Cyclic adsorption/desorption purification.

摘要

Organic feedstocks containing an impurity are purified in a cyclic adsorption process by passage in the liquid phase through a fixed bed (32) of an impurity selective adsorbent whereby the impurity is selectively adsorbed and a purified feedstock recovered in unusually high yield by an adsorbent bed regeneration procedure involving the use of a portion of the purified feedstock in the vapor phase to countercurrently remove the liquid held in the bed void space and to displace a non-sorbable purge gas which is used to regenerate the adsorbent bed (32).