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.
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