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化工学报  2014 

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, PP. 244-250

Keywords: 计算机模拟,反应精馏,系统工程

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Abstract:

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AspenPlus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。

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