氯乙烯精馏过程的模拟与优化  

Simulation and Optimization of the Vinyl Chloride Rectification Process

作　　者：姚卫国[1] 郑瑞鹏[1] 刘勇营[1] 

机构地区：[1]浙江省化工研究院,浙江杭州310023

出　　处：《浙江化工》2017年第2期40-45,共6页Zhejiang Chemical Industry

摘　　要：利用Aspen Plus模拟软件对某厂电石法生产的氯乙烯精馏过程进行了建模与模拟,进料规模为20 m^3/h。选择NRTL物性方法,对低沸塔和高沸塔进行了模拟,模拟结果如下:低沸塔的塔板数为29块,进料位置第3块,回流比为5,操作压力为0.52~0.53 MPa,高沸塔的塔板数为41块,进料位置12块,回流比为0.6,操作压力0.26~0.28 MPa;利用灵敏度分析工具研究了进料位置、采出率、回流比三个因素对精馏过程的影响,对氯乙烯精馏过程进行了优化,结果表明:对于低沸塔,进料位置为3,塔板数为29,B/F为0.99,回流比为6;对于高沸塔,进料位置为12,塔板数为41,D/F为0.99,回流比为0.2。Aspen Plus simulation software was carried out to model and simulate VC distillation process. The feedstock was 20 m3/h. First distillation process was analyzed and selected NRTL property method,to model the low boiling and high boiling tower. The results showed： At the pressure of 0.52-0.53 MPa, the total stage of low boiling tower was 29 at the third feed stage with the reflux ratio of 5. To the high boiling tower, At the pressure of 0.26-0.28 MPa, the total stages were 41 at the feed stage12 with the reflux ratio0.6. The sensitivity analysis was used to study the feed stage, recovery rates and reflux ratio to the distillation process, the propose of which was to optimize the VCM distillation. The results as follows： to the low boiling tower, the total stages were 29 at the feed stage of 3 with the B/F 0.99, and the reflux ratio was 6;to the high boiling tower, the total stages were 41 at the feed stage of 12 with the D/F 0.99, and the reflux was 0.2.

关 键 词：氯乙烯精馏 ASPEN PLUS 模拟与优化 灵敏度分析 

分 类 号：TQ222.423[化学工程—有机化工]