Absorption process for the separation of gaseous mixtures

Details Absorption process for the separation of gaseous mixtures Absorption process for the separation of gaseous mixtures

C - Chemistry, Metallurgy

10

K

48/46

C10K 1/00 (2006.01)

Patent

CA 1120723

ABSTRACT OF THE DISCLOSURE A process is provided herein for preventing corrosion caused by the formation of iron pentacarbonyls and sulfur-con- taining iron carbonyls, of apparatus made of iron or normal steel and occuring during the treatment of a gaseous mixture containing carbon monoxide and hydrogen sulfide with an aqueous alcoholic solution acting as a physical absorbent. The process involves conducting the treatment in the presence of at least one alkaline reacting inorganic compound selected from the group consisting of ammonia and sodium hydroxide. This substantially prevents the formation of the iron pentacarbonyls and carbonyls. It is therefore possible to replace the heretofore employed apparatus parts made of high alloy fine steel by those made of normal steel and thereby to attain considerable savings in initial investment cost without thereby impairing the flawless operation of the process.

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