Estimation of Liquid Fuel Yields from Biomass

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• 作者：Navneet R. Singh ; W. Nicholas Delgass ; Fabio H. Ribeiro ; Rakesh Agrawal
• 刊名：Environmental Science & Technology
• 出版年：2010
• 出版时间：July 1, 2010
• 年：2010
• 卷：44
• 期：13
• 页码：5298-5305
• 全文大小：307K
• 年卷期：v.44,no.13(July 1, 2010)
• ISSN：1520-5851

文摘

We have estimated sun-to-fuel yields for the cases when dedicated fuel crops are grown and harvested to produce liquid fuel. The stand-alone biomass to liquid fuel processes, that use biomass as the main source of energy, are estimated to produce one-and-one-half to three times less sun-to-fuel yield than the augmented processes. In an augmented process, solar energy from a fraction of the available land area is used to produce other forms of energy such as H₂, heat etc., which are then used to increase biomass carbon recovery in the conversion process. However, even at the highest biomass growth rate of 6.25 kg/m²·y considered in this study, the much improved augmented processes are estimated to have sun-to-fuel yield of about 2%. We also propose a novel stand-alone H₂Bioil-B process, where a portion of the biomass is gasified to provide H₂ for the fast-hydropyrolysis/hydrodeoxygenation of the remaining biomass. This process is estimated to be able to produce 125−146 ethanol gallon equivalents (ege)/ton of biomass of high energy density oil but needs experimental development. The augmented version of fast-hydropyrolysis/hydrodeoxygenation, where H₂ is generated from a nonbiomass energy source, is estimated to provide liquid fuel yields as high as 215 ege/ton of biomass. These estimated yields provide reasonable targets for the development of efficient biomass conversion processes to provide liquid fuel for a sustainable transport sector.