Experimental research on the pyrolysis and gasification of randomly packed straw pellets was conducted with an emphasis on the\r\nreactive properties of the shrinking porous structure of the pellets. The apparent kinetics of such pyrolysis was approximated by\r\nthe random pore, grain, and volumetric models. The best approximation results were obtained with the grain and random pore\r\nmodels. The self-organized oscillations of the pellet conversion rate during pyrolysis were observed. Two complementary explanations\r\nof the phenomenon are proposed.
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