Transformations of inorganic coal constituents in combustion systems: Quarterly report No. 4 for the period July-September 1987

Technical Report · Wed Oct 28 04:00:00 EST 1987

OSTI ID:6131904

This Fourth Quarterly Report is intended to serve as a Topical Report that summarizes the current status of the project and identifies work to be performed in Fiscal Year 1988. The objectives are as follows: (1) elucidation and quantification of the physical and chemical processes that occur in an environment typical of pulverized coal combustion, and which control the partitioning of coal mineral constituents among products (residual ash particles, aerosols, and vapors); (2) chemical and physical characterization of the coal, its intrinsic included, and extraneous mineral forms, and the spectrum of ash-related products in detail; and (3) development of a tractable, mechanistic model capable of predicting the observed features of the mineral matter transformation process. The principal of the program is that the transformation and partitioning of inorganic constituents into ash products is determined by two important factors. The first relates to the individual mineral forms, their size distribution and associations with each other and the carbonaceous char. The second is the time-temperature-chemical composition history of the coal and ash particles in the combustion system. Specific coals and specially prepared synthetic chars have been chosen to highlight the role of key minerals known to affect slagging and fouling in pulverized coal-fired combustion equipment. These include pyrites, illites, quartz, alkalies, and alkaline earths with varying size distributions and mineral/char associations. 24 refs., 17 figs., 6 tabs.

• Research Organization: PSI Technology Co., Andover, MA (USA)
• DOE Contract Number: AC22-86PC90751
• OSTI ID: 6131904
• Report Number(s): PSI-1024/Tr-730; ON: DE88001662
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600 -- Coal
Lignite
& Peat-- Properties & Composition
014000* -- Coal
Lignite
& Peat-- Combustion
AEROSOL WASTES
AEROSOLS
ASHES
CARBONACEOUS MATERIALS
CHARS
CHEMICAL ANALYSIS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL
COAL FINES
COLLOIDS
COMBUSTION
COMBUSTION KINETICS
COMBUSTION PRODUCTS
COMPUTER CODES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DISPERSIONS
DOCUMENT TYPES
ENERGY SOURCES
FLUIDS
FLY ASH
FOSSIL FUELS
FRACTIONATION
FRAGMENTATION
FUELS
GASES
KINETICS
MATERIALS
MINERALS
NUCLEATION
OXIDATION
PARTICLE SIZE
PHASE TRANSFORMATIONS
PROGRESS REPORT
PULVERIZED FUELS
PYROLYSIS PRODUCTS
REACTION KINETICS
RESEARCH PROGRAMS
RESIDUES
S CODES
SEPARATION PROCESSES
SIZE
SLAGS
SOLS
STAGED COMBUSTION
THERMOCHEMICAL PROCESSES
VAPOR CONDENSATION
VAPORS
WASTES