Patent ID: 9222037
Filing Date: 2015-12-29
Classification: C10G,Y02P

Abstract:
1. A method for deoxygenating a biomass-derived pyrolysis oil, the method comprising the steps of: dividing a feedstock stream comprising the biomass-derived pyrolysis oil and having a first temperature of about 60° C. or less into portions including a first feedstock portion and a second feedstock portion; combining the first feedstock portion with a heated co-feed organic liquid stream comprising alcohols, ethers, phenolic compounds, or mixtures thereof to form a first heated diluted pyoil feed stream; contacting the first heated diluted pyoil feed stream with a first deoxygenating catalyst in the presence of hydrogen in a first reaction zone at first hydroprocessing conditions effective to form a first intermediate low-oxygen pyoil effluent; combining the second feedstock portion with the first intermediate low-oxygen pyoil effluent to form a second heated diluted pyoil feed stream; and contacting the second heated diluted pyoil feed stream with a second deoxygenating catalyst in the presence of hydrogen in a second reaction zone at second hydroprocessing conditions effective to form additional low-oxygen pyoil effluent, and wherein the first and second deoxygenating catalysts are the same type or different types of catalyst.