Study on proneness of spontaneous combustion of macerals
Conference
·
OSTI ID:20082359
Pure macerals from brown coal to gas coal were separated from coalfields of Pingzhuang, Liaoyuan, Fuxin, Fushun, Changguang Hunyuan and Tangcun, and effect of macerals on spontaneous combustion was recently investigated with ignition temperature and index gas technique. Three kinds of maceral group with same rank have different ignition temperature and proneness of spontaneous combustion. Vitrinite group has the lowest ignition temperature, it is the most liable to spontaneous combustion, and the proneness of spontaneous combustion of coal increases with the increases of vitrain content, fusinite group has the highest ignition temperature, is least liable; Exinite group is in the middle. Gaseous products of three kinds of maceral group such as CO, C{sub 2}H{sub 4} and C{sub 3}H{sub 6} which are used as index gas have different rates of formation during oxidation; the vitrinite group is higher than others. Vitrinite group with more active site is easy to oxidize at low temperature. Exinite group with the lowest aromaticity and many aliphatic structure present in the aromatic layers is of steady chemical properties, so it is least liable to oxidize at low temperature. Fusinite group with the short CH{sub 3} and/or CH{sub 2} side chain and fewer active sites in the aromatic rings is inert in chemical properties and most difficult to oxidize at low temperature.
- Research Organization:
- Jiaozuo Inst. of Tech. (CN)
- OSTI ID:
- 20082359
- Country of Publication:
- United States
- Language:
- English
Similar Records
Aerial oxidation of maceral isolates from an Australian bituminous coal
Correlations of structure and reactivity on coal macerals
Standard definitions of terms relating to lithologic classes and physical components of coal
Conference
·
Tue Mar 31 23:00:00 EST 1987
· Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States)
·
OSTI ID:6207588
Correlations of structure and reactivity on coal macerals
Book
·
Mon Dec 30 23:00:00 EST 1996
·
OSTI ID:549517
Standard definitions of terms relating to lithologic classes and physical components of coal
Journal Article
·
Tue Dec 31 23:00:00 EST 1974
· Annu. Book ASTM Stand.; (United States)
·
OSTI ID:7177941