Process for the treatment of plastics pyrolysis oils including a hydrogenation stage and a hot separation

• Main Authors: BONNARDOT, JEROME, CARRASCO HERNANDEZ, SHEYLA, DECOTTIGNIES, DOMINIQUE, WEISS, WILFRIED, RIBAS SANGUESA, INIGO, SANTOS MARTINEZ, MARTIN
• Format: Patent
• Language: Chinese; English
• Published: 16.09.2023
• 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

The present invention relates to a process for the treatment of a plastics pyrolysis oil, comprising: (a) the hydrogenation of said feedstock as a mixture with at least a part of the liquid effluent resulting from stage (c) and in the presence of hydrogen and of a catalyst at a temperature between 140 and 340 DEG C; (b) the hydrotreating of said hydrogenated effluent in the presence of hydrogen and of a catalyst; (c) a separation of the hydrotreated effluent operated at high temperature and high pressure, in order to obtain a gaseous effluent and a liquid effluent, a part of which is recycled upstream of stage (a), (d) a separation operated at low temperature and high pressure and fed with the gaseous effluent and the other part of the liquid effluent resulting from stage (c) and an aqueous solution, in order to obtain a hydrocarbon effluent.