Prevention of fouling and scaling in stationary and circulating liquid-solid fluidized bed heat exchangers: Particle impact measurements and analysis

P. Pronk*, C. A. Infante Ferreira, Geert-Jan Witkamp

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

Fluidized particles in liquid-solid fluidized bed heat exchangers are able to remove deposits from the walls and thus to prevent fouling or scaling. This fouling prevention ability is believed to depend strongly on the frequency and force of particle-wall collisions. This paper presents piezoelectric measurements of impacts on the wall in both stationary and circulating fluidized beds of various particle sizes and bed voidages. Two types of impacts were measured, namely by collisions of particles on the sensor and by liquid pressure fronts induced by particle-particle collisions close to the sensor. The characteristics of both impact types are used to analyze the total impulse and energy exerted by impacts on the wall for various fluidized beds.

Original languageEnglish (US)
Pages (from-to)3857-3868
Number of pages12
JournalInternational Journal of Heat and Mass Transfer
Volume52
Issue number15-16
DOIs
StatePublished - Jul 1 2009

Keywords

  • Collision mechanics
  • Fouling
  • Heat exchanger
  • Liquid-solid fluidized bed
  • Scaling

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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