由于市场需求减少,在保证产品质量的前提下,对德国吉玛公司设计生产的8万吨/年连续聚酯装置进行降负荷生产。通过工艺参数的调整,浆料总量比降低到1.66,酯化温度降低8℃~10℃,压力降低35kPa~40kPa,停留时间不变或增加,预缩聚Ⅱ的液位降低到20%,熔体产量由360t/d降低至156t/d。 Due to the decrease of market demand, under the precondition of ensuring the product quality, the 80,000 ton / year continuous polyester plant designed and manufactured by the German Gemma Company was reduced in load. Through the adjustment of process parameters, the total slurry ratio is reduced to 1.66, the esterification temperature is reduced by 8 ℃ ~ 10 ℃, the pressure is reduced by 35kPa ~ 40kPa, the residence time is unchanged or increased, the level of pre-polycondensation Ⅱ is reduced to 20% Body production decreased from 360t / d to 156t / d.