Modeling of sugar crystallization through knowledge integration

• Type: Article in International Scientific Journal
• Date: 2003

Authors

Petia Georgieva (Author) FEUP; Sebastião Feyo de Azevedo (Author) FEUP; Maria João Gonçalves (Author) Other; Peter Ho (Author) Other

Journal

Title: Engineering in Life Sciences

Vol. 3 No. 3

Pages: 146-153

ISSN: 1618-0240

Publisher: Wiley-Blackwell

Scientific classification

FOS: Engineering and technology > Chemical engineering

Other information

DOI: 10.1002/elsc.200390019

Abstract (EN): This paper reports on the comparison of three modeling approaches that were applied to a fed batch evaporative sugar crystallization process. They are termed white box, black box, and grey box modeling strategies, which reflects the level of physical transparency and understanding of the model. White box models represent the traditional modeling approach, based on modeling by first principles. Black box models rely on recorded process data and knowledge collected during the normal process operation. Among various tools in this group an artificial neural networks (ANN) approach is adopted in this paper. The grey box model is obtained from a combination of first principles modeling, based on mass, energy and population balances, with an ANN to approximate three kinetic parameters -- crystal growth rate, nucleation rate and the agglomeration kernel. The results have shown that the hybrid modeling approach outperformed the other aforementioned modeling strategies.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8