Optimal grade transition control for liquid-propylene polymerization reactor

2010 ◽  
Vol 12 (3) ◽  
pp. 413-425 ◽  
Author(s):  
Mohammad Al-haj Ali
Keyword(s):  
Propylene Polymerization ◽  
Transition Control ◽  
Grade Transition ◽  
Polymerization Reactor ◽  
Liquid Propylene

scholarly journals Pole Placement-Based NMPC of Hammerstein Systems and Its Application to Grade Transition Control of Polypropylene

2012 ◽  
Vol 2012 ◽  
pp. 1-6
Author(s):  
He De-Feng ◽  
Yu Li
Keyword(s):  
Predictive Control ◽  
Pole Placement ◽  
Hammerstein Systems ◽  
Transition Control ◽  
Intermediate Variable ◽  
Grade Transition ◽  
Linear Controller ◽  
Control Actions ◽  
Linear Subsystem ◽  
Actual Control

This paper presents a new nonlinear model predictive control (MPC) algorithm for Hammerstein systems subject to constraints on the state, input, and intermediate variable. Taking no account of constraints, a desired linear controller of the intermediate variable is obtained by applying pole placement to the linear subsystem. Then, actual control actions are determined in consideration of constraints by online solving a finite horizon optimal control problem, where only the first control is calculated and others are approximated to reduce the computational demand. Moreover, the asymptotic stability can be guaranteed in certain condition. Finally, the simulation example of the grade transition control of industrial polypropylene plants is used to demonstrate the effectiveness of the results proposed here.

Propylene Polymerization Reactor Control and Estimation Using a Particle Filter and Neural Network

2017 ◽  
Vol 11 (6) ◽  
pp. 1700010 ◽  
Author(s):  
Ana Carolina Spindola Rangel Dias ◽  
Wellington Betencurte da Silva ◽  
Julio Cesar Sampaio Dutra
Keyword(s):  
Neural Network ◽  
Particle Filter ◽  
Propylene Polymerization ◽  
Reactor Control ◽  
Polymerization Reactor

Grade Transition Control for an Impact Copolymerization Reactor

1994 ◽  
Vol 27 (2) ◽  
pp. 505-510 ◽  
Author(s):  
M. Ohshima ◽  
I. Hashimoto ◽  
T. Yoneyama ◽  
M. Takeda ◽  
F. Gotoh
Keyword(s):  
Transition Control ◽  
Grade Transition

scholarly journals Hydrogen response in liquid propylene polymerization: Towards a generalized model

AIChE Journal ◽  
2006 ◽  
Vol 52 (5) ◽  
pp. 1866-1876 ◽  
Author(s):  
M. Al-haj Ali ◽  
B. Betlem ◽  
B. Roffel ◽  
G. Weickert
Keyword(s):  
Propylene Polymerization ◽  
Generalized Model ◽  
Hydrogen Response ◽  
Liquid Propylene

ansa-Zirconocenes Based onN-Substituted 2-Methylcyclopenta[b]Indoles:  Synthesis and Catalyst Evaluation in Liquid Propylene Polymerization

2003 ◽  
Vol 22 (13) ◽  
pp. 2711-2722 ◽  
Author(s):  
Jan F. van Baar ◽  
Andrew D. Horton ◽  
Kees P. de Kloe ◽  
Eric Kragtwijk ◽  
Shaen G. Mkoyan ◽  
...  
Keyword(s):  
Propylene Polymerization ◽  
Liquid Propylene
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