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1. WO2009012555 - METHOD AND APPARATUS FOR SEPARATING WASTE PRODUCTS FROM CELLULOSE FIBRES IN A PAPER RECYCLING PROCESS

Publication Number WO/2009/012555
Publication Date 29.01.2009
International Application No. PCT/CA2007/001306
International Filing Date 24.07.2007
IPC
D21C 5/02 2006.01
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
5Other processes for obtaining cellulose, e.g. cooking cotton linters
02Working-up waste paper
D21C 9/00 2006.01
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
9After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters
D21C 9/08 2006.01
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
9After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters
08Removal of fats, resins, pitch, or waxes
CPC
D21B 1/327
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
BFIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
1Fibrous raw materials or their mechanical treatment
04by dividing raw materials into small particles, e.g. fibres
12by wet methods, by the use of steam
30Defibrating by other means
32of waste paper
325de-inking devices
327using flotation devices
D21C 5/02
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
5Other processes for obtaining cellulose, e.g. cooking cotton linters
02Working-up waste paper
Y02W 30/64
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
30Technologies for solid waste management
50Reuse, recycling or recovery technologies
64Paper recycling
Applicants
  • LANGNER, Herbert, Gunther, Joachim [CA]/[CA]
Inventors
  • LANGNER, Herbert, Gunther, Joachim
Agents
  • RICHES MCKENZIE & HERBERT LLP
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS FOR SEPARATING WASTE PRODUCTS FROM CELLULOSE FIBRES IN A PAPER RECYCLING PROCESS
(FR) PROCÉDÉ ET APPAREIL POUR SÉPARER DES DÉCHETS DE FIBRES DE CELLULOSE DANS UN PROCESSUS DE RECYCLAGE DE PAPIER
Abstract
(EN)
A contaminate separation apparatus for use in separating contaminant materials from cellulose and/or paper fibres in a paper recycling process includes a reservoir for receiving a waste paper slurry therein. The reservoir is provided with an inlet opening for the input of the slurry, one or more fibre discharge outlets or passages, and at least one waste outlet positioned vertically above the fibre discharge outlet opening. An agitator provided in a lower portion of the reservoir generates differential flow currents within the reservoir, to selectively divert plastics, waxes, adhesives and/or other sticky waste mateπals outwardly towards the waste outlet, while providing a flow of suspended paper and/or cellulose fibres to one or more of the fibre discharge outlets.
(FR)
L'invention concerne un appareil de séparation de contaminants destiné à être utilisé pour séparer des matériaux contaminants de fibres de cellulose et/ou de papier dans un processus de recyclage de papier, lequel appareil de séparation de contaminants comprend un réservoir destiné à recevoir une suspension de déchets de papier. Le réservoir est équipé d'une ouverture d'admission pour l'entrée de la suspension, d'un ou plusieurs passages ou orifices d'évacuation des fibres, et d'au moins un orifice de sortie de déchets positionné verticalement au-dessus de l'ouverture d'évacuation des fibres. Un agitateur disposé dans une partie inférieure du réservoir génère des courants de flux différentiels à l'intérieur du réservoir de façon à dévier sélectivement des matières plastiques, des cires, des adhésifs et/ou d'autres déchets collants vers l'extérieur en direction de l'orifice de sortie des déchets, tout en envoyant un écoulement de fibres de papier et/ou de cellulose en suspension vers un ou plusieurs des orifices d'évacuation des fibres.
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