Co-pyrolysisi reaction and interaction effects of coal-biomass(corn stalk) blends

The pyrolysis characteristic of coal (lignite or hard coal) mixed with corn stalk in different pro- portions was studied with a thermogravimentric analyzer.The results show the pyrolysis of mixture is mainly acted by corn stalk in low temperature (below 400℃),and so do it by coal in high temperature (600～800℃);The corn stalk can do favor to the pyrolysis process of coal by reducing the temperature of coal's pyrolysis,but this effect would be mitigated by the corn stalk's increase.Furthermore the phenomenon of lignite is clearer than that of hard coal.The compared trial in different heating rates(as 10℃/min and 20℃/min) was done to speculate the effect on the co-pyrolysis,and found that both the temperature of the co-pyrolysis and the remanders of the pyrolysis increased.