University of Oulu

Kappa number prediction based on cooking liquor measurements

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Author: Lemmetti, Antti1; Leiviskä, Kauko2; Sutinen, Raimo1
Organizations: 1ABB Industry, Pulp & Paper, Oulu
2University of Oulu, Faculty of Technology, Control Engineering Laboratory
Format: ebook
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 0.6 MB)
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Language: English
Published: 1998
Publish Date: 2004-09-21


CLA 2000 Cooking Liquor Analyzer gives on-line information on cooking reactions during a cook. Alkali, total dissolved solids and lignin contents are measured during individual cooks in a batch digester house and from several circulations in a continuous digester. Mill trials show good correlations between CLA 2000 measurements and laboratory analyses. Using these measurements it is possible to predict kappa number values before the end of the cook in a batch digester or to alter cooking conditions in a continuous digester to obtain desired kappa number. In addition to kappa number prediction CLA 2000 can be utilised in alkali dosage and residual alkali control.

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Series: Control Engineering Laboratory. Report A
ISBN: 951-42-7500-4
ISBN Print: 951-42-4964-X
Issue: 5
Copyright information: © University of Oulu, 2004. This publication is copyrighted. You may download, display and print it for your own personal use. Commercial use is prohibited.