Closed-loop vacuum fractionation process

Details Closed-loop vacuum fractionation process Closed-loop vacuum fractionation process

B - Operations, Transporting

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202/101, 196/278

B01D 3/32 (2006.01) B01D 3/10 (2006.01) C07C 7/08 (2006.01) C10G 7/00 (2006.01) C10G 21/28 (2006.01)

Patent

CA 1144513

ABSTRACT A fractionation process wherein a fractionation column is maintained at a subatmospheric pressure through the use of a stream-jet ejector. Water drawn off the over- head receiver of the fractionation column is vaporized by indirect heat exchange to form the moderate pressure steam charged to the ejector. The effluent of the ejector is passed through a condenser, and the resultant condensate is recycled to the overhead receiver by admixture with the overhead vapor stream of the fractionation column. The disposal of hydrocarbon-contaminated aqueous overhead liq- uid is thereby minimized.

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