C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
23/400, 260/662.
C07C 21/06 (2006.01) B01D 3/06 (2006.01) B01J 12/00 (2006.01) C07C 17/25 (2006.01)
Patent
CA 1300645
HOE 87/F 902J Abstract of the disclosure A process for the production of vinyl chloride through thermal cracking of 1,2-dichloroethane. The hot, vinyl chloride-containing gases leaving the cracking furnace heat liquid 1,2-dichloroethane in a first container to the boiling point or to its immediate vicinity, and the 1,2-dichloroethane is transferred into a second container in which it is partly evaporated under a lower pressure than in the first container. The evap- orated 1,2-dichloroethane is fed into the cracking fur- nace, and the nonevaporated 1,2-dichloroethane is fed back into the first container. By supplying fresh, optionally prewarmed 1,2-dichloroethane into the second container, the amount of product evaporated therein is replaced, the prewarming advantageously being regulated through the level of the liquid 1,2-dichloroethane in the second container. The prewarming of the 1,2-dichloroethane can take place in the convection zone of the cracking fur- nace or by means of a temperature-control medium, for example steam, which has been heated in the convection zone of the cracking furnace. Compared to processes ac- cording to the prior art, higher cracking conversions and a more favorable energy utilization are achieved.
548965
Frohlich Walter
Krumbock Reinhard
Link Gerhard
Prantl Georg
Schaffelhofer Iwo
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Uhde Gmbh
Vinnolit Monomer Gmbh & Co. Kg
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