Pyrite thermochemistry, ash agglomeration, and char fragmentation during pulverized coal combustion: Quarterly report for the period September 15, 1988--December 15, 1988

Technical Report · Wed Feb 01 04:00:00 EST 1989

DOI:https://doi.org/10.2172/6351608· OSTI ID:6351608

Akan-Etuk, Aniefiok ^[1]; Niksa, Stephen ^[1]; Kruger, Charles H. ^[1]

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1. Mechanical Engineering Department, Stanford Univ., CA (United States)

During the quarter we developed size classification techniques to generate narrow size fractions of pyrite inclusions, and density classification techniques to control the dispersion of macrovoids and pyrite loading in our synthetic chars. Two methods to prepare pyrite inclusions in the range of 4 to 10 microns were evaluated, wet sieving and sedimentation. The other major development of the quarter was a scheme to control interparticle variations in both the pyrite loading and the porosity of macrovoids, which cannot be adequately controlled during char synthesis. 11 figs., 4 tabs.

• Research Organization: Stanford Univ., CA (USA). High Temperature Gasdynamics Lab.
• Sponsoring Organization: USDOE
• DOE Contract Number: FG22-87PC79909
• OSTI ID: 6351608
• Report Number(s): DOE/PC/79909-T1; ON: DE89010819
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000* -- Coal
Lignite
& Peat-- Combustion
AGGLOMERATION
ASHES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHARS
CHEMICAL REACTIONS
CLASSIFICATION
COAL
COMBUSTION
CRYSTAL STRUCTURE
DENSITY
DOCUMENT TYPES
ENERGY SOURCES
FOSSIL FUELS
FRAGMENTATION
FUELS
INCLUSIONS
IRON COMPOUNDS
IRON SULFIDES
MATERIALS
MICROSTRUCTURE
MINERALS
OXIDATION
PHYSICAL PROPERTIES
POROSITY
PROGRESS REPORT
PYRITE
PYROLYSIS PRODUCTS
RESIDUES
SULFIDE MINERALS
SULFIDES
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
VOIDS