HF regeneration in aromatic hydrocarbon alkylation process

Details HF regeneration in aromatic hydrocarbon alkylation process HF regeneration in aromatic hydrocarbon alkylation process

1983-11-30

1985-03-05

Davis, Curtis R.

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By condensation of entire molecules or entire hydrocarbyl...

585464, C07C 264

Patent

active

045032777

ABSTRACT:
A process is disclosed for the production of alkylaromatic hydrocarbons by the HF-catalyzed reaction of an aromatic hydrocarbon with a C.sub.8 -plus acyclic olefin. The production of linear alkylbenzenes is preferred. The HF is regenerated in a regeneration column in which high boiling compounds are removed from the HF fed to the column. The main stream of HF enters an upper intermediate point in the regeneration column. A second portion of the HF is fed to the top of the regeneration column as reflux. This second portion of HF is withdrawn from the reaction zone rather than from the overhead receiver of the HF regeneration column as in the prior art regeneration method.

REFERENCES:
patent: 3249650 (1966-05-01), Fenske
patent: 3494971 (1970-02-01), Fenske
patent: 3721720 (1973-03-01), Chapman et al.
patent: 3950448 (1976-04-01), Witt
patent: 3975164 (1976-08-01), Brown, Jr.
patent: 4237327 (1980-12-01), Winter
patent: 4237328 (1980-12-01), Winter

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