Process for the production of cumene

Details Process for the production of cumene Process for the production of cumene

1980-12-19

1982-08-10

Davis, Curtis R.

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By condensation of entire molecules or entire hydrocarbyl...

585466, C07C 268

Patent

active

043439578

ABSTRACT:
Production of cumene by alkylation of benzene with propylene on a solid phosphoric acid catalyst, using in a first step a plurality of catalyst beds in series and in a second step a single catalyst bed, using an overall benzene/propylene molar ratio of at least 5:1, continuously delivering the benzene to the first bed, continuously delivering a series of streams of liquid propylene respectively to the first bed and, in the form of a cold stream, between each pair of contiguous beds, and carrying out a partial recycle of reaction products of the second step as a cold stream between the first and the second step, and using a benzene/propylene molar ratio higher than 13:1 at the inlet of each bed of the first step, and higher than 25:1 at the inlet of the bed of the second step.

REFERENCES:
patent: 2120702 (1938-06-01), Ipatieff et al.
patent: 2613188 (1952-10-01), Mavity
patent: 3813451 (1974-05-01), Canfield et al.
patent: 4051191 (1977-09-01), Ward
patent: 4108914 (1978-08-01), Gewartowski

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