PVA平均聚合度波动因素分析及优化控制

针对聚乙烯醇 (PVA)聚合反应过程中 ,平均聚合度波动的实际问题 ,在对聚合反应工艺、反应机理进行理论分析的基础上 ,找出了影响平均聚合度波动的主要因素 ,并逐一分析了对平均聚合度影响的情况 ,在理论和实验基础上找出了在多品种PVA生产中各主要因素变化对平均聚合度变化的规律 ,提出了包括运用先进仪表控制手段在内的优化控制措施和处理办法

Waving factors' analysis of PVA average degrees of polymerization and therefor optimizing control

In the production of poly (vinyl alcohol)(PVA),there is a waving problem of average degrees of polymerization.On the basis of theoretic analysis of polymerization process and reaction mechanism,the major factors that have influence on average degree of polymerization are found out and their influence degrees are analyzed one by one.Combining productive practice,the waving rules of average degrees of polymerization with the change of different influence factors in the production of multi type PAVs have been seized and the optimizing control measures and treating methods,including the use of advanced control instruments,are proposed.