Application of purification technology for 1,1-dichloroethane from vinyl chloride distillation residue
The components of the distillation residue from the synthesis of vinyl chloride using calci-um carbide method were analyzed,and the technical principles and process flow for recovering and purif-ying vinyl chloride and 1,1-dichloroethane from the residue were elaborated in detail.The application effect of the device was also analyzed.The results showed that the mass fraction of vinyl chloride recovered from the distillation residue reached over 99.0％,and the mass fraction of 1,1-dichloroethane reached over 95.0％.The transformation of distillation residue from hazardous waste to by-products was achieved,and the cost of hazardous waste disposal was saved.
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