Process for the manufacture of 1,2-dichloroethane

Details Process for the manufacture of 1,2-dichloroethane Process for the manufacture of 1,2-dichloroethane

2005-12-21

2010-02-23

Parsa, Jafar (Department: 1621)

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

Organic compounds

Halogen containing

C570S224000, C526S062000

Reexamination Certificate

active

07667084

ABSTRACT:
Process for the manufacture of 1,2-dichloroethane starting with a hydrocarbon source according to which: a) the hydrocarbon source is subjected to a first cracking step, namely a pyrolysis step performed in a cracking oven, thus producing a mixture of cracking products; b) the said mixture of cracking products is subjected to a succession of treatment steps ending with a drying step which makes it possible to obtain a mixture of products containing ethylene and other constituents; c) the said mixture of products containing ethylene derived from step b) is separated into at least one fraction containing ethylene and into a heavy fraction; d) the fraction(s) containing the ethylene is (are) conveyed to a chlorination reactor and/or to an oxychlorination reactor, in which reactors most of the ethylene present is converted to 1,2-dichloroethane; e) the 1,2-dichloroethane obtained is separated from the streams of products derived from the chlorination and oxychlorination reactors; the process being characterized in that a step for hydrogenating the acetylene is carried out upstream of the drying step ending the succession of treatment steps constituting step b) and/or on at least one of the fractions containing ethylene after separation during step c).

REFERENCES:
patent: 5789499 (1998-08-01), Masuko et al.
patent: 6900363 (2005-05-01), Harth et al.
patent: 2004/0267063 (2004-12-01), Harth et al.
patent: 2007/0142682 (2007-06-01), Strebelle et al.
patent: 2007/0161830 (2007-07-01), Strebelle
patent: 2009/0203854 (2009-08-01), Strebelle et al.
patent: 1 207 767 (1970-10-01), None
patent: 00 26164 (2000-05-01), None
patent: 03 044125 (2003-05-01), None
patent: 03 048088 (2003-06-01), None
Heinz Zimmermann, et al., “Ethylene”, Ullmann's Encyclopedia of Industrial Chemistry, XP 002356911, pp. 1-47, 2000.
U.S. Appl. No. 11/722,603, filed Jun. 22, 2007, Strebelle, et al.
U.S. Appl. No. 11/722,589, filed Jun. 22, 2007, Balthasart, et al.
U.S. Appl. No. 11/722,598, filed Jun. 22, 2007, Strebelle, et al.
U.S. Appl. No. 11/722,607, filed Jun. 22, 2007, Strebelle, et al.
U.S. Appl. No. 12/304,297, filed Dec. 11, 2008, Balthasart, et al.
U.S. Appl. No. 12/304,329, filed Dec. 11, 2008, Strebelle, et al.
U.S. Appl. No. 12/304,379, filed Dec. 11, 2008, Balthasart, et al.

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