A MICROSCOPIC STUDY OF THE COMBUSTION RESIDUES OF SUBBITUMINOUS AND BITUMINOUS COALS FROM ALBERTA, CANADA

被引:9
作者
GENTZIS, T
CHAMBERS, A
机构
[1] Alberta Research Council, Coal and Hydrocarbon Processing Department, Devon, Alta. T0C 1E0, One Oil Patch Drive
关键词
D O I
10.1016/0166-5162(93)90013-Z
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Chars produced by the combustion of a set of three coals from Alberta, Canada, were classified morphologically using reflected light microscopy. Produced chars are different in morphological features, pore thickness, anisotropy and degree of reactivity, because of differences in the vitrinite and inertinite contents. The subbituminous A coal produced the highest percentage of unreactive or slightly reactive components due to its high inertinite content (20.0%), followed by isotropic cenospheres. Isotropic cenospheres, both thin- and thick-walled and exploded cenospheres are the characteristic chars produced by the high-volatile bituminous B coal, whereas the low-volatile bituminous coking coal produced cenospheres with granular anisotropy (mosaic) on the walls and abundant coke fragments. Optical microscopy is useful in differentiating the performance of a series of coals during combustion based on petrographic composition and rank and can aid in understanding the relationship between 'reactive' and 'non-reactive' coal macerals to burnout performance.
引用
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页码:245 / 257
页数:13
相关论文
共 23 条
[1]   A CHAR MORPHOLOGY SYSTEM WITH APPLICATIONS TO COAL COMBUSTION [J].
BAILEY, JG ;
TATE, A ;
DIESSEL, CFK ;
WALL, TF .
FUEL, 1990, 69 (02) :225-239
[2]   COAL PROVINCIALISM, COAL CHARACTERIZATION AND CHAR FORMATION [J].
BEND, SL ;
EDWARDS, IAS ;
MARSH, H .
FUEL, 1991, 70 (10) :1147-1150
[3]   MICROTEXTURE AND STRUCTURE OF SEMI-COKES AND COKES [J].
BOURRAT, X ;
OBERLIN, A ;
ESCALIER, JC .
FUEL, 1986, 65 (11) :1490-1500
[4]  
CHICHE P, 1965, FUEL, V44, P54
[5]   REACTIVITY OF COAL MACERALS AND LITHOTYPES [J].
CRELLING, JC ;
SKORUPSKA, NM ;
MARSH, H .
FUEL, 1988, 67 (06) :781-785
[6]   CHEMICAL VARIATIONS IN COAL MACERALS SEPARATED BY DENSITY GRADIENT CENTRIFUGATION [J].
DYRKACZ, GR ;
BLOOMQUIST, CAA ;
RUSCIC, L .
FUEL, 1984, 63 (08) :1166-1173
[7]   OPTICAL-PROPERTIES OF CARBONIZED SPORINITE IN VITRINITE SPORINITE BLENDS [J].
GOODARZI, F .
FUEL, 1984, 63 (06) :827-833
[8]   OPTICALLY ANISOTROPIC FRAGMENTS IN A WESTERN CANADIAN SUBBITUMINOUS COAL [J].
GOODARZI, F .
FUEL, 1985, 64 (09) :1294-1300
[9]   OPTICAL PROPERTIES OF CARBONIZED VITRINITES [J].
GOODARZI, F ;
MURCHISO.DG .
FUEL, 1972, 51 (04) :322-&
[10]  
Goodarzi F., 1988, J COAL QUALITY, V7, P80