Integrated ngl recovery in the production of liquefied...

Details Integrated ngl recovery in the production of liquefied... Integrated ngl recovery in the production of liquefied...

F - Mech Eng,Light,Heat,Weapons

25

J

F25J 3/06 (2006.01) C10L 3/10 (2006.01) F25J 1/02 (2006.01)

Patent

CA 2593886

Process for the liquefaction of natural gas and the recovery of components heavier than methane wherein natural gas is cooled and separated in a first distillation column into an overhead vapor enriched in methane and a bottoms stream enriched in components heavier than methane, wherein the first distillation column utilizes a liquefied methane-containing reflux stream. This reflux stream may be provided by a condensed portion of the overhead vapor or a portion of totally condensed overhead vapor that is subsequently warmed. The bottoms stream may be separated in one or more additional distillation columns to provide one or more product streams, any of which are partially or totally withdrawn as recovered hydrocarbons. A stream of unrecovered liquid hydrocarbons may be combined with either the condensed portion of the overhead vapor or a portion of totally condensed overhead vapor that is subsequently warmed.

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