Chemistry of hydrocarbon compounds – Purification – separation – or recovery – By contact with solid sorbent
Patent
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
Gantz Delbert E.
Hoatson Jr. James R.
Leader William
Morris Louis A.
Page II William H.
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