Process of removing h.sub.2s.sub.1co.sub.2 cos and...

Details Process of removing h.sub.2s.sub.1co.sub.2 cos and... Process of removing h.sub.2s.sub.1co.sub.2 cos and...

B - Operations, Transporting

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D

252/30

B01D 53/14 (2006.01) B01D 53/52 (2006.01)

Patent

CA 1157841

ABSTRACT OF DISCLOSURE The present invention provides in a process of removing H2S, CO2, COS and mercaptans from gases by absorption in an absorbent solution, which is circulated between an absorbing zone and a regenerating zone and which contains at least one organic base dissolved in m?anol, the improvement wherein the absorbent solution contains one or more secondary or tertiary amines of general formula R1-NH-R2 or (R1)2-N-CH2-N-(R2)2, where- in R1 and R2 mean CH3 or CH2-CH3 or CH3-CH-CH3 in a total amount of at least 0.5 to 5.0 moles per liter, and tho?amine has or the amines have a boiling point between 40 and 110°C at 1 bar. This improvement permits a selective removal of ?2S from CO2- containing gases.

367838

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