Method of reducing the energy consumption at the refining of cellulose containing material [Sätt att reducera energikonsumtionen vid raffinering av cellulosahaltigt material]

Engstrand, Per,1955-Mittuniversitetet,Institutionen för naturvetenskap, teknik och matematik (-2012),FSCN - High Yield Pulping Research Profile (author)

Also granted in Sweden SE456826 (B) ― 1988-11-07 and Finland FI85036 (C) ― 1992-02-25. International application WO8706280 (A1) ― 1987-10-22, in U.S. US5007985 (A) ― 1991-04-16, in Europe EP0302075 (A1) ― 1989-02-08 and in Australia AU7304987 (A) ― 1987-11-09.
Method of reducing the energy consumption at 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 neutralization without excess in the beating zone or immediately before the material enters the same, in an amount of 0.05-9 kg/ton, preferably 0.5-5 kg/ton, suitably 1-4 kg/ton, calculated as NaOH.

Hammar, Lars Åke,1952-Innventia (STFI) (author)
Htun, MyatMittuniversitetet,Avdelningen för kemiteknik,High Yield Pulping Research Profile (author)
Pettersson, Rune,1955-STFI (author)
MittuniversitetetInstitutionen för naturvetenskap, teknik och matematik (-2012) (creator_code:org_t)

By the author/editor: Engstrand, Per, ...; Hammar, Lars Åke ...; Htun, Myat; Pettersson, Rune ...

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Materials Engine ...; and Paper Pulp and F ...

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