Parallel stream heat exchange for separation of ethane and...

Details Parallel stream heat exchange for separation of ethane and... Parallel stream heat exchange for separation of ethane and...

F - Mech Eng,Light,Heat,Weapons

25

J

162/113

F25J 3/02 (2006.01) C07C 7/04 (2006.01)

Patent

CA 1235650

"PARALLEL STREAM HEAT EXCHANGE FOR SEPARATION OF ETHANE AND HIGHER HYDROCARBONS FROM A NATURAL OR REFINERY GAS" Abstract For the separation of ethane and higher hydrocarbons from a high pressure incoming gas containing hydrocarbons, the raw gas is cooled and expanded in several stages and the condensates that are produced are fed to a rectifying column to provide an overhead gaseous product essentially consisting of methane and a bottoms product consisting essentially of ethane and higher hydrocarbons. To save energy, the raw gas and/or the product streams are heat exchanged in parallel streams under different pressures, the cooled high-pressure gas is work-expanded and the condensates produced by cooling and expansion are fed separately to the rectifying colum.

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