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Bed height of the adsorbent in small air separation unit

Bed height of the adsorbent in small air separation unit
Dec 22, 2021
Author: DEAR AST

With a certain amount of adsorbent, the height of the adsorbent must not be less than the length of the adsorption zone. This is because when the adsorbent bed height is lower than the length of the adsorption zone, the adsorber will be switched on and the adsorption capacity will be small or even zero. At this point it is necessary to reduce the adsorption cross section and increase the bed height to increase the adsorption capacity. But this in turn will cause the gas flow rate to increase, if the flow rate is too fast, the gas residence time is less than the adsorption time, the adsorption capacity will also drop to zero. Therefore the adsorber should not only have sufficient height, but also sufficient cross-sectional area.

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