Xylene isomerization

Details Xylene isomerization Xylene isomerization

2005-08-02

2005-08-02

Dang, Thuan Dinh (Department: 1764)

Chemistry of hydrocarbon compounds

Plural serial diverse syntheses

To produce aromatic

C585S477000, C585S481000

Reexamination Certificate

active

06924405

ABSTRACT:
A xylene isomerization process is disclosed in which any ethylbenzene in the feed is removed, either by dealkylation or isomerization, in a separate reactor upstream of the xylene isomerization reactor and the xylene isomerization catalyst is contained in the same reactor, typically a clay treater, as that used to accommodate the olefin removal catalyst. In certain cases, a single catalyst may be used to effect both xylene isomerization and olefin removal.

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patent: 5689027 (1997-11-01), Abichandani et al.
patent: 5705726 (1998-01-01), Abichandani et al.
patent: WO 99/38936 (1999-08-01), None
patent: WO 01/30942 (2001-05-01), None

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