Internally heat pumped single pressure distillative separations

Details Internally heat pumped single pressure distillative separations Internally heat pumped single pressure distillative separations

1981-03-30

1982-11-02

Sever, Frank

Refrigeration

Processes

Circulating external gas

62 39, 203 24, 203 26, B01D 314

Patent

active

043571530

ABSTRACT:
This process provides an efficient means for distillative separation of a gas mixture at a temperature below ambient without requiring either a dual pressure or low pressure distillation column. The process comprises supplying the gas at an elevated pressure to a single pressure distillation column, work-expanding the column overhead gas to drive a heat pump compressor, compressing any of several gases in the heat pump compressor so as to effect phase change heat transfer between condensing column reflux and boiling column bottom product, and separately withdrawing the depressurized gaseous separation products.

REFERENCES:
patent: 2134700 (1938-11-01), Brewster
patent: 3756035 (1973-09-01), Yearout
patent: 4088464 (1978-05-01), Bigi

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