FUEL 2 |
| This paper addresses the challenge of low-cost distributed hydrogen production from renewable liquids. Pyrolysis is used to convert the biomass into a liquid (bio-oil) that can be transported more efficiently than biomass and has the potential for automated operation of the conversion system at refueling stations. Three topics will be addressed. A low maintenance system has been developed for volatilizing bio-oil with manageable carbon deposits using ultrasonic atomization to control physical properties and by modifying bio-oil properties, such as viscosity, by blending or reacting bio-oil with alcohol. Homogeneous partial oxidation of bio-oil is then used to achieve significant conversion to CO with minimal aromatic hydrocarbon formation by keeping the temperature at 650 oC or less and oxygen levels at a low and steady level. Moedl compounds are used to establish the underlying chemical understanding of the process, as well as identify optimized conditions. The product gas is then converted using heterogeneous auto-thermal reforming using precious metal catalysts to complete the conversion of the bio-oil partial oxidation gases and vapors to hydrogen. |
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Fuel Processing for Hydrogen Production: Perspectives on Hydrogen Generation
8:55 AM-11:40 AM, Sunday, August 19, 2007 Boston Park Plaza -- Berkeley Rm, Oral
Division of Fuel Chemistry |