Desulfurization and conversion of coal under supercritical conditions
Journal Article
·
· Miner. Matters; (United States)
OSTI ID:6216859
The supercritical desulfurization process is based on the observation that, in the presence of alcohol under temperature and pressure conditions above the critical point of the alcohol being used for the extraction/reaction process, organic sulfur is selectively removed from the coal matrix. Over 50% reduction in total sulfur concentration was attained in batch reactor experiments when a high organic sulfur content coal (organic sulfur comprising 73% of the total sulfur) was processed using pretreatment with a potassium hydroxide solution, followed by a supercritical extraction with methyl alcohol. A continuous reactor process development unit has been constructed at the Coal Technology Laboratory and preliminary test results and unit design are discussed. The combination of a physical coal cleaning process for removal of pyritic sulfur, followed by supercritical extraction with alcohol to reduce organic sulfur, would combine the advantages of both processes.
- Research Organization:
- Southern Illinois Univ., Carbondale
- OSTI ID:
- 6216859
- Journal Information:
- Miner. Matters; (United States), Journal Name: Miner. Matters; (United States) Vol. 7:3; ISSN MIMAE
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
29 ENERGY PLANNING, POLICY, AND ECONOMY
290500 -- Energy Planning & Policy-- Research
Development
Demonstration
& Commercialization
ALCOHOLS
ALKALI METAL COMPOUNDS
BATCH LOADING
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
COAL PREPARATION
DATA
DESULFURIZATION
ELEMENTS
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
FUNCTIONAL MODELS
HYDROGEN COMPOUNDS
HYDROXIDES
HYDROXY COMPOUNDS
INFORMATION
IRON COMPOUNDS
IRON SULFIDES
MATERIALS
MINERALS
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
POTASSIUM HYDROXIDES
PROCESS DEVELOPMENT UNITS
PYRITE
REACTOR FUELING
REMOVAL
SULFIDE MINERALS
SULFIDES
SULFUR
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
29 ENERGY PLANNING, POLICY, AND ECONOMY
290500 -- Energy Planning & Policy-- Research
Development
Demonstration
& Commercialization
ALCOHOLS
ALKALI METAL COMPOUNDS
BATCH LOADING
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
COAL PREPARATION
DATA
DESULFURIZATION
ELEMENTS
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
FUNCTIONAL MODELS
HYDROGEN COMPOUNDS
HYDROXIDES
HYDROXY COMPOUNDS
INFORMATION
IRON COMPOUNDS
IRON SULFIDES
MATERIALS
MINERALS
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
POTASSIUM HYDROXIDES
PROCESS DEVELOPMENT UNITS
PYRITE
REACTOR FUELING
REMOVAL
SULFIDE MINERALS
SULFIDES
SULFUR
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS