Combustion of volatile matter in fluidized beds

Journal Article · Sat Feb 28 23:00:00 EST 1987 · Ind. Eng. Chem. Res.; (United States)

DOI:https://doi.org/10.1021/ie00063a009· OSTI ID:6434268

Atimtay, A T

The times required for burnout of volatile materials from coal particles in fluidized beds have been investigated for different particle sizes, superficial gas velocities, volatile matter contents, and masses charged. The results show that the volatile material takes about 3-12 s to burn for particle sizes from 1.53 to 3.06 mm and fluidizing velocities from 0.38 to 0.58 m/s. The radial velocity of the volatiles coming out of each particle was found to be close to U/sub mf/ and to increase with particle size. The presence of volatiles in the coal particle increases the combustion rate of the particles of char remaining after volatiles have left.

• Research Organization: Tulane Univ., Chemical Engineering Dept., New Orleans, LA 70118
• OSTI ID: 6434268
• Journal Information: Ind. Eng. Chem. Res.; (United States), Journal Name: Ind. Eng. Chem. Res.; (United States) Vol. 26:3; ISSN IECRE
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000* -- Coal
Lignite
& Peat-- Combustion
CHARS
CHEMICAL COMPOSITION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL FINES
COMBUSTION
COMBUSTION KINETICS
COMBUSTION PRODUCTS
FLOW RATE
FLUID FLOW
FLUIDIZED BEDS
FLUIDIZED-BED COMBUSTION
GAS FLOW
KINETICS
MATTER
OXIDATION
PARTICLE SIZE
PYROLYSIS PRODUCTS
REACTION KINETICS
SIZE
THERMOCHEMICAL PROCESSES
TIME DEPENDENCE
VOLATILE MATTER