D - Textiles – Paper – 21 – C
Patent
D - Textiles, Paper
21
C
D21C 7/14 (2006.01) D21C 7/00 (2006.01)
Patent
CA 2705574
The invention concerns a digester screen for a continuous digester in which cooked cellulose pulp is produced. The digester screen comprises a number of screen bars (41a, 42c, 42a) arranged vertically in the continuous digester and having withdrawal slots (S) between the fixed screen bars, through which withdrawal slots cooking fluid can be withdrawn from the column of pulp (P) of the digester. By having every second screen bar (42a, 42c) fixed arranged and recessed a distance (D) relative to the neighbouring screen bar (41 a), an increased withdrawal capacity for the screen is obtained.
L'invention porte sur un tamis de lessiveur pour un lessiveur continu dans lequel une pâte de cellulose cuite est produite. Le tamis de lessiveur inclut un certain nombre de barres de tamis (41a, 42c, 42a) agencées verticalement dans le lessiveur continu et avec des fentes de retrait (S) entre les barres de tamis fixes, à travers lesquelles fentes de retrait un fluide de cuisson peut être retiré de la colonne de pâte (P) du lessiveur. Une barre de tamis (42a, 42c) sur deux étant fixée, agencée et renfoncée à une distance (D) de la barre de tamis voisine (41a), une capacité de retrait accrue du tamis est obtenue.
Fetherstonhaugh & Co.
Metso Fiber Karlstad Ab
Metso Paper Sweden Aktiebolag
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