Removal of CO.sub.2 and/or H.sub.2 S and/or COS from gases conta

Details Removal of CO.sub.2 and/or H.sub.2 S and/or COS from gases conta Removal of CO.sub.2 and/or H.sub.2 S and/or COS from gases conta

1980-08-13

1982-06-22

Thomas, Earl C.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

423226, 423229, 423234, 423242, 423243, 55 68, 55 73, B01D 5334

Patent

active

043362338

ABSTRACT:
An aqueous solution containing from 0.81 to 1.3 moles of piperazine per liter is used as a washing agent for removing impurities such as H.sub.2 S, CO.sub.2 and COS from gases. Piperazine can also be used, in amounts of up to 0.8 mole per liter, together with physical or chemical solvents, to accelerate the absorption of H.sub.2 S, CO.sub.2 and COS. The washing process is used for natural gases, coke-oven gases, gases from the gasification of coal and synthesis gases, of any origin.

REFERENCES:
patent: 1783901 (1930-12-01), Bottoms
patent: 1951992 (1934-03-01), Perkins
patent: 3071433 (1963-01-01), Dunn
patent: 3653810 (1972-04-01), Bratzler et al.
patent: 3965244 (1976-06-01), Sykes, Jr.
patent: 3989811 (1976-11-01), Hill

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