Method and means for paper pulp filtering

Details Method and means for paper pulp filtering Method and means for paper pulp filtering

D - Textiles, Paper

21

D

D21D 5/02 (2006.01)

Patent

CA 2362500

The invention concerns a method for filtering paper pulp using an apparatus comprising a rotor and a stator; one of the two, the filter (1), comprises perforations shaped like slots or holes and the other, the backwashing filter, comprises means for generating pressure pulses, consisting in countering the gradual clogging of the perforations of the filter and the gradual flocculation of the pulp between the rotor and the stator by producing deflocculation zones and/or increasing the speed between the pulp and the backwashing filter.

Procédé pour la filtration de pâte à papier au moyen d'un appareil qui comporte un rotor et un stator; l'un des deux, le filtre (1), comporte des perçages de types fentes ou trous et l'autre, le décolmateur, comporte des moyens destinés à générer des pulsations de pression; consistant à contrer le colmatage progressif des perçages du filtre et la floculation progressive de la pâte lors du cheminement de la pâte entre le rotor et le stator en créant des zones de défloculation et/ou d'augmentation de la vitesse relative entre la pâte et le décolmateur.

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