二氯二氢硅反歧化反应精馏工艺的模拟分析与控制  

Simulation analysis and control of reactive distillation process of dichlorosilane anti-disproportionation

作　　者：李晨晨 陆平[2,3] 曹俊雅[1] 华超[2,3] 白芳[2,3] LI Chen-chen;LU Ping;CAO Jun-ya;HUA Chao;BAI Fang(School of Chemistry and Environmental Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China;Key Laboratory of Green Process Engineering,Institute of Process Engineering,Chinese Academy of Science,Beijing 100190,China;Innovation Academy for Green Manufacture,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京100083 [2]中国科学院过程工程研究所绿色过程与工程重点实验室,北京100190 [3]中国科学院绿色过程制造创新研究院,北京100190

出　　处：《天然气化工—C1化学与化工》2021年第3期88-93,106,共7页Natural Gas Chemical Industry

基　　金：国家重点研发计划(2019YFC1907600);中国科学院洁净能源先导科技专项资助(XDA21030600)。

摘　　要：应用Aspen plus软件对二氯二氢硅反歧化反应精馏工艺进行了模拟,对反应精馏工艺进行了操作参数优化,在最佳条件下以年度总费用为依据对固定床工艺和反应精馏工艺设备投资和能耗进行了分析,进一步在Aspen dynamics软件下模拟了进料流量±5%波动及组成变化的扰动下各运行参数的变化。结果表明,产品中三氯氢硅(TCS)质量分数可达99%,模拟结果与工艺数据良好吻合且误差不超过5%。确定的最佳优化参数中回流比为6,压力140 kPa,STC/DCS的进料物质的量之比为1.04,理论塔板数为39。相比固定床工艺,反应精馏工艺年度操作费用可降低近41×10^(4)元(3.5%)。动态响应分析表明带回流比控制器的结构可以有效地控制产品纯度和较快恢复运行平衡。Using Aspen plus software,the reactive distillation process of dichlorosilane anti-disproportionation was simulated,and the operating parameters of the process were optimized.Under the optimal conditions,the equipment investment and energy consumption of the fixed bed process and reactive distillation process were analyzed based on the total annual cost.The response of various operating parameters after feed flow(±5%)and composition changes were further simulated by Aspen dynamics software.The results show that the mass fraction of trichlorosilane(TCS)in the product can reach 99%,the simulation results are in good agreement with the actual data and the error is less than 5%.In the optimized parameters,the reflux ratio is 6,the pressure is 140 kPa,the feed material molar ratio(STC/DCS)is 1.04,and the theoretical plate number is 39.Compared with the fixed bed process,the annual operating cost of the reactive distillation process can be reduced by about 41×10^(4) yuan(3.5%).The dynamic response analysis shows that the process with reflux ratio controller can effectively control the product purity and quickly restore the operating balance.

关 键 词：二氯二氢硅 反歧化 反应精馏 动态模拟 

分 类 号：TQ127.2[化学工程—无机化工] TQ110.6