Survey of coals treated by oxydesulfurization

Conference · Sun Apr 01 04:00:00 EST 1979

OSTI ID:6388382

Warzinski, R P; Ruether, J A; Friedman, S; Steffgen, F W

The feasibility of using only compressed air and water at elevated temperature to reduce the sulfur content of coal has been demonstrated in autoclave experimentation at the Pittsburgh Energy Technology Center for various coals from most of the major coal basins in the United States. This air/water oxydesulfurization consistently removes in excess of 90 percent of the pyritic sulfur and has the potential for reducing the organic sulfur content by up to 40 percent. The sulfur liberated from coal by this reaction is present in the aqueous effluent as dilute sulfuric acid which can be neutralized with limestone. Under certain reaction conditions pyrite forms a jarosite intermediate which reports as organic sulfur in chemical analysis. Extent of organic sulfur removal and loss of heating value increase with temperature in the range 170/sup 0/-200/sup 0/C.

• Research Organization: USDOE Pittsburgh Energy Technology Center, PA
• OSTI ID: 6388382
• Report Number(s): EPA-600/7-79-098b-Vol.2; CONF-7809119-3; ON: DE83007323
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600 -- Coal
Lignite
& Peat-- Properties & Composition
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
AIR
ASHES
AUTOCLAVES
CALORIFIC VALUE
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMICAL REACTORS
CHEMICAL STATE
COAL
COAL PREPARATION
COAL RANK
COMBUSTION PROPERTIES
COMMINUTION
COMPARATIVE EVALUATIONS
CORRELATIONS
DATA
DIAGRAMS
ELEMENTS
ENERGY LOSSES
ENERGY SOURCES
EXPERIMENTAL DATA
FEASIBILITY STUDIES
FLOWSHEETS
FLUIDS
FOSSIL FUELS
FUELS
GASES
HEAT LOSSES
HYDROGEN COMPOUNDS
INFORMATION
IRON COMPOUNDS
IRON SULFIDES
LOSSES
MATERIALS
MINERALS
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDATION
OXYGEN COMPOUNDS
PITTSBURGH OXYDESULFURIZATION PROCESS
PRESSURE DEPENDENCE
PYRITE
RESIDUES
SULFIDE MINERALS
SULFIDES
SULFUR
SULFUR COMPOUNDS
SULFUR CONTENT
TEMPERATURE DEPENDENCE
TIME DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
WATER