System and method for separating a portion of a gas from a mixtu

Details System and method for separating a portion of a gas from a mixtu System and method for separating a portion of a gas from a mixtu

1990-10-24

1991-07-09

Spitzer, Robert

Gas separation

Means within gas stream for conducting concentrate to collector

55 68, 55158, B01D 5322

Patent

active

050302515

ABSTRACT:
A system for separating a portion of a first gas from a gaseous feed comprising a mixture of gases that is intermittently supplied to the system. The system comprises a membrane gas separator having at least one membrane through which the first gas permeates preferentially in comparison to other gases contained in the mixture. The separator is adpated to produce a nonpermeate gaseous product which is discharged from a nonpermeate gas side of the separator and in which the concentration of the first gas is lower than in the feed mixture. The system also includes a mechanism for supplying a gaseous purge stream to the separator when the feed mixture is not being supplied to the system. The concentration of the first gas is lower in the gaseous purge stream than in the feed mixture to purge residual amounts of the first gas contained in the membrane of the separator. The method of separating gases from an intermittently supplied feed is also disclosed.

REFERENCES:
patent: 3735558 (1973-05-01), Skarstrom et al.
patent: 4675030 (1987-06-01), Czarnecki et al.
patent: 4685940 (1987-08-01), Soffer et al.
patent: 4718921 (1988-01-01), Makino et al.
patent: 4783201 (1988-11-01), Rice et al.
patent: 4944776 (1990-07-01), Keyser et al.

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