Method for using water hydraulics in a paper or board machine

Details Method for using water hydraulics in a paper or board machine Method for using water hydraulics in a paper or board machine

D - Textiles, Paper

21

F

D21F 7/00 (2006.01) D21F 1/00 (2006.01) D21F 1/66 (2006.01) D21F 3/02 (2006.01) D21G 1/02 (2006.01)

Patent

CA 2393210

The invention relates to a method for using water hydraulics in a paper or board machine, in particular in applica-tions requiring lubrication and in the like in which an operating medium is subjected to pressure. According to the invention, some chemical used in the stock system (A) of the process is mixed with the water used in water hydraulics before the water is passed to a site of application (5) in order to raise the viscosity of the water and chemical mixture to a level required by the site of application (5). The water and chemical mixture is passed (3in) after that to the site of application (5) and circulated through the same at least once, after which said water and chemical mixture is recovered (2) and passed to the stock system (A) of the process as diluted to a suitable concentration.

L'invention concerne un procédé qui permet d'utiliser des dispositifS hydrauliques à eau dans une machine de fabrication de papier ou de carton, notamment dans des applications nécessitant la lubrification ou dans d'autres applications analogues dans lesquelles une source d'énergie est soumise à pression. Selon l'invention, des produits chimiques utilisés dans le système de la pâte (A) de l'appareil sont mélangés avec l'eau utilisée dans des dispositifs hydrauliques à eau avant que l'eau ne soit envoyée à un emplacement d'utilisation (5) afin d'élever la viscosité de l'eau et du mélange chimique à un niveau requis par ledit emplacement d'utilisation (5). L'eau contenant le mélange chimique (3in) est ensuite envoyée vers l'emplacement d'utilisation (5) à travers lequel elle est circulée au moins une fois, après quoi elle est récupérée (2) et transmise au système de la pâte (A) de l'appareil en tant que substance diluée à une concentration appropriée.

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