MOLECULAR WEIGHT CONTROL OF A BATCH SUSPENSION POLYMERIZATION REACTOR

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SHAHROKHI M.; FANAEI M.A.

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Journal Paper

Paper Information

Journal: Iranian Polymer Journal Year:2002 | Volume:11 | Issue:6 Page(s): 403-411

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Information Journal Paper

Title

MOLECULAR WEIGHT CONTROL OF A BATCH SUSPENSION POLYMERIZATION REACTOR

Author(s)

SHAHROKHI M. | FANAEI M.A. | Issue Writer Certificate

Keywords

MOLECULAR WEIGHT CONTROL

STATE ESTIMATION

SUSPENSION POLYMERIZATION

BATCH REACTOR

CASCADE CONTROL

Abstract

This paper concerns MOLECULAR WEIGHT CONTROL of a batch polymerization reactor where SUSPENSION POLYMERIZATION of methyl methacrylate(MMA) takes place. For this purpose, a CASCADE CONTROL structure with two control loops has been selected. The slave loop is used for temperature control using on-line temperature measurements, and the master loop controls the average molecular weights based on its estimated values. Two different control algorithms namely proportional-integral(PI) controller and globally linearizing controller (GLC) have been used for temperature control. An estimator, which has the structure of an extended Kalman filter (EKF), is used for estimating monomer conversion and average molecular weights of polymer using reactor temperature measurements. The performance of proposed control algorithm is evaluated through simulation and experimental studies. The results indicate that a constant average molecular weight can not be achieved in case of strong gel effect. However, the polydispersity of product will be lower in comparison to isothermal operation. It is also shown that in case of model mismatch, the performance of CASCADE CONTROL is superior compared to the case where only reactor temperature is controlled based on desired temperature trajectory obtained through cascade strategy.

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APA: Copy

SHAHROKHI, M., & FANAEI, M.A.. (2002). MOLECULAR WEIGHT CONTROL OF A BATCH SUSPENSION POLYMERIZATION REACTOR . IRANIAN POLYMER JOURNAL (ENGLISH), 11(6), 403-411. SID. https://sid.ir/paper/530012/en

Vancouver: Copy

SHAHROKHI M., FANAEI M.A.. MOLECULAR WEIGHT CONTROL OF A BATCH SUSPENSION POLYMERIZATION REACTOR . IRANIAN POLYMER JOURNAL (ENGLISH)[Internet]. 2002;11(6):403-411. Available from: https://sid.ir/paper/530012/en

IEEE: Copy

M. SHAHROKHI, and M.A. FANAEI, “MOLECULAR WEIGHT CONTROL OF A BATCH SUSPENSION POLYMERIZATION REACTOR ,” IRANIAN POLYMER JOURNAL (ENGLISH), vol. 11, no. 6, pp. 403–411, 2002, [Online]. Available: https://sid.ir/paper/530012/en

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