Control of carbon monoxide partial pressure in sour gas absorpti

Details Control of carbon monoxide partial pressure in sour gas absorpti Control of carbon monoxide partial pressure in sour gas absorpti

1982-12-08

1984-10-23

Andrews, R. L.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

55 72, 55 73, 423226, B01D 5334, C01B 1704

Patent

active

044787995

ABSTRACT:
In the removal of sour gases, H.sub.2 S in particular, from CO-containing gaseous mixtures containing heavy metal carbonyls by scrubbing under pressure at temperatures of below 0.degree. C. with a scrubbing medium, the scrubbing medium is regenerated by inter alia, being heated by means of heat exchangers, and such exchangers are normally fouled by precipitates of metal sulfides which owe their presence to the decomposition of the metal carbonyls to form reactive heavy metal which combines with sulfide ion. To avoid fouling of the heat exchangers, the CO partial pressure is increased during the heating of the loaded scrubbing medium, to above the partial pressure of the CO in equilibrium with the carbonyls in the scrubbing medium thereby preventing the decomposition of the carbonyls.

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Ranke, Gerhard, "Advantages of the Rectisol-Wash Process in Selective H.sub.2 S Removal from Gas Mixtures", Linde Reports on Science and Technology, 18/1973, pp. 7-13.

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