
氯乙烯精馏过程的ASPEN PLUS模拟分析
Application of ASPEN PLUS in vinyl chloride rectification
应用化工流程模拟软件ASPEN PLUS对聚氯乙烯生产工艺中氯乙烯精馏过程进行模拟。通过比较,选用NRTL方程来计算液相活度系数,所得模拟结果与实际生产值基本吻合。对低沸塔和高沸塔的操作变量进行了灵敏度分析,得到高低沸塔适宜进料位置、回流比和馏出比分别是8和2,0.5和0.8以及0.93和0.25。
ASPEN PLUS has been used to simulate the vinyl chloride rectification process for producing polyvinyl chloride. For comparison, the NRTL thermodynamic model was selected to calculate the activity coefficients. The simulation results obtained showed good agreement with the plant data. In addition, the operating parameters of the highboiler tower and the lowboiler tower were optimized based on sensitivity analysis. The optimized data are feed location 8, 2, reflux ratio 0.5, 0.8 and distillate to feed ratio 0.93, 0.25 respectively.
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