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1.发明授权
公开(公告)号：US4872996A
公开(公告)日：1989-10-10
申请号：US148809
申请日：1988-01-27
IPC分类号： C02F5/14 , C23F11/08 , C23F11/167
CPC分类号： C23F11/1676 , C02F5/14 , C23F11/08
摘要： A process for inhibiting the deposition of manganese in water systems by adding to the water a sufficient amount of an organic aminophosphonic acid to inhibit corrosion and scale resulting from undesirable manganese deposition.
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公开(公告)号：US5491259A
公开(公告)日：1996-02-13
申请号：US305111
申请日：1994-09-13
IPC分类号： C07C227/18 , C07C227/40 , C07C229/00
CPC分类号： C07C227/40 , C07C227/18
摘要： A method for producing an aqueous solution of an aminocarboxylic acid from an aqueous solution of an alkali metal salt of the aminocarboxylic acid is disclosed. The first step of the method is to adjust the pH of the aqueous solution of the alkali metal salt of the aminocarboxylic acid to between about 1.0 and about 3.0. This is done by adding a monovalent inorganic acid to the aqueous solution of the alkali metal salt of the aminocarboxylic acid to form an aqueous feed solution containing protonated aminocarboxylic acid and an inorganic alkali salt having an inorganic anion and an alkali metal cation. The second step of the method is to pass the aqueous feed solution through at least one membrane using a diafiltration process to separate the aqueous feed solution into an aqueous permeate solution, containing the alkali metal cation, and an aqueous retentate solution containing the aminocarboxylic acid.
摘要翻译： 公开了一种由氨基羧酸的碱金属盐的水溶液制备氨基羧酸的水溶液的方法。 该方法的第一步是将氨基羧酸的碱金属盐的水溶液的pH调节至约1.0至约3.0。 这是通过向氨基羧酸的碱金属盐的水溶液中加入一价无机酸形成含有质子化氨基羧酸的水性进料溶液和具有无机阴离子和碱金属阳离子的无机碱金属盐来进行的。 该方法的第二步是使用渗滤方法将含水进料溶液通过至少一个膜，以将含水进料溶液分离成含有碱金属阳离子的含水渗透液和含有氨基羧酸的含水滞留物溶液。
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3.发明授权Dialysis separation of heat stable organic amine salts in an acid gas absorption process 失效酸性气体吸收过程中热稳定性有机胺盐的透析分离
公开(公告)号：US5622681A
公开(公告)日：1997-04-22
申请号：US513165
申请日：1995-08-09
CPC分类号： B01D61/243 , B01D53/1425 , B01D53/1493
摘要： 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.
摘要翻译： 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。
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4.发明授权Corrosion inhibition of metals in water systems using aminophosphonic acid derivatives in combination with manganese 失效使用氨基膦酸衍生物与锰组合的水体系中金属的腐蚀抑制
公开(公告)号：US4640818A
公开(公告)日：1987-02-03
申请号：US744190
申请日：1985-06-13
IPC分类号： C23F11/167 , C23F11/08 , C23F11/173 , C23F11/18 , C09K3/00 , C23F11/16
CPC分类号： C23F11/08
摘要： The invention is an improved process for inhibiting corrosion of metals in water conducting systems. It comprises employing in combination a compound of manganese together with organic aminoalkylenephosphonic acid derivatives to the water in such systems. These amine derivative compounds may also contain other functional groups, e.g., carboxylates, quaternary amines, hydroxyalkyl groups and the like.
摘要翻译： 本发明是一种用于抑制导水系统中金属腐蚀的改进方法。 它包括将锰化合物与有机氨基亚烷基膦酸衍生物组合使用在这种体系中的水中。 这些胺衍生物化合物还可以含有其它官能团，例如羧酸盐，季胺，羟烷基等。
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