Exxon Research and Engineering Company

Fred J Heinzelmann

Guido Sartori

W S Ho

Geoffrey R Say

James P Glass, Jr

Jan A Sarsten

George R Chludzinski

Noah S Rothblatt

Ferdinand C Cataneo

An alkaline absorbent composition comprising a severely hindered amino compound and an amine salt is provided. A process for the removal of H.sub.2 S from fluid mixtures using this absorbent composition to produce a very low level of H.sub.2 S in the treated fluid is also provided. The process is also suited for the selective removal of H.sub.2 S from fluid mixtures comprising H.sub.2 S and CO.sub.2.

Absorbent composition containing a severely hindered amino compound and

A method for separating a cyclic urea degradation product from a solution, such as a scrubbing solution comprising n-cyclohexyl-1,3-propane diamine, an alkali metal carbonate and cyclic urea, is disclosed. The solution is passed to a vacuum crystallization zone wherein at least a portion of the cyclic urea is crystallized after which the solution is passed to a filtration zone for separation of the cyclic urea crystals from the solution.

Removal of degradation product from gas treating solution

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Fanwood, NJ, United States of America

Fred J Heinzelmann