METHOD FOR USING WATER HYDRAULICS IN A PAPER OR BOARD MACHINE

摘要

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 o f application (5) and circulated through the same at least once, after which said water and chemical mixture is recovered (2) and passe d to the stock system (A) of the process as diluted to a suitable concentration.