Non-precipitating regulation of ammonia content in sour gas solv

Details Non-precipitating regulation of ammonia content in sour gas solv Non-precipitating regulation of ammonia content in sour gas solv

1983-12-21

1985-05-07

Thomas, Earl C.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

423226, 423234, 423236, 423238, 423245, 55 68, B01D 5334

Patent

active

045157600

ABSTRACT:
The NH.sub.3 content is regulated in methanol used in a process for scrubbing out sour gases from gaseous mixtures and/or for preventing ice formation prior to the scrubbing step. The methanol is freed, after the scrubbing step, respectively of absorbed gaseous components and/or water, and reused in the cycle as scrubbing liquid and/or for preventing ice formation. A strong acid is added to the methanol from water-soluble ammonium salts. Thereby, dissolved salts are formed which are removed together with water. Deleterious trace acids are also removed by an analogous treatment with a basic compound. The acid/base treatments are conducted in succession.

REFERENCES:
patent: 4155988 (1979-05-01), Karwat

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