Method and system for the fractionation of ethane-propane mixtur

Details Method and system for the fractionation of ethane-propane mixtur Method and system for the fractionation of ethane-propane mixtur

1979-06-04

1981-06-16

Yudkoff, Norman

Refrigeration

Processes

Circulating external gas

62 24, F25J 302

Patent

active

042735661

ABSTRACT:
Relatively high pressure mixtures consisting essentially of a major ethane component and a minor, but substantial, propane component are separated into relatively pure ethane and propane fractions by subjecting such mixtures to a number of specific cooling steps and an expansion step preparatory to and in combination with a fractional distillation step. The overhead ethane fraction of the method has a propane content of no greater than about 10 mole percent and is provided in the gas phase. The propane bottom fraction of the method is provided in the liquid phase.

REFERENCES:
patent: 2953905 (1960-09-01), Chrones et al.
patent: 3398546 (1968-08-01), Nelson et al.
patent: 3929438 (1975-12-01), Harper et al.
patent: 4061481 (1977-12-01), Campbell et al.

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