Separation process

Details Separation process Separation process

1980-02-07

1982-01-26

Gantz, Delbert E.

Chemistry of hydrocarbon compounds

Purification, separation, or recovery

By contact with solid sorbent

55 75, 208310R, 208310Z, 210674, 210690, C07C 712

Patent

active

043130151

ABSTRACT:
A process for separating three components from a feedstream employing an adsorbent and desorbent material which in combination have selectivities for the components in descending order of magnitude. The process uses a simulated-moving bed counter current flow system with an intermediate raffinate stream taken off the column at about the midpoint of the adsorption zone in addition to the usual extract and raffinate product streams. In a preferred embodiment the first component is para-xylene, the second component is ethyl benzene, and the third component is a mixture of meta and ortho-xylene.

REFERENCES:
patent: 3715409 (1973-02-01), Broughton
patent: 3761533 (1973-09-01), Otani et al.
patent: 3997620 (1976-12-01), Neuzil

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