氯乙烯精馏工艺流程的模拟计算及技术改造  

Simulation and Revamp of Vinyl Chloride Distillation Process

作　　者：李群生[1] 于颖[1] 郭增昌[1,2] 

机构地区：[1]北京化工大学化工学院,北京100029 [2]特变电工新疆硅业有限公司,新疆乌鲁木齐830011

出　　处：《石油化工》2012年第7期820-824,共5页Petrochemical Technology

基　　金：国家自然科学基金资助项目(20476005);国家高技术研究发展计划项目(2006BA109B07-01);中国石油化工股份有限公司资助项目(X501021)

摘　　要：采用Aspen Plus化工流程模拟软件对250 kt/a聚氯乙烯装置的精馏过程进行模拟和优化,对回流比、进料位置及馏出比等操作参数进行灵敏度分析。模拟计算得到低沸塔和高沸塔的设计参数分别为:实际塔板数34和40、回流比2.0和0.8、进料位置第16和第14块塔板、馏出比0.1～0.3和0.8～0.9。以设计参数为基础,采用高效导向筛板对低沸塔和高沸塔进行改造,低沸塔能耗降低50%,冷凝水用量节省6.6 t/h;高沸塔能耗降低36%,冷凝水用量节省42 t/h;产品中氯乙烯的含量达99.99%(w)以上,改造效果良好。A vinyl chloride distillation process for 250 kt/a polyvinyl chloride installation adopting calcium carbide method was simulated and optimized using Aspen Plus software. Appropriate operation parameters such as feed position, reflux ratio and distillate ratio were obtained through sensitivity analysis. The design parameters for the low-boiler tower and high-boiler tower were calculated by computer simulation and the results were as follows： actual plate numbers of 34 and 40, reflux ratios of 2 and 0.8, feed positions of the sixteenth and fourteenth plates, and distillate ratios of 0.1-0.3 and 0.8-0.9, respectively. Based on the parameters, the low-boiler tower and high-boiler tower were revamped by employing efficient guide sieve trays. After the revamping, the energy consumption and cooling water consumption of the low-boiler tower reduced by 50% and 6.6 t/h respectively, while those of the high-boiler tower reduced by 36% and 42 t/h respectively. The mass fraction of the vinyl chloride in the products was above 99.99%.

关 键 词：氯乙烯 精馏 流程模拟 

分 类 号：TQ018[化学工程]