D - Textiles – Paper – 21 – C
Patent
D - Textiles, Paper
21
C
D21C 11/00 (2006.01) D21C 9/10 (2006.01) D21C 11/12 (2006.01)
Patent
CA 2202494
Method for recovering/purifying bleaching effluents from a bleaching plant (20) for cellulose fibre, in which bleaching filtrate (6) is supplied to a gas cooling system adherent to a plant (22) for partial or overstoichiometric combustion of cellulose spent liquors, whereby the water content of the filtrate wholly or partially is converted into steam, which steam subsequently is cooled, after which thereby formed condensate (12) is drawn off for direct or indirect return to the process water system of the pulp mill.
Procédé de récupération/purification d'effluents de blanchiment produits par une installation de blanchiment (20) de fibre de cellulose, selon lequel un filtrat de blanchiment (6) est acheminé vers un système de refroidissement de gaz associé à une installation (22) en vue de la combustion partielle ou surstoechiométrique de liqueurs de cellulose épuisées, la teneur en eau du filtrat étant intégralement ou partialement convertie en vapeur, ladite vapeur étant ensuite refroidie, après quoi le condensat (12) ainsi formé est évacué en vue de son retour direct ou indirect dans le système d'eau de traitement de la fabrique de pâte à papier.
Fetherstonhaugh & Co.
Kvaerner Chemrec Aktiebolag
Kvaerner Pulping Ab
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