基于动态优化和反馈控制的聚合反应过程牌号切换策略

doi:10.11949/j.issn.0438-1157.20141536

化工学报 ›› 2015, Vol. 66 ›› Issue (1): 299-306.DOI: 10.11949/j.issn.0438-1157.20141536

基于动态优化和反馈控制的聚合反应过程牌号切换策略

郭青, 刘海艳, 陈娟

北京化工大学信息科学与技术学院, 北京 100029

收稿日期:2014-10-11 修回日期:2014-10-20 出版日期:2015-01-05 发布日期:2015-01-05
通讯作者: 陈娟
基金资助:
国家自然科学基金项目(21376014)。

Grade transition strategy for polymerization process based on dynamic optimization and feedback control

GUO Qing, LIU Haiyan, CHEN Juan

College of Information Science &Technology, Beijing University of Chemical Technology, Beijing 100029, China

Received:2014-10-11 Revised:2014-10-20 Online:2015-01-05 Published:2015-01-05
Supported by:
supported by the National Natural Science Foundation of China (21376014).

摘要/Abstract

摘要：

针对单反应器多牌号聚合物生产过程, 提出一种结合动态优化和反馈控制的牌号切换策略。以实验室规模的连续搅拌釜式反应器中苯乙烯聚合牌号切换为对象, 以原料消耗最少为优化目标, 利用迭代动态规划求得切换过程中反应条件和产品性能指标的优化轨迹。引入针对反应温度的路径约束, 使优化后的切换轨迹更易跟踪实现, 防止过渡过程中变量的剧烈波动。仿真结果表明, 这一切换策略可以显著减少牌号切换过渡时间及过渡过程中原料的消耗量, 并能够有效克服进料温度变化的干扰。

关键词: 牌号切换, 迭代动态规划, 连续搅拌釜式反应器, 苯乙烯聚合

Abstract:

In this work, an optimal grade transition strategy based on the combination of regulatory control and dynamic optimization for a continuous multi-grades polymerization process was proposed. The optimal grade transition of a continuous stirred tank reactor (CSTR) to minimize consumption of raw materials during transition operation was discussed, and the optimal trajectories of the reaction conditions and polymer quality are calculated using iterative dynamic programming. The path constraints on the reaction temperature change was introduced to alleviate the fluctuations during grade transition, and to obtain an easily tracked optimal trajectory as well. Through case study of a free radical styrene polymerization in a pilot CSTR, it is shown that the grade transition strategy can shorten the transition time and minimize the material consumption, and overcome the disturbance of feed temperature as well.

Key words: grade transition, iterative dynamic programming, continuous stirred tank reactor (CSTR), styrene polymerization

中图分类号:

TP273.1

郭青, 刘海艳, 陈娟. 基于动态优化和反馈控制的聚合反应过程牌号切换策略[J]. 化工学报, 2015, 66(1): 299-306.

GUO Qing, LIU Haiyan, CHEN Juan. Grade transition strategy for polymerization process based on dynamic optimization and feedback control[J]. CIESC Journal, 2015, 66(1): 299-306.

