Process for selectively removing hydrogen sulfide

Details Process for selectively removing hydrogen sulfide Process for selectively removing hydrogen sulfide

1985-03-11

1986-04-29

Doll, John

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

423220, C01B 1705

Patent

active

045856303

ABSTRACT:
Hydrogen sulfide is removed from gas streams containing it with or without carbon dioxide by contacting the gas feed stream with an aqueous liquid containing sulfide and bisulfide ions and having a pH in the range from 9 to 12 to remove a minor portion of the hydrogen sulfide and then removing the remainder with an aqueous liquid containing sulfide and bisulfide ions having a higher pH in the range from 11 to 13.5.

REFERENCES:
patent: 2477314 (1949-07-01), Scharmann
patent: 2662000 (1953-12-01), Maschwitz
patent: 2747962 (1956-05-01), Heitz et al.
patent: 2761755 (1956-09-01), Brown
patent: 2878099 (1959-03-01), Breuing et al.
patent: 3556721 (1971-01-01), Radusch
patent: 4113837 (1978-09-01), Kendall et al.
patent: 4336233 (1982-06-01), Appl et al.
patent: 4395385 (1983-07-01), Welsh
patent: 4477420 (1984-10-01), Bauer et al.
Hohlfield, "Selective Adsorption of H.sub.2 S from Sour Gas", J. Petr. Tech., Jun. 1980, pp. 1083-1089.

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