Process and apparatus for removing hydrocarbons from air-hydroca

Details Process and apparatus for removing hydrocarbons from air-hydroca Process and apparatus for removing hydrocarbons from air-hydroca

1983-07-26

1984-07-31

Spitzer, Robert H.

Gas separation

Means within gas stream for conducting concentrate to collector

55 48, 55 51, 55 58, 55 74, 55 88, 55162, 55163, 55387, B01D 5304

Patent

active

044628110

ABSTRACT:
Apparatus for recovering hydrocarbons from an air-hydrocarbon vapor mixture of the type including a pair of alternatively used carbon bed adsorbers which are used to remove hydrocarbon vapors from the mixture and which are desorbed of hydrocarbons by subjecting the beds alternatively to vacuum regeneration using a vacuum pump the output of which is passed through an absorber using liquid gasoline as the absorbent liquid. The efficiency of the process is increased by interrupting the flow of the absorbent liquid during the initial period of the regeneration during which period the hydrocarbon vapor content of the mixture is low due to the fact that a substantial vacuum is required to separate the hydrocarbons from the carbon bed.

REFERENCES:
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patent: 3902874 (1975-09-01), McAndrews
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patent: 4261716 (1981-04-01), Schwartz et al.
patent: 4276058 (1981-06-01), Dinsmore
patent: 4338101 (1982-07-01), Tuttle
patent: 4343629 (1982-08-01), Dinsmore et al.
patent: 4392870 (1983-07-01), Chieffo et al.

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