ADAPTIVE CONSTANT REFINER INTENSITY CONTROL

A method and an apparatus are provided for maintaining a constant refining intensity under varying tonnage rate and applied power conditions to a slurry of paper stock being passed through a disk type refiner. The system utilizes a control strategy and several unique control algorithms which combine...

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Bibliographische Detailangaben
1. Verfasser:	ELLERY, JOHN M., SR
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROLLING CRUSHING, PULVERISING, OR DISINTEGRATING CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL FUNCTIONAL ELEMENTS OF SUCH SYSTEMS MILLING GRAIN MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS PAPER-MAKING PERFORMING OPERATIONS PHYSICS PREPARATORY TREATMENT OF GRAIN FOR MILLING PRODUCTION OF CELLULOSE REGULATING TEXTILES TRANSPORTING TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKINGMACHINE
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Beschreibung
Zusammenfassung:	A method and an apparatus are provided for maintaining a constant refining intensity under varying tonnage rate and applied power conditions to a slurry of paper stock being passed through a disk type refiner. The system utilizes a control strategy and several unique control algorithms which combine to provide a result which relates the speed of rotation of the refiner elements to the power consumed by the drive motor. The present invention is based on intensity which is defined as the net refining power applied divided by the number of bar crossings (refining elements) per unit time. The system is an adaptive control system which operates on the basis of real time measurements of the refiner process.