Combustion processes in a pulverized-coal combustor. Volume 1. Final report
Technical Report
·
OSTI ID:5295831
This report summarizes the research results obtained in a two-year, third-phase study of mixing and kinetic processes in pulverized-coal combustors. The objective of the study was to gain an improved understanding of the physical and chemical processes involved in the combustion of pulverized coal. Specific tasks included pulverized-coal combustor tests and pulverized-coal model development. A total of ninety-eight combustion experiments were performed in three separate sets of combustion experiments. Tests were performed to evaluate the effects of stoichiometric ratio, secondary swirl number, coal type, coal particle size, preheat temperature, and secondary/primary velocity ratios on coal conversion and nitrogen and sulfur-pollutant formation. Tests were also performed to map the reactor in order to determine mixing and reaction rates and provide local combustor detail for model comparison. The two-dimensional axisymmetric gaseous-combustion model previously developed (BURN) was extended to include the coal particles, coal devolatilization, heterogeneous char reaction, and radiation subroutines (PCGC-2). Comparison of model predictions and selected reaction data are included, and a User's Manual is provided. 106 references, 57 figures, 12 tables.
- Research Organization:
- Brigham Young Univ., Provo, UT (USA). Dept. of Chemical Engineering
- OSTI ID:
- 5295831
- Report Number(s):
- EPRI-CS-2490-Vol.1; ON: DE84920020
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
014000* -- Coal
Lignite
& Peat-- Combustion
42 ENGINEERING
421000 -- Engineering-- Combustion Systems
B CODES
BENCH-SCALE EXPERIMENTS
CARBONACEOUS MATERIALS
CHARS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL
COAL FINES
COAL RANK
COMBUSTION
COMBUSTION KINETICS
COMBUSTORS
COMPUTER CODES
DEVOLATILIZATION
ENERGY SOURCES
FOSSIL FUELS
FUELS
KINETICS
MATERIALS
MATHEMATICAL MODELS
MIXING
ONE-DIMENSIONAL CALCULATIONS
OXIDATION
PARTICLE SIZE
POLLUTANTS
PYROLYSIS PRODUCTS
QUANTITY RATIO
RADIATIONS
REACTION KINETICS
SIZE
TEMPERATURE EFFECTS
THERMOCHEMICAL PROCESSES
TWO-DIMENSIONAL CALCULATIONS
014000* -- Coal
Lignite
& Peat-- Combustion
42 ENGINEERING
421000 -- Engineering-- Combustion Systems
B CODES
BENCH-SCALE EXPERIMENTS
CARBONACEOUS MATERIALS
CHARS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL
COAL FINES
COAL RANK
COMBUSTION
COMBUSTION KINETICS
COMBUSTORS
COMPUTER CODES
DEVOLATILIZATION
ENERGY SOURCES
FOSSIL FUELS
FUELS
KINETICS
MATERIALS
MATHEMATICAL MODELS
MIXING
ONE-DIMENSIONAL CALCULATIONS
OXIDATION
PARTICLE SIZE
POLLUTANTS
PYROLYSIS PRODUCTS
QUANTITY RATIO
RADIATIONS
REACTION KINETICS
SIZE
TEMPERATURE EFFECTS
THERMOCHEMICAL PROCESSES
TWO-DIMENSIONAL CALCULATIONS