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Drying of Granular Food Materials in a Continuous Vibrated Fluidised Bed Dryer
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Transport Phenomena. (Drying)
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Transport Phenomena. (Drying)
2011 (English)In: IACChE 2011 / [ed] Ricardo Pérez, Santiago, Chile: Chilean Institute of Chemical Engineers , 2011, S4-55 p.Conference paper, Published paper (Refereed)
Abstract [en]

A mathematical model for the drying of grain in a continuous vibrated fluidised bed dryer was developed. A plug-flow equipment model in which, a thin layer of particles moving forward and well mixed in the direction of the gas flow was applied. Mass and heat transfer within a single wet particle was described by effective transport coefficients. Assuming constant effective mass transport coefficient and thermal conductivity, analytical solutions of the mass and energy balances were obtained. The variation of both transport coefficients along the dryer was taken into account by a stepwise application of the analytical solution in space intervals with averaged coefficients from previous locations in the dryer. Calculation results were in fairly good agreement with experimental data from the literature. The effects of operational parameters on moisture content and temperature profiles along the dryer were studied.

Place, publisher, year, edition, pages
Santiago, Chile: Chilean Institute of Chemical Engineers , 2011. S4-55 p.
Keyword [en]
Drying modelling; Continuously-worked dryer; Heat and mass transfer; Dryer simulation
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-84633OAI: oai:DiVA.org:kth-84633DiVA: diva2:499546
Conference
25th Inter-American Congress of Chemical Engineering. Santiago, Chile. November 14-17, 2011.
Note

QC 20120330

Available from: 2012-02-13 Created: 2012-02-13 Last updated: 2016-08-18Bibliographically approved

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