Process Design and Economics for Conversion of Lignocellulosic Biomass to Ethanol: Thermochemical Pathway by Indirect Gasification and Mixed Alcohol Synthesis

Dutta, A. ; Talmadge, M. ; Hensley, J. ; Worley, M. ; Dudgeon, D. ; Barton, D. ; Groendijk, P. ; Ferrari, D. ; Stears, B. ; Searcy, E. M. ; Wright, C. T. ; Hess, J. R.

关键词: ALCOHOLS;    BENCHMARKS;    BIOMASS;    CAPACITY;    CONTRACTORS;    DESIGN;    DOLLARS;    ECONOMICS;    ETHANOL;    FINANCING;    GASIFICATION;    GASOLINE;    METRICS;    PRICES;    PROCESSING;    PRODUCTION;    SAFETY REPORTS;    SYNTHESIS;    TARGETS CELLULOSIC ETHANOL;    PRODUCTION ECONOMICS;    PROCESS SIMULATION;    THERMOCHEMICAL;    GASIFICATION;    DESIGN REPORT;    Bioenergy;   

DOI  :  10.2172/1015885
RP-ID  :  NREL/TP-5100-51400
PID  :  OSTI ID: 1015885
Others  :  TRN: US201112%%169

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来源: SciTech Connect

【 摘 要 】

This design report describes an up-to-date benchmark thermochemical conversion process that incorporates the latest research from NREL and other sources. Building on a design report published in 2007, NREL and its subcontractor Harris Group Inc. performed a complete review of the process design and economic model for a biomass-to-ethanol process via indirect gasification. The conceptual design presented herein considers the economics of ethanol production, assuming the achievement of internal research targets for 2012 and nth-plant costs and financing. The design features a processing capacity of 2,205 U.S. tons (2,000 metric tonnes) of dry biomass per day and an ethanol yield of 83.8 gallons per dry U.S. ton of feedstock. The ethanol selling price corresponding to this design is $2.05 per gallon in 2007 dollars, assuming a 30-year plant life and 40% equity financing with a 10% internal rate of return and the remaining 60% debt financed at 8% interest. This ethanol selling price corresponds to a gasoline equivalent price of $3.11 per gallon based on the relative volumetric energy contents of ethanol and gasoline.