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Modelling of the Chemical Reactions in a Continuous Pulping Digester in the Presence of the Channelling Phenomenon
Mälardalen University, School of Sustainable Development of Society and Technology. (PRO)
Mälardalen University, School of Sustainable Development of Society and Technology. (PRO)ORCID iD: 0000-0002-7233-6916
2009 (English)In: International Review of Chemical Engineering Rapid Communications, ISSN 2035-1755, Vol. 1, no 5, p. 419-427Article in journal (Refereed) Published
Abstract [en]

Pulping digester including the channelling phenomenon and chemical reactions in the channel is modelled using the CFD, finite volume method, FLUENT. The objective of this paper is to predict the chemical and hydraulic behaviour of the digester under the hazardous situations.

A 2D geometry of the digester is built and symmetric planes are defined in the Gambit. The mesh is then exported to the FLUENT and then the created half geometry was treated by axisymmetric function to establish a complete model of the digester. The Eulerian scheme is applied which    represent the multiphase flows in the digester. A heterogeneous porous media is defined for the compressible bed. Species transport is applied to define a mixture template of the wood chips components. The kappa number is predicted in the channel and around it to characterize the cooking development under hazardous conditions.               

Place, publisher, year, edition, pages
Naples, Italy: Praise Worthy Prize , 2009. Vol. 1, no 5, p. 419-427
Keywords [en]
Pulping digester, channelling, mass transfer, lignin, chemical reaction, porous media, Multiphase, axisymmetric
National Category
Paper, Pulp and Fiber Technology Fluid Mechanics and Acoustics
Research subject
Energy- and Environmental Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-7883OAI: oai:DiVA.org:mdh-7883DiVA, id: diva2:292674
Projects
KKS projekt: Use of Statistical and Physical models for on-line applicationsAvailable from: 2010-02-09 Created: 2010-02-09 Last updated: 2014-01-15Bibliographically approved

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Dahlquist, Erik

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CiteExportLink to record
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Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
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  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
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Output format
  • html
  • text
  • asciidoc
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