Physical solvent for gas sweetening

Details Physical solvent for gas sweetening Physical solvent for gas sweetening

1984-01-27

1984-11-27

Hart, Charles

Gas separation

Means within gas stream for conducting concentrate to collector

55 73, 423228, B01D 5314

Patent

active

044849346

ABSTRACT:
This invention relates to a novel solvent, N-2-methoxyethyl-2-pyrrolidone, that can be used in two ways. First, in the pure or undiluted form, it absorbs hydrogen sulfide and other sulfurous gases selectively and simultaneously dries the gas. Second, when mixed with an alkanolamine and water, it is a superior absorbent of mercaptans, sulfides, and disulfides, and removes acid gases. The chemical structure of N-2-methoxyethyl-2-pyrrolidone is shown below. ##STR1##

REFERENCES:
patent: 3377340 (1968-04-01), Hartwimmer et al.
patent: 3656275 (1972-04-01), Hunter
patent: 3719749 (1973-03-01), Smith et al.
patent: 3738086 (1973-06-01), Bellisio et al.
patent: 3745746 (1973-07-01), Psyvas et al.

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