Optimization of mixed gas freeze dehydration process in polyvinyl chloride production
Process optimization were carried out to address the problems in the mixed gas freeze de-hydration process in polyvinyl chloride production,including the closed reuse of acetylene condensate,the combination of a two-stage demister consisting of a tube bundle demister and a bed demister,multi-point pressure monitoring technology,and the application of automatic water analyzer.After the imple-mentation of the above optimization measures,the water content in the mixed gas after dehydration was stably controlled below 6×10-4.Thus,the corrosion of the conversion system was reduced,the opera-tion was stable,and the automation was improved.
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