D - Textiles – Paper – 21 – C
Patent
D - Textiles, Paper
21
C
D21C 9/18 (2006.01) D21F 3/00 (2006.01) D21F 9/00 (2006.01) D21F 9/02 (2006.01)
Patent
CA 2351392
The invention relates to a pulp-drying apparatus, comprising a wet end, including at least a former section (2), which is supplied with pulp to be dried from a headbox (1) or the like, and a press assembly, comprising at least one press section (20, 30) through which a web (W) formed over the former section is adapted to travel. According to the invention, the pulp web (W) has its passage arranged as a closed transfer through the entire wet end. The invention relates also to a method for starting a pulp-drying machine and process, and to a method for increasing the dry content of pulp by means of a pulp-drying machine.
La présente invention concerne un dispositif permettant de sécher la pâte à papier, qui comprend une partie humide, comportant au moins une section de mise en forme (2), qui est alimentée en pâte à papier qu'un tambour (1) ou un élément similaire doit sécher, et un ensemble de presse. Ce dernier comprend au moins une section presse (20, 30) au travers de laquelle une bande (W) formée dans la section de mise en forme se déplace. Selon l'invention, le passage de la bande de la pâte (W) s'effectue en milieu fermé dans toute la partie humide. Cette invention concerne aussi un procédé permettant de démarrer une machine à sécher la pâte à papier et son processus, et un procédé permettant d'augmenter le contenu sec de la pâte à l'aide d'une machine à sécher la pulpe.
Koskinen Jorma
Kurki Jarmo
Pakkala Ilkka
Savia Risto
Tahti Harri
Gowling Lafleur Henderson Llp
Metso Paper Inc.
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