Changes in coal sulfur during carbonization

Technical Report · Mon Aug 01 00:00:00 EDT 1960

OSTI ID:5330732

Anderson, R A; Polansky, T S

Changes in the sulfur forms during carbonization of a High Volatile A rank, high sulfur, Pittsburgh Seam coal were investigated. Possible effects of mineral matter content were investigated by use of a float fraction of the whole coal. The coals were carbonized in a vertical, static bed unit designed to study the effects of primary and secondary reactions of the sulfur forms. Pyrite was completely decomposed at about 700/sup 0/C and sulfate sulfur was not observed above 650/sup 0/C. Formation of inorganic sulfides, excluding iron sulfide, was noted by the nonstoichiometric relationship of sulfide sulfur and non-pyritic iron. Iron, uncombined with sulfur, was observed in cokes carbonized at temperatures between 350/sup 0/ and 650/sup 0/C. Organic sulfur began to decompose at about 366/sup 0/C, and it amounted to approximately 11 percent of the total coke sulfur at 885/sup 0/C. Elmental sulfur was qualitatively detected in cokes produced above 700/sup 0/C by benzoin, and a method for determining it quantitatively was investigated.

• Research Organization: Pennsylvania State Univ., University Park (USA). Dept. of Fuel Technology
• OSTI ID: 5330732
• Report Number(s): SR-19
• Resource Relation: Other Information: Portions of document are illegible
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL
CARBONIZATION
SULFUR
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
SULFUR COMPOUNDS
PYROLYSIS
IRON SULFATES
ORGANIC SULFUR COMPOUNDS
PYRITE
SULFIDES
TEMPERATURE DEPENDENCE
CARBONACEOUS MATERIALS
CHALCOGENIDES
DECOMPOSITION
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
IRON COMPOUNDS
IRON SULFIDES
MINERALS
NONMETALS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PYRITES
SULFATES
TRANSITION ELEMENT COMPOUNDS
010401* - Coal & Coal Products- Carbonization- (-1987)