Optimization in seeded cooling crystallization: A parameter estimation and dynamic optimization study

2007 ◽  
Vol 46 (11) ◽  
pp. 1096-1106 ◽  
Author(s):  
S. Mostafa Nowee ◽  
Ali Abbas ◽  
Jose A. Romagnoli
Keyword(s):  
Parameter Estimation ◽  
Dynamic Optimization ◽  
Cooling Crystallization ◽  
Optimization Study

Optimization studies of low-density polyethylene process: effect of different interval numbers

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Ashraf Azmi ◽  
Suhairi Abdul Sata ◽  
Fakhrony Sholahudin Rohman ◽  
Norashid Aziz
Keyword(s):  
Dynamic Optimization ◽  
Monomer Conversion ◽  
Polymerization Process ◽  
Low Density Polyethylene ◽  
Quadratic Program ◽  
Flow Index ◽  
Low Density ◽  
Orthogonal Collocation ◽  
Interval Numbers ◽  
Optimization Study

AbstractThe highly exothermic nature of the low-density polyethylene (LDPE) polymerization process and the heating-cooling prerequisite in tubular reactor can lead to various problems particularly safety and economic. These issues complicate the monomer conversion maximization approaches. Consequently, the dynamic optimization study to obtain maximum conversion of the LDPE is carried out. A mathematical model has been developed and validated using industrial data. In the dynamic optimization study, maximum monomer conversion (XM) is considered as the objective function, whereas the constraint and bound consists of maximum reaction temperature and product melt flow index (MFI). The orthogonal collocation (OC) on finite elements is used to convert the original optimization problems into Nonlinear Programming (NLP) problems, which are then solved using sequential quadratic program (SQP) methods. The result shows that five interval numbers produce better optimization result compared to one and two intervals.

Global Dynamic Optimization for Parameter Estimation in Chemical Kinetics

2006 ◽  
Vol 110 (3) ◽  
pp. 971-976 ◽  
Author(s):  
Adam B. Singer ◽  
James W. Taylor ◽  
Paul I. Barton ◽  
William H. Green
Keyword(s):  
Parameter Estimation ◽  
Chemical Kinetics ◽  
Dynamic Optimization ◽  
Global Dynamic

Determination of kinetics in batch cooling crystallization processes-A sequential parameter estimation approach

AIChE Journal ◽  
2016 ◽  
Vol 62 (11) ◽  
pp. 3992-4012 ◽  
Author(s):  
José-Francisco Pérez-Calvo ◽  
Somnath S. Kadam ◽  
Herman J. M. Kramer
Keyword(s):  
Parameter Estimation ◽  
Cooling Crystallization ◽  
Batch Cooling

Dynamic Optimization of a Batch Cooling Crystallization Process

1999 ◽  
Vol 38 (4) ◽  
pp. 1469-1477 ◽  
Author(s):  
Yi-dong Lang ◽  
Arturo M. Cervantes ◽  
Lorenz T. Biegler
Keyword(s):  
Dynamic Optimization ◽  
Crystallization Process ◽  
Cooling Crystallization ◽  
Batch Cooling
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