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Method of reducing the energy consumption at the refining of cellulose-containing material CA 1281856 C
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics. (FSCN)
Mid Sweden University, Faculty of Science, Technology and Media, Department of Chemical Engineering. (High Yield Pulping Research Profile)
STFI.
Innventia (STFI).
1991 (English)Patent (Other (popular science, discussion, etc.))
Abstract [en]

The invention relates to a method of reducing the energy consumption in the refining/beating of cellulose-containing material by the addition of alkali to the material for neutralizing acid groups bonded to the fibre wall. According to the invention, the pH-value in the pulp suspension is measured at the refiner outlet, the alkali is added in an amount depending on the measured pH value for neutral-ization without excess in the beating zone or immediately before the material enters the same, in an amount of 0.05-9 kg/ton, prererably 0.5-5 kg/ton, suitably 1-4 kg/ton, calculated as NaOH.

Place, publisher, year, edition, pages
1991.
Keyword [en]
mechanical pulp, energy
National Category
Paper, Pulp and Fiber Technology
Identifiers
URN: urn:nbn:se:miun:diva-29404OAI: oai:DiVA.org:miun-29404DiVA: diva2:1051869
Patent
CA CA 1281856 C (1991-03-26)
Available from: 2016-12-04 Created: 2016-12-04 Last updated: 2016-12-13Bibliographically approved

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Engstrand, Per
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