煤气锅炉燃烧计算

宏阳钢铁公司燃烧计算（煤气）序符单项目公式及依据号号位一原始资料高炉煤气焦炉煤气混合煤气（体积比）（一）煤气资料高炉：焦炉＝3：21二氧化碳CO2%14.202.409.482氧O2%0.400.600.483一氧化碳CO%25.807.0018.284甲烷CH4%0.6021.008.765氢H2%1.7063.7026.506碳氢化合物C2H4%0.002.000.807氮N2%57.303.3035.708发热量QnetkJ/Nm33300.0016400.008540.00（二）锅炉型号及参数1锅炉型号220t/h煤气锅炉2蒸发量Dgt/h186.00220.00220.003过热蒸汽温度tgr0C540.00540.00540.004过热蒸汽压力pgrMPa9.819.819.815过热蒸汽焓igrkJ/kg3478.893478.893478.896汽包压力pMPa10.9010.9010.907排污率αps/0.020.020.028排污水焓ipskJ/kg1446.271446.271446.2710给水温度tgs0C233.50233.50233.5011给水压力pgsMPa11.0011.0011.0012给水焓igskJ/kg914.52914.52914.5213锅炉效率（低位值）ηgl/0.880.880.8814机械未完全燃烧损失q4%0.000.000.0015排烟温度tpy℃160.00160.00160.00设计工况校核工况（60％高炉+407％焦炉(体积比））第1页，共10页宏阳钢铁公司燃烧计算（煤气）（三）当地大气压pbhPa927.10927.10927.10气压修正系数θ1.091.091.09二燃料消耗量计算1燃料消耗量Bg103Nm3/hDg((igr-igs)+αps(ips-igs))/(Qydwηgl)165.6439.4275.71三烟气各处流量计算1理论空气量VoNm3/Nm30.0476［0.5CO+0.5H2+2CH4+1.5H2S+∑（m+n/4）CmHn-O2］0.693.941.992N2理论体积VN20Nm3/Nm30.79V0+0.01Nar1.123.141.933RO2理论体积VRO20Nm3/Nm30.01×(CO2+CO+H2S+CH4+∑mCmHn)0.410.340.384水蒸汽理论体积VH2O0Nm3/Nm30.01(H2S+H2+2CH4+0.124dgr+∑n/2CmHn)+0.0161V00.051.170.505含湿量dgrg/Nm3通常取dgr=10g/Nm310.0010.0010.006燃烧产物理论体积Vy0Nm3/Nm3VN20+VRO20+VH2O01.584.662.817干燃烧产物理论体积Vgy0Nm3/Nm3VN20+VRO201.533.492.318空预器出口过剩空气系数αky/1.401.401.409空预器出口燃烧产物实际体积VdwyNm3/Nm3Vy0+0.0161(αky-1)V0+(αky-1)V01.866.263.6210空预器出口烟气标准体积Vy103Nm3/hVdwy×Bg308.13246.89274.1411除尘器出口过剩空气系数αcc/1.001.001.0012除尘器出口燃烧产物实际体积VdwccNm3/Nm3Vy0+0.0161(αcc-1)V0+(αcc-1)V01.584.662.8113除尘器出口干烟实际体积VdwccNm3/Nm3Vgy0+0.0161(αcc-1)V0+(αcc-1)V01.533.492.3114除尘器出口标准干烟气量Vcc103Nm3/hVdwcc×Bg252.79137.54174.9715烟囱出口过剩空气系数αyc/1.551.551.5516烟囱出口燃烧产物实际体积VdwycNm3/Nm3Vy0+0.0161(αyc-1)V0+(αyc-1)V01.976.863.9217烟囱出口烟气标准体积Vyc103Nm3/hVdwyc×Bg325.61270.56297.1218冷风温度to0C20.0020.0020.00四烟气量计算第2页，共10页宏阳钢铁公司燃烧计算（煤气）1空预器出口烟气标准体积Vy103Nm3/h308.13246.89274.142空预器出口理论烟气量Vy0Nm3/Nm31.584.662.813空预器出口烟气实际体积Qpy103m3/hVy×θ×(273+tpy)/273534.13427.97475.224空预器出口至除尘器进口烟道漏风系数△α1/总长L=30m,每10m为0.010.030.030.035电除尘器进口温度t10C(αky×tpy+△α1×t0)/(αky+△α1)157.06157.06157.066电除尘器进口燃烧产物实际体积Vpy1Nm3/Nm3Vky+(△