Integrated fractionation in the recovery of alkylaromatic hydroc

Details Integrated fractionation in the recovery of alkylaromatic hydroc Integrated fractionation in the recovery of alkylaromatic hydroc

1983-11-18

1985-11-26

Bashore, S. Leon

Distillation: processes, separatory

And recovering heat by indirect heat exchange

203 25, 203 71, 203 98, 203 99, 585719, B01D 300, C07C 354

Patent

active

045553114

ABSTRACT:
A method is disclosed for fractionating a hydrocarbon conversion zone effluent stream comprising at least three components which are to be isolated into separate streams. A two-column system for fractionating the effluent of a benzene alkylation zone is employed. The overhead vapor of a downstream second column is condensed in a side reboiler of a preceding recycle column. This side reboiler is located between the feed point to the recycle column and a separate reboiler located at the bottom of the recycle column. The utilities cost of performing the fractionation is reduced.

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