Removal of CO.sub.2 and H.sub.2 S from natural gases

Details Removal of CO.sub.2 and H.sub.2 S from natural gases Removal of CO.sub.2 and H.sub.2 S from natural gases

1983-09-30

1985-08-27

Thomas, Earl C.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

423229, B01D 5334

Patent

active

045377537

ABSTRACT:
CO.sub.2 and, where relevant, H.sub.2 S are removed from natural gases which contain CO.sub.2 and may or may not contain H.sub.2 S by a process in which the said natural gases are treated, in an absorption stage at from 40.degree. to 100.degree. C., with an aqueous absorption liquid containing from 20 to 70% by weight of methyldiethanolamine, the treated natural gases are taken off at the top of the absorption stage, the aqueous absorption liquid laden with CO.sub.2 and, where relevant, H.sub.2 S is taken off at the bottom of the absorption stage and then regenerated in one or more flash stages, and the regenerated absorption liquid is recycled to the absorption stage.

REFERENCES:
patent: 2477314 (1949-07-01), Scharmann
patent: 2860030 (1958-11-01), Goldtrap et al.
patent: 3622267 (1971-11-01), Bartholome et al.
patent: 4336233 (1982-06-01), Appl et al.

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