Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1985-07-01
1987-06-02
Hart, Charles
Gas separation
Means within gas stream for conducting concentrate to collector
55 58, 55 62, 55 88, 55179, B01D 5304, B01D 5314
Patent
active
046700285
ABSTRACT:
A process for the recovery of hydrocarbon vapors from an air-hydrocarbon mixture expelled as a result of storage breathing or loading of a vented hydrocarbon vessel. An inlet air-hydrocarbon mixture is passed to a first absorber in which is fed a vacuum flashed liquid hydrocarbon absorbent to produce a first absorber overhead gas which is passed to a solid absorbent bed. Once saturated, the absorbed hydrocarbon on the solid absorbent is removed by vacuum regeneration, separated from liquid supplied by the liquid ring pump creating the vacuum, and passed to a second absorber vessel where fresh liquid hydrocarbon absorbent is contacted therewith to produce a second absorber overhead gas which is combined with the incoming inlet air-hydrocarbon mixture to pass therewith to the first absorber. Hydrocarbon free air is vented from the solid absorbent bed during the adsorption mode.
REFERENCES:
patent: 3877893 (1975-04-01), Sweny et al.
patent: 4066423 (1978-01-01), McGill et al.
patent: 4261716 (1981-04-01), Schwartz et al.
patent: 4276058 (1981-06-01), Dinsmore
patent: 4462811 (1984-07-01), Dinsmore et al.
Hart Charles
McCarthy Bill D.
McGill Incorporated
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