Multi-stage adsorption process for separating organic...

Details Multi-stage adsorption process for separating organic... Multi-stage adsorption process for separating organic...

B - Operations, Transporting

01

D

182/3

B01D 15/00 (2006.01) C07C 29/94 (2006.01)

Patent

CA 1177761

ABSTRACT Organic liquid-water solutions, such as 5-30 W % alcohol in water, are separated efficiently in a two-stage adsorption process using a bed of selected adsorbent material in each stage to produce a concentrated organic product. Each adsorbent is selected to effectively adsorb the minor com- ponent from the feed solution and thus provide a dehydrated alcohol product. In the first-stage adsorber bed, activated carbon is used to selectively adsorb the alcohol, after which the desorbed alcohol vapor is passed to a second-stage adsorber bed of molecular sieve adsorbent for virtually complete removal of the remaining water. The process provi- des a dehydrated alcohol liquid product preferably containing less than about 2 W % water, and requires low energy usage.

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