Integrated deethanizer ethylene fractionation column

Details Integrated deethanizer ethylene fractionation column Integrated deethanizer ethylene fractionation column

C - Chemistry, Metallurgy

07

C

C07C 11/04 (2006.01) C07C 7/04 (2006.01) C07C 7/09 (2006.01) C07C 9/06 (2006.01) C07C 11/00 (2006.01)

Patent

CA 2299985

An integrated deethanizer and ethylene fractionation column and process for separating a feed stream comprising ethylene, ethane and C3+ is disclosed. A single shell houses a refluxed upper portion and a lower portion of the column. A generally vertical wall partitions the lower portion of the column into a deethanizer section and an ethylene stripper section. The upper column portion is used as the absorption section of the ethylene fractionator. The feed is supplied to an intermediate stage in the deethanizer, and the deethanizer is operated at a lower pressure (and correspondingly lower temperature) matching that of the ethylene fractionation. The design allows the use of one slightly larger column in place of the two large columns previously used for separate deethanization and ethylene fractionation.

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