Modeling and Simulation of Ethylene Polymerization in Industrial Slurry Reactor Series

doi:10.1016/S1004-9541(13)60553-4

Chinese Journal of Chemical Engineering ›› 2013, Vol. 21 ›› Issue (8): 850-859.DOI: 10.1016/S1004-9541(13)60553-4

• 催化、动力学与反应工程 • 上一篇下一篇

Modeling and Simulation of Ethylene Polymerization in Industrial Slurry Reactor Series

孟伟娟^1,2, 李建伟¹, 陈标华¹, 李洪泊²

1 State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China;
2 Yanshan Branch, Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation, Beijing 102500, China

收稿日期:2012-06-28 修回日期:2012-12-24 出版日期:2013-08-28 发布日期:2013-08-24
通讯作者: LI Jianwei

Modeling and Simulation of Ethylene Polymerization in Industrial Slurry Reactor Series

MENG Weijuan^1,2, LI Jianwei¹, CHEN Biaohua¹, LI Hongbo²

1 State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China;
2 Yanshan Branch, Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation, Beijing 102500, China

Received:2012-06-28 Revised:2012-12-24 Online:2013-08-28 Published:2013-08-24

摘要/Abstract

摘要： A five-site comprehensive mathematical model was developed to simulate the steady-state behavior of industrial slurry polymerization of ethylene in multistage continuous stirred tank reactors. More specifically, the effects of various operating conditions (i.e., inflow rates of catalyst, hydrogen and comonomer) on the molecular structure and properties of polyethylene (i.e., M_w, M_n, polydispersity index (I_PD), melt index, density, etc.) are fully assessed. It is shown that the proposed comprehensive model is capable of simulating the steady-state operation of an industrial slurry stirred tank reactor series. It is demonstrated that changing the catalyst flow rate, changes simultaneously the mean residence-time in both reactors, which plays a significant role on the establishment of polyethylene architecture properties such as molecular mass and I_PD. The melt index and density of polyethylene are mainly controlled by hydrogen and comonomer concentration, respectively.

关键词: bimodal polyethylene, multiple tanks in series, simulation, polymerization

Abstract: A five-site comprehensive mathematical model was developed to simulate the steady-state behavior of industrial slurry polymerization of ethylene in multistage continuous stirred tank reactors. More specifically, the effects of various operating conditions (i.e., inflow rates of catalyst, hydrogen and comonomer) on the molecular structure and properties of polyethylene (i.e., M_w, M_n, polydispersity index (I_PD), melt index, density, etc.) are fully assessed. It is shown that the proposed comprehensive model is capable of simulating the steady-state operation of an industrial slurry stirred tank reactor series. It is demonstrated that changing the catalyst flow rate, changes simultaneously the mean residence-time in both reactors, which plays a significant role on the establishment of polyethylene architecture properties such as molecular mass and I_PD. The melt index and density of polyethylene are mainly controlled by hydrogen and comonomer concentration, respectively.

Key words: bimodal polyethylene, multiple tanks in series, simulation, polymerization

孟伟娟, 李建伟, 陈标华, 李洪泊. Modeling and Simulation of Ethylene Polymerization in Industrial Slurry Reactor Series[J]. Chinese Journal of Chemical Engineering, 2013, 21(8): 850-859.

MENG Weijuan, LI Jianwei, CHEN Biaohua, LI Hongbo. Modeling and Simulation of Ethylene Polymerization in Industrial Slurry Reactor Series[J]. Chin.J.Chem.Eng., 2013, 21(8): 850-859.

参考文献

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Modeling and Simulation of Ethylene Polymerization in Industrial Slurry Reactor Series

Modeling and Simulation of Ethylene Polymerization in Industrial Slurry Reactor Series

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