Separation of gas mixtures by vacuum swing adsorption (VSA) in a

Details Separation of gas mixtures by vacuum swing adsorption (VSA) in a Separation of gas mixtures by vacuum swing adsorption (VSA) in a

1989-08-23

1991-05-14

Spitzer, Robert

Gas separation

Means within gas stream for conducting concentrate to collector

55 58, 55 66, 55 68, 55 75, B01D 5304

Patent

active

050152718

ABSTRACT:
2-adsorber systems of the VSA process have been found which, surprisingly, require only a slightly higher energy consumption in comparison with the 3-adsorber systems, but are considerably more favorable in terms of investment in the plant because of the small number of valves and adsorbers, and in particular adsorptive separation of a gas mixture (crude gas) in containers (adsorbers) filled with adsorbent, with the phase which is adsorbed less strongly, if at all, being obtained and the adsorbed gas content (adsorbate) being desorbed under reduced pressure, e.g. by means of a vacuum pump has been found. The process is characterized in that two adsorbers (A and B) are operated alternately so that the crude gas feed and also the desorption of the adsorbate, i.e. connection of the vacuum pump, is not stopped at any time during the separation process, separation of the crude gas partly taking place under reduced pressure when the maximum adsorption pressure has been reached.

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Tappipress, 1987 Int. Oxygen Delignification Conference pp. 151-153.

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