萃取精馏制取无水乙醇过程不同节能方案的对比

doi:10.16085/j.issn.1000-6613.2017-1621

化工进展 ›› 2018, Vol. 37 ›› Issue (05): 2016-2022.DOI: 10.16085/j.issn.1000-6613.2017-1621

萃取精馏制取无水乙醇过程不同节能方案的对比

林子昕¹, 安星¹, 安维中¹, 朱建民²

1 中国海洋大学化学化工学院, 山东青岛 266100;
2 辽宁奥克化学集团, 辽宁辽阳 111003

收稿日期:2017-08-02 修回日期:2017-11-16 出版日期:2018-05-05 发布日期:2018-05-05
通讯作者: 安维中,教授,研究方向为过程系统工程。
作者简介:林子昕(1982-),女,副教授。
基金资助:
国家自然青年科学基金项目（21306179）。

Simulation and comparison of different energy saving schemes in extractive distillation process of ethanol-water system

LIN Zixin¹, AN Xing¹, AN Weizhong¹, ZHU Jianmin²

1 Department of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, Shandong, China;
2 Liaoning Oxiranchem Group, Liaoyang 111003, Liaoning, China

Received:2017-08-02 Revised:2017-11-16 Online:2018-05-05 Published:2018-05-05

摘要/Abstract

摘要： 以乙二醇为萃取剂从乙醇-水体系制取无水乙醇产品。基于流程模拟软件，对常规萃取精馏过程以及双效萃取精馏、分割式热泵萃取精馏、隔壁塔萃取精馏和内部热集成萃取精馏等4种节能工艺进行模拟及优化。设计规定如下：无水乙醇中乙醇质量分数不低于99.5%，回收的萃取剂中乙二醇质量分数不低于99.9%，废水中的质量分数为99.5%以上。在相同的设计基础和设计要求下，获得各流程最优的操作参数，并从节能效果及经济性分析对比4种节能工艺。结果显示：相比于常规萃取精馏过程，虽然内部热集成萃取精馏工艺可将能耗降低14.1%，节能效果最佳，但双效萃取精馏过程总成本最低，年均总成本可降低7.2%，是最具经济性的工艺过程。本研究为乙醇-水体系萃取精馏分离工艺的工业化提供了设计基础和理论依据。

关键词: 无水乙醇, 萃取精馏, 模拟, 优化, 节能

Abstract: Anhydrous ethanol was produced from the ethanol-water mixture using ethylene glycol as the extractant. Using the process simulation software,the conventional extractive distillation process and four different types of energy saving technologies were simulated and optimized,including double-effect distillation,vapor recompression distillation,dividing wall column distillation and internally heat integrated distillation. The design specification was as follows:the purity of ethanol should be no less than 99.5%,the purity of recovered ethylene glycol should be no less than 99.9%,and the purity of waste water should be greater than 99.5%. Under the same design basis and requirements,the optimum operating parameters of each process were obtained,and different processes were compared from the energy saving effect and economic analysis. The results revealed that although the internally heat integrated distillation technology was the most energy efficient process reducing the energy consumption by 14.1% compared with the conventional extractive distillation process,the most economic technology was double-effect extractive distillation process decreasing the total annual cost by 7.2%. This study provides the theoretical basis and design parameters for the industrialization of the extractive distillation process to produce anhydrous ethanol from the ethanol-water system.

Key words: anhydrous ethanol, extraction distillation, simulation, optimization, energy savings

中图分类号:

TQ021.8

林子昕, 安星, 安维中, 朱建民. 萃取精馏制取无水乙醇过程不同节能方案的对比[J]. 化工进展, 2018, 37(05): 2016-2022.

LIN Zixin, AN Xing, AN Weizhong, ZHU Jianmin. Simulation and comparison of different energy saving schemes in extractive distillation process of ethanol-water system[J]. Chemical Industry and Engineering Progress, 2018, 37(05): 2016-2022.

