萃取精馏分离苯/环己烷共沸体系的控制策略

doi:10.11949/j.issn.0438-1157.20150782

化工学报 ›› 2015, Vol. 66 ›› Issue (9): 3618-3632.DOI: 10.11949/j.issn.0438-1157.20150782

萃取精馏分离苯/环己烷共沸体系的控制策略

刘育良¹, 翟建¹, 李鲁闽¹, 王秋圆², 孙兰义¹

1 中国石油大学(华东)重质油国家重点实验室, 山东青岛 266580;
2 青岛碱业新材料科技有限公司, 山东青岛 266043

收稿日期:2015-06-01 修回日期:2015-07-06 出版日期:2015-09-05 发布日期:2015-09-05
通讯作者: 孙兰义
基金资助:
国家自然科学基金项目(21276279,21476261);中央高校基本科研业务费专项资金(14CX05030A,14CX06108A)。

Operation and control of extractive distillation for separation of azeotropic benzene/cyclohexane system

LIU Yuliang¹, ZHAI Jian¹, LI Lumin¹, WANG Qiuyuan², SUN Lanyi¹

1 State Key Laboratory of Heavy Oil Processing in China University of Petroleum, Qingdao 266580, Shandong, China;
2 Qingdao Soda Ash Industrial New Material and Technology Company Limited, Qingdao 266043, Shandong, China

Received:2015-06-01 Revised:2015-07-06 Online:2015-09-05 Published:2015-09-05
Supported by:
supported by the National Natural Science Foundation of China (21276279, 21476261) and Fundamental Research Funds for the Central Universities of Ministry of Education of China (14CX05030A, 14CX06108A).

摘要/Abstract

摘要：

将常规萃取精馏、差压热耦合萃取精馏以及隔壁塔萃取精馏技术应用于以糠醛为萃取剂的苯和环己烷共沸物分离过程。在稳态模型的基础上,利用Aspen Dynamics软件进行控制研究,对三工艺流程提出了若干控制策略。结果表明,对于常规萃取精馏过程,再沸器热负荷与进料量比值控制结构在降低控制过程超调量方面表现出明显优势;对于差压热耦合萃取精馏过程,带有压力-补偿控温策略的方案控制效果更佳;而对于隔壁塔,则选择了无隔板下方气液分离比控制的结构来作为较优的控制策略。

关键词: 萃取精馏, 差压热耦合, 隔壁塔, 共沸物, 控制

Abstract:

In this study, the performance of conventional extractive distillation, heat integrated pressure-swing extractive distillation, and extractive dividing wall column distillation is investigated for the separation of benzene and cyclohexane with furfural as entrainer. Based on steady state design, the dynamic control of these three systems is studied with assistance of Aspen Dynamics, and several control structures for each system are presented to handle the feed flow rate and feed composition disturbances. The dynamic simulation results reveal that, for the conventional extractive distillation process, control structure with reboiler duty being proportional to the feed flow rate shows its superiority when it comes to the feed disturbances. In the heat integrated pressure-swing extractive distillation process, the system is sensitive to the pressure. For this reason, pressure-compensated temperature control scheme is proposed based on another control structure, and its dynamic responses reveal that the feed disturbances can be objected effectively. For the extractive dividing wall column distillation process, control structure without vapor split ratio as a manipulated variable, which is easier for to be realized in industrial production and can maintain the product purities at their specifications, is chosen rather than the one with vapor split ratio.

Key words: extraction, dividing wall column, heat integrated pressure-swing, azeotrope, control

中图分类号:

TQ028.1

刘育良, 翟建, 李鲁闽, 王秋圆, 孙兰义. 萃取精馏分离苯/环己烷共沸体系的控制策略[J]. 化工学报, 2015, 66(9): 3618-3632.

LIU Yuliang, ZHAI Jian, LI Lumin, WANG Qiuyuan, SUN Lanyi. Operation and control of extractive distillation for separation of azeotropic benzene/cyclohexane system[J]. CIESC Journal, 2015, 66(9): 3618-3632.

