D - Textiles – Paper – 21 – F
Patent
D - Textiles, Paper
21
F
D21F 1/66 (2006.01) D21C 9/10 (2006.01) D21G 9/00 (2006.01) D21H 23/78 (2006.01) D21H 23/08 (2006.01)
Patent
CA 2456538
Long term storage of raw-material components and pulp at paper mills can result in undesirable changes in chemical state, with resulting uncontrollable reactions. The present invention relates to a method in a paper or pulp process to control the chemical state of the pulp and circulation water system (10). In the said process one or more raw-material components (PROCESS WATER, TMP, PULP, REJECT) diluted in liquid, possible fillers, and one or more additives are mixed to form stock. In the method, the electro-chemical state of at least one raw-material component (PROCESS WATER, TMP, PULP, REJECT) and/or the stock is regulated, without the regulation substantially affecting the pH values of the raw-material components (PROCESS WATER, TMP, PULP, REJECT) and/or of the stock.
La présente invention a trait à un procédé dans un traitement de papier ou de pâte pour le contrôle de l'état chimique de la pâte et un système d'eau de circulation (10). Dans ledit traitement un ou plusieurs constituants de matière première (EAU DE FABRICATION, PATE THERMOMECANIQUE, PATE, DECHETS) dilués dans un liquide, des charges éventuelles, et un ou des additifs sont mélangés pour constituer la suspension de la pâte. Dans le procédé, on effectue l'ajustement de l'état électrochimique d'au moins un constituant de matière première (EAU DE FABRICATION, PATE THERMOMECANIQUE, PATE, DECHETS) et /ou la suspension de la pâte sans que l'ajustement n'affecte les valeurs de pH des constituants de matière première (EAU DE FABRICATION, PATE THERMOMECANIQUE, PATE, DECHETS) et/ou de la pâte.
Gowling Lafleur Henderson Llp
Liqum Oy
Liqum Paper Oy
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