Modeling and experimental studies of methyl methacrylate polymerization in a tubular reactor

doi:10.1016/j.cjche.2016.05.049

›› 2016, Vol. 24 ›› Issue (12): 1655-1663.DOI: 10.1016/j.cjche.2016.05.049

• Fluid Dynamics and Transport Phenomena • 上一篇下一篇

Modeling and experimental studies of methyl methacrylate polymerization in a tubular reactor

Mohamad-Taghi Rostami, Ali Daneshgar

Department of Engineering, Mohaghegh Ardabili University, Daneshgah Street, Ardabil, Iran

收稿日期:2016-02-03 修回日期:2016-05-31 出版日期:2016-12-28 发布日期:2017-01-04
通讯作者: Mohamad-Taghi Rostami,E-mail address:mohamadrostami1987@yahoo.com
基金资助:
Supported by Iran Polymer and Petrochemical Institute.

Modeling and experimental studies of methyl methacrylate polymerization in a tubular reactor

Mohamad-Taghi Rostami, Ali Daneshgar

Department of Engineering, Mohaghegh Ardabili University, Daneshgah Street, Ardabil, Iran

Received:2016-02-03 Revised:2016-05-31 Online:2016-12-28 Published:2017-01-04
Supported by:
Supported by Iran Polymer and Petrochemical Institute.

摘要/Abstract

摘要： In this study, rheological examination of the mixture of a tubular reactor in which methyl methacrylate was polymerized has been studied. The n (flow behavior index) value of Power Law Model of mixture contained in the reactor has been determined within the span of 0.3492 to 0.9889 by curve fitting. Employing these numerical data for velocity profile, the reactor has been modeled. Moreover, the functions of the reactor have been compared in the three modes of plug, mixed and laminar flow. The results obtained in this research indicate that the polymethyl methacrylate mixture contained in the reactor is pseudo-plastic. Moreover, as the conversion grows, the velocity profile starts as a parabolic profile and approaches the plug mode; although it never reaches the plug. The other conclusions borne in this study indicate that when the reactor's radius is decreased, the conversion rate grows. However, as decreasing the radius would also reduce the productions rate, this procedure is not economical. Finally, in this modeling, the amount of conversion is equal to 56.47% at the end and according to its laboratory proportion which is 55.88%, it has reached the conclusion that the modeling duly undertaken is applicable and valid.

关键词: Conversion, Laminar flow, MMA, Modeling, Tubular reactor

Abstract: In this study, rheological examination of the mixture of a tubular reactor in which methyl methacrylate was polymerized has been studied. The n (flow behavior index) value of Power Law Model of mixture contained in the reactor has been determined within the span of 0.3492 to 0.9889 by curve fitting. Employing these numerical data for velocity profile, the reactor has been modeled. Moreover, the functions of the reactor have been compared in the three modes of plug, mixed and laminar flow. The results obtained in this research indicate that the polymethyl methacrylate mixture contained in the reactor is pseudo-plastic. Moreover, as the conversion grows, the velocity profile starts as a parabolic profile and approaches the plug mode; although it never reaches the plug. The other conclusions borne in this study indicate that when the reactor's radius is decreased, the conversion rate grows. However, as decreasing the radius would also reduce the productions rate, this procedure is not economical. Finally, in this modeling, the amount of conversion is equal to 56.47% at the end and according to its laboratory proportion which is 55.88%, it has reached the conclusion that the modeling duly undertaken is applicable and valid.

Key words: Conversion, Laminar flow, MMA, Modeling, Tubular reactor

Mohamad-Taghi Rostami, Ali Daneshgar. Modeling and experimental studies of methyl methacrylate polymerization in a tubular reactor[J]. , 2016, 24(12): 1655-1663.

