Modelling of chemical pulp bleaching

V. Tarvo (Corresponding Author), S. Kuitunen, T. Lehtimaa, P. Tervola, E. Räsänen, Tarja Tamminen, J. Aittamaa, T. Vuorinen, K. Henricson

Research output: Contribution to journalArticleScientificpeer-review

9 Citations (Scopus)

Abstract

Conventional pulp bleaching processes consist of the following unit operations: chemical mixing, bleaching reactions (retention towers) and pulp washing. The quality and profitability of chemical pulp bleaching depends on how well one is able to utilise the physico-chemical phenomena (chemical reactions, fluid dynamics, thermodynamics, mass and heat transfer) that determine the performance of these unit operations. This study introduces a predictive pulp bleaching model utilizing physical phenomenon models and chemical reaction kinetics. Our approach provides means to compare the relative importance, benefits, and restrictions of each phenomenon in various pulp bleaching operations. The model also provides a possibility to examine hypotheses concerning the bleaching reaction routes and the role of fast-lived intermediates. The applied phenomenon theories and the parameters required for their utilization are introduced. Examples dealing with the importance of the buffering properties of pulps in chlorine dioxide delignification, and mass transfer limitations between the fibre wall and the bulk suspension are given. The kinetics of hexenuronic acid hydrolysis is used as an example of how the applicability of experimental reaction kinetic information of pulp bleaching reactions can be widened.
Original languageEnglish
Pages (from-to)91 - 101
Number of pages11
JournalNordic Pulp and Paper Research Journal
Volume23
Issue number1
DOIs
Publication statusPublished - 2008
MoE publication typeA1 Journal article-refereed

Fingerprint

chemical pulp
Chemical pulp
bleaching
Bleaching
Pulp
pulp
modeling
reaction kinetics
chemical reactions
mass transfer
Reaction kinetics
chemical reaction
Chemical reactions
Mass transfer
Chemical operations
chemical phenomena
chlorine dioxide
delignification
Delignification
physical phenomena

Keywords

  • Bleaching
  • Computational
  • Delignification
  • Modelling
  • Phenomenon models
  • Pulp suspension
  • Simulation

Cite this

Tarvo, V., Kuitunen, S., Lehtimaa, T., Tervola, P., Räsänen, E., Tamminen, T., ... Henricson, K. (2008). Modelling of chemical pulp bleaching. Nordic Pulp and Paper Research Journal, 23(1), 91 - 101. https://doi.org/10.3183/NPPRJ-2008-23-01-p091-101
Tarvo, V. ; Kuitunen, S. ; Lehtimaa, T. ; Tervola, P. ; Räsänen, E. ; Tamminen, Tarja ; Aittamaa, J. ; Vuorinen, T. ; Henricson, K. / Modelling of chemical pulp bleaching. In: Nordic Pulp and Paper Research Journal. 2008 ; Vol. 23, No. 1. pp. 91 - 101.
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abstract = "Conventional pulp bleaching processes consist of the following unit operations: chemical mixing, bleaching reactions (retention towers) and pulp washing. The quality and profitability of chemical pulp bleaching depends on how well one is able to utilise the physico-chemical phenomena (chemical reactions, fluid dynamics, thermodynamics, mass and heat transfer) that determine the performance of these unit operations. This study introduces a predictive pulp bleaching model utilizing physical phenomenon models and chemical reaction kinetics. Our approach provides means to compare the relative importance, benefits, and restrictions of each phenomenon in various pulp bleaching operations. The model also provides a possibility to examine hypotheses concerning the bleaching reaction routes and the role of fast-lived intermediates. The applied phenomenon theories and the parameters required for their utilization are introduced. Examples dealing with the importance of the buffering properties of pulps in chlorine dioxide delignification, and mass transfer limitations between the fibre wall and the bulk suspension are given. The kinetics of hexenuronic acid hydrolysis is used as an example of how the applicability of experimental reaction kinetic information of pulp bleaching reactions can be widened.",
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Tarvo, V, Kuitunen, S, Lehtimaa, T, Tervola, P, Räsänen, E, Tamminen, T, Aittamaa, J, Vuorinen, T & Henricson, K 2008, 'Modelling of chemical pulp bleaching', Nordic Pulp and Paper Research Journal, vol. 23, no. 1, pp. 91 - 101. https://doi.org/10.3183/NPPRJ-2008-23-01-p091-101

