Thermal Pyrolysis Kinetics of Lignitic Coal in Methane Atmosphere
Abstract: Thermogravimetric analysis (TGA) was carried out for Longkou lignitic coal with four different heating rate of 25˚C, 40˚C, 55˚C and 70˚C•min–1. The experimental results indicated a synergistic effect during methane and coal. The kinetic parameters, activation energies (E) and pre-exponential factors , of thermal pyrolysis for coal at dif- ferent conversion levels were correlated from the thermogavimetric data. The conversion dependent E and k0 values were obtained. The compensation effect is clearly observed from the straight line of the plot of versus E. It indicated that many parallel reaction with different rate parameters occur simultaneously during the pyrolysis of coal. The distribution functions, and , were then established satisfactorily by the distributed activation energy model (DAEM).
文章引用: 蔡俊青 , 乔金枝 (2012) 甲烷气氛下褐煤热解动力学研究。 化学工程与技术， 2， 37-41. doi: 10.12677/hjcet.2012.22007
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