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A comparative study of models describing high consistency refining
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics.ORCID iD: 0000-0003-3381-5516
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics.
2011 (English)In: Proceedings of International Mechanical Pulping Conference, Pulp and Paper Technical Association of Canada, 2011, 96-100 p.Conference paper, Published paper (Refereed)
Abstract [en]

By using the same selected input data in three different refining models the model predictions could be compared both in relation to each other and related to experimental data. Predictions delivered by the Miles and May model deviated most from the estimates based on measured values. The fluid dynamical model and especially the entropy model showed good agreement both when it came to describing the specific energy distribution and the local refining intensity distribution over the refining radius. However, the entropy model had problems with predicting the mean fibre velocity close to the refiner inlet while the fluid dynamical model had a tendency to overestimate the fibre velocity when approaching the periphery. In conclusion, the models

could deliver realistic estimates. Still, the models need to be developed to be able to depict refining actions even better. To validate new or improved models, more research involving measurements from refiner gaps are needed.

Place, publisher, year, edition, pages
Pulp and Paper Technical Association of Canada, 2011. 96-100 p.
Keyword [en]
High consistency refining, Refining intensity, Refining models
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:miun:diva-15293ISI: 000308615200020ISBN: 978-7-5019-8251-6 (print)OAI: oai:DiVA.org:miun-15293DiVA: diva2:466009
Conference
International Mechanical Pulping Confrence, Xian, China
Projects
Filling the Gap
Available from: 2011-12-15 Created: 2011-12-15 Last updated: 2014-08-31Bibliographically approved

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