Upgrading biomass liquid fuels. [Wood-derived oil]

Conference · Tue Oct 01 00:00:00 EDT 1985

OSTI ID:6225011

Elliott, D C; Baker, E G

Catalytic hydrotreating of wood-derived liquids is being studied using a continuous-feed, fixed-bed reactor. Commercial hydrotreating catalysts and conditions are used to hydrodeoxygenate and hydrocrack the biomass liquefaction products generated by high-pressure processing. Biomass flash pyrolyzates require alternate processing to first stabilize the products prior to catalytic hydrotreating. Experiments are performed in an upflow reactor wherein both liquid phase and gas phase reactions are considered to be important. Although hydrocarbons are not produced in any significant amount by thermochemical direct liquefaction of wood, the use of a secondary hydrogenation step to treat the initial product can result in nearly pure hydrocarbons. These hydrocarbons are primarily cyclics and aromatics which would be useful in gasoline blending. Experimental results with either cobalt/molybdenum or nickel/molybdenum catalyst show that deoxygenation of the primarily phenolic wood oil is achieved in either case. The extent of saturation of the liquid product is dependent on catalyst type, operating temperature and relative flows of oil feedstock and hydrogen gas. Future work will include new catalyst testing, longer term runs to better quantify carbon fouling of the catalyst bed and detailed chemical analysis of intermediate products to elucidate the process chemistry. 12 refs., 1 fig., 7 tabs.

• Research Organization: Pacific Northwest Labs., Richland, WA (USA)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 6225011
• Report Number(s): PNL-SA-13476; CONF-8510167-3; ON: DE86004020
• Resource Relation: Conference: Biomass thermal chemical conversion contractors' meeting, Minneapolis, MN, USA, 15 Oct 1985
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
ALUMINIUM OXIDES
CATALYTIC EFFECTS
CATALYSTS
COMPARATIVE EVALUATIONS
COBALT OXIDES
HYDROCARBONS
YIELDS
HYDROGENATION
MOLYBDENUM OXIDES
NICKEL
NICKEL OXIDES
OILS
WOOD
LIQUEFACTION
BIOMASS
CHEMICAL COMPOSITION
CHEMICAL REACTORS
EXPERIMENTAL DATA
FLOWSHEETS
HIGH TEMPERATURE
HYDROCRACKING
ALUMINIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
COBALT COMPOUNDS
CRACKING
DATA
DECOMPOSITION
DIAGRAMS
ELEMENTS
ENERGY SOURCES
INFORMATION
METALS
MOLYBDENUM COMPOUNDS
NICKEL COMPOUNDS
NUMERICAL DATA
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PYROLYSIS
REFRACTORY METAL COMPOUNDS
RENEWABLE ENERGY SOURCES
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
090122* - Hydrocarbon Fuels- Preparation from Wastes or Biomass- (1976-1989)