Arrangement and method for recovery of energy in a paper...

D - Textiles – Paper – 21 – F

Patent

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Details

D21F 1/66 (2006.01) D21F 1/00 (2006.01) D21F 7/00 (2006.01) D21F 9/00 (2006.01)

Patent

CA 2396546

The invention relates to a method of recovering energy in a forming section of a papermaking or boardmaking machine, wherein stock from a headbox (2) is fed into a forming zone of a forming section, said forming zone including at least one looped forming fabric (6; 10) curving along a convex surface of a support member, and water is drained from the stock (21) through said at least one forming fabric (6; 10) in the forming zone to form a paper or board web (W), the water passing through said at least one fabric (6; 10) being thrown out from the forming zone and possessing kinetic energy, characterized by placing a movable component (14) in the water thrown out from the forming zone, so as to cause the water to move the component (14), and thereby recovering part of the kinetic energy. The invention also relates to an arrangement in a papermaking or boardmaking machine.

L'invention concerne un procédé de récupération d'énergie dans une section de formation d'une machine à papier ou à carton, dans laquelle la matière première d'une caisse d'arrivée (2) est amenée sur une zone de répartition d'une section de formation, cette zone comprenant au moins une toile de formation sans fin (6; 10) tournant le long de la surface convexe d'un élément support, l'eau étant drainée de la matière première (21) à travers cette toile de formation (6; 10) dans la zone de répartition afin de former une bande de papier ou de carton (W). L'eau qui passe à travers cette toile (6; 10) est projetée hors de la zone de répartition et possède une énergie cinétique. L'invention est caractérisée par le placement dans la projection d'eau d'un composant mobile (14), ce qui permet, en raison de la mise en mouvement de ce composant par la projection d'eau, de récupérer une partie de l'énergie cinétique. L'invention concerne aussi un arrangement dans une machine à papier ou à carton.

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