Process for separating a gaseous flow by a PSA procedure

Details Process for separating a gaseous flow by a PSA procedure Process for separating a gaseous flow by a PSA procedure

1998-07-06

2000-05-30

Spitzer, Robert H.

Gas separation: processes

Solid sorption

Including reduction of pressure

95130, 95902, B01D 53047

Patent

active

060686782

ABSTRACT:
A PSA process for the separation of a feed gas, for example air, containing at least one first component, such as nitrogen, and a second component, such as oxygen, by preferential adsorption of the first component at a high adsorption pressure, on at least one bed of particles of an adsorbent material and recovery of a gas flow enriched in the second component, with desorption of the first component at a low desorption pressure. The ratio (.mu./.sigma.) of the mean granulometry (.mu.) of the adsorbent particles contained in the bed, to the breadth of granulometric distribution (.sigma.) of the particles, is comprised within the range 1.5 to 15, the particles of adsorbent material being particles of zeolite, such as zeolite X or zeolite LSX, exchanged by metallic cations, preferably cations of lithium and/or calcium.

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