Influence of added coke dust and pyrite on the yield and characteristics of coking intermediates from low-rank bituminous coal

Low-rank bituminous coal and its blends with 2.5 wt% of coke dust and with a mixture of 2.5 wt% of coke dust and 0.25 wt% of pyrite were pyrolysed in a quartz reactor taking 20–25 g samples. In the presence of the additives some changes were observed in the yields of solid, liquid and gaseous produc...

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Bibliographic Details
Published in:Fuel (Guildford) 1994-06, Vol.73 (6), p.967-970
Main Authors: Ugay, M.Yu, Shchipko, M.L., Rusyanova, N.D., Kuznetsov, B.N., Rubaylo, A.I., Pavlenko, N.I., Korniyets, E.D.
Format: Article
Language:English
Subjects:
coal
reactivity
structure
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Summary:Low-rank bituminous coal and its blends with 2.5 wt% of coke dust and with a mixture of 2.5 wt% of coke dust and 0.25 wt% of pyrite were pyrolysed in a quartz reactor taking 20–25 g samples. In the presence of the additives some changes were observed in the yields of solid, liquid and gaseous products of pyrolysis in the 350–450 °C range. The additives also influenced the mesophase composition. The formation of substances soluble in dimethylformamide but insoluble in hexane and chloroform (α-fraction) was shifted to higher temperatures of pyrolysis by the additives. This effect resulted in increases in coke strength and anisotropy.
ISSN:0016-2361
1873-7153
DOI:10.1016/0016-2361(94)90296-8