Rapid pyrolysis of coals in a down-flow reactor. (II). Analysis of Taiheiyo coal tars by GC/MS.:Analysis of Taiheiyo Coal Tars by GC/MS

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In the previous paper, a rapid pyrolysis of coals in a down-flow reactor, heated by a carrier such as silica sand, was shown to become a feasible prosess in a coal pyrolysis and combustion combined system. In the present study, fractions below 360°C of Taiheiyo coal tars, recovered in the previous experiments, were analyzed by a GC/MS to obtain basic data for their uses.<BR>A tar fraction produced at 600°C contained 453 components, which were n-paraffins, n-oleffins, alkylbenzenes, alkylindanes, alkyltetralins, alkylnaphthalenes, alkylbiphenyls, alkyldiphenylmethanes, alkylanthracenes, alkylphenanthrenes, alkylphenols, alkylnaphthols, alkylpyrenes and alkylfluorathenes.<BR>Otherhand, a tar fraction produced at 800°C was secondarily pyrolyzed and consisted in 249 components, which mainly were phenols, naphthalens, biphenyls, acenaphthenes, fluorenes, anthracenes and phenanthrenes. Pyridines and quinolines were also contained as basic components.
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