovered from dilute aqueous solution by the use of an anion exchange resin composite containing crystalline LiX.2Al(OH).sub.3, where X is halide. The improvements derive from enriching the Li.sup.+ containing solution with a non-competing metal salt (e.g., NaCl) prior to the Li.sup.+ removal, thereby achieving higher Li.sup.+ loading of the resin composite and obtaining more concentrated eluates.

Abstract translation: 在通过使用含有结晶LiX.2Al（OH）3的阴离子交换树脂复合物（其中X为卤化物）从稀水溶液中回收Li +值的方法进行改进。 这些改进源于在Li +去除之前用非竞争性金属盐（例如NaCl）富集含Li +溶液，从而实现树脂复合材料的更高的Li +负载并获得更多的浓缩洗脱液。