Process for transalkylation of alkyl-aromatic hydrocarbons...

Details Process for transalkylation of alkyl-aromatic hydrocarbons... Process for transalkylation of alkyl-aromatic hydrocarbons...

2005-11-09

2009-12-08

Dang, Thuan Dinh (Department: 1797)

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By alkyl or aryl transfer between molecules, e.g.,...

C585S470000

Reexamination Certificate

active

07629499

ABSTRACT:
A process for transalkylation of an alkyl-aromatic hydrocarbon feedstock that has at least 9 carbon atoms per molecule that comprises a) the introduction of said alkyl-aromatic hydrocarbon feedstock at the inlet of a first reaction zone where it is brought into contact with at least a first zeolitic catalyst, b) the introduction of at least a portion of the effluent that is obtained from stage a) and a feedstock that contains benzene and/or toluene at the inlet of a second reaction zone that contains at least a second zeolitic catalyst, and c) the separation of at least a portion of the effluent that is obtained from stage b) is described.

REFERENCES:
patent: 4365104 (1982-12-01), Kaeding
patent: 5030787 (1991-07-01), Absil et al.
patent: 5942651 (1999-08-01), Beech, Jr. et al.
patent: 6136290 (2000-10-01), Benazzi et al.
patent: 6281399 (2001-08-01), Schulz et al.
patent: 6359184 (2002-03-01), Kato et al.
UOP TA'C9—3 pages, (2006).

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