Removal of acid gases from a gas mixture

Details Removal of acid gases from a gas mixture Removal of acid gases from a gas mixture

1986-12-15

1987-12-22

Nozick, Bernard

Gas separation

Means within gas stream for conducting concentrate to collector

55 49, 55 68, 55 73, 423228, B01D 1900

Patent

active

047144807

ABSTRACT:
Process for selectively removing H.sub.2 S from a gas mixture including H.sub.2 S and CO.sub.2 comprising contacting the gas mixture in a first contacting zone (1) with lean absorbent to obtain loaded absorbent, heating in heat exchanger (15) loaded absorbent, flashing in separating vessel (5) the heated loaded absorbent to obtain a partly purified absorbent and a CO.sub.2 -rich gas mixture, contacting the CO.sub.2 -rich gas mixture with a lean absorbent in second contacting zone (7) to obtain H.sub.2 S-loaded absorbent, adding the H.sub.2 S-loaded absorbent to the loaded absorbent before heating, and regenerating the partly purified absorbent in a regenerating zone (9) to obtain lean absorbent and H.sub.2 S-rich gas.

REFERENCES:
patent: 2860030 (1958-11-01), Goldtrap
patent: 3630666 (1971-12-01), Kunkel
patent: 4397660 (1983-08-01), Pas Tornstra
patent: 4407784 (1983-10-01), Blanc et al.

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