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Title: Process for the preparation of cumene

Abstract

Cumene is produced in a catalyst bed under 0.25 to 50 atmospheres of pressure and at temperatures in the range of 50 C to 500 C, using as the catalyst a molecular sieve characterized as acidic by feeding propylene to the catalyst bed while benzene is conveniently added through the reflux to result in a molar excess present in the reactor to that required to react with propylene, thereby reacting substantially all of the propylene and recovering benzene as the principal overhead and cumene and diisopropyl benzene in the bottoms. The bottoms are fractionated, the cumene recovered and the bottoms are contacted with benzene in the liquid phase in a fixed bed straight pass reactor under conditions to transalkylate the benzene thereby converting most of the diisopropyl benzene to cumene which is again separated and recovered. 2 figures.

Inventors:
; ;
Issue Date:
OSTI Identifier:
7281744
Patent Number(s):
5055627
Application Number:
PPN: US 7-405130
Assignee:
Chemical Research Licensing Company, Houston, TX (United States)
DOE Contract Number:  
FC07-80CS40454
Resource Type:
Patent
Resource Relation:
Patent File Date: 11 Sep 1989
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; BENZENE; CHEMICAL REACTIONS; CUMENE; SYNTHESIS; PROPYLENE; ALKYLATION; CATALYTIC EFFECTS; FRACTIONATION; MATERIALS RECOVERY; MOLECULAR SIEVES; SEPARATION PROCESSES; ADSORBENTS; ALKENES; AROMATICS; HYDROCARBONS; MANAGEMENT; ORGANIC COMPOUNDS; PROCESSING; WASTE MANAGEMENT; WASTE PROCESSING; 020500* - Petroleum- Products & By-Products; 400201 - Chemical & Physicochemical Properties

Citation Formats

Smith, Jr, L A, Arganbright, R P, and Hearn, D. Process for the preparation of cumene. United States: N. p., 1991. Web.
Smith, Jr, L A, Arganbright, R P, & Hearn, D. Process for the preparation of cumene. United States.
Smith, Jr, L A, Arganbright, R P, and Hearn, D. Tue . "Process for the preparation of cumene". United States.
@article{osti_7281744,
title = {Process for the preparation of cumene},
author = {Smith, Jr, L A and Arganbright, R P and Hearn, D},
abstractNote = {Cumene is produced in a catalyst bed under 0.25 to 50 atmospheres of pressure and at temperatures in the range of 50 C to 500 C, using as the catalyst a molecular sieve characterized as acidic by feeding propylene to the catalyst bed while benzene is conveniently added through the reflux to result in a molar excess present in the reactor to that required to react with propylene, thereby reacting substantially all of the propylene and recovering benzene as the principal overhead and cumene and diisopropyl benzene in the bottoms. The bottoms are fractionated, the cumene recovered and the bottoms are contacted with benzene in the liquid phase in a fixed bed straight pass reactor under conditions to transalkylate the benzene thereby converting most of the diisopropyl benzene to cumene which is again separated and recovered. 2 figures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {10}
}