| 摘要 |
Production of a mixture of dichlorobutenes by continuous chlorination in vapor phase of butadiene to a mixture of dichlorobutenes at a temperature about 90-250 DEG C, wherein chlorine is premixed with a portion of butadiene and introduced in 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 the maximum temperature in the reactor does not exceed about 250 DEG C but does not fall downstream from the butadient injection point below about 130 DEG C. |
