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


Pascual M. R. , GENCELI F. E. , TRAMBITAS D. O. , EVERS H., VAN SPRONSEN J., WITKAMP G. J.

CHEMICAL ENGINEERING RESEARCH & DESIGN, cilt.88, ss.1252-1258, 2010 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 88
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1016/j.cherd.2009.07.015
  • Dergi Adı: CHEMICAL ENGINEERING RESEARCH & DESIGN
  • Sayfa Sayıları: ss.1252-1258

Özet

A novel scraped cooled wall crystallizer (SCWC-2) with 1301 capacity and total heat transfer area of 2.94 m(2) m(-3) crystallizer volume was specifically designed for eutectic freeze crystallization (EFC). It has been successfully tested for the recovery of Na(2)CO(3) 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 10.5 kW m(-2)) were obtained and as a consequence high production rates were achieved. (C) 2009 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.