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现代化工  2018, Vol. 38 Issue (5): 205-209,211    DOI: 10.16606/j.cnki.issn0253-4320.2018.05.047
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煤基含氮合成气一步法制二甲醚工艺的模拟与优化
吴红梅1, 郭宇1, 吕兴旺2, 陈强强1, 殷慧敏3
1. 辽宁工业大学化学与环境工程学院, 辽宁 锦州 121001;
2. 鞍山七彩化学股份有限公司, 辽宁 鞍山 114000;
3. 临沂市产品质量监督检验所, 山东 临沂 276007
Simulation and optimization of one-step synthesis of dimethyl ether from coal-based nitrogen-containing syngas
WU Hong-mei1, GUO Yu1, LV Xing-wang2, CHEN Qiang-qiang1, YIN Hui-min3
1. School of Chemical and Environmental Engineering, Liaoning University of Technology, Jinzhou 121001, China;
2. Anshan Hifichem Co., Ltd., Anshan 114000, China;
3. Linyi Institute of Product Quality Supervision & Inspection, Linyi 276007, China
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摘要 利用Aspen Plus化工流程模拟软件对煤基含氮合成气一步法合成二甲醚的工艺进行了模拟与优化,结合二甲醚合成的反应动力学方程选择了平推流反应器模型,探讨了反应压力、反应温度对二甲醚产量、CO转化率和产物分布的影响,并通过灵敏度分析对其进行了优化。研究了精馏塔的回流比、理论板数和进料位置等因素对二甲醚吸收和精馏过程的效果和能耗影响,得到了高纯度、低能耗二甲醚生产的最优操作条件。
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吴红梅
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陈强强
殷慧敏
关键词:  二甲醚  含氮合成气  Aspen Plus模拟  优化    
Abstract: One-step process for synthesis of dimethyl ether (DME) from coal-based nitrogen-containing syngas is simulated and optimized by Aspen Plus chemical process simulation software.A plug flow reactor model is selected for the synthesis of dimethyl ether according to the kinetic equations.The effects of reaction temperature and pressure on the production of DME,conversion rate of CO and products distribution are investigated and the operation parameters are optimized through sensitivity analysis.In the separation and purification system,DME is set as the component dividing point to separate products.The influences of the using amount of absorbent in absorption tower,reflux ratio,the number of theoretical plate and the feeding position in distillation column on the efficiency and energy consumption of DME absorption and distillation process are studied.The optimal operating conditions are obtained for low energy consumption synthesis of high pure DME.
Key words:  dimethyl ether    nitrogen-containing syngas    Aspen Plus simulation    optimization
收稿日期:  2017-10-11      修回日期:  2018-03-08           出版日期:  2018-05-20
TQ028.31  
基金资助: 国家自然科学基金项目(21601075);辽宁省自然科学基金项目(2015020249,20170540435)
通讯作者:  郭宇(1981-),男,博士,教授,研究方向为化工工艺设计,通讯联系人,guoyulnut@163.com。    E-mail:  guoyulnut@163.com
作者简介:  吴红梅(1979-),女,博士,副教授,研究方向为化工工艺优化及模拟,wuhongmei@lnut.edu.cn
引用本文:    
吴红梅, 郭宇, 吕兴旺, 陈强强, 殷慧敏. 煤基含氮合成气一步法制二甲醚工艺的模拟与优化[J]. 现代化工, 2018, 38(5): 205-209,211.
WU Hong-mei, GUO Yu, LV Xing-wang, CHEN Qiang-qiang, YIN Hui-min. Simulation and optimization of one-step synthesis of dimethyl ether from coal-based nitrogen-containing syngas. Modern Chemical Industry, 2018, 38(5): 205-209,211.
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http://www.xdhg.com.cn/CN/10.16606/j.cnki.issn0253-4320.2018.05.047  或          http://www.xdhg.com.cn/CN/Y2018/V38/I5/205
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