Ethanol Production for Automotive Fuel Usage

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The production of ethanol from potatoes, sugar beet, and wheat using geothermal resources at the Raft River area of idaho is being evaluated. The south central section of Idaho produces approximately 18 million bushels of wheat, 1.3 million tons of sugar beet and 24 million cwt potatoes annually. Based on these production figures, a 20 million gallon/yr ethanol facility has been selected as the largest scale plant that can be supported with the current agricultural resources. The plant will operate on all three feedstocks nominally processing potatoes for five months, sugar beet for four months and wheat for three months ... continued below

Creation Information

May, S.C.; Stenzel, R.A.; Weekes, M.C. & Yu, J. October 1, 1979.

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  • Geothermal Energy Program (U.S.)
    Publisher Info: DOEEEGTP (USDOE Office of Energy Efficiency and Renewable Energy Geothermal Tech Pgm)
    Place of Publication: United States

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Description

The production of ethanol from potatoes, sugar beet, and wheat using geothermal resources at the Raft River area of idaho is being evaluated. The south central section of Idaho produces approximately 18 million bushels of wheat, 1.3 million tons of sugar beet and 24 million cwt potatoes annually. Based on these production figures, a 20 million gallon/yr ethanol facility has been selected as the largest scale plant that can be supported with the current agricultural resources. The plant will operate on all three feedstocks nominally processing potatoes for five months, sugar beet for four months and wheat for three months of the year. The process facility will use conventional alcohol technology utilizing geothermal fluid at a maximum of 280 F as an energy source. The process flow diagrams for all three feedstocks are currently being prepared. There will be basically three feedstock preparation sections, although the liquefaction and saccharification steps for potatoes and wheat will involve common equipment. The fermentation, distillation and by-product handling sections will be common to all three feedstocks. Three geothermal energy extraction systems were considered to accommodate the energy requirements of the ethanol facility (flashed steam, pressurized fluid and secondary heat transfer). Pressured geothermal fluid with direct heat transfer has been selected as the usage mode to minimize scale deposition. Tentatively, the geothermal supply wells will be laid out in square grids with 1/4 mile spacing. The number of wells required will be determined after the process heat load is calculated.

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  • Report No.: DOE/ID/12050-1
  • Grant Number: DE-AC07-79ID12050
  • DOI: 10.2172/893419 | External Link
  • Office of Scientific & Technical Information Report Number: 893419
  • Archival Resource Key: ark:/67531/metadc883223

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • October 1, 1979

Added to The UNT Digital Library

  • Sept. 21, 2016, 2:29 a.m.

Description Last Updated

  • Nov. 28, 2016, 1:20 p.m.

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May, S.C.; Stenzel, R.A.; Weekes, M.C. & Yu, J. Ethanol Production for Automotive Fuel Usage, report, October 1, 1979; United States. (digital.library.unt.edu/ark:/67531/metadc883223/: accessed October 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.