University of Oulu

Modelling of pulp characteristics in kraft cooking

Saved in:
Author: Murtovaara, Sakari, Leiviskä, Kauko, Juuso, Esko, Sutinen, Raimo
Organizations: University of Oulu, Faculty of Technology, Department of Process and Environmental Engineering
University of Oulu, Faculty of Technology, Control Engineering Laboratory
University of Oulu, Faculty of Technology, Department of Process and Environmental Engineering
University of Oulu, Faculty of Technology, Control Engineering Laboratory
University of Oulu, Faculty of Technology, Department of Process and Environmental Engineering
University of Oulu, Faculty of Technology, Control Engineering Laboratory
University of Oulu, Faculty of Technology, Department of Process and Environmental Engineering
University of Oulu, Faculty of Technology, Control Engineering Laboratory
Format: eBook
Online Access: PDF Full Text (PDF, 8.9 MB)
Persistent link: http://urn.fi/urn:isbn:9514275047
Language: English
Published: 1999
Publish Date: 2004-09-21
Description:

Abstract

This paper discusses a Kappa-number estimator using different modelling approaches in continuous cooking. Alkaline, total dissolved solids and lignin content are measured on-line from several circulations in a continuous digester. ABB's Cooking Liquor Analyser (CLA 2000) and an on-line Kappa-number measurement were used in this research. With these measurements it is possible to estimate the blow-line Kappa-number long before the end of the cook and to gain a better understanding on the dependence of the Kappa-number on these variables. The developed models will be used in cooking control to reduce the Kappa-number variation.

Artificial neural networks, fuzzy logic, partial least squares method and linguistic equations are used in building a model to map input-output relationships of the measurements.


Series: Control Engineering Laboratory. Report A
ISBN: 951-42-7504-7
ISBN Print: 951-42-5480-5
Issue: 9
Subjects:
Copyright information: This publication is copyrighted. You may download, display and print it for your own personal use. Commercial use is prohibited.