参考文献 21

[1]	McAuley K B, Macgregor J F. Optimal grade transitions in a gas-phase polylene reactor [J]. AIChE Journal, 1992, 38: 1564-1576
[2]	McAuley K B, Macgregor J F. Online inference of polymer properties in an industrial polyethylene reactor [J]. AIChE Journal, 1991, 37: 825-835
[3]	Wang Ping(王平), Tian Xuemin(田学民), Huang Dexian(黄德先). Grade transition control strategy for propylene polymerization with a dual-loop reactor [J]. Journal of Tsinghua University: Science and Technology(清华大学学报:自然科学版), 2012, 52(9): 1236-1243
[4]	Xu W X, Geng Z Q, Zhu Q X, Gu X B. Optimal grade transition for polyethylene reactors based on simultaneous strategies and trust region particle swarm optimization [J]. Industrial & Engineering Chemistry Research, 2013, 52(9): 3363-3372
[5]	Li Wenyi(李文义), Ren Congjing(任聪静), Wang Jingdai(王靖岱), Yang Yongrong(阳永荣). Optimization of grade transition for continuous propylene polymerization process using continuous stir reactor in series technology [J]. Journal of Zhejiang University: Engineering Science(浙江大学学报:工学版), 2010, 44(2): 326-331
[6]	Debling J A, Han G C, Kuijpers F, et al. Dynamic modeling of product grade transitions for olefin polymerization processes [J]. AIChE Journal, 1994, 40(3): 506-520
[7]	Takeda M, Ray W H. Optimal-grade transition strategies for multistage polyolefin reactors [J]. AIChE Journal, 1999, 45(8): 1776-1793
[8]	Chatzidoukas C, Perkins J D, Pistikopoulos E N, Kiparissides C. Optimal grade transition and selection of closed-loop controllers in gas-phase olefin polymerization fluidized bed reactor [J]. Chemical Engineering Science, 2003, 58: 3643-3658
[9]	Liu Mengmeng(刘蒙蒙), Zhan Zhiliang(占志良), Shao Zhijiang(邵之江), Chen Xi(陈曦), Gu Xueping(顾雪萍). Dynamic simulation of grade transition for ethylene slurry polymerization process based on simultaneous approach [J]. CIESC Journal(化工学报), 2012, 63(7): 2703-2709
[10]	Wang Jingdai(王靖岱), Chen Jizhong(陈纪忠), Yang Yongrong(阳永荣), Cheng Zhiqiang(程志强), Dai Liankui(戴连奎). Application of iterative dynamic programming to optimal grade transition model [J]. Journal of Chemical Engineering of Chinese Universities(高校化学工程学报), 2000, 14(3): 264-269
[11]	Fei Zhengshun(费正顺), Hu Bin(胡斌), Ye Lubin(叶鲁彬), Zheng Pingyou(郑平友), Liang Jun(梁军). Optimal grade transition of polymerization process with path constraints [J]. CIESC Journal(化工学报), 2010, 61(4): 893-900
[12]	Huang Hua(黄骅), Yu Li(俞立), Zhang Guijun(张贵军), Chen Qiuxia(陈秋霞). A modified differential evolution algorithm and its application to optimal grade transition in polypropylene [J]. Journal of Chemical Industry and Engineering (China)(化工学报), 2008, 59(7): 1711-1714
[13]	Zhao Zhong(赵众), Qi Lihua(齐丽华). PE multi-grade transition optimization based on the improved simultaneous strategies [J]. Automation in Petro-Chemical Industry(石油化工自动化), 2012, 48(1): 38-42
[14]	Xia Luyue(夏陆岳), Pan Haitian(潘海天), Zhou Mengfei(周猛飞), Cai Yijun(蔡亦军), Sun Xiaofang(孙小方), Sheng Yuxiang(盛煜翔). Optimization of polypropylene production based on improved chaotic particle swarm algorithms [J]. Computers and Applied Chemistry(计算机与应用化学), 2012, 29(7): 851-854
[15]	Padhiyar N, Bhartiya S, Gudi R D. Optimal grade transition in polymerization reactors: a comparative case study [J]. Industrial & Engineering Chemistry Research, 2006, 45(10): 3583-3592
[16]	Asteasuain M, Bandoni A, Sarmoria C, Brandolin A. Simultaneous process and control system design for grade transition in styrene polymerization [J]. Chemical Engineering Science, 2006, 61(10): 3362-3378
[17]	Guo Q, Liu S Y, Noda M, et al. Optimal grade transition for quality control of continuous free radical polymerization process [J]. International Journal of Comprehensive Engineering (Part B: Intelligent Engineering), 2012, 1(1): 83-90
[18]	Liang Jianping(梁建平), Gu Xueping(顾雪萍), Ye Yuesheng(叶跃昇). Grade transition policy research of pre-polymerization of styrene on plant scale [J]. Journal of Chemical Engineering of Chinese Universities (高校化学工程学报), 2003, 17(6): 695-701
[19]	Luus R. Optimization of fed-batch fermentors by iterative dynamic programming [J]. Biotechnology and Bioengineering, 1993, 41(5): 599-602
[20]	Guo Q, Noda M, Nishitani H. Optimization of operating conditions for polymer quality control in a continuous stirred tank reactor[J]. Journal of Chemical Engineering of Japan, 2008, 41(5): 394-402
[21]	Liu Shengyun(刘昇云), Guo Qing(郭青), Chen Jun(陈娟), Jin Cuiyun(金翠云). Optimal grade transition strategy for a continuous styrene polymerization process [J]. Journal of Beijing University of Chemical Technology(北京化工大学学报), 2014, 41(5): 101-106

基于动态优化和反馈控制的聚合反应过程牌号切换策略

Grade transition strategy for polymerization process based on dynamic optimization and feedback control

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