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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.degree. C. to 500.degree. C., using as the catalyst a mole 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.

Inventors:
 [1];  [2];  [2]
  1. (Bellaire, TX)
  2. Houston, TX
Issue Date:
Research Org.:
CR & L/NEOCHEM JOINT VENTURE
OSTI Identifier:
868015
Patent Number(s):
5055627
Assignee:
Chemical Research & Licensing Company (Houston, TX)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07C - ACYCLIC OR CARBOCYCLIC COMPOUNDS
DOE Contract Number:  
FC07-80CS40454
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
process; preparation; cumene; produced; catalyst; bed; 25; 50; atmospheres; pressure; temperatures; range; degree; 500; mole; sieve; characterized; acidic; feeding; propylene; benzene; conveniently; added; reflux; result; molar; excess; reactor; required; react; reacting; substantially; recovering; principal; overhead; diisopropyl; bottoms; fractionated; recovered; contacted; liquid; phase; fixed; straight; pass; conditions; transalkylate; converting; separated; sieve characterized; molar excess; mole sieve; principal overhead; recovering benzene; reacting substantially; liquid phase; fixed bed; catalyst bed; conveniently added; /585/

Citation Formats

Smith, Jr., Lawrence A., Arganbright, Robert P, and Hearn, Dennis. Process for the preparation of cumene. United States: N. p., 1991. Web.
Smith, Jr., Lawrence A., Arganbright, Robert P, & Hearn, Dennis. Process for the preparation of cumene. United States.
Smith, Jr., Lawrence A., Arganbright, Robert P, and Hearn, Dennis. Tue . "Process for the preparation of cumene". United States. https://www.osti.gov/servlets/purl/868015.
@article{osti_868015,
title = {Process for the preparation of cumene},
author = {Smith, Jr., Lawrence A. and Arganbright, Robert P and Hearn, Dennis},
abstractNote = {Cumene is produced in a catalyst bed under 0.25 to 50 atmospheres of pressure and at temperatures in the range of 50.degree. C. to 500.degree. C., using as the catalyst a mole 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {1}
}