Absorbent composition containing a severely-hindered amine mixtu

Details Absorbent composition containing a severely-hindered amine mixtu Absorbent composition containing a severely-hindered amine mixtu

1989-08-24

1990-10-09

Miller, Edward A.

Compositions

Co, s, negative element, or acid, bindant containing

252190, 252191, C09K 300

Patent

active

049618733

ABSTRACT:
The present invention relates to a new alkaline absorbent solution that reduces the H.sub.2 S content in a treated gas to below 10 vppm. The absorbent solution contains two severely-hindered amines, such as bis(tertiarybutylaminoethoxy)-ethane (BTEE) and ethoxyethoxyethanol-tertiarybutylamine (EEETB), a severely hindered amine salt, and/or a severely hindered aminoacid. This invention also describes a process for the removal of H.sub.2 S from fluid mixtures using this absorbent solution to produce a very low level of H.sub.2 S in the treated fluid. The process is also suitable for the selective removal of H.sub.2 S from fluid mixtures comprising H.sub.2 S and CO.sub.2.

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