Modelling of chemical pulp bleaching. / Tarvo, V. (Corresponding Author); Kuitunen, S.; Lehtimaa, T.; Tervola, P.; Räsänen, E.; Tamminen, Tarja; Aittamaa, J.; Vuorinen, T.; Henricson, K.

In: Nordic Pulp and Paper Research Journal, Vol. 23, No. 1, 2008, p. 91 - 101.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Modelling of chemical pulp bleaching

AU - Tarvo, V.

AU - Kuitunen, S.

AU - Lehtimaa, T.

AU - Tervola, P.

AU - Räsänen, E.

AU - Tamminen, Tarja

AU - Aittamaa, J.

AU - Vuorinen, T.

AU - Henricson, K.

PY - 2008

Y1 - 2008

N2 - Conventional pulp bleaching processes consist of the following unit operations: chemical mixing, bleaching reactions (retention towers) and pulp washing. The quality and profitability of chemical pulp bleaching depends on how well one is able to utilise the physico-chemical phenomena (chemical reactions, fluid dynamics, thermodynamics, mass and heat transfer) that determine the performance of these unit operations. This study introduces a predictive pulp bleaching model utilizing physical phenomenon models and chemical reaction kinetics. Our approach provides means to compare the relative importance, benefits, and restrictions of each phenomenon in various pulp bleaching operations. The model also provides a possibility to examine hypotheses concerning the bleaching reaction routes and the role of fast-lived intermediates. The applied phenomenon theories and the parameters required for their utilization are introduced. Examples dealing with the importance of the buffering properties of pulps in chlorine dioxide delignification, and mass transfer limitations between the fibre wall and the bulk suspension are given. The kinetics of hexenuronic acid hydrolysis is used as an example of how the applicability of experimental reaction kinetic information of pulp bleaching reactions can be widened.

AB - Conventional pulp bleaching processes consist of the following unit operations: chemical mixing, bleaching reactions (retention towers) and pulp washing. The quality and profitability of chemical pulp bleaching depends on how well one is able to utilise the physico-chemical phenomena (chemical reactions, fluid dynamics, thermodynamics, mass and heat transfer) that determine the performance of these unit operations. This study introduces a predictive pulp bleaching model utilizing physical phenomenon models and chemical reaction kinetics. Our approach provides means to compare the relative importance, benefits, and restrictions of each phenomenon in various pulp bleaching operations. The model also provides a possibility to examine hypotheses concerning the bleaching reaction routes and the role of fast-lived intermediates. The applied phenomenon theories and the parameters required for their utilization are introduced. Examples dealing with the importance of the buffering properties of pulps in chlorine dioxide delignification, and mass transfer limitations between the fibre wall and the bulk suspension are given. The kinetics of hexenuronic acid hydrolysis is used as an example of how the applicability of experimental reaction kinetic information of pulp bleaching reactions can be widened.

KW - Bleaching

KW - Computational

KW - Delignification

KW - Modelling

KW - Phenomenon models

KW - Pulp suspension

KW - Simulation

U2 - 10.3183/NPPRJ-2008-23-01-p091-101

DO - 10.3183/NPPRJ-2008-23-01-p091-101

M3 - Article

VL - 23

SP - 91

EP - 101

JO - Nordic Pulp and Paper Research Journal

JF - Nordic Pulp and Paper Research Journal

SN - 0283-2631

IS - 1

ER -