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Evaluation Of Collimated Chipping Technology For Reducing Energy Consumption In Mechanical Pulping
Mid Sweden University, Faculty of Science, Technology and Media, Department of applied science and design. (FSCN)
Mid Sweden University, Faculty of Science, Technology and Media, Department of applied science and design.ORCID iD: 0000-0002-3622-4247
Mid Sweden University, Faculty of Science, Technology and Media, Department of applied science and design. (FSCN)
Mid Sweden University, Faculty of Science, Technology and Media, Department of applied science and design. (FSCN)
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2012 (English)In: Journal of Science & Technology for Forest Products and Processes, ISSN 1927-6311, E-ISSN 1927-632X, Vol. 2, no 3, 6-9 p.Article in journal (Refereed) Published
Abstract [en]

It has recently been shown that the energy efficiency during first-stage TMP (thermo-mechanical pulp) refining can be improved using amodified chipping method (collimated chipping), where the angle between the fibre direction of the wood specimen and the cutting plane is increased. This paper reports the differences in properties of TMP refined from wood chips produced at two different spout angles, 30° and 50°, with and without the addition of sodium bisulphite (NaHSO3) to the dilution water. It was found that the specific energy input for a certain CSF (Canadian Standard Freeness) value was lower for chips produced at spout 50°, but that the addition of chemicals to the dilution water had no influence on the specific energy value for a given CSF value. However, the tensile index and specific light-scattering coefficient were substantially higher for handsheets made from the pulp refined from chips produced at spout angle 50° and with NaHSO3 added compared to handsheets from pulp made from 30° and 50° chips without chemicals added.

Place, publisher, year, edition, pages
2012. Vol. 2, no 3, 6-9 p.
Keyword [en]
Collimated chipping, mechanical pulping
National Category
Other Chemical Engineering
Identifiers
URN: urn:nbn:se:miun:diva-17789ISI: 000313365400002Scopus ID: 2-s2.0-84877633077OAI: oai:DiVA.org:miun-17789DiVA: diva2:577841
Note

Same creative work as:

Hellstrom, L.M., Carlberg, T., Engstrand, P., Gradin, P.A., Gregersen, O.W.Evaluation of collimated chipping technology for reducing energy consumption in mechanical pulping(2013) Pulp and Paper Canada, 114 (6), pp. 27-30. 

ISI: 000328436100008

ScopusID: 8489183501

Available from: 2012-12-17 Created: 2012-12-17 Last updated: 2017-01-16Bibliographically approved

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