D - Textiles – Paper – 21 – F
Patent
D - Textiles, Paper
21
F
D21F 1/08 (2006.01) D21F 1/06 (2006.01) D21F 1/66 (2006.01) D21G 9/00 (2006.01)
Patent
CA 2439232
A method and arrangement for controlling the so-called short circulation in a paper machine or the like, in which the control of at least one property of the diluted fiber-containing pulp conducted to the headbox is based on consistency measurement or determination in paper, high-consistency fiber- containing pulp, diluted pulp and/or white water. In the control is determined the amount of fiberbased fines in high-consistency fiber-based pulp, diluted fiber-based pulp and/or white water, and the result obtained is used for controlling at least one property of the fiber-containing pulp to be conveyed to the headbox.
L'invention concerne un procédé et un dispositif de commande de la dénommée circulation courte dans une machine à papier ou analogue, par lesquels la commande d'au moins une propriété de la pâte fibreuse diluée acheminée à la caisse d'arrivée est basée sur la mesure ou la détermination de la consistance du papier, de la pâte fibreuse à haute consistance, de la pâte diluée et/ou des eaux blanches. La commande détermine la quantité de fines fibreuses dans la pâte fibreuse à haute consistance, la pâte fibreuse diluée et/ou les eaux blanches, et le résultat obtenu est utilisé pour commander au moins une propriété de la pâte fibreuse à acheminer à la caisse d'arrivée.
Hietaniemi Matti
Metso Automation Oy
Sim & Mcburney
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