METAMORPHIC GRAIN PYROLYSIS AND KINETIC STUDY

摘要

Thermo-gravimetric analysis is used to study the pyrolysis characteristics of four metamorphic grain samples. Li Chung-Hsiung model is used to determine the kinetic parameters, including activation energies, correlation coefficient and frequency factor. The results indicate that the kinetic characteristics are well described. With the heating rate increases, the curve of sample weight loss is moving to the high temperature zone. Metamorphic rice and wheat show the same change trend in three different heating rates, and random I, II modes should be used to get better linear relationship. A_2 mode is employed by the same sample in, different heating rates.