参考文献

[1] R. Walker, Chemical reaction and diffusion in a catalytic tubular reactor, Phys. Fluids 4(2004) 1211-1216.
[2] E. Nauman, Polymerization Reactor Design Polymer Reactor Engineering, 1, Springer, 1994125-147.
[3] I. Banu, Modeling and Optimization of Tubular Polymerization Reactors, Université Claude Bernard-Lyon I, 2009.
[4] S. Lynn, J.E. Huff, Polymerization in a tubular reactor, AICHE J. 17(1971) 475-481.
[5] C. Chen, E. Nauman, Verification of a complex variable viscosity model for a tubular polymerization reactor, Chem. Eng. Sci. 44(1989) 179-188.
[6] M. Ghosh, D. Foster, J. Lencyzyk, T. Forsyth, A model of a tubular reactor for the continuous polymerization of styrene:experiments at low molecular weight, AIChE Symp. Ser. 2(1976) 134-147.
[7] B.M. Louie, G.M. Carratt, D.S. Soong, Modeling the free radical solution and bulk polymerization of methyl methacrylate, J. Appl. Polym. Sci. 30(1985) 3985-4012.
[8] P.E. Baillagou, D.S. Soong, Free radical polymerization of methyl methacrylate in tubular reactors, Polym. Eng. Sci. 25(1985) 212-231.
[9] P.A. Fleury, T. Meyer, A. Renken, Solution polymerization of methyl-methacrylate at high conversion in a recycle tubular reactor, Chem. Eng. Sci. 47(1992) 2597-2602.
[10] S. Fan, S. Gretton-Watson, J. Steinke, E. Alpay, Polymerization of methyl methacrylate in a pilot-scale tubular reactor:Modelling and experimental studies, Chem. Eng. Sci. 58(2003) 2479-2490.
[11] M. Scorah, R. Dhib, A. Penlidis, Modeling of free radical polymerization of styrene and methyl methacrylate by a tetra functional initiator, Chem. Eng. Sci. 61(2006) 4827-4859.
[12] P. Baillagou, D. Soong, Molecular weight distribution of products of free radical non isothermal polymerization with gel effect simulation for polymerization of poly(methyl methacrylate), Chem. Eng. Sci. 40(1985) 87-104.
[13] J. Pinto, W. Ray, The dynamic behavior of continuous solution polymerization reactors-VII. Experimental study of a copolymerization reactor, Chem. Eng. Sci. 50(1995) 715-736.
[14] A. Tobolsky, B. Baysal, A review of rates of initiation in vinyl polymerization:styrene and methyl methacrylate, J. Polym. Sci. 11(1953) 471-486.
[15] N. Tefera, G. Weickert, K. Westerterp, Modeling of free radical polymerization up to high conversion. II. Development of a mathematical model, J. Appl. Polym. Sci. 63(1997) 1663-1680.
[16] R.H. Perry, D.W. Green, J.O. Maloney, Perry's Chemical Engineer's Handbook, McGraw-Hill Book, 1984.
[17] P. Baillagou, D. Soong, Major factors contributing to the nonlinear kinetics of freeradical polymerization, Chem. Eng. Sci. 40(1985) 75-86.
[18] M. Soroush, C. Kravaris, Nonlinear control of a batch polymerization reactor:an experimental study, AICHE J. 38(1992) 1429-1448.
[19] E.B. Nauman, Chemical Reactor Design, Optimization, and Scaleup, Wiley, New York, 2008.
[20] O. Levenspiel, Chemical Reaction Engineering, Wiley, New York, 1972.
[21] R. Bird, W. Stewart, E. Lightfoot, Transport Phenomena, Wiley, New York, 1960.
[22] C. Wyman, L. Carter, A numerical model for tubular polymerization reactors, AIChE Symp. Ser. 3(1976) 1-16.
[23] J.S. Vrentas, J.L. Duda, Diffusion in polymer-solvent systems. III. Construction of Deborah number diagrams, J. Polym. Sci. 15(1977) 441-453.
[24] J.S. Vrentas, J.L. Duda, Molecular diffusion in polymer solutions, AIChE J. 25(1979) 1-24.
[25] W.C. Chen, S.J. Lee, B.C. Ho, Diffusion coefficients of acrylic monomers in poly(methyl methacrylate), J. Polym. Res. 5(1998) 187-191.
[26] L.S. Merrill, C.E. Hamrin, Conversion and temperature profiles for complex reactions in laminar and plug flow, AIChE J. 16(1970) 194-198.
[27] R.P. Chhabra, J.F. Richardson, Non-Newtonian Flow:Fundamentals and Engineering Applications, Butterworth-Heinemann, 1999.