参考文献

[1] KUMAR S,SINGH N,PRASAD R.Anhydrous ethanol:a renewable source of energy[J].Renewable & Sustainable Energy Reviews,2010,14(7):1830-1844.
[2] RAVAGNANI M A S S,REIS M H M,MACIEL FILHO R.Anhydrous ethanol production by extractive distillation:a solvent case study[J].Process Safety & Environmental Protection,2010,88(1):67-73.
[3] 马晓建,吴勇,牛青川.无水乙醇制备的研究进展[J].现代化工,2005,25(1):26-29. MA Xiaojian,WU Yong,NIU Qingchuan.Progress in manufacture of anhydrous ethanol[J].Modern Chemical Industry,2005,25(1):26-29.
[4] 方凯,吴淑晶.盐效应制取无水乙醇的研究现状及发展前景[J].广东化工,2014,41(7):97-99. FANG Kai,WU Shujing.The research status and prospects of extracting dehydrated ethanol[J].Guangdong Chemical Industry,2014,41(7):97-99.
[5] FIGUEROA J J,LUNELLI B H,FILHO R M.Improvements on anhydrous ethanol production by extractive distillation using ionic liquid as solvent[J].Procedia Engineering,2012,42:1016-1026.
[6] LI Qunsheng,ZHU Wei,WANG Haichuan,et al.Isobaric vapor-liquid equilibrium for the ethanol+water+1,3- dimethylimidazolium dimethyl-phosphate system at 101.3 kPa[J]. Journal of Chemical Engineering Data,2012,57:696-700.
[7] ALCANTARA-AVILA J R, KANO M,HASEBE S.Environmental and economic optimization of distillation structures to produce anhydrous ethanol[J].Computer Aided Chemical Engineering,2012,30:712-716.
[8] 夏珊珊,裘兆蓉,叶青.隔离壁精馏塔萃取精馏制无水乙醇[J].江苏工业学院学报,2009,21(1):34-37. XIA Shanshan,QIU Zhaorong,YE Qing.Study of extractive distillation of ethanol and water using dividing wall column[J]. Journal of Jiangsu Poly Technic University,2009,21(1):34-37.
[9] 王洪海,李春利,方静,等.加盐萃取精馏制取无水乙醇过程的模拟[J].石油化工,2008,37(3):258-261. WANG Honghai,LI Chunli,FANG Jing,et al.Simulation of salt extractive distillation for preparation of anhydrous ethanol[J].Petrochemical Technology,2008,37(3):258-261.
[10] 朱平,冯霄,李珊.分割式热泵精馏的研究及其分割点的确定[J]. 西安交通大学学报,1998,32(1):93-95. ZHU Ping,FENG Xiao,LI Shan.Research on separate heat-pump distillation and determination of the separate point[J].Journal of Xi'an Jiaotong University,1998,32(1):93-95.
[11] 王以清.双效精馏流程的节能分析[J].化学工程师,2002,92(5):47-49. WANG Yiqing.Analysis of an energy-saving on distillation flows of two effect[J].Chemical Engineer,2002,92(5):47-49.
[12] FERRE J A,CASTELLS F,FLORES J.Optimization of a distillation column with a direct vapor recompression heat pump[J].Industrial & Engineering Chemistry Process Design and Development,1985,24(1):128-132.
[13] 龚超,余爱平,罗祎青,等.完全能量耦合精馏塔的设计、模拟与优化[J].化工学报,2012,63(1):177-184. GONG Chao,YU Aiping,LUO Yiqing,et al.Design,simulation and optimization of fully thermally coupled distillation column[J].CIESC Journal,2012,63(1):177-184.
[14] 赵雄,罗祎青,闫兵海,等.内部能量集成精馏塔的模拟研究及其节能特性分析[J].化工学报,2009,60(1):142-150. ZHAO Xiong,LUO Yiqing,YAN Binghai,et al.Simulation study of internally heat-integrated distillation column and its characteristics for energy saving[J]. CIESC Journal,2009,60(1):142-150.
[15] 李鑫钢,李学刚,李燕,等.乙醇-水体系双效精馏过程模拟[J].化工进展,2009,28(s1):374-377. LI Xingang,LI Xuegang,LI Yan,et al.Simulation of double-effect distillation process in ethanol-water system[J].Chemical Industry and Engineering Progress,2009,28(s1):374-377.
[16] 朱平,冯霄.分割式热泵精馏流程的优化设计及运行调优[J]. 化学工程,2004,32(6):10-14. ZHU Ping,FENG Xiao.Optimal design and operation of separate heat pump distillation[J]. Chemical Engineering,2004,32(6):10-14.
[17] 余爱平.完全热耦合精馏塔及其节能效果的模拟研究[D]. 天津:天津大学,2010. YU Aiping.Simulation of fully thermally coupled distillation column and its energy efficiency[D]. Tianjin:Tianjin University,2010.
[18] 许亚伟.考虑水力学的内部热集成反应精馏塔设计[D].青岛:中国海洋大学,2015. XU Yawei.Design of the internally heat integrated reactive distillation column based on hydraulic analysis[D].Qingdao:Ocean University of China,2015.
[19] 屈一新.化工过程数值模拟及软件[M].北京:化学工业出版社,2006. QU Yixin.Numerical simulation and software of chemical process[M].Beijing:Chemical Industry Press,2006.
[20] JANA A K,MANE A.Heat pump assisted reactive distillation:wide boiling mixture[J].AIChE J.,2011,57(11):3233-3237.
[21] TURTON R,BAILIE R C,WHITING W B,et al.Analysis synthesis and design of chemical processes[M].Prentice-Hall International Series in the Physical and Chemical Engineering Sciences,2012.
[22] DOUGLAS J M. Conceptual design of chemical processes[M]. New York:McGraw-Hill,1998.
[23] LUO H,BILDEA C S,KISS A A.Novel heat-pump-assisted extractive distillation for bioethanol purification[J].Industrial & Engineering Chemistry Research,2015,54(7):2208-2213.
[24] AN D,CAI W,XIA M,et al.Design and control of reactive dividing-wall column for the production of methyl acetate[J]. Chemical Engineering & Processing,2015,92:45-60.

