Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1990-05-03
1992-02-04
Chiesa, Richard L.
Gas separation
Means within gas stream for conducting concentrate to collector
55 53, 55195, 55196, 423574R, B01D 1900
Patent
active
050856758
ABSTRACT:
A scrubbing solution boiling above 100.degree. C. under atmospheric pressure is used for removing H.sub.2 S and CO.sub.2 from a gas stream at a temperature from 5.degree. to 70.degree. C. The solution is thus laden with at least CO.sub.2 and H.sub.2 S. For regeneration, the laden scrubbing solution under a pressure of at least 2 bars and at a temperature of at least 60.degree. C. is supplied to an expansion zone and is expanded therein. A flashed-off gas which is rich in H.sub.2 S is withdrawn from the expansion zone. The scrubbing solution from the expansion zone is subjected to a hot regeneration, by which the scrubbing solution at a temperature below its boiling temperature is stripped with an inert gas so that its residual loading is substantially removed. Mixed gases which contain inert gas are withdrawn from the hot regeneration and are contacted with scrubbing solution.
REFERENCES:
patent: 2926753 (1960-03-01), Kohl et al.
patent: 3324627 (1967-06-01), Kohrt
patent: 3594985 (1971-07-01), Ameen et al.
patent: 3880615 (1975-04-01), Grunewald et al.
patent: 4834781 (1989-05-01), Grunewald et al.
Fritzsche Hans-J.
Grunewald Gerhard
Kriebel Manfred
Chiesa Richard L.
Metallgesellschaft Aktiengesellschaft
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