煤热失重动力学的研究

Study of the Coal Pyrolytic Kinetics by Thermogrametry

以具有Ｇａｕｓｓｉａｎ活化能分布的平行反应模型考察了我国煤化程度不同的八种煤的非等温热解过程。研究表明：煤热解的活化能呈Ｇａｕｓｓｉａｎ正态分布，其平均活化能介于２１０～２４５ｋＪ·ｍｏｌ－１之间，近似于高分子化合物的热解活化能。模型能够描述自低温到高温煤的非等温热解的全过程，对煤种和升温速率变化有宽广范围的适应性。

The data of weight loss, which come from the pyrolysises of & rank of Chinese coals bymeans of thermogrametric analysis under non-isothermal conditions, are fitted to the Gaussiandistributed-activation-energies model of coal pyrolysis, an infinite, independent, parallel reaction. Theresults indicate that the average activation energies of the model are in the range of 210-245kJ. mol-1,and close to that of the macro-molecular polymer, besides, the model can describe satisfactorily thewhole process of coal pyrolysis, and can be widely used in different rank of Chinese coal and variousheating rate.