萃取精馏制取无水乙醇过程不同节能方案的对比

Simulation and comparison of different energy saving schemes in extractive distillation process of ethanol-water system

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	李梦圆, 郭凡, 李群生. 聚乙烯醇生产中回收工段第三、第四精馏塔的模拟与优化[J]. 化工进展, 2023, 42(S1): 113-123.
[2]	张瑞杰, 刘志林, 王俊文, 张玮, 韩德求, 李婷, 邹雄. 水冷式复叠制冷系统的在线动态模拟与优化[J]. 化工进展, 2023, 42(S1): 124-132.
[3]	王太, 苏硕, 李晟瑞, 马小龙, 刘春涛. 交流电场中贴壁气泡的动力学行为[J]. 化工进展, 2023, 42(S1): 133-141.
[4]	孙继鹏, 韩靖, 唐杨超, 闫汉博, 张杰瑶, 肖苹, 吴峰. 硫黄湿法成型过程数值模拟与操作参数优化[J]. 化工进展, 2023, 42(S1): 189-196.
[5]	王福安. 300kt/a环氧丙烷工艺反应器降耗减排分析[J]. 化工进展, 2023, 42(S1): 213-218.
[6]	陈匡胤, 李蕊兰, 童杨, 沈建华. 质子交换膜燃料电池气体扩散层结构与设计研究进展[J]. 化工进展, 2023, 42(S1): 246-259.
[7]	崔守成, 徐洪波, 彭楠. 两种MOFs材料用于O₂/He吸附分离的模拟分析[J]. 化工进展, 2023, 42(S1): 382-390.
[8]	王正坤, 黎四芳. 双子表面活性剂癸炔二醇的绿色合成[J]. 化工进展, 2023, 42(S1): 400-410.
[9]	徐若思, 谭蔚. C形管池沸腾两相流流场模拟与流固耦合分析[J]. 化工进展, 2023, 42(S1): 47-55.
[10]	张凤岐, 崔成东, 鲍学伟, 朱炜玄, 董宏光. 胺液吸收-分步解吸脱硫工艺的设计与评价[J]. 化工进展, 2023, 42(S1): 518-528.
[11]	孙玉玉, 蔡鑫磊, 汤吉海, 黄晶晶, 黄益平, 刘杰. 反应精馏合成甲基丙烯酸甲酯工艺优化及节能[J]. 化工进展, 2023, 42(S1): 56-63.
[12]	郭强, 赵文凯, 肖永厚. 增强流体扰动强化变压吸附甲硫醚/氮气分离的数值模拟[J]. 化工进展, 2023, 42(S1): 64-72.
[13]	邵博识, 谭宏博. 锯齿波纹板对挥发性有机物低温脱除过程强化模拟分析[J]. 化工进展, 2023, 42(S1): 84-93.
[14]	许友好, 王维, 鲁波娜, 徐惠, 何鸣元. 中国炼油创新技术MIP的开发策略及启示[J]. 化工进展, 2023, 42(9): 4465-4470.
[15]	李春利, 韩晓光, 刘加朋, 王亚涛, 王晨希, 王洪海, 彭胜. 填料塔液体分布器的研究进展[J]. 化工进展, 2023, 42(9): 4479-4495.