Device for depolymerising old and waste plastics

C - Chemistry – Metallurgy – 08 – J

Patent

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Details

C08J 11/12 (2006.01) B09B 3/00 (2006.01) C10B 53/07 (2006.01) C10G 1/10 (2006.01)

Patent

CA 2190389

The invention relates to a device for depolymerizing used and waste plastics, comprising a closed reactor and a circulation system the mildly heating of the reactor contents connected to the reactor, as well as to a process for depolymerizing used and waste plastics. To protect the circulation system from erosion by solid particles contained in the reactor contents, the reactor is designed so that the reactor contents drawn off into the circulation system traverse a riser section integrated into the reactor for removing fairly coarse solid particles having correspondingly settling rate before entry into the take-off line.

Un dispositif de dépolymérisation de matières plastiques usagées et de récupération comprend un réacteur fermé et un système de recyclage relié au réacteur qui sert à chauffer délicatement le contenu du réacteur. Afin de protéger le système de recyclage de l'érosion causée par des particules solides faisant partie du contenu du réacteur, le réacteur comprend une section montante de séparation des grosses particules solides à travers laquelle le contenu du réacteur qui pénètre dans le système de recyclage s'écoule à une vitesse de dépôt accrue avant son entrée dans le conduit de décharge. L'invention concerne également un procédé de dépolymérisation de matières plastiques usées et résiduelles.

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