METHODS FOR DEOXYGENATING BIOMASS-DERIVED PYROLYSIS OILS

• Main Authors: ABRAHAMIAN, JENNIFER, F, TRAYNOR, THOMAS, BRANDVOLD, TIMOTHY, A
• Format: Patent
• Language: English; French
• Published: 09.02.2012
• Subjects: ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; CHEMISTRY; CRACKING HYDROCARBON OILS; FIRELIGHTERS; FUELS; FUELS NOT OTHERWISE PROVIDED FOR; LIQUEFIED PETROLEUM GAS; LUBRICANTS; METALLURGY; MINERAL WAXES; NATURAL GAS; 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; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K; TECHNICAL GASES CONTAINING CARBON MONOXIDE

Methods for deoxygenating treated biomass-derived pyrolysis oil are provided. The treated biomass-derived pyrolysis oil is exposed to a catalyst having a neutral catalyst support such as a non-alumina metal oxide support, a theta alumina support, or both. The non-alumina metal oxide support may be a titanium oxide (TiO2) support, a silicon oxide support, a zirconia oxide (ZrO2) support, a niobium oxide (Nb2O5) support, or a support having a mixture of non-alumina metal oxides. The catalyst may include a noble metal or a Group VIII non-noble metal and a Group VIB non-noble metal on the neutral catalyst support. The treated biomass-derived pyrolysis oil is introduced into a hydroprocessing reactor in the presence of the catalyst under hydroprocessing conditions to produce low oxygen biomass-derived pyrolysis oil. Cette invention concerne des procédés de désoxygénation d'une huile de pyrolyse traitée issue de la biomasse. L'huile de pyrolyse traitée issue de la biomasse est exposée à un catalyseur comportant un support neutre tel qu'un support d'oxyde de métal sans alumine, un support d'alumine thêta, ou les deux. Le support d'oxyde de métal sans alumine peut être un support d'oxyde de titane (TiTO2), un support d'oxyde de silicium, un support de zircone (ZrO2), un support d'oxyde de niobium (Nb2O5), ou un support renfermant un mélange d'oxydes de métal sans alumine. Le catalyseur peut inclure un métal noble ou un métal non noble du Groupe VIII et un métal non noble du Groupe VIB sur le support de catalyseur neutre. L'huile de pyrolyse traitée issue de la biomasse est introduite dans un réacteur d'hydrotraitement en présence du catalyseur dans des conditions d'hydrotraitement pour la production d'une huile de pyrolyse faiblement oxygénée issue de la biomasse.