理论燃烧温度计算9
条件:
焦比=419Ck=85.00%
煤比=118Cm=70.00%H2=3.32%H2O=0.50%
富氧率=1.54%鼓风湿度1.00%热风温度℃1100生铁含碳4.47%炉顶煤气成分%
CO CO2CH4H2N2
22.417.20.30.5159.59
计算参数:
鼓风含氧量O2b=0.2283吨铁入炉碳素Cf=438.75
鼓风含氮量N2b=0.7667碳素燃烧率Cn=0.798813
吨铁气化碳量Cg=394.05焦炭风口燃烧率Kf=0.752153
碳素燃烧率系数n=0.889428
吨铁风口碳量Cb=350.4792
煤粉碳占风口碳比例Cmb=0.235677
煤粉中总含氢量H2m=0.033756
鼓风平均热容Cpb=1.421kJ/m3.℃0.340kcal/m3.℃
炉缸煤气平均热容Cpg=1.51kJ/m4.℃0.361kcal/m4.℃
kg焦炭碳素风口物理热qk=2299kJ/kg550kJ/kg
kg碳素之煤粉分解耗热q'm=1254kJ/kg300kJ/kg
计算:
(1)按风口前燃烧每千克碳素计算Tf
风口燃烧千克碳素鼓风量Vb=4.086728m3
燃烧千克碳素生成煤气量Vg=5.167448m3
风口燃烧千克碳素全热量Qc=18027.44kJ/kgC
理论燃烧温度Tf=2203.052℃
(2)按每立方米鼓风计算Tf子项=4204.235
母项=1.901728
Tf=2210.744℃
(3)按每吨生铁计算Tf子项=1473497
母项=666.5163
Tf=2210.744℃。