A screen having inclined slots for use in a continuous digester

Details A screen having inclined slots for use in a continuous digester A screen having inclined slots for use in a continuous digester

D - Textiles, Paper

21

C

D21C 7/00 (2006.01) D21D 5/16 (2006.01)

Patent

CA 2213475

The present invention relates to a screen primarily intended to be used for passing liquid through a layer of pulp. The invention is advantageously employed in removing cooking liquid when producing chemical cellulose pulp or paper pulp in a continuous digester. It is characteristic of the screen that it comprises a frame (12) and a screen plate (14) provided with slots and secured to the frame and that the inclination angle .alpha. of the slots relative to the horizontal direction is 30 - 60 degrees.

Cette invention a trait à un écran essentiellement conçu pour le passage d'un liquide à travers une couche de pâte. Cette invention s'applique avantageusement s'agissant de faire disparaître la lessive de cuisson lors de la fabrication de pulpe de cellulose ou de pâte à papier dans un lessiveur en continu. Cet écran a pour particularité d'être constitué d'un châssis (12) et d'une plaque (14) fixée à celui-ci et dont les fentes qu'elle comporte sont inclinées par rapport à l'horizontale selon un angle 'alpha' d'une valeur comprise entre 30 et 60 degrés.

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