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Chip compression and shear as ways to reduce energy consumption in refining. Final report; Hakkeen puristus- ja leikkausvoimakaesittely hiertaemisen energiankulutuksen vaehentaemiskeinona. Loppuraportti

Technical Report:

Abstract

Reducing energy consumption in softwood chip refining, without adverse effects on pulp quality, has been studied on the Finnish Pulp and Paper Research Institute`s new chip refiner by subjecting the chips to a suitable combination of shear and compressive forces. Defibration has been studied with different refiner plate geometries to enable maximum refiner speed to be used with low energy consumption without reducing the size of the long-fibre fraction. The variables used were the peripheral speed of the refiner and plate pattern in the crushing section. Runs carried out with different plate patterns and refiner speeds showed that the energy needed for defibration varies greatly. With defibration at high speed and 25% below normal energy consumption, the problem was a loss of about 10% in average fibre length. The aim in future investigations will be to develop the plate pattern in the crushing section to find the best compromise between low defibration energy and acceptable fibre length. (orig.)
Authors:
Virtanen, J [1] 
  1. Sunds Defibrator Oy (Finland)
Publication Date:
Dec 31, 1993
Product Type:
Technical Report
Report Number:
KCL-KUITU-31
Reference Number:
SCA: 320303; PA: FI-94:003542; EDB-95:008087; SN: 94001284787
Resource Relation:
Other Information: DN: FIBRE Research Programme; PBD: 1993
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; PAPER INDUSTRY; ENERGY CONSERVATION; FIBERS; REFINING; 320303; EQUIPMENT AND PROCESSES
OSTI ID:
10102539
Research Organizations:
Finnish Pulp and Paper Research Inst., Espoo (Finland)
Country of Origin:
Finland
Language:
Finnish
Other Identifying Numbers:
Other: ON: DE95717483; CNN: Project KTM-201/881/87; TRN: FI9403542
Availability:
OSTI; NTIS
Submitting Site:
FI
Size:
11 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Virtanen, J. Chip compression and shear as ways to reduce energy consumption in refining. Final report; Hakkeen puristus- ja leikkausvoimakaesittely hiertaemisen energiankulutuksen vaehentaemiskeinona. Loppuraportti. Finland: N. p., 1993. Web.
Virtanen, J. Chip compression and shear as ways to reduce energy consumption in refining. Final report; Hakkeen puristus- ja leikkausvoimakaesittely hiertaemisen energiankulutuksen vaehentaemiskeinona. Loppuraportti. Finland.
Virtanen, J. 1993. "Chip compression and shear as ways to reduce energy consumption in refining. Final report; Hakkeen puristus- ja leikkausvoimakaesittely hiertaemisen energiankulutuksen vaehentaemiskeinona. Loppuraportti." Finland.
@misc{etde_10102539,
title = {Chip compression and shear as ways to reduce energy consumption in refining. Final report; Hakkeen puristus- ja leikkausvoimakaesittely hiertaemisen energiankulutuksen vaehentaemiskeinona. Loppuraportti}
author = {Virtanen, J}
abstractNote = {Reducing energy consumption in softwood chip refining, without adverse effects on pulp quality, has been studied on the Finnish Pulp and Paper Research Institute`s new chip refiner by subjecting the chips to a suitable combination of shear and compressive forces. Defibration has been studied with different refiner plate geometries to enable maximum refiner speed to be used with low energy consumption without reducing the size of the long-fibre fraction. The variables used were the peripheral speed of the refiner and plate pattern in the crushing section. Runs carried out with different plate patterns and refiner speeds showed that the energy needed for defibration varies greatly. With defibration at high speed and 25% below normal energy consumption, the problem was a loss of about 10% in average fibre length. The aim in future investigations will be to develop the plate pattern in the crushing section to find the best compromise between low defibration energy and acceptable fibre length. (orig.)}
place = {Finland}
year = {1993}
month = {Dec}
}