期刊
CHEMICAL ENGINEERING SCIENCE
卷 190, 期 -, 页码 260-272出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ces.2018.06.032
关键词
Crystallization; Image analysis; Fokker-Planck Equation; Particle Size Distribution; Model-based Control
This article focuses on the design and implementation of model-based control strategies for real time control of crystal size distribution (CSD) in semi batch crystallization processes. The objective of the feedback controller is to reach a desired particle mean size while the standard deviation is controlled in a feed-forward fashion. Alternative model-based control strategies are formulated and implemented for a target mean size. An image processing technique based on wavelet-fractal and energy signature analysis is employed to determine online CSD status for the controller's corrective actions. To validate the proposed model-based control strategies, unseeded crystallization of sodium chloride in water using ethanol as antisolvent is performed in an experimental bench-scale semi-batch crystallizer. (C) 2018 Elsevier Ltd. All rights reserved.
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