C3选择性加氢热耦合催化精馏流程模拟

doi:10.11949/j.issn.0438-1157.20151225

化工学报 ›› 2016, Vol. 67 ›› Issue (2): 580-587.DOI: 10.11949/j.issn.0438-1157.20151225

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

收稿日期:2015-07-30 修回日期:2015-10-22 出版日期:2016-02-05 发布日期:2016-02-05
通讯作者: 袁希钢
基金资助:
国家重点基础研究发展计划项目(2012CB720500)。

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

Received:2015-07-30 Revised:2015-10-22 Online:2016-02-05 Published:2016-02-05
Supported by:
supported by the National Basic Research Program of China (2012CB720500).

摘要/Abstract

摘要：

针对C₃ 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,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

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 a decrease in the total annual cost by 4.107%, 6.420% and 10.337% respectively for the three proposed flowsheets.

Key words: C₃ alkyne selective hydrogenation, reactive distillation, thermally coupled distillation

中图分类号:

TQ028.8

王易卓, 罗祎青, 钱行, 袁希钢. C₃选择性加氢热耦合催化精馏流程模拟[J]. 化工学报, 2016, 67(2): 580-587.

WANG Yizhuo, LUO Yiqing, QIAN Xing, YUAN Xigang. Simulation of thermally coupled catalytic distillation flowsheets for C₃ alkyne selective hydrogenation[J]. CIESC Journal, 2016, 67(2): 580-587.

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C₃选择性加氢热耦合催化精馏流程模拟

Simulation of thermally coupled catalytic distillation flowsheets for C₃ alkyne selective hydrogenation

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