Method and apparatus for drying a fibrous web

Details Method and apparatus for drying a fibrous web Method and apparatus for drying a fibrous web

D - Textiles, Paper

21

F

D21F 5/18 (2006.01) D21F 5/20 (2006.01) D21F 9/00 (2006.01) D21F 11/14 (2006.01)

Patent

CA 2673182

In a method for drying a fibrous material web, in particular a web of paper, cardboard, or tissue, the running fibrous material web is acted upon with hot air from a hot air hood in the region of a preceding specifiable drying zone and, after the drying zone, is supplied to a downstream drying cylinder, in particular, to a Yankee cylinder, to which an additional hood is assigned and in the region of which the fibrous material web is dried further. In the process, the hot air for the hot air hood assigned to the preceding drying zone is taken at least partly from the hood assigned to the downstream drying cylinder.

L'invention concerne un procédé de séchage d'une bande de matière fibreuse, en particulier une bande de papier, de carton ou de tissu, au cours duquel la bande de matière fibreuse continue est exposée, dans la région d'une zone de séchage prédéterminable antérieure, à de l'air chaud provenant d'une manche à air chaud et amenée à un cylindre-sécheur situé en aval, après la zone de séchage, en particulier un cylindre frictionneur, auquel est associée une autre manche et dans la zone duquel la bande de matière fibreuse est davantage séchée. L'air chaud pour la manche à air chaud associée à la zone de séchage antérieure est prélevé au moins partiellement de la manche associée au cylindre-sécheur situé en aval.

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