Combustion reactivity of low rank coal chars

Journal Article · Sat Jan 01 04:00:00 EST 1983 · Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States)

OSTI ID:5371127

Young, B C

It has been shown that the reactivities to oxygen of chars produced from Millmetran sub-bituminous coal decrease with increasing pyrolysis temperature but are similar in magnitude to the reactivities of anthracites and semi-anthracites. However, Wandoan char, also of sub-bituminous origin, exhibits about twice the reactivity of Millmerran char and about ten times the reactivity of petroleum coke. On the basis of observed activation energy values, particle size and particle density behaviour it is concluded that the combustion rates of Millmerran and Wandoan chars are controlled by the combined effects of pore diffusion and chemical reaction. (JMT)

• Research Organization: CSIRO Div. of Fossil Fuels, North Ryde, Australia
• OSTI ID: 5371127
• Report Number(s): CONF-830814-Vol.3
• Journal Information: Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States), Journal Name: Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States) Vol. 28:4; ISSN ACFPA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010406* -- Coal & Coal Products-- Pyrolysis & Cracking-- (-1987)
014000 -- Coal
Lignite
& Peat-- Combustion
CARBONACEOUS MATERIALS
CHARS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL
COMBUSTION KINETICS
DECOMPOSITION
ENERGY SOURCES
FOSSIL FUELS
FUELS
KINETICS
MATERIALS
PYROLYSIS
PYROLYSIS PRODUCTS
REACTION KINETICS
TEMPERATURE DEPENDENCE
THERMOCHEMICAL PROCESSES