Design and Control of Extraction Distillation for Dehydration of Tetrahydrofuran

被引：26

作者：

Fan, Zhidong ^{[1
]}

Zhang, Xubin ^{[1
]}

Cai, Wangfeng ^{[1
]}

Wang, Fumin ^{[1
]}

机构：

[1] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China

来源：

CHEMICAL ENGINEERING & TECHNOLOGY | 2013年 / 36卷 / 05期

关键词：

Control strategies; Dehydration; Extractive distillation; Tetrahydrofuran dehydration; HETEROGENEOUS AZEOTROPIC DISTILLATION; REACTIVE-DISTILLATION; METHANOL SEPARATION; BUTYL ACETATE; SYSTEM; ENTRAINER; SIMULATION; CARBONATE; DYNAMICS; COLUMNS;

D O I：

10.1002/ceat.201200611

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Design and control of an extractive distillation system for tetrahydrofuran (THF) dehydration with ethylene glycol as entrainer is investigated. The main module is a two-column system containing an extractive distillation column, whose top stream is the desired product THF, and an entrainer recovery column. Economic analysis with total annual cost as the objective function is developed. Two kinds of control strategies are explored for THF dehydration. The responses reveal that the control structure with fixed reflux ratio cannot maintain the bottom liquid level of the entrainer recovery column, while the control scheme with fixed reboiler heat duty/feed flow ratio exhibits good control performance in spite of large deviations in feed flow rate and feed composition.

引用

页码：829 / 839

页数：11

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