Chemistry of molten hydroxide desulfurization using model systems
Experiments carried out in microautoclaves demonstrate that sulfur can be removed from organosulfur model compound using molten hydroxides. Based on these results, it can be seen that the ratio of KOH and NaOH may be critical in removing sulfur from organosulfur moieties in coal and that the reaction temperatures and reaction times might determine which type of organosulfur species is being removed and to what extent. A large improvement in sulfur removal using the molten hydroxide desulfurization process might be possible by varying the amount of KOH and NaOH. While sulfur might be removed from benzothiophene moieties in coal at 375/sup 0/C, it appears that more severe conditions are necessary to remove sulfur from dibenzothiophene moieties. Efficiency of organosulfur removal may be partially dependent on the type of organosulfur species in coal, and therefore continued efforts to characterize the types of organosulfur moieties in coal are necessary. 9 references, 4 figures.
- Research Organization:
- Dept. of Energy, Pittsburgh, PA
- OSTI ID:
- 5932283
- Journal Information:
- Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States), Journal Name: Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States) Vol. 30:2; ISSN ACFPA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
ALKALI METAL COMPOUNDS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
DESULFURIZATION
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
HYDROXIDES
MATERIALS
MOLTEN SALTS
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
POTASSIUM HYDROXIDES
SALTS
SODIUM COMPOUNDS
SODIUM HYDROXIDES