Oxychlorination process

Details Oxychlorination process Oxychlorination process

1995-03-27

1997-02-04

Siegel, Alan

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

570245, C07C 1715, C07C 17154

Patent

active

056000430

ABSTRACT:
The subject invention relates to a process for oxychlorination of ethylene to produce 1,2-dichloroethane. The process comprises contacting a mixture of ethylene, oxygen or oxygen containing gas and hydrogen chloride with a fixed or fluidized catalyst composition in a reaction zone and recovering 1,2-dichloroethane from the effluents of the reaction zone.
The invention is embodied in a process for the oxychlorination of ethylene to produce 1,2-dichloroethane by contacting a mixture of ethylene, oxygen containing gas and hydrogen chloride with a catalyst composition in a reaction zone and recovering 1,2-dichloroethane from the effluents of the reaction zone the process comprising introducing ethylene, HCl and oxygen containing gas into said reaction zone in a ratio of 1.8 and 2.2 moles of HCl per mole of ethylene and from 0.5 to 1 mole of oxygen per mole of ethylene, the oxychlorination process taking place at a temperature of from 215.degree. C. to 230.degree. C., ethylene conversion on a weight basis is at 99% or higher and the mixture is contacted with a catalyst including a support which has deposited thereon a combination of metal chloride salts, the combination consisting essentially of from 2 to 8% copper, from 0.2 to 2% potassium and from 0.01 to 0.19% magnesium, all percentages expressed as the metals on a weight percent basis.

REFERENCES:
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patent: 4740644 (1988-04-01), Eichhorn
patent: 4910354 (1990-03-01), Derleth et al.
patent: 5004849 (1991-04-01), Hirschmann et al.
patent: 5011808 (1991-04-01), Scott
patent: 5227548 (1993-07-01), Scott
Reprinted from Kirk-Othmer: "Encyclopedia of Chemical Technology", vol. 23, Third Edition, Copyright 1983 by John Wiley & Sons, Inc., pp. 865-885.

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