Particle size limitations due to heat transfer in determining pyrolysis kinetics of biomass

Journal Article · Sun Apr 01 00:00:00 EST 1984 · Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States)

OSTI ID:6123725

Simmons, G M

Using various assumptions as described, it is seen that, for example, a particle dimension of 0.01 cm (thickness = 0.02 cm or 200 microns) might be investigated kinetically up to about 450-500/sup 0/C without taking transport limitations due to internal particle profiles into account. If external heat transfer to the particle surface is also slow, then even lower temperature limits would occur. In many cases, Equation 13 can be used to estimate the maximum particle size for various values of the dimensionless parameters. It should also be noted that the characteristic dimension for a bed of fine particles would be bed depth rather than particle size.

• Research Organization: Department of Chemical Engineering, University of Idaho, Moscow, ID
• OSTI ID: 6123725
• Journal Information: Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States), Vol. 29:2
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
BIOMASS
CHEMICAL REACTION KINETICS
HEAT TRANSFER
PYROLYSIS
HIGH TEMPERATURE
PARTICLE SIZE
CHEMICAL REACTIONS
DECOMPOSITION
ENERGY SOURCES
ENERGY TRANSFER
KINETICS
REACTION KINETICS
RENEWABLE ENERGY SOURCES
SIZE
THERMOCHEMICAL PROCESSES
400800* - Combustion
Pyrolysis
& High-Temperature Chemistry