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Method of reducing the energy consumption at the refining of cellulose containing material [Sätt att reducera energikonsumtionen vid raffinering av cellulosahaltigt material]
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för naturvetenskap, teknik och matematik. (FSCN - High Yield Pulping Research Profile)
Innventia (STFI).
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för kemiteknik. (High Yield Pulping Research Profile)
STFI.
1987 (engelsk)Patent (Annet (populærvitenskap, debatt, mm))
Abstract [en]

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.

sted, utgiver, år, opplag, sider
1987.
Emneord [en]
mechanical pulp, energy
HSV kategori
Identifikatorer
URN: urn:nbn:se:miun:diva-29412OAI: oai:DiVA.org:miun-29412DiVA, id: diva2:1051885
Patent
CA 1281856 (C) (1991-03-26)
Merknad

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.

Tilgjengelig fra: 2016-12-04 Laget: 2016-12-04 Sist oppdatert: 2018-04-13bibliografisk kontrollert

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