Process for the separation of para-xylene

Details Process for the separation of para-xylene Process for the separation of para-xylene

1986-02-27

1987-11-10

Metz, Andrew H.

Chemistry of hydrocarbon compounds

Purification, separation, or recovery

By contact with solid sorbent

208310Z, 585820, C07C 712

Patent

active

047059095

ABSTRACT:
The separation of para-xylene from a mixture of C.sub.8 aromatic isomers in a zeolite adsorption process is improved by use of water as the desorbent. Increased desorption efficiency is obtained by the addition to the water of small amounts of a C.sub.1 to C.sub.8 alcohol, an anionic surfactant, an alkali solution or a mixture thereofs. Separation of water from the para-xylene product and raffinate is accomplished by phase separation.

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patent: 3732326 (1973-05-01), Chen
patent: 3895080 (1975-07-01), Davis
patent: 4444986 (1984-04-01), Dessau

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