B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
23/346
B01D 53/14 (2006.01)
Patent
CA 1199476
ABSTRACT OF THE DISCLOSURE: Process of desulfurizing gases with an amine- containing absorbent solution wherein, the gas which contains sulfur compounds consisting of H2S and/or COS is scrubbed with an absorbent solution which contains at least one amine. The gas to be desulfurized which enters the scrubbing zone is at a temperature in the range of 25 to 100°C and rises in the scrubbing zone in a countercurrent to the scrubbing solution. The gas leaving the absorbent solution is indirectly cooled to a temperature which is at least 20°C below the entrance tem- perature of the gas and is not below 5°C. The indirect cool- ing results in a condensate, which contains at least one secondary amine. That condensate is passed through the scrub- bing zone as an absorbent solution. The condensate leaving the scrubbing zone contains at least 10 mole secondary amine and preferably at least 100 moles secondary amine per mole H2S and COS in the gas to be desulfurized. The gas to be desulfurized suitably contains secondary amine used in the absorbent solution as well as an organic solvent, such as methanol, ethanol or isopropanol.
437264
Doerges Alexander
Hude Anton
Kriebel Manfred
Schlauer Johann
Metallgesellschaft Aktiengesellschaft
Robic Robic & Associes/associates
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