Fault analysis and countermeasures of oxychlorination fixed-bed process
Utilizing hydrogen chloride generated from the cracking of 1,2-dichloroethane(EDC)in the oxychlorination reaction balance is a necessary link in the production process of vinyl chloride(VCM)by the ethylene process.This paper introduces the operational failures exposed during the recent production of the oxychlorination system of the 400 kt/a PVC plant,reflecting the problems that are difficult to avoid in the fixed-bed process itself.These problems have been analyzed and optimized for disposal.