通过模拟焦炉燃烧室立火道炭化室与燃烧室隔墙热流密度变化，计算得到不同热流密度下焦炉各部分温度的变化。对不同外循环率，随着热流密度的增大，立火道出口烟气温度线性降低。对不同外循环率，随着热流密度的增大，出口处NO浓度逐渐降低。

By simulating the change of heat flux density between the vertical flue carbonization chamber and the partition wall of the combustion chamber, the temperature change of each part of the coke oven under different heat flux is calculated. For different external circulation rates, with the increase of heat flux, the flue gas temperature at the outlet of vertical fire duct decreases linearly. For different external circulation rates, the NO concentration at the outlet decreases gradually with the increase of heat flux.