阳离子可染聚酯生产运行问题分析及优化方案

Analysis and Optimization of Cationic Dyeable Polyester Production and Operation

以对苯二甲酸(PTA)、乙二醇(EG)与间苯二甲酸乙二醇酯-5-磺酸钠(SIPE)直接酯化合成阳离子染料可染聚酯(CDP)的工艺路线为出发点,讨论了在实际生产中所遇到的工艺、产品问题及解决方法,并对可能出现的问题进行了工艺优化。结果表明:过滤SIPE溶液中的自聚粒子、提高SIPE溶液注入后的分散效果、缩短熔体与高温管道的接触时间等均对产品的性能有较大提升。

Based on the process route of direct esterification of PTA, EG and SIPE to synthesize cationicdyeable polyester(CDP), the process, product problems and solutions in practical production were discussed, and the possible problems were optimized. The results show that the properties of the product aregreatly improved by filtering the self-polymerized particles in SIPE solution, improving the dispersion effectof SIPE solution after injection, and shortening the contact time between melt and high temperature pipe.