Laboratory study of the self-heating tendency of coals and their pyrolysis chars

Journal Article · Tue Apr 01 04:00:00 EST 1986 · Ind. Eng. Chem. Process Des. Dev.; (United States)

DOI:https://doi.org/10.1021/i200033a034· OSTI ID:5721158

Guin, J A; Curtis, C W; Sahawneh, B M; Thomas, D C

Laboratory experiments were performed to examine the self-heating tendencies of bituminous coals and lignite as compared to chars prepared by their pyrolysis. The effects of oxygen, moisture, initial temperature, volatile matter content, and rank of coal were studied. The primary role of moisture was to supply an initial heat of adsorption which raised the temperature to a point where the oxidation reactions were self-sustaining. The pyrolysis chars were found to have no greater tendency toward self-heating than their parent coals, and in particular, the lignite char was found to be much more stable than the lignite from which it was prepared.

• Research Organization: Department of Chemical Engineering, Auburn University, Auburn University, AL 36849
• OSTI ID: 5721158
• Journal Information: Ind. Eng. Chem. Process Des. Dev.; (United States), Journal Name: Ind. Eng. Chem. Process Des. Dev.; (United States) Vol. 25:2; ISSN IEPDA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600 -- Coal
Lignite
& Peat-- Properties & Composition
014000* -- Coal
Lignite
& Peat-- Combustion
ADSORPTION HEAT
BENCH-SCALE EXPERIMENTS
BITUMINOUS COAL
BLACK COAL
BROWN COAL
CARBONACEOUS MATERIALS
CHARS
CHEMICAL REACTIONS
COAL
COAL RANK
COMBUSTION
DECOMPOSITION
ELEMENTS
ENERGY SOURCES
ENTHALPY
FOSSIL FUELS
FUELS
LIGNITE
MATERIALS
MATTER
MOISTURE
NONMETALS
OXIDATION
OXYGEN
PHYSICAL PROPERTIES
PYROLYSIS
PYROLYSIS PRODUCTS
SPONTANEOUS COMBUSTION
STABILITY
TEMPERATURE EFFECTS
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
VOLATILE MATTER