TWO-STEP PROCESS FOR PRODUCING HIGH YIELDS OF OIL FROM BIOMASS

• Main Authors: BARTEK, ROBERT, HEINERMAN, JACOBUS, JOHANNES LEONARDUS, CERQUEIRA, HENRIQUE, S, O'CONNOR, PAUL, SANCHEZ IGLESIAS, VICENTE
• Format: Patent
• Language: English; French
• Published: 11.08.2011
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; CRACKING HYDROCARBON OILS; FUELS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; LUBRICANTS; METALLURGY; MINERAL WAXES; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION; PYROLIGNEOUS ACID; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; TECHNICAL GASES CONTAINING CARBON MONOXIDE; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; WORKING-UP PITCH, ASPHALT, BITUMEN, TAR

A process is disclosed for preparing a bio-oil having a Total Acid number ("TAN") of less than 10. The process comprises the steps of:(i) subjecting the solid biomass material to a catalytic pyrolysis process whereby a bio-oil having a TAN of less than 60 and greater than 10 is produced; and (ii) subjecting the bio-oil obtained in step (i) to an acid removal step. Significant TAN gains can be made by separating the hydrophobic phase of the bio-oil from the aqueous phase. Each phase can be subjected to a removal of acidic components by physical adsorption, chemisorption, extraction, neutralization, or chemical conversion. La présente invention concerne un procédé pour préparer une huile biologique ayant un indice d'acide total (« TAN ») inférieur à 10. Le procédé comprend les étapes consistant à : (i) soumettre le matériau de biomasse solide à un traitement de pyrolyse catalytique de telle manière qu'une huile biologique ayant un TAN inférieur à 60 et supérieur à 10 soit produite ; et (ii) soumettre l'huile biologique obtenue dans l'étape (i) à une étape d'élimination d'acide. Des gains significatifs de TAN peuvent être réalisés en séparant la phase hydrophobe de l'huile biologique de la phase aqueuse. Chaque phase peut être soumise à une élimination de composants acides par adsorption physique, chimisorption, extraction, neutralisation, ou conversion chimique.