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Pulp property devel...
Pulp property development Part III: Fiber residence time and consistency profile impact on specific energy and pulp properties
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- Karlström, Anders, 1958 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology,Chalmers University of Technology, Göteborg
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- Hill, J. (författare)
- QualTech AB, Tyringe
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- Ferritsius, Olof (författare)
- Mittuniversitetet,Avdelningen för kemiteknik
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- Ferritsius, Rita (författare)
- Mittuniversitetet,Avdelningen för kemiteknik
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(creator_code:org_t)
- 2018-07-19
- 2016
- Engelska.
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Ingår i: Nordic Pulp and Paper Research Journal. - : Walter de Gruyter GmbH. - 2000-0669 .- 0283-2631. ; 31:2, s. 300-307
- Relaterad länk:
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https://doi.org/10.3...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- This paper focuses on the pulp properties obtained from ThermoMechanical Pulp (TMP) CD refiners. Undersampled pulp variables are expanded into an oversampled set of process data, which makes it possible to analyze pulp properties in a dynamic time frame. It is shown that, in order to gain deeper insight into the defibration/fibrillation at a specific energy input, one needs to know the fiber residence time and the consistency profile. Moreover, the fiber residence time in the flat zone (FZ) and conical zone (CD) are intertwined with the consistency out from FZ and CD. Together with an external variable (production), these internal variables are essential for predicting the pulp properties. It is also shown that internal process conditions from different test series can be manipulated in the operating window using a low-frequency gain description obtained from an ARX model. The same mapping procedure can be applied to pulp and handsheet properties (in this paper represented by the tensile index), and this opens for implementation of new optimization routines to find more energy efficient operating points while maintaining pre-specified pulp quality.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Pappers-, massa- och fiberteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Paper, Pulp and Fiber Technology (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering (hsv//eng)
Nyckelord
- quality
- helich wg
- TMP refiners
- Piecewise linear functions
- tmp refining processes
- p78
- 1972
- optimization
- Materials Science
- v73
- Pulp quality models
- pulp and paper magazine of canada
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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