Kinetics of coal combustion: 9th quarterly report

Technical Report · Wed Apr 01 00:00:00 EST 1987

OSTI ID:6572189

Gat, N; Denison, R; Petach, M; Gavalas, G R; Flagan, R C; Essenhigh, R H

Task 1: Mechanisms and Kinetics of Coal Volatiles Combustion. This task is performed on two levels. Engineering rate parameters are obtained by burning coal volatiles in a ''well stirred reactor'' at OSU. Kinetics of volatiles combustion are obtained by the ''flat-flame'' burner technique, in which mixtures of various aromatic compounds - typical of coal volatile matter produced under rapid heating conditions - are burned. Combustion kinetics of fundamental flame parameters are correlated by the Semenov/Von Karman Laminar Flame Theory. This investigation is performed at TRW. Task 2: Global Char Combustion Rates. The validity and range of applicability of an extended ''resistance'' equation to describe global char kinetics is investigated in this task. As part of this task, existing data in the literature as well as new data generated under other parts of this project are re-evaluated against the model. This work is jointly performed at Ohio State University and TRW. Task 3: Fundamental Mechanisms and Kinetics of Heterogeneous Char Combustion. This investigation addresses the changes in the morphological structure of a char particle during combustion and its influence on the combustion rate and char reactivity. Two experiments are planned to supplement the analysis: a Single Particle TGA, and a Flow Reactor. The analysis will define the test conditions and the range of parameters for the experiments. This task is performed at CIT.

• Research Organization: TRW Space and Technology Group, Redondo Beach, CA (USA); California Inst. of Tech., Pasadena (USA); Ohio State Univ., Columbus (USA)
• DOE Contract Number: AC22-84PC70815
• OSTI ID: 6572189
• Report Number(s): DOE/PC/70815-T11; ON: DE87009857
• Resource Relation: Other Information: Paper copy only, copy does not permit microfiche production
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
CHARS
COMBUSTION
COAL
COMBUSTION KINETICS
PARTICULATES
LASER-RADIATION HEATING
THERMAL GRAVIMETRIC ANALYSIS
VOLATILE MATTER
ARRHENIUS EQUATION
BURNERS
FLAMES
FUEL-AIR RATIO
HEAT LOSSES
MATHEMATICAL MODELS
PARTICLE SIZE
PROPANE
ALKANES
CARBONACEOUS MATERIALS
CHEMICAL ANALYSIS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
ENERGY LOSSES
ENERGY SOURCES
EQUATIONS
FOSSIL FUELS
FUELS
GRAVIMETRIC ANALYSIS
HEATING
HYDROCARBONS
KINETICS
LOSSES
MATERIALS
MATTER
ORGANIC COMPOUNDS
OXIDATION
PARTICLES
PLASMA HEATING
PYROLYSIS PRODUCTS
QUANTITATIVE CHEMICAL ANALYSIS
REACTION KINETICS
SIZE
THERMAL ANALYSIS
THERMOCHEMICAL PROCESSES
014000* - Coal
Lignite
& Peat- Combustion