CARBONIZATION AND LIQUID-CRYSTAL (MESOPHASE) DEVELOPMENT .13. KINETIC CONSIDERATIONS OF THE CO-CARBONIZATIONS OF COALS WITH ORGANIC ADDITIVES

被引:27
作者
MOCHIDA, I [1 ]
MARSH, H [1 ]
机构
[1] KYUSHU UNIV,IND SCI RES INST,FUKUOKA 812,JAPAN
关键词
D O I
10.1016/0016-2361(79)90187-X
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
Five coals, of rank from an anthracite to a non-caking coal, have been carbonized singly and also cocarbonized with decacyclene, mixing ratio 7:3, in the temperature range 648 K to 823 K, heating at 10 K min-1, with various soak times. The objective of the study is to derive the basic factors which influence the kinetics of formation of mesophase and anisotropic coke. Accordingly, resultant cokes were polished and surfaces examined by reflected polarized light in an optical microscope. The size, shape and extent of anisotropic development is discussed in terms of the conditions of carbonization and the rank of coal. In these systems a somewhat larger optical texture results in cokes produced at the higher carbonization temperatures. The temperature of onset of growth of anisotropic carbon in co-carbonizations was below that of either the coal or the decacyclene. Reactivities are evidently modified. The origins, growth and coalescence of growth units of anisotropic carbon in these cocarbonizations of coals with decacyclene are demonstrated. © 1979.
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收藏
页码:809 / 814
页数:6
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