Modeling and experimental studies of methyl methacrylate polymerization in a tubular reactor

Modeling and experimental studies of methyl methacrylate polymerization in a tubular reactor

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]	Jindong Dai, Chi Zhai, Jiali Ai, Guangren Yu, Haichao Lv, Wei Sun, Yongzhong Liu. A cellular automata framework for porous electrode reconstruction and reaction-diffusion simulation[J]. 中国化学工程学报, 2023, 60(8): 262-274.
[2]	Borui Liu, Tao Zhang, Yi Zheng, Kailong Li, Hui Pan, Hao Ling. A dynamic control structure of liquid-only transfer stream distillation column[J]. 中国化学工程学报, 2023, 59(7): 135-145.
[3]	Tingjun Fu, Ran Wang, Kun Ren, Liangliang Zhang, Zhong Li. Intensified shape selectivity and alkylation reaction for the two-step conversion of methanol aromatization to p-xylene[J]. 中国化学工程学报, 2023, 59(7): 240-250.
[4]	Danlei Chen, Yiqing Luo, Xigang Yuan. Cascade refrigeration system synthesis based on hybrid simulated annealing and particle swarm optimization algorithm[J]. 中国化学工程学报, 2023, 58(6): 244-255.
[5]	Guangyuan Chen, Tong Zhou, Meng Zhang, Zhongxiang Ding, Zhikun Zhou, Yuanhui Ji, Haiying Tang, Changsong Wang. Effects of heavy metal ions Cu²⁺/Pb²⁺/Zn²⁺ on kinetic rate constants of struvite crystallization[J]. 中国化学工程学报, 2023, 57(5): 10-16.
[6]	Bowen Jiang, Jia Liu, Guoqiang Yang, Zhibing Zhang. Efficient conversion of CO₂ into cyclic carbonates under atmospheric by halogen and metal-free poly(ionic liquid)s[J]. 中国化学工程学报, 2023, 55(3): 202-211.
[7]	Hany M. Abd El-Lateef, Mai M. Khalaf, K. Shalabi, Antar A. Abdelhamid. Multicomponent synthesis and designing of tetrasubstituted imidazole compounds catalyzed via ionic-liquid for acid steel corrosion protection: Experimental exploration and theoretical calculations[J]. 中国化学工程学报, 2023, 55(3): 304-319.
[8]	Xibao Zhang, Zhenghong Luo. Bubble size modeling approach for the simulation of bubble columns[J]. 中国化学工程学报, 2023, 53(1): 194-200.
[9]	An Wang, Zhongyu Hou. Improving the energy efficiency of surface dielectric barrier discharge devices for plasma nitric oxide conversion utilizing active flow control[J]. 中国化学工程学报, 2023, 53(1): 270-279.
[10]	Tianqi Fang, Mengyuan Liu, Zhaozhe Li, Li Xiong, Dongpei Zhang, Kexin Meng, Xiaolei Qu, Guangyu Zhang, Xin Jin, Chaohe Yang. Hydrothermal conversion of fructose to lactic acid and derivatives: Synergies of metal and acid/base catalysts[J]. 中国化学工程学报, 2023, 53(1): 381-401.
[11]	Zhi-Guo Yuan, Yu-Xia Wang, You-Zhi Liu, Dan Wang, Wei-Zhou Jiao, Peng-Fei Liang. Research and development of advanced structured packing in a rotating packed bed[J]. 中国化学工程学报, 2022, 49(9): 178-186.
[12]	Kangcheng Wang, Jie Zhang, Dexian Huang. Online temperature estimation of Shell coal gasification process based on extended Kalman filter[J]. 中国化学工程学报, 2022, 47(7): 134-144.
[13]	Xiang Wu, Yuzhou Hou, Kanjian Zhang, Ming Cheng. Dynamic optimization of 1,3-propanediol fermentation process: A switched dynamical system approach[J]. 中国化学工程学报, 2022, 44(4): 192-204.
[14]	Danlong Li, Yannan Liang, Hainan Wang, Ruoqian Zhou, Xiaokang Yan, Lijun Wang, Haijun Zhang. Investigation on the effects of fluid intensification based preconditioning process on the decarburization enhancement of fly ash[J]. 中国化学工程学报, 2022, 44(4): 275-283.
[15]	Mohsen Rezaeimanesh, Ali Asghar Ghoreyshi, S.M. Peyghambarzadeh, Seyed Hassan Hashemabadi. A coupled CFD simulation approach for investigating the pyrolysis process in industrial naphtha thermal cracking furnaces[J]. 中国化学工程学报, 2022, 44(4): 528-542.