热解温度和恒温时间对锦界煤焦-CO_2气化活性的影响

Effect of pyrolysis temperature and constant temperature time on gasification activitybetween CO_2 and Jin Jie coal char

在化学反应动力学控制实验条件下,利用自建固定床实验台研究了常压、不同气化温度下热解温度(650℃、800℃、900℃)、恒温时间(8 min、30 min、60 min)对锦界煤焦等温CO2气化反应活性的影响,并用不同模型求算动力学参数,实验结果表明:随着热解温度的提高和恒温时间的延长,锦界煤焦的气化活性逐渐降低,活化能逐渐增加。热解温度对锦界煤焦气化活性的影响比恒温时间的影响显著些。

The effect of pyrolysis temperature （650℃ , 800 ℃ , 900 ℃） and constant temperature time （8 min, 30 rnin, 60 min） on Jin Jie coal char isothermal gasification by carbon dioxide in the condition of normal pressure and different gasification temperature was studied under chemical controlled regime in a self-built fixed bed reactor. And the kinetics parameters were calculated with the different kinetic models. The results show that the gasification activity of Jin Jie coal char decreases and the activity energy increases along with the increment of pyrolysis temperature and the extension of constant temperature time. Compared with constant temperature time, the effect of pyrolysis temperature is more remarkable on the gasification activity of Jin Jie coal char.