Adsorption process and apparatus
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United States of America Patent
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Dec 26, 2000
Grant Date -
N/A
app pub date -
May 21, 1999
filing date -
May 21, 1999
priority date (Note) -
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Abstract
The adsorption of at least one component of a gas mixture is improved by passing the gas through an adsorption zone wherein the adsorbent is distributed in rectilinear channels that stepwise both diminish in transverse size and hold a diminished weight of adsorbent. An adsorption zone with only two steps or stages of reduced channel size and reduced adsorbent weight in the flow direction of a gas passed therethrough permits much greater capture of the adsorbate component with an equivalent total weight of adsorbent when compared with the same adsorption zone with a single channel size and a uniform weight of adsorbent. Three or more stages of diminishing channel size and adsorbent weight in the flow direction of the gas passed therethrough may be chosen for separating some gas mixtures. Greater adsorbent capture effectiveness leads to longer adsorption periods between regeneration periods and reduced fuel consumption in regenerating an adsorbent distributed in two or more stages of diminishing weight and diminishing channel size. Fuel economy is an additional benefit of the novel system.
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