Reactive-Distillation Process for Direct Hydration of Cyclohexene to Produce Cyclohexanol
Reactive-Distillation Process for Direct Hydration of Cyclohexene to Produce Cyclohexanol
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DOI：
10.1021/ie404226m
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发表时间：
2014-04
影响因子：
4.2
通讯作者：
Bor-Chang Chen;Bor-Yih Yu;Yuanbo Lin;Hsiao-Ping Huang;I. Chien
中科院分区：
文献类型：
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作者：
Bor-Chang Chen;Bor-Yih Yu;Yuanbo Lin;Hsiao-Ping Huang;I. Chien
环己醇是合成尼龙中间体和增塑剂的重要前体。本文研究了环己烯与水直接水合制环己醇的反应精馏工艺。需要设计过量水以经济地将环己烯转化率提高到99.9%。所提出的流程的优化设计还利用了二元环己醇-水共沸物的自然液-液分裂。还考虑了具有环己烷杂质的实际新鲜环己烯进料。这种惰性物质被设计为在反应蒸馏塔顶部的倾析器的有机出口流中离开系统。建议的设计流程的再沸器负荷要求进行了比较与现有的公开文献中的过程。据发现，通过使用这种设计可以实现显着的节能。
Cyclohexanol is an important precursor in synthesizing intermediates of Nylons and also plasticizers. In this paper, a plantwide reactive-distillation process for the production of cyclohexanol by direct hydration of cyclohexene with water has been studied. Design with excess water is needed to economically increase conversion of cyclohexene to 99.9%. The optimal design of the proposed flowsheet also makes use of the natural liquid–liquid splitting of the binary cyclohexanol–water azeotrope. Realistic fresh cyclohexene feed with impurity of cyclohexane was also considered. This inert is designed to leave the system in the organic outlet stream of a decanter on top of the reactive-distillation column. The reboiler duty requirement of the proposed design flowsheet is compared with existing processes in open literature. It is found that significant energy savings can be realized by using this design.