METHOD OF CONTROLLING WOOD PULP PRODUCTION IN A CHIP REFINER

METHOD OF CONTROLLING WOOD PULP PRODUCTION IN A CHIP REFINER

A method has been developed that estimates from the on line measurements of readily available process variables the proportion of the mass of fiber in the refining zone of a chip refiner relative to the mass with a full refining zone. This estimate of the filling factor is used to determine the marg...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ROCHE, ALAIN, MILES, KEITH, ETTALEB, LAHOUCINE
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ACCESSORIES FOR PAPER-MAKING MACHINES
CALENDERS
PAPER-MAKING
PRODUCTION OF CELLULOSE
TEXTILES
TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKINGMACHINE
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Beschreibung
Zusammenfassung:A method has been developed that estimates from the on line measurements of readily available process variables the proportion of the mass of fiber in the refining zone of a chip refiner relative to the mass with a full refining zone. This estimate of the filling factor is used to determine the margin available to load the refiner and the control action needed to avoid abnormal operation.