Analysis of activities and release of gaseous products during pyrolysis of coal

The distribution of products during coal pyrolysis and its activities is closely related to the composition and structure of coal,the process conditions of pyrolysis.In this paper the internal factors of the coal (the characteristics of composition) and the external factors (the process conditions) during pyrolysis of coal are studied.The various factors influencing on the pyrolysis activities of coal and the formation and release of gaseous products are also analyzed.