Aromatic hydrocarbon alkylation process

Details Aromatic hydrocarbon alkylation process Aromatic hydrocarbon alkylation process

1977-04-27

1978-08-22

Gantz, Delbert E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

203 23, 203 80, 203 87, 203DIG8, 260671P, 260674A, C07C 352

Patent

active

041089146

ABSTRACT:
A process for the production of alkylaromatic hydrocarbons by the alkylation of benzene wherein the alkylation zone effluent is fractionated to form a bottoms stream comprising benzene, the alkylaromatic hydrocarbon and a light paraffin. The light paraffin is then removed from the bottoms stream in a first recycle column which produces a recycled overhead stream comprising the paraffin and benzene. The bottoms stream of the first recycle column is separated in a second recycle column, which is operated at about the same bottom temperature but a lower pressure than the first recycle column. The benzene-rich overhead stream of the second recycle column is preferably recycled to the alkylation zone.

REFERENCES:
patent: 3265590 (1966-08-01), Redcay
patent: 3437705 (1969-08-01), Jones
patent: 3751504 (1973-08-01), Keown et al.

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