Heat-pumped fractionation process

Details Heat-pumped fractionation process Heat-pumped fractionation process

1979-06-15

1980-10-28

Bascomb, Jr., Wilbur L.

Distillation: processes, separatory

And recovering heat by indirect heat exchange

Utilizing recovered heat for heating the distillation zone

203DIG4, 203DIG9, 62 26, 62 31, 202185A, 585800, B01D 128, B01D 314

Patent

active

042305357

ABSTRACT:
A process for separating two close-boiling chemical compounds by fractionation wherein a vapor stream removed from the overhead receiver is superheated by indirect heat exchange and is then further heated by compression. The thus-heated high pressure stream is cooled by heat exchange against the overhead vapor and split into at least two portions. One portion of the high pressure stream is passed through a reboiler at an intermediate point in a fractionation column. Preferably, both portions of the high pressure stream are subcooled and returned to the overhead receiver except for the overhead product drawn off.

REFERENCES:
patent: 2534274 (1950-12-01), Kniel
patent: 3187066 (1965-06-01), Nathan
patent: 3230155 (1966-01-01), Schurch
patent: 3414484 (1968-12-01), Carson et al.
patent: 3418215 (1968-12-01), Nirenberg
patent: 3568457 (1971-03-01), Briggs et al.
patent: 4137129 (1979-01-01), Bjorklund
The Oil and Gas Journal, Wolf, C. W. et al. Sep. 1, 1975 p.p. 85-88.

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