Old or waste plastics treatment process

Details Old or waste plastics treatment process Old or waste plastics treatment process

C - Chemistry, Metallurgy

10

G

C10G 1/00 (2006.01) C08J 11/12 (2006.01) C10G 1/10 (2006.01)

Patent

CA 2219974

According to the process described, old or waste plastics are depolymerized into a pumpable phase and a volatile phase to allow recovery of chemical raw materials and liquid fuel components. The volatile phase is separated into a gaseous phase and a condensate. In order to simplify the process in comparison with the state of the art, the depolymerised product remaining after the volatile phase is separated is also heated together with the condensate or condensate fractions in the presence of hydrogen under pressure and is subjected to hydrotreating, after non-boiling components are removed, to produce syncrude.

Selon le procédé décrit, des matières plastiques usagées ou des déchets de matières plastiques sont dépolymérisés en une phase pompable et une phase volatile pour permettre la récupération de matières premières chimiques et de composants carburants liquides. La phase volatile est séparée en une phase gazeuse et en un condensat. Afin que le procédé soit simplifié par rapport à l'état de la technique, le produit dépolymérisé restant après la séparation de la phase volatile est lui aussi chauffé avec le condensat ou des fractions du condensat en présence d'hydrogène sous pression et, après séparation des composants qui n'entrent pas en ébullition, est soumis à un hydrotraitement afin de produire du brut synthétique.

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