Method of and apparatus for the separation of natural gas

Details Method of and apparatus for the separation of natural gas Method of and apparatus for the separation of natural gas

C - Chemistry, Metallurgy

07

C

23/344, 23/385,

C07C 9/04 (2006.01) C07C 7/00 (2006.01) C10L 3/00 (2006.01) F25J 3/08 (2006.01)

Patent

CA 1135287

ABSTRACT OF THE DISCLOSURE A method of and apparatus for the recovery of a methane-rich natural gas from a natural gas containing, apart from methane, also hydrogen sulfide, carbondioxide, higher hydrocarbons and, in most cases, organosulfur com- pounds. According to the invention a hydrocarbon fraction of C4 hydrocarbons and higher is naturally removed from the natural gas which is then subjected to a selective scrubbing for the removal of hydrogen sulfide with a regeneratable ex- traction, of scrubbing liquid. Next a C3 fraction is removed, the remaining gas being scrubbed with a second regeneratable washing agent, for the removal of carbondioxide to leave the methane-rich gas.

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