A novel scraped cooled wall crystallizer. Recovery of sodium carbonate and ice from an industrial aqueous solution by eutectic freeze crystallization

M. Rodriguez Pascual*, F. E. Genceli, D. O. Trambitas, H. Evers, J. Van Spronsen, Geert-Jan Witkamp

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

A novel scraped cooled wall crystallizer (SCWC-2) with 130l capacity and total heat transfer area of 2.94m2m-3 crystallizer volume was specifically designed for eutectic freeze crystallization (EFC). It has been successfully tested for the recovery of Na2CO3 from an industrial solution. Compared with earlier designs this new crystallizer shows a high improvement in gravitational separation and ice scaling removal. High heat transfer fluxes between the heat exchanger and the solution (up to 10.5kWm-2) were obtained and as a consequence high production rates were achieved.

Original languageEnglish (US)
Pages (from-to)1252-1258
Number of pages7
JournalChemical Engineering Research and Design
Volume88
Issue number9
DOIs
StatePublished - Sep 1 2010

Keywords

  • Crystallization
  • Downstream processing
  • Multiphase reactors
  • Precipitation
  • Process control
  • Scale-up

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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