Crystal size control in a continuous tubular crystallizer

MO Besenhard, P Neugebauer, CD Ho… - Crystal Growth & …, 2015 - ACS Publications
This paper describes a simple model-free (ie, empirical) control strategy for crystal size
tuning in a continuously operated tubular crystallizer. The crystallizer is designed for a …

Modeling and Predictive Control of Cooling Crystallization of Potassium Sulfate by Dynamic Image Analysis: Exploring Phenomenological and Machine Learning …

MGF de Moraes, FARD Lima, PLC Lage… - Industrial & …, 2023 - ACS Publications
Representative mathematical modeling is essential for understanding the batch cooling
crystallization processes. Efficient process design and operation are relevant to achieving …

Model-based control-loop performance of a continuous direct compaction process

R Ramachandran, J Arjunan, A Chaudhury… - Journal of …, 2011 - Springer
This study is concerned with enhanced model-based control of a continuous direct
compression pharmaceutical process. The control-loop performance is assessed in silico …

Optimization and control of crystal shape and size in protein crystallization process

JJ Liu, YD Hu, XZ Wang - Computers & chemical engineering, 2013 - Elsevier
Large molecule protein crystals have shown significant benefits in the delivery of
biopharmaceuticals to achieve high stability, high concentration of active pharmaceutical …

The best objective function for seeded batch crystallization

CW Hsu, JD Ward - AIChE Journal, 2013 - Wiley Online Library
Although many researchers have optimized the operation of seeded batch crystallization,
there remains little understanding of the effect of the choice of objective function on the …

Improvement of batch crystallization control under uncertain kinetic parameters by model predictive control

A Saengchan, P Kittisupakorn, W Paengjuntuek… - Journal of Industrial and …, 2011 - Elsevier
As the widespread use of a batch crystallization process in many industries, finding an
optimal operating condition and effective control strategy are significant for improving …

Time evolution of the PSD in crystallization operations: An analytical solution based on Ornstein‐Uhlenbeck process

G Cogoni, M Grosso, R Baratti, JA Romagnoli - AIChE journal, 2012 - Wiley Online Library
A new formulation of the recent stochastic approach for the description of the particle‐size
distribution (PSD) time evolution in antisolvent crystal‐growth processes is presented. In this …

Model‐free control of a seeded batch crystallizer

N Afsi, T Bakir, S Othman… - The Canadian Journal of …, 2018 - Wiley Online Library
As the use of a batch crystallization process in several industrial applications is extensive,
finding an effective control strategy is important to improve the product quality, which is …

[PDF][PDF] Improvement of biodiesel production in batch transesterification process

A Chanpirak, W Weerachaipichasgul - Proceedings of the International …, 2017 - iaeng.org
Biodiesel production improvement in batch transesterification process can be achieved by 2
strategies: optimization and nonlinear model based control. To modify optimal temperature …

Neural network based modeling and control for a batch heating/cooling evaporative crystallization process

W Daosud, J Thampasato, P Kittisupakorn - Engineering Journal, 2017 - engj.org
Crystallization processes have been widely used for separation in many fields to provide a
high purity product. In this work, dynamic optimization and neural network (NN) have been …