Kinetics of coal combustion: Part 2, Mechanisms and kinetics of coal volatiles combustion

Technical Report · Thu Dec 01 00:00:00 EST 1988

OSTI ID:6755751

Essenhigh, R H; Bailey, E G; Shaw, D W ^[1]

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1. Ohio State Univ., Columbus, OH (USA)

Values of global kinetic constants for the combustion of coal volatiles have been determined for the first time for volatiles from three coals (two bituminous coals and a Texas lignite). Global kinetic constants for methane and propane were also measured in the same apparatus to allow comparison with reference gases. Comparisons have also been made with values of global kinetics for pure hydrocarbons from a range of experiments as found in the literature. The volatiles were pyrolyzed from crushed coal drawn on weighed trays through a gas-fired muffle furnace, and they were burned at the top of a tube in an intense back-mix volume treated theoretically as a stirred reactor. Two types of experiment were carried out: partial combustion measurements near the stoichiometric for all coals from which the global kinetics were determined; and extinction limits for the Pittsburgh {number sign}8 coal volatiles to determine the extinction loop. The near stoichiometric generated kinetic data were used to predict the extinction limits with substantial agreement. Extinction loops for methane, propane and carbon monoxide were also measured for comparison.

• Research Organization: TRW Space and Technology Group, Redondo Beach, CA (USA); California Inst. of Tech., Pasadena, CA (USA); Ohio State Univ., Columbus, OH (USA)
• Sponsoring Organization: DOE/FE
• DOE Contract Number: AC22-84PC70815
• OSTI ID: 6755751
• Report Number(s): DOE/PC/70815-T13-Pt.2-Vol.2; ON: DE90014420
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
BITUMINOUS COAL
COMBUSTION KINETICS
LIGNITE
ACTIVATION ENERGY
ARRHENIUS EQUATION
COMPARATIVE EVALUATIONS
EQUATIONS
METHANE
PROGRESS REPORT
PROPANE
PYROLYSIS
VOLATILITY
ALKANES
BLACK COAL
BROWN COAL
CARBONACEOUS MATERIALS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL
DECOMPOSITION
DOCUMENT TYPES
ENERGY
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROCARBONS
KINETICS
MATERIALS
ORGANIC COMPOUNDS
REACTION KINETICS
THERMOCHEMICAL PROCESSES
014000* - Coal
Lignite
& Peat- Combustion