Oxidation/gasification of carbon residue on retorted oil shale. Final report
Description
Studies of the oxidation and gasification of oil shale char were extended to an investigation of the effects of mineral catalysis. Six shales with differing mineral compositions were studied, including samples from the saline zone in the Western Colorado and from the Antrim shales of Michigan. Oxidation kinetics data, corrected for mass transfer effects, were compared for all six samples. A high assay shale from Utah and a sample from the saline zone were found to have the highest oxidation rates. By examining the data for shales which were water leached and thermally pretreated, it was concluded that both NaO … continued below
Physical Description
42 pages
Creation Information
Thomson, W. J. January 16, 1984.
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Washington State Univ., Pullman (USA). Dept. of Chemical Engineering
Place of Publication: United States
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Description
Studies of the oxidation and gasification of oil shale char were extended to an investigation of the effects of mineral catalysis. Six shales with differing mineral compositions were studied, including samples from the saline zone in the Western Colorado and from the Antrim shales of Michigan. Oxidation kinetics data, corrected for mass transfer effects, were compared for all six samples. A high assay shale from Utah and a sample from the saline zone were found to have the highest oxidation rates. By examining the data for shales which were water leached and thermally pretreated, it was concluded that both NaO and CaO act as oxidation catalysts. However, as a result of mineral decomposition experiments conducted with a sample from the C-a lease tract, it appears as though the ankeritic dolomite fraction will not decompose as long as there is a minimal CO/sub 2/ over pressure. Rather, low temperature silication reactions appear to take place once the temperature exceeds 925/sup 0/K. An extensive evaluation was also completed for the gasification of an Antrim shale from Michigan. Both the rates of CO/sub 2/ and steam gasification of the char were found to be markedly lower than that observed for a shale sample from the Parachute Creek member in Colorado. However, unlike the Colorado shale, the make gas resulting from the steam gasification of the Antrim shale produced nearly equal quantities of CO and CO/sub 2/. Thus, despite the high concentration of iron in the Antrim shale, the water gas shift reaction is not catalyzed nearly to the same extent as in western shales.
Physical Description
42 pages
Notes
NTIS, PC A03/MF A01.
Subjects
Keywords
- Alkali Metal Compounds
- Alkaline Earth Metal Compounds
- Alkaline Earth Metals
- Ankerite
- Bituminous Materials
- Black Shales
- Calcium
- Calcium Carbonates
- Calcium Compounds
- Carbon Compounds
- Carbon Dioxide
- Carbon Oxides
- Carbonaceous Materials
- Carbonate Minerals
- Carbonates
- Catalysis
- Chalcogenides
- Chars
- Chattanooga Formation
- Chemical Reaction Kinetics
- Chemical Reactions
- Data
- Elements
- Energy Sources
- Experimental Data
- Fossil Fuels
- Fuels
- Gasification
- Geologic Formations
- High Temperature
- Information
- Iron Carbonates
- Iron Compounds
- Kinetics
- Magnesium Carbonates
- Magnesium Compounds
- Manganese Carbonates
- Manganese Compounds
- Materials
- Metals
- Minerals
- Numerical Data
- Oil Shales
- Oxidation
- Oxides
- Oxygen Compounds
- Pyrolysis Products
- Reaction Kinetics
- Shift Processes
- Sodium Compounds
- Sodium Oxides
- Spent Shales
- Steam
- Thermochemical Processes
- Transition Element Compounds 040500* -- Oil Shales & Tar Sands-- Properties & Composition
- Very High Temperature
- Water Gas Processes
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- Other: DE84006251
- Report No.: DOE/LC/10650-T1
- Grant Number: AT20-81LC10650
- Digital Object Identifier: https://doi.org/10.2172/5156728
- Office of Scientific & Technical Information Report Number: 5156728
- Archival Resource Key: ark:/67531/metadc1056006
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- January 16, 1984
Added to The UNT Digital Library
- Jan. 22, 2018, 7:23 a.m.
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- Feb. 9, 2021, 9:17 p.m.
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Thomson, W. J. Oxidation/gasification of carbon residue on retorted oil shale. Final report, report, January 16, 1984; United States. (https://digital.library.unt.edu/ark:/67531/metadc1056006/: accessed January 22, 2025), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.