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Beatability and runnability studies of ion-exchanged unbleached kraft pulps on a pilot scale
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics.
2009 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 24, no 1, p. 94-100Article in journal (Refereed) Published
Abstract [en]

It has earlier been shown that the counter-ion to the charged groups in the fibre has a significant effect on the beatability of fibres, but large-scale investigations of this effect are scarce in the literature. The objectives of the present study were therefore to develop a technique to ion-exchange large quantities of industrial pulp into the Na+-form using complexing agents and to study the effect of industrial-scale refining on pulp fibres in the Na+-form and how the fibres respond to industrial-like papermaking. The results show that ion-exchange can indeed be conducted on a pilot-scale using complexing agents such as DTPA. The study further indicates that an energy reduction of 50% at a given WRV or tensile index may be achieved if the fibres are converted to Na+-form prior to pilot-scale refining. By applying these techniques in full-scale production, it should thus be possible to save significant amount of energy, especially in the case of papers made from unbleached pulp that usually demands a higher degree of beating to achieve sufficient strength.

Place, publisher, year, edition, pages
2009. Vol. 24, no 1, p. 94-100
National Category
Paper, Pulp and Fiber Technology
Identifiers
URN: urn:nbn:se:miun:diva-8846DOI: 10.3183/NPPRJ-2009-24-01-p094-100ISI: 000265250200013Scopus ID: 2-s2.0-65149102568OAI: oai:DiVA.org:miun-8846DiVA, id: diva2:214694
Available from: 2009-05-06 Created: 2009-05-06 Last updated: 2017-12-13Bibliographically approved

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Bäckström et al: Beatability and runnability studier os ion-exchanged unbleached kraft pulps on a pilot scale. NJPPR 2009 Vol 24 Vol 24 1 pp 094-100(648 kB)834 downloads
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Htun, Myat

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