1,1,1,2-四氯-2,2-二氟乙烷精制工艺流程的模拟与优化  

Simulation and Optimization of the Refining Process of 1,1,1,2-Tetrachloro-2,2-difluoroethane

作　　者：吴高胜 宗睿 李瑜哲 WU Gaosheng;ZONG Rui;LI Yuzhe(Shanghai Research Institute of Chemical Industry Co.,Ltd.,Shanghai 200062,China)

机构地区：[1]上海化工研究院有限公司,上海200062

出　　处：《有机氟工业》2022年第2期1-4,48,共5页Organo-Fluorine Industry

基　　金：上海功能阻燃材料工程技术研究中心(项目编号19DZ2253700)。

摘　　要：1,1,1,2-四氯-2,2-二氟乙烷(F112A)是一种含氟中间体,由1,2,2-三氯-1,1-二氟乙烷(F122)经氯化反应制得,反应液可通过精馏工艺进行纯化,得到较高纯度的F112A产品,进一步用于制备三氟乙酸产品。通过Aspen Plus对现有F112A精馏塔进行了模拟,在理论板数为50块、回流比为3.3、塔顶采出率为30%、进料位置为第18块塔板的条件下,精馏塔釜F112A产品质量分数的实际值与模拟值分别为99.92%和99.91%,模型吻合度较高。此外,通过灵敏度分析考察了进料板位置与再沸器热负荷的关系,当进料位置处于第22块板时,再沸器热负荷最小值为41.4kW,能耗可降低6.3%。1,1,1,2-Tetrachloro-2,2-difluoroethane(F112 A) is a fluorine-containing intermediate, which is prepared by chlorination of 1,2,2-trichloro-1,1-difluoroethane(F122). The reaction solution can be purified by rectification to obtain high-purity F112 A product, further is used to prepare trifluoroacetic acid. In this paper, Aspen Plus is used to simulate the F112 A distillation column. Under the conditions of 50 theoreticalplates, a reflux ratio of 3.3, a distillate to feed ratio of 30%, and a feed position of 18 th plates, the actual and simulated values of F112 A in the distillation column are 99.92% and 99.91%, and the model is in good agreement. When the feed plate is the 22 nd plate, the minimum heat load of the reboiler is 41.4 kW, and the energy consumption can be reduced by 6.3%.

关 键 词：1 1 1 2-四氯-2 2-二氟乙烷 含氟中间体 Aspen Plus 灵敏度分析 

分 类 号：TQ222.23[化学工程—有机化工]