Thermo-gravimetric analysis and gasification reaction kinetics of corn cob
Weiwei Shan · Journal of Anhui Polytechnic University · 2012
The corn cob gasification can be divided into three stages by using thermo-gravimetric analysis experiment in this paper:Water evaporation stage、volatile precipitation stage and coke stage;When heating rate is 20 ℃/min,the material of the biggest weightlessness rate is only 85.75%,the smallest of all the heating rate;When heating rate is 10 ℃/min,the biggest weightlessness rate of the material can reach 97.94%.Taking the curve at the heating rate of 5 as the research object,the gasification process of corn cob volatile precipitation stage,under the temperature of 250 ℃～330 ℃,gasification reaction belongs to level 2 reaction,fitting equation is y=-2 332.3x-7.953 4,the activation energy E and frequency factor A were 19.4 kJ/mol and 3.4×104 min-1;When the temperature at 330 ℃～530 ℃ stage,gasification reaction belongs to level 1 reaction,with fitting equation is y=-1 960.5x-9.707 6,the activation energy E and frequency factor A were 16.3 kJ/mol and 5.0×103 min-1.