参考文献 20

[1]	Zhu Z, Wang L, Ma Y, Wang W, Wang Y. Separating an azeotropic mixture of toluene and ethanol via heat integration pressure swing distillation [J]. Computers & Chemical Engineering, 2015, 76: 137-149.
[2]	Knapp J P, Doherty M F. Thermal integration of homogeneous azeotropic distillation sequences [J]. AIChE Journal, 1990, 36 (7): 969-984.
[3]	Lei Z, Li C, Chen B. Extractive distillation: a review [J]. Separation & Purification Reviews, 2003, 32 (2): 121-213.
[4]	Luyben W L, Chien I L. Design and Control of Distillation Systems for Separating Azeotropes [M]. John Wiley & Sons, 2011.
[5]	Widagdo S, Seider W D. Journal review: Azeotropic distillation [J]. AIChE Journal, 1996, 42 (1): 96-130.
[6]	Li Xingang (李鑫刚). Energy Saving and Intensification Technologies for Distillation Process (蒸馏过程节能与强化技术) [M]. Beijing: Chemical Industry Press, 2012.
[7]	Knapp J P, Doherty M F. Thermal integration of homogeneous azeotropic distillation sequences [J]. AIChE Journal, 1990, 36 (7): 969-984.
[8]	Luyben W L. Comparison of extractive distillation and pressure-swing distillation for acetone-methanol separation [J]. Industrial & Engineering Chemistry Research, 2008, 47 (8): 2696-2707.
[9]	Kaibel B, Jansen H, Zich E, Olujic Z. Unfixed dividing wall technology for packed and tray distillation columns [J]. Distillation Absorption, 2006, 152: 252e66.
[10]	Wolff E A, Skogestad S. Operation of integrated three- product (Petlyuk) distillation columns [J]. Industrial & Engineering Chemistry Research, 1995, 34 (6): 2094-2103.
[11]	Xia M, Yu B, Wang Q, Jiao H, Xu C. Design and control of extractive dividing-wall column for separating methylal- methanol mixture [J]. Industrial & Engineering Chemistry Research, 2012, 51 (49): 16016-16033.
[12]	Qin J, Ye Q, Xiong X, Li N. Control of benzene- cyclohexane separation system via extractive distillation using sulfolane as entrainer [J]. Industrial & Engineering Chemistry Research, 2013, 52 (31): 10754-10766.
[13]	Grassi V G. Practical Distillation Control [M]. New York: Van Nostand Reinhold, 1992: 45-57.
[14]	Luyben W L. Plantwide control of an isopropyl alcohol dehydration process [J]. AIChE Journal, 2006, 52 (6): 2290- 2296.
[15]	Luyben W. Plantwide Dynamic Simulators in Chemical Processing and Control [M]. New York: CRC Press, 2002: 453-461.
[16]	Ling H, Luyben W L. New control structure for divided-wall columns [J]. Industrial & Engineering Chemistry Research, 2009, 48 (13): 6034-6049.
[17]	Gómez-Castro F I, Segovia-Hernández J G, Hernandez S, Gutiérrez-Antonio C, Briones-Ramírez A. Dividing wall distillation columns: optimization and control properties [J]. Chemical Engineering & Technology, 2008, 31 (9): 1246-1260.
[18]	Alcantara-Avila J R, Cabrera-Ruiz J, Segovia-Hernandez J G, Hernández S, Rong B. Controllability analysis of thermodynamically equivalent thermally coupled arrangements for quaternary distillations [J]. Chemical Engineering Research and Design, 2008, 86 (1): 23-37.
[19]	Kiss A A, Rewagad R R. Energy efficient control of a BTX dividing-wall column [J]. Computers & Chemical Engineering, 2011, 35 (12): 2896-2904.
[20]	Wolff E A, Skogestad S. Operation of integrated three- product (Petlyuk) distillation columns [J]. Industrial & Engineering Chemistry Research, 1995, 34 (6): 2094-2103.

