【摘要】 测定了不同变质阶段的镜煤质(从长焰煤至无烟煤)以及不同种类的外皮质(孢子质、树皮质、琥珀)和丝炭质的热解失重,并与其粘结性指标关联。不同变质阶段镜煤质的失重曲线变化是有规律的,且外皮质的总失重和最大失重速率比镜煤质高得多。应用失重结果进行了热解动力学研究。以从热失重曲线上得到的初始反应物的重量计算初次热解反应活化能,得到良好的结果。且外皮质的活化能比镜煤质高得多。更多还原

【Abstract】 Vitrinite is separated from bituminous coals of different rank from long-flame to lean coal,and also various kinds of exinite(a sporinite,a suberinite(?) and a resinite)as well as a telinite and a fusinite.Weight loss determinations and pyrolytic kinetic study are carried out on these ma-cerals.Extrapolation of the differential weight loss curve gives the quan-tity of volatile matter evolved primarily during pyrolysis as the primary reactant,in place of the V.M.term conventionally determined by standard methods.These values are used to calculate the activation energy of pyrolysis by Arrhenius equation.A straight line on Arrhenius plot is obtained and the activation energy E of vitrinite from V.M.is E=52700- 845V.M.cal/g-mol Further,E of exinite is found far higher than that of vitrinte within the range of pyrolytic temperatures.更多还原