Measurement and prediction of dewatering characteristics for mechanical pulps using optical fibre analyzers

Nordin, Lisa,1981-Mittuniversitetet,Institutionen för naturvetenskap, teknik och matematik (-2012),FSCN – Fibre Science and Communication Network (author)

The aim of this work was to obtain an on-line measurement for dewatering behaviour in the wire section based on fibre and fines characteristics. Four laboratory dewatering equipments were compared and the fibre characteristics were measured by means of optical fibre analyzers. The results show that rough correlations do appear to exist between the dewatering equipments; however they rank the pulps differently depending on the raw wood material used and whether the refining conditions are mild or harsh. The prediction models based on fibre characteristics showed a high degree of statistical accuracy. The descriptions, however, proved not to be sufficiently good with regards to the dewatering behaviour for them to be used in relation to on-line applications. This might have been because consideration was not given to some important variables which do, in fact, have a significant impact on the drainability. These variables could include physical fibre properties or others that are not measured, or properties that, at present, are unable to be measured at a sufficient resolution.

TEKNIK OCH TEKNOLOGIER Materialteknik Pappers-, massa- och fiberteknik hsv//swe
ENGINEERING AND TECHNOLOGY Materials Engineering Paper, Pulp and Fiber Technology hsv//eng
Dewatering equipment; Drainability; Fibre properties; Not given; On-line applications; On-line measurement; Optical fibre; Prediction model; Refining conditions; Significant impacts; Statistical accuracy; Wire section; Wood raw material
Cellulose and paper engineering
Cellulosa- och pappersteknik

O'Nils, Mattias,1969-Mittuniversitetet,Institutionen för informationsteknologi och medier (-2013),Electronics design division(Swepub:miun)matoni (author)
Engstrand, PerMittuniversitetet,Institutionen för naturvetenskap, teknik och matematik (-2012),FSCN – Fibre Science and Communication Network(Swepub:miun)pereng (author)
Bäck, RolandSCA R&D Center (author)
Ferritsius, OlofPöyry (author)
Sandberg, ChristerHolmen Paper Development Centre (author)
MittuniversitetetInstitutionen för naturvetenskap, teknik och matematik (-2012) (creator_code:org_t)

In:Proceedings - 2009 International Mechanical Pulping Conference, IMPC 2009, s. 309-316

By the author/editor: Nordin, Lisa, 19 ...; O'Nils, Mattias, ...; Engstrand, Per; Bäck, Roland; Ferritsius, Olof; Sandberg, Christ ...

About the subject

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

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