The thermogravimetric analysis study on pyrolysis character of coal has been carried out by using the thermal analysis method

the influence of particle size and temperature rise rate upon the weight loss process in coal pyrolysis being approached

pointing out the influence of coal petrologic components’ enrichment during coal pulverizing process upon pyrolysis of coal is larger than that of heat transfer and mass transfer if the particle size to be smaller than 0.25 mm. Based on the test data

a model of pyrolysis dynamics model has been established

the integration and differentiation methods are respectively used to find the solutions of pyrolysis dynamics parameters. The stage number of coal pyrolysis reaction obtained to be 3

the calculated result of pyrolysis reaction dynamics parameters can really reflect the pyrolysis state of coal.