Gas treating process for selective H.sub.2 S removal

Details Gas treating process for selective H.sub.2 S removal Gas treating process for selective H.sub.2 S removal

1983-02-03

1984-11-20

Niebling, John F.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

423220, 423226, 423232, 55 73, C01B 1716

Patent

active

044838344

ABSTRACT:
A process is disclosed for treating carbon dioxide-containing gas streams, such as a natural gas, to selectively remove hydrogen sulfide. The process employs an absorption-stripping sequence in which hydrogen sulfide and carbon dioxide are removed from the feed gas. The net overhead vapor of the stripping column is compressed and dried and passed into a fractionation column. Relatively high purity hydrogen sulfide is withdrawn from the bottom of the fractionation column, and the net overhead vapor of the fractionation column is recycled back to the absorption zone.

REFERENCES:
patent: 3989811 (1976-11-01), Hill
patent: 4025322 (1977-05-01), Fisch

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