Method of operating an isostripper column

Details Method of operating an isostripper column Method of operating an isostripper column

1980-08-25

1981-07-28

Bascomb, Jr., Wilbur L.

Distillation: processes, separatory

And recovering heat by indirect heat exchange

Utilizing recovered heat for heating feed

203 27, 203 88, 203 94, 203DIG19, 585719, 585723, 585800, B01D 306, C07C 256

Patent

active

042808804

ABSTRACT:
A process for the separation of isobutane from an alkylation reaction zone hydrocarbon effluent stream comprising isobutane, n-butane, propane and alkylate is disclosed. The hydrocarbon effluent stream is charged to an isostripper column. An isobutane vapor stream from the column is condensed in indirect heat exchange with the lower liquid stream from said column comprising n-butane. The lower liquid stream is flashed in indirect heat exchange with said vapor stream at conditions to provide a vapor phase, said vapor phase being compressed and recycled to said column at a temperature to promote vapor formation therein.

REFERENCES:
patent: 3370003 (1968-02-01), Borst
patent: 3402124 (1968-09-01), Jones
patent: 3494861 (1970-02-01), Munro
patent: 3568457 (1971-03-01), Briggs et al.
patent: 4115471 (1978-09-01), Kesler
patent: 4137129 (1979-01-01), Bjorklund
patent: 4180526 (1979-12-01), Chapman

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