Salt crystallization on a 1 m3 scale: from hierarchical design to pilot plant operation


The synthesis of solution crystallization processes is a complex task that often leads to multiple process options. In order ensure design reproducibility and hierarchical design procedure has been proposed. The procedure has compared favorably to the currently accepted procedure because the number of design of decisions is more evenly distributed throughout the design levels. The procedure is based on the work of Bermingham (A design procedure and predictive models for solution crystallization process. PH.D. thesis, Delft University of Technology, 2003), but recourse to sophisticated phenomenological models is avoided. Instead, experimental information, heuristics and qualitative theoretical considerations are used to cope with systems for which fragmentary information is available, since is the situation most commonly found in industrial practice. Its applicability has beren demonstrated in the design of a sodium chloride crystallization process on a 1 m scale. Analysis of the pilot unit operation has led to the identification of improved designs criteria related to process control, temperature elevation in the recirculation loop, and crystals washing

SECKLER, Marcelo Martins; GIULIETTI, Marco ; BERNARDO, André ; DERENZO, Silas ; CEKINSKI, Efraim ; SILVA, André Nunis ; KRAMER, Herman J.M. ; BOSCH, Max . Salt crystallization on a 1 m3 scale : from hierarchical design to pilot plant operation. I&EC, Industrial & Engineering Chemical Research, v. 52, n. 11, p. 4161-4167, 2013.

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