Metodo para desoxigenar un aceite de pirolisis derivado de biomasa que comprende combinar una corriente de dicho aceite con una corriente de reciclaje calentada diluyente de pyoil con bajo contenido de oxigeno, y contactar la corriente formada con un catalizador de desoxigenacion en presencia de hidrogeno.

摘要

Methods for deoxygenating a biomass-derived pyrolysis oil are provided. A method for deoxygenating a biomass-derived pyrolysis oil comprising the steps of combining a biomass-derived pyrolysis oil stream with a heated low-oxygen-pyoil diluent recycle stream to form a heated diluted pyoil feed stream is provided. The heated diluted pyoil feed stream has a feed temperature of about 150° C. or greater. The heated diluted pyoil feed stream is contacted with a first deoxygenating catalyst in the presence of hydrogen at first hydroprocessing conditions effective to form a low-oxygen biomass-derived pyrolysis oil effluent.