Direct hydrocracking of oxidized bio-oil to hydrocarbons. (15th August 2015)

• Record Type: Journal Article
• Authors: Tanneru, Sathish K.; Steele, Philip H.
• Is Part Of: Fuel. Volume 154(2015)
• Page Start: 268
• Page End: 274
• Publication Date: 2015-08-15
• Subjects: Bio-oil -- Oxidation -- Hydrodeoxygenation -- Hydrocracking -- HHV; Fuel -- Periodicals; Coal -- Periodicals; Coal; Fuel; Periodicals; 662.6
• DOI: 10.1016/j.fuel.2015.03.080
• Languages: English
• ISSNs: 0016-2361

Abstract

Highlights: Direct hydrocracking of oxidized bio-oil to produce liquid hydrocarbons was tested. Hydrocarbon yield 36.6% higher than for raw bio-oil was achieved. GC–MS results showed 99.2 area% of hydrocarbon compounds in the produced product. The liquid hydrocarbons had 6.9% higher HHV than for HDO of raw bio-oil. Abstract: Hydrodeoxygenation is considered a promising technology to convert bio-oils to liquid transportation fuels. Recently we tested a hydrodeoxygenation method to convert oxidized bio-oil to increase liquid fuel yield, reduce char and reduce required hydrogen. In this current study we tested direct hydrocracking of the oxidized bio-oil to produce high-energy liquid hydrocarbons. We tested various reaction conditions (reaction temperature, hydrogen pressure, time and catalyst type) on the hydrocracking of the oxidized bio-oil. Direct hydrocracking of the oxidized bio-oil produced 36.6% higher hydrocarbons yield compared to direct hydrocracking of the raw bio-oil. The hydrocarbons mixture produced had a higher heating value (HHV) of 43.6 MJ/kg. The oxygen content and acid value were 0.5 wt% and 0.3 mg KOH/g, respectively. Density and viscosity were considerably low at 0.9 g/ml and 1.8 cSt, respectively. pH value was 8.4. The hydrocarbon mixture was also analyzed by GC–MS, FTIR, NMR and DHA.