Procedure for controlling process conditions in refiners

Details Procedure for controlling process conditions in refiners Procedure for controlling process conditions in refiners

B - Operations, Transporting

02

C

B02C 7/14 (2006.01) B02C 7/12 (2006.01) D21B 1/14 (2006.01) D21D 1/30 (2006.01) G01B 7/14 (2006.01)

Patent

CA 2759089

There is a need to measure process variables spatially directly in the refining zone of refiners in the pulp and paper industry. This is accomplished by the invention and considers a control procedure where the difference between the distributed axial force and the distributed steam force for high consistency refiners alternatively the liquid and the pulp phase related forces for low consistency refiners, along the radius of the segments is used to prevent fiber cutting and plate clash of the segments. The procedure is also applicable to continuous control of the refining process near machine limits.

Il existe un besoin pour mesurer des variables de traitement dans l'espace, directement dans la zone de raffinage de raffineurs, dans l'industrie de la pâte à papier et du papier. Ceci est accompli par l'invention et prend en compte un procédé de contrôle où la différence entre la force axiale distribuée et la force de vapeur d'eau distribuée pour des raffineurs à haute consistance ou les forces se rapportant au liquide et à la phase de pâte pour des raffineurs à faible consistance, conjointement avec le rayon des segments, sont utilisées pour empêcher un découpe des fibres et un choc entre les plaques des segments. Le procédé est également applicable à un contrôle continu du procédé de raffinage près des limites de la machine.

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