Zeolitic para-xylene separation with tetralin derivatives as hea

Details Zeolitic para-xylene separation with tetralin derivatives as hea Zeolitic para-xylene separation with tetralin derivatives as hea

1991-03-05

1992-04-21

McFarlane, Anthony

Chemistry of hydrocarbon compounds

Purification, separation, or recovery

By contact with solid sorbent

585820, 208310Z, C07C 713

Patent

active

051070626

ABSTRACT:
A chromatographic process able to separate paraxylene from C.sub.8 isomers and C.sub.9 aromatics. In the process, the para-xylene-containing feed mixture is contacted with an X or Y zeolite adsorbent having Group IA or IIA cations, e.g., barium and/or potassium, at exchangeable cationic sites while maintaining the water content of the adsorbent at about 4.2-6% (LOI). The para-xylene components are selectively adsorbed onto the adsorbent. The non-adsorbed feed is then removed from the adsorbent and the para-xylene recovered by desorption with tetralin or alkyl derivatives of tetralin. The C.sub.9 's and the other xylene isomers in the raffinate, can be separated from this heavy desorbent by fractionation of the raffinate and the desorbent recycled to the process.

REFERENCES:
patent: 2985589 (1961-05-01), Broughton
patent: 3040777 (1962-06-01), Carson et al.
patent: 3422848 (1969-01-01), Liebman et al.
patent: 3626020 (1971-12-01), Neuzil
patent: 3663638 (1972-05-01), Neuzil
patent: 3665046 (1972-05-01), De Rosset
patent: 3668266 (1972-06-01), Chen et al.
patent: 3686342 (1972-08-01), Neuzil
patent: 3700744 (1972-10-01), Berger et al.
patent: 3706812 (1972-12-01), De Rosset et al.
patent: 3723302 (1973-03-01), Pharis et al.
patent: 3734974 (1973-05-01), Neuzil
patent: 3894109 (1975-07-01), Rosback
patent: 3997620 (1976-12-01), Neuzil
patent: 4014949 (1977-03-01), Hedge
patent: 4159284 (1979-06-01), Seko et al.
patent: 4313015 (1982-01-01), Broughton
patent: 4440832 (1983-09-01), Gerhold
patent: 4478821 (1984-10-01), Gerhold
patent: 4642397 (1987-02-01), Zinnen et al.
patent: 4864069 (1989-09-01), Zinnen
patent: 4886929 (1989-12-01), Neuzil et al.
patent: 5057643 (1991-10-01), Zinnen
Principles of Adsorption and Adsorption Processes, Ruthven, John Wiley and Sons, 1984, pp. 242-244.

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