Butadiene chlorination process

Details Butadiene chlorination process Butadiene chlorination process

C - Chemistry, Metallurgy

07

C

260/662.2

C07C 21/04 (2006.01) C07C 17/02 (2006.01)

Patent

CA 1107303

ABSTRACT OF THE DISCLOSURE An improved process for the continuous chlori- nation in vapor phase of butadiene to a mixture of dichlorobutenes at a temperature about 90-250°C, wherein chlorine is premixed with a portion of butadiene and introduced at one end of a tubular reactor, while the remainder of the butadiene, which is used in a large excess, is introduced at one or more points downstream from the point of introduction of the chlorine-butadiene mixture, the temperature and volume of this additional butadiene being sufficient to effectively cool the reacting mixture so that the maximum temperature in the reactor does not exceed about 250°C but does not fall downstream from the butadiene injection point below about 130°C.

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