Process for the selective separation of para-xylene from C8 arom

Chemistry of hydrocarbon compounds – Purification – separation – or recovery – By contact with solid sorbent

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585826, 208310Z, C07C 712

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active

048990175

ABSTRACT:
A process scheme for the recovery of high purity p-xylene or p-xylene and ethyl benzene from C.sub.8 aromatics is described. In the process, zeolites such as ZSM-5 type, zeolite beta and ZSM-11 with optimum silica alumina ratio is used as the adsorbent and light hydrocarbons, such as C.sub.5 is used as the desorbent. The process system is operated isothermally at low temperature and low pressures.

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Broughton, D. B., et al., "The Parex Process for Recovering Para Xylene" CEP. 66 70-75, #9, (1970).
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