METHOD OF TREATING WASTE PLASTIC

• Main Authors: PAASIKALLIO, Ville, KETTUNEN, Mika, KOIVUSALMI, Eija, AALTO, Pekka
• Format: Patent
• Language: English; French
• Published: 26.01.2023
• Subjects: CHEMISTRY; CRACKING HYDROCARBON OILS; FUELS; LUBRICANTS; METALLURGY; MINERAL WAXES; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; TECHNICAL GASES CONTAINING CARBON MONOXIDE

A method of upgrading liquefied waste plastic (LWP) to a mixture of purified hydrocarbons is hereby provided. The method comprises the steps of providing a feed comprising liquefied waste plastic (LWP) and a vacuum gas oil (VGO) stream and/or a heavy gas oil (HGO) stream to form a mixed stream, subjecting said mixed stream to hydrotreatment for removal of impurities and to produce a hydrotreated stream, subjecting the hydrotreated stream to hydrocracking to produce a hydrocracked stream comprising a mixture of purified hydrocarbons and fractionating the hydrocracked stream. L'invention concerne un procédé de valorisation de déchets plastiques liquéfiés (LWP) en un mélange d'hydrocarbures purifiés. Le procédé comprend les étapes consistant à fournir une charge comprenant des déchets plastiques liquéfiés (LWP) et un flux de gazole sous vide (VGO) et/ou un flux de pétrole lourd (HGO) pour former un flux mixte, soumettre ledit flux mixte à un hydrotraitement pour éliminer les impuretés et produire un flux hydrotraité, soumettre le flux hydrotraité à un hydrocraquage pour produire un flux hydrocraqué comprenant un mélange d'hydrocarbures purifiés et fractionner le flux hydrocraqué.