连续式固相缩聚生产高粘度聚酯切片的技术与工艺

针对引进美国Ｂｅｐｅｘ公司制造的生产涤纶工业丝用高粘度聚酯切片的连续式固相缩聚系统，对切片的原料路线、预结晶后的结晶度、干燥后的含水、预热后的结晶度、净化器中停留时间、反应温度、反应时间等工艺控制要点及影响因素作了详细探讨。

THE TECHNOLOGY AND PROCESS OF CONTINUOUS SOLID STATE POLYCONDENSATION FOR PRODUCING HIGH VISCOSITY POLYESTER CHIPS

he key process control points and affecting factors of the continuous solid state polycondensation system manufactured by Bepex for producing high viscosity grade polyester chips for polyester industry yarn were introduced.The synthetic processes for raw chips ,the chip crystallinity after precrystallization the chip moisture content after drying,the chip crystallinity after preheating,the chip residence time in the purge screw,the chip reaction temperature and time,the oxygen content in the nitrogen as well as the dew point of nitrogen were discussed.