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US 4,376,226 AGranted
Process for the separation of ortho aromatic isomers by selective adsorption
AssigneeExxon Research & Engineering Co.
InventorsDaniel D. Rosenfeld, David E. W. Vaughan
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Abstract
An improved process for separating ortho aromatic isomers from a feed stream containing a mixture of aromatics by contacting the feed stream with a bed of the crystalline aluminosilicate adsorbent CSZ-1. The adsorbed ortho aromatic isomer is removed from the adsorbent by desorption.
Claims18
An adsorptive separation process for separating the ortho aromatic isomers from a hydrocarbon feed stream containing a mixture of aromatics comprising:
- (a) contacting said hydrocarbon feed stream with a bed of a crystalline aluminosilicate adsorbent of CSZ-1;
- (b) withdrawing from said bed of adsorbent a raffinate stream containing less of the selectively adsorbed ortho aromatic isomer of the feed stream;
- (c) desorbing the adsorbed ortho aromatic isomer to effect displacement thereof;
- and
- (d) withdrawing from the adsorbent bed an extract stream containing the ortho aromatic isomer.
2 more elements
Dependencies are inferred from the claim text.