| 摘要 |
Process and apparatus for producing ethylenically unsaturated halogenated hydrocarbons The invention relates to a process and an apparatus for preparing ethylenically unsaturated halogenated hydrocarbons, preferably vinyl chloride by thermal dissociation of 1,2-dichloroethane, using physical or chemical measures which initiate the dissociation reaction. The process/apparatus described makes it possible to increase the amount produced using dissociation reactors of a given size considerably. Use is made here of initiating measures to increase the heat flux through the wall of the reaction tube and at the same time the feed stream and the heating power of the reaction furnace are increased so that the conversion of the reaction is not significantly increased compared to processes without use of initiating measures. To be able to continue to operate the process economically despite the reduction in the reaction temperature, the process parameters have to be set so that at least 50% of the amount of feed used are vaporized by means of the sensible heat content of the reaction mixture leaving the reaction zone. |
