Method for the production of 1,2-dichloroethane

Details Method for the production of 1,2-dichloroethane Method for the production of 1,2-dichloroethane

2005-05-31

2005-05-31

Shippen, Michael L. (Department: 1621)

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

Organic compounds

Halogen containing

C570S220000, C570S245000

Reexamination Certificate

active

06900363

ABSTRACT:
A process for preparing 1,2-dichloroethane which comprises(A) feeding an ethane-containing feed gas stream into a dehydrogenation zone and dehydrogenating ethane to ethane to give a product gas stream comprising ethane, ethane and secondary constituents,(B) feeding the ethan- and ethene-containing dehydrogenation product gas stream as a single stream or a plurality of substreams, optionally after having separated off secondary constituents, into one or more chlorination zones, chlorinating ethene to 1,2-dichloroethane to give one or more product gas streams comprising 1,2-dichloroethane, ethane and possibly further secondary constituents, isolating 1,2-dichloroethane and one or more ethane-containing circulating gas streams and recirculating the ethane-containing circulating gas stream or streams to the ethane dehydrogenation.

REFERENCES:
patent: 3658933 (1972-04-01), Beard
patent: 3658934 (1972-04-01), Beard
patent: 3702311 (1972-11-01), Beard
patent: 3987119 (1976-10-01), Kurtz et al.
patent: 4172099 (1979-10-01), Severino
patent: 1 443 707 (1968-11-01), None
patent: 970961 (1964-09-01), None
patent: 95/07249 (1995-03-01), None
patent: 00/26164 (2000-03-01), None
Derwent Abst. 2000-365532/31.

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