Method and system for utilising waste

B - Operations – Transporting – 03 – B

Patent

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Details

B03B 9/06 (2006.01) D21B 1/02 (2006.01) D21B 1/32 (2006.01) D21C 5/02 (2006.01)

Patent

CA 2409543

The invention relates to a method and a system for utilising waste that contains fibres and combustible material. Waste is slushed in a continuous- operation high-consistency pulper (10) to suspend in water the fibres contained in the waste, and from the pulper (10) are discharged substantially continuously fibre suspension (P1) through a screen plate and non-defibrable material (R1) by means of a mechanical transfer device (22). The fibre suspension (P1) is sorted and cleaned for use as raw material in paper or board. The non-defibrable material (R1) and the rejects (R2-R4) separated from the fibre suspension (P1) in the sorting and cleaning stages are used as fuel in energy production and/or utilised as raw material.

L'invention concerne un procédé et un système d'utilisation des déchets contenant des fibres et des matières combustibles. Les déchets sont triturés dans une pulpeuse à haute consistance et à opération continue (10) afin de suspendre dans l'eau les fibres contenues dans les déchets. Une suspension fibreuse (P1) est déchargée de manière sensiblement continue du pulpeur (10) à travers une tôle perforée, et les matières ne pouvant être défibrées (R1) sont déchargées au moyen d'un dispositif de transfert mécanique (22). La suspension fibreuse (P1) est triée et nettoyée pour être utilisée comme matière première dans le papier ou le carton. Les matières ne pouvant être défibrées (R1) et les rejets (R2-R4) séparés de la suspension fibreuse (P1) dans les étapes de triage et de nettoyage sont utilisés dans la production d'énergie et/ou comme matières premières.

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