D - Textiles – Paper – 21 – C
Patent
D - Textiles, Paper
21
C
D21C 11/00 (2006.01) D21C 9/02 (2006.01) D21C 9/10 (2006.01)
Patent
CA 2360638
The present invention relates to a method of treating pulp. The method according to the invention is particularly well suited for intensifying the washing of fiber suspensions in the wood processing industry in cases where liquid recycled from later washing stages is used as washing liquid. According to a preferred embodiment of the invention part of the washing liquid to be fed to a washer is separated to form a separate flow, which is divided into a cleaner and a fouler fraction that are returned to appropriate locations of the process.
La présente invention concerne un procédé de traitement de la pâte à papier qui consiste, en particulier, à intensifier le lavage des suspensions fibreuses dans l'industrie du traitement du bois, dans les cas où un liquide recyclé dans des étapes de lavage postérieures est utilisé comme liquide de lavage. Selon un mode de réalisation de l'invention, une partie du liquide de lavage introduit dans un dispositif de lavage est séparée afin de former un flux séparé et divisé en une fraction épurée et une fraction non épurée, celles-ci étant renvoyées vers des points appropriés du processus de traitement.
Pikka Olavi
Tervola Pekka
Vehmaa Janne
Andritz Oy
Andritz-Ahlstrom Oy
Gowling Lafleur Henderson Llp
LandOfFree
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