C3选择性加氢热耦合催化精馏流程模拟.pdf

第67 卷 第2 期 化 工 学 报 Vol.67 No.2 February 2016 2016 年2 月 CIESC Journal ·580 · C3 选择性加氢热耦合催化精馏流程模拟 王易卓，罗祎青，钱行，袁希钢 （化学工程联合国家重点实验室（天津大学），天津 300072 ） 摘要：针对C 选择性加氢过程中冷剂费用过高问题提出将选择性加氢催化反应器设置在脱乙烷精馏塔的提馏段， 3 并通过原流程的3 个精馏塔的不同热耦合方式所构成的3 种热耦合催化精馏结构；对三热耦合催化精馏结构分别 进行严格模拟和评价，表明通过分离和加氢反应的结合增加了加氢反应的转化率，并通过热耦合降低了分离能耗， 年度总费用降低显著。模拟结果表明，3 种方案的年度总费用节约效果分别为4.107% 、6.420%和10.337%。 关键词：C3 选择性加氢；反应精馏；热耦合精馏塔 DOI ：10.11949/j.issn.0438-1157 中图分类号：TQ 028.8 文献标志码：A 文章编号：0438—1157 （2016 ）02—0580—08 Simulation of thermally coupled catalytic distillation flowsheets for C3 alkyne selective hydrogenation WANG Yizhuo, LUO Yiqing, QIAN Xing, YUAN Xigang (State Key Laboratory of Chemical Engineering(Tianjin University), Tianjin 300072, China) Abstract: In order to reduce effectively the refrigeration cost for the process of selective hydrogenation of C3 alkyne into alkene, three novel thermally coupled catalytic distillation flowsheets are proposed. In the proposed flowsheets, the reactor for catalytic hydrogenation of C3 components is settled in the lower part of the deethanizer in the original process and the three columns are thermally coupled in different ways. The proposed flowsheets are rigorously simulated and evaluated. The results show that, compared with original process, the proposed processes raise the convert ratio of hydrogenation, and at the same time, significant energy saving can be achieved by the thermal couplings, leading to