Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1990-10-15
1992-01-21
Spitzer, Robert
Gas separation
Means within gas stream for conducting concentrate to collector
55 68, 55 74, 55158, 55387, B01D 5304, B01D 5322
Patent
active
050824716
ABSTRACT:
A life-support system including a shelter, combined with equipment for sustaining a breathable atmosphere within the shelter. The breathable atmosphere is sustained by providing a supply of fresh air to the shelter, and removing carbon dioxide from the shelter. To provide the air supply, air containing a toxic agent is fed to a membrane separation unit. The membrane unit has a high selectivity to the permeation of oxygen over toxic agent and produces an oxygen-enriched permeate stream, while rejecting almost all of the toxic agent. The oxygen-enriched air is then passed through a unit containing a sorbent, such as activated carbon, to remove any remaining traces of toxic material before being fed to the shelter. The carbon dioxide content of the shelter air is kept below 1% either by sweeping the carbon dioxide away by maintaining a relatively high flow of air into and out of the shelter, or by withdrawing air from the shelter, treating it in a separate unit of equipment to remove carbon dioxide, and then returning the treated air to the shelter.
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Athayde Amulya L.
Baker Richard W.
Wijmans Johannes G.
Farrant J.
Membrane Technology & Research Inc.
Spitzer Robert
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