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

✍ Scribed by P. Pronk; C.A. Infante Ferreira; G.J. Witkamp

Book ID
103831798
Publisher
Elsevier Science
Year
2009
Tongue
English
Weight
964 KB
Volume
52
Category
Article
ISSN
0017-9310

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✦ Synopsis

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.

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