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Method of reducing the energy consumption at the refining of cellulose-containing material EP 0302075 A1
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics. (FSCN - High Yield Pulping Research Profile)
Innventia (STFI).
Mid Sweden University, Faculty of Science, Technology and Media, Department of Chemical Engineering. (High Yield Pulping Research Profile)
STFI.
1989 (English)Patent (Other (popular science, discussion, etc.))
Abstract [en]

The method of reducing the energy consumption in the refining / beating of a material containing cellulose consists of adding an alkali to the material to neutralize the acid groups bound to the fiber wall. According to the invention, the pH value in the pulp suspension is measured at the outlet of the refiner, alkali is added in an amount depending on the pH value measured for the neutralization without excess in the threshing zone or immediately before the material enters the latter in an amount between 0.05 and 9 kg / ton, preferably 0.5 to 5 kg / ton, more particularly between 1 and 4 kg / ton, the calculation being performed NaOH kilogram per ton of pulp.

Place, publisher, year, edition, pages
1989.
National Category
Paper, Pulp and Fiber Technology
Identifiers
URN: urn:nbn:se:miun:diva-29406OAI: oai:DiVA.org:miun-29406DiVA: diva2:1051871
Patent
DE EP 0302075 A1 (1989-02-08)
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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