On the combustion kinetics of heterogeneous char particle populations

Conference · Mon Dec 31 23:00:00 EST 1990

OSTI ID:5470405

Hurt, R H; Mitchell, R E

A laboratory-scale laminar flow reactor is used to measure coal char combustion rates under conditions simulating those found in pulverized coal-fired boilers. The temperatures, sizes, and velocities of individual burning pulverized coal char particles are measured in situ with a unique optical technique. The optical data are used to determine global, n{sup th}-order Arrhenius-form kinetic parameters describing char oxidation. In the present article, single-particle rate coefficients are computed from optical measurements on Pocahontas {number sign}3 coal char and techniques for the determination of kinetic parameters from the single-particle coefficients are investigated.

• Research Organization: Sandia National Labs., Livermore, CA (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC04-76DR00789
• OSTI ID: 5470405
• Report Number(s): SAND-91-8717; CONF-920707--8; ON: DE92006681
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000* -- Coal
Lignite
& Peat-- Combustion
ARRHENIUS EQUATION
CHARS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMICAL REACTORS
COMBUSTION
COMBUSTION KINETICS
EQUATIONS
KINETICS
OPTICS
OXIDATION
PARTICLE SIZE
PYROLYSIS PRODUCTS
REACTION KINETICS
SIMULATION
SIZE
TEMPERATURE MEASUREMENT
THERMOCHEMICAL PROCESSES