Transformations of inorganic coal constituents in combustion systems: Quarterly report No. 4 for the period July-September 1987
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
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Transformations of inorganic coal constituents in combustion systems
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Related Subjects
COAL
COMBUSTION KINETICS
PHASE TRANSFORMATIONS
COAL FINES
FLY ASH
AEROSOLS
CHARS
CHEMICAL ANALYSIS
COMBUSTION PRODUCTS
CRYSTAL LATTICES
FRACTIONATION
FRAGMENTATION
MINERALS
NUCLEATION
PARTICLE SIZE
PROGRESS REPORT
PULVERIZED FUELS
RESEARCH PROGRAMS
S CODES
SLAGS
STAGED COMBUSTION
VAPOR CONDENSATION
VAPORS
AEROSOL WASTES
ASHES
CARBONACEOUS MATERIALS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COLLOIDS
COMBUSTION
COMPUTER CODES
CRYSTAL STRUCTURE
DISPERSIONS
DOCUMENT TYPES
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GASES
KINETICS
MATERIALS
OXIDATION
PYROLYSIS PRODUCTS
REACTION KINETICS
RESIDUES
SEPARATION PROCESSES
SIZE
SOLS
THERMOCHEMICAL PROCESSES
WASTES
014000* - Coal
Lignite
& Peat- Combustion
010600 - Coal
Lignite
& Peat- Properties & Composition