萃取精馏分离苯/环己烷共沸体系的控制策略

Operation and control of extractive distillation for separation of azeotropic benzene/cyclohexane system

PDF (PC)

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献 20

相关文章 15

编辑推荐

Metrics

本文评价

[1]	康飞, 吕伟光, 巨锋, 孙峙. 废锂离子电池放电路径与评价研究[J]. 化工学报, 2023, 74(9): 3903-3911.
[2]	王俐智, 杭钱程, 郑叶玲, 丁延, 陈家继, 叶青, 李进龙. 离子液体萃取剂萃取精馏分离丙酸甲酯+甲醇共沸物[J]. 化工学报, 2023, 74(9): 3731-3741.
[3]	曹跃, 余冲, 李智, 杨明磊. 工业数据驱动的加氢裂化装置多工况切换过渡状态检测[J]. 化工学报, 2023, 74(9): 3841-3854.
[4]	文兆伦, 李沛睿, 张忠林, 杜晓, 侯起旺, 刘叶刚, 郝晓刚, 官国清. 基于自热再生的隔壁塔深冷空分工艺设计及优化[J]. 化工学报, 2023, 74(7): 2988-2998.
[5]	李木金, 胡松, 施德磐, 赵鹏, 高瑞, 李进龙. 环氧丁烷尾气溶剂吸收及精制工艺[J]. 化工学报, 2023, 74(4): 1607-1618.
[6]	苏晓丹, 朱干宇, 李会泉, 郑光明, 孟子衡, 李防, 杨云瑞, 习本军, 崔玉. 湿法磷酸半水工艺考察与石膏结晶过程研究[J]. 化工学报, 2023, 74(4): 1805-1817.
[7]	张中秋, 李宏光, 石逸林. 基于人工预测调控策略的复杂化工过程多任务学习方法[J]. 化工学报, 2023, 74(3): 1195-1204.
[8]	张江淮, 赵众. 碳三加氢装置鲁棒最小协方差约束控制及应用[J]. 化工学报, 2023, 74(3): 1216-1227.
[9]	徐银, 蔡洁, 陈露, 彭宇, 刘夫珍, 张晖. 异相可见光催化耦合过硫酸盐活化技术在水污染控制中的研究进展[J]. 化工学报, 2023, 74(3): 995-1009.
[10]	王雪松, 曾祥宇, 薄翠梅, 汤舒淇, 董超, 李俊, 张泉灵, 金晓明, 叶胜利. PTFE间歇聚合反应过程变周期动态经济优化控制[J]. 化工学报, 2022, 73(9): 3973-3982.
[11]	周乐, 沈程凯, 吴超, 侯北平, 宋执环. 深度融合特征提取网络及其在化工过程软测量中的应用[J]. 化工学报, 2022, 73(7): 3156-3165.
[12]	王琨, 侍洪波, 谭帅, 宋冰, 陶阳. 局部时差约束邻域保持嵌入算法在故障检测中的应用[J]. 化工学报, 2022, 73(7): 3109-3119.
[13]	赵涛岩, 曹江涛, 李平, 冯琳, 商瑀. 区间二型模糊免疫PID在环己烷无催化氧化温度控制系统中的应用[J]. 化工学报, 2022, 73(7): 3166-3173.
[14]	刘鑫, 潘阳, 刘公平, 方静, 李春利, 李浩. 渗透汽化-隔壁塔精馏耦合初步分离费托合成水的过程研究[J]. 化工学报, 2022, 73(5): 2020-2030.
[15]	潘多涛, 王旭东, 史洪岩, 修志龙. 生物基1， 3-丙二醇连续发酵过程的稳态分析与反馈控制[J]. 化工学报, 2022, 73(5): 2094-2100.