An overview of the chemistry of the molten-caustic-leaching process
- Burns and Roe Services Corporation, Pittsburgh, PA (US)
- US Dept. of Energy, Pittsburgh Energy Technology Center, Pittsburgh, PA (US)
The molten-caustic leaching (MCL) process is quite effective in its ability to remove both organic and pyritic sulfur, mineral matter, and trace elements from coal. This paper reports how the chemistry of various reactions taking place in the process has been examined by several researchers. For example, Ames Laboratory of Iowa State University is actively studying the chemistry of MCL desulfurization and reagent regeneration reactions, and researchers at the U.S. Department of Energy's Pittsburgh Energy Technology Center are examining the reactions of molten caustic with the organosulfur compounds present in coal. As a result of these research efforts, reactions of mineral pyrite, benzothiophene, and minerals commonly found in coal (quartz, illite, etc.) with molten caustic are well characterized.
- OSTI ID:
- 6987219
- Journal Information:
- Coal Preparation (Gordon and Breach); (USA), Journal Name: Coal Preparation (Gordon and Breach); (USA) Vol. 7:1; ISSN 0734-9343; ISSN COAPD
- Country of Publication:
- United States
- Language:
- English
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010402* -- Coal
Lignite
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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL PROPERTIES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
COAL
DESULFURIZATION
ENERGY SOURCES
FOSSIL FUELS
FUELS
IRON COMPOUNDS
IRON SULFIDES
KINETICS
MATERIALS
MINERALS
NATIONAL ORGANIZATIONS
PYRITE
REACTION KINETICS
SULFIDE MINERALS
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
US DOE
US ORGANIZATIONS