C3选择性加氢能量耦合催化精馏结构与分析

doi:10.3969/j.issn.0438-1157.2014.01.031

化工学报 ›› 2014, Vol. 65 ›› Issue (1): 244-250.DOI: 10.3969/j.issn.0438-1157.2014.01.031

C₃选择性加氢能量耦合催化精馏结构与分析

田禾, 罗祎青, 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:2013-07-01 修回日期:2013-11-25 出版日期:2014-01-05 发布日期:2014-01-05
通讯作者: 袁希钢
作者简介:田禾（1989-），女，硕士研究生。
基金资助:
国家重点基础研究发展计划项目（2010CB720500）；国家自然科学基金项目（21176178）；天津市科技支撑计划重点项目（11ZCKFGX02400）。

Configuration and analysis of thermally coupled catalytic distillation for C₃ alkyne selective hydrogenation

TIAN He, LUO Yiqing, YUAN Xigang

State Key Laboratory of Chemical Engineering (Tianjin University), Tianjin 300072, China

Received:2013-07-01 Revised:2013-11-25 Online:2014-01-05 Published:2014-01-05
Supported by:
supported by the National Basic Research Program of China (2010CB720500)，the National Natural Science Foundation of China (21176178) and the Key Projects in the National Science & Technology Pillar Program of Tianjin (11ZCKFGX02400).

摘要/Abstract

摘要： 提出了一种C₃选择性加氢能量耦合催化精馏新工艺，首先将催化精馏构件放置在丙烯精馏塔的提馏段，再将丙烯塔与脱乙烷塔通过气液流股连接成热耦合结构。与传统加氢工艺相比，能量耦合催化精馏工艺通过分离和加氢反应的结合使丙炔、丙二烯加氢过程的选择性得到较大幅度的提高，并通过热量耦合消除丙烯在脱乙烷塔内的返混，从而降低分离能耗。采用Aspen Plus化工流程模拟软件对该流程进行模拟。模拟结果表明，能量耦合催化精馏工艺可以使丙烯收率提高0.74%～2.19%，年度冷剂费用降低2.44%～3.61%。同时，热量耦合催化精馏工艺对于重质裂解原料油具有更好的适用性。

关键词: 计算机模拟, 反应精馏, 系统工程

Abstract: A novel process, thermally coupled catalytic distillation for selective hydrogenation of C₃ alkyne into alkene, was proposed. Methylacetylene and propadiene were separated from propylene in propylene column, and converted into propylene at the same time by catalytic hydrogenation. Deethanizer and propylene distillation were thermally coupled by liquid and vapor streams. The proposed process had two advantages: reactive distillation can raise the selectivity of hydrogenation effectively; thermally coupled distillation columns could avoid propylene backmixing in deethanizer and then save energy. Simulation of the process was performed by using Aspen Plus software. Propylene yield increased by 0.74%—2.19%. At the same time, the annual cost for refrigeration was saved by 2.44%—3.61%. The simulation also showed that the novel process was especially suitable for heavy cracking feedstock.

Key words: computer simulation, reactive distillation, systems engineering

中图分类号:

TQ021.8

田禾, 罗祎青, 袁希钢. C₃选择性加氢能量耦合催化精馏结构与分析[J]. 化工学报, 2014, 65(1): 244-250.

TIAN He, LUO Yiqing, YUAN Xigang. Configuration and analysis of thermally coupled catalytic distillation for C₃ alkyne selective hydrogenation[J]. CIESC Journal, 2014, 65(1): 244-250.

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C₃选择性加氢能量耦合催化精馏结构与分析

Configuration and analysis of thermally coupled catalytic distillation for C₃ alkyne selective hydrogenation

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