Alkylation of organic aromatic compounds in a dual bed system

Details Alkylation of organic aromatic compounds in a dual bed system Alkylation of organic aromatic compounds in a dual bed system

1989-07-26

1990-08-21

Caldarola, Glenn

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By condensation of entire molecules or entire hydrocarbyl...

585449, 585450, 585467, C07C 266

Patent

active

049508342

ABSTRACT:
Cumene is produced in a catalytic distillation column reactor having an upper bed of Omega type molecular sieve catalyst and a lower bed of Y type molecular sieve catalyst. Benzene and propylene are reacted in the upper bed where the Omega type sieve is more selective to cumene that the Y type sieve. Part of the reaction mixture flows down the column to the Y bed where benzene reacts with any unreacted propylene to produce cumene. Additionally, benzene reacts with dipropylbenzene in the Y bed to produce more cumene. Cumene is recovered as bottoms product and unreacted benzene recovered as overheads where it may be returned as reflux to the column to control the mole ratio of benzene to propylene.

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