AROMATIC HYDROCARBON SEPARATION BY ADSORPTION

摘要

An improved adsorptive separation process for the separating of at least one C8 aromatic hydrocarbon from a hydrocarbon feed containing a mixture of C8 aromatic hydrocarbons which process employs a crystalline aluminosilicate adsorbent to selectively adsorb one C8 aromatic from the feed. The improvement basically comprises employing a desorbent containing para-diethylbenzene to increase the selectivity of crystalline aluminosilicate for a given feed aromatic and thereby allowing a more efficient separation with a higher purity extract stream recovered from the process.