D - Textiles – Paper – 21 – C
Patent
D - Textiles, Paper
21
C
D21C 7/14 (2006.01) D21C 3/22 (2006.01) D21C 3/24 (2006.01) D21C 7/00 (2006.01)
Patent
CA 2740196
The invention concerns a method for influencing the flow from a strainer construction in a continuous digester. In order to avoid clogging of the withdrawal compartment (10a) in the strainer construction, an additive (Ch) that counteracts precipitation processes is added directly to the withdrawal compartment while the cooking fluid is being withdrawn from the withdrawal compartment. The addition of chemicals can take place at the same time as the withdrawn cooking fluid is withdrawn from the digester and the strainer construction, or while the withdrawn cooking fluid is fully or partially recirculated back to the withdrawal compartment.
Linvention concerne un procédé destiné à influencer lécoulement provenant dune structure d'épurateur dans un lessiveur en continu. Afin déviter un engorgement du compartiment de prélèvement (10a) dans la structure d'épurateur, un additif (Ch) contrecarrant les processus de précipitation est ajouté directement au compartiment de prélèvement tandis que le fluide de cuisson est prélevé du compartiment de prélèvement. Lajout de produits chimiques peut avoir lieu au moment même où le fluide de cuisson prélevé est prélevé du lessiveur et de la structure d'épurateur, ou pendant que le fluide de cuisson prélevé est entièrement ou en partie remis en circulation vers le compartiment de prélèvement.
Fetherstonhaugh & Co.
Metso Paper Sweden Ab
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