α1+αky-1)*V01.886.363.677电除尘器进口烟气量Qpy1103m3/hVpy1×Bg×(273+t1)×θ/273535.16431.37478.118电除尘器漏风系数△α2/0.000.000.009电除尘器出口过剩空气系数αcc/αky+△α1+△α21.001.001.0010除尘器出口温度t20C(αky×tpy+∑△α×t0)/(αky+∑△α)157.06157.06157.0611除尘器出口燃烧产物实际体积Vpy2Nm3/Nm3Vy0+∑△α×V01.886.363.6712除尘器出口烟气量Qpy2103m3/hVpy2×Bg×(273+t2)×θ/273535.16431.37478.1113除尘器出口至吸风机进口烟道漏风系数△α3/总长L=20m,每10m为0.010.000.000.0014吸风机进口温度t30C(αky×tpy+∑△α×t0)/(αky+∑△α)157.06157.06157.0615吸风机进口燃烧产物实际体积Vpy3Nm3/Nm3Vy0+∑△α×V01.886.363.6716吸风机进口烟气量Qpy3103m3/hVy3×Bg×(273+t3)×θ/273535.16431.37478.1117吸风机出口至烟囱进口烟道漏风系数△α4/钢烟道L=10m,每10m为0.01;砖烟道L=20m,每10m为0.050.020.020.0218烟囱进口温度t40C(αky×tpy+∑△α×t0)/(αky+∑△α)155.17155.17155.1719烟囱燃烧产物实际体积Vpy4Nm3/Nm3Vy0+∑△α*V01.896.433.7120烟囱进口烟气量Qpy4103m3/hVy4×Bg×(273+t4)θ/273536.74434.79481.18四烟道局部阻力计算0煤气密度ρokg/Nm30.0125CO+0.0009H2+Σ（0.54m+0.045n)CmHn/100+0.0197CO2+0.0125N2+0.0143O20.620.380.531锅炉本体阻力ΔhgPa厂家资料1400.901400.901400.902蒸汽吹灰量gkg/kg锅炉厂给定0.000.000.003空预器出口烟气比重r0ykg/Nm3(ρo+1.306αkyV0+g)/Vky1.011.211.15第3页，共10页宏阳钢铁公司燃烧计算（煤气）4空预器出口烟气实际比重rpykg/m3r0y×273/(273+tpy)0.640.760.735除尘效率ηcc%0.000.000.006除尘器出口烟气比重r0ykg/Nm3(ρo+1.306αkyV0+g)/Vky1.011.211.157除尘器出口烟气实际比重rykg/m3r0y×273/(273+t2)0.640.770.738除尘器入口前烟道阻力Δh1PaζW2ry/2g159.74124.07144.74烟气量Qpy3m3/h热力计算结果535157.20431367.44478111.71流速wm/s12.0012.0012.00烟道面积Sm2Qpy1/w/360012.399.9911.07长amm3.403.403.40宽bmm2.602.602.60计算流速wm/sQpy/(3600×a×b)16.8213.5515.02当量直径Ddlm2ab/(a+b)2.952.952.95管道长度Lm30.0030.0030.00长度当量阻力系数ζ0λ×L/Ddl0.120.120.12接口大小头阻力系数ζ1查表0.100.100.1090O弯头3件局部阻力ζ2查表3×0.51.501.501.50总阻力系数ζζ0+ζ1+ζ21.721.721.72烟气比重rykg/m3r0y×273/(273+t1)0.640.770.739静电除尘器阻力ΔhDCPa厂家资料0.000.000.0010吸风机入口段烟道阻力ΔhrDPaζWrD2ry/2g102.0379.2592.45烟气量Qpy3m3/h热力计算结果535157.20431367.44478111.71流速wm/s12.0012.0012.00烟道面积Sm2Qpy1/w/360012.399.9911.07长amm3.403.403.40宽bmm2.602.602.60计算流速wm/sQpy/(3600×a×b)16.8213.5515.02当量直径Ddlm2ab/(a+b)2.952.952.95管道长度Lm0.000.000.00长度当量阻力系数ζ0λ×L/Ddl0.000.000.0090O弯头2件局部阻力ζ2查表2×0.51.001.001.00第4页，共10页宏阳钢铁公司燃烧计算（煤气）风门1件阻力系数ζ3查表0.100.100.10总阻力系数ζζ0+ζ2+ζ31.101.101.10烟气比重rykg/m3r0y×273/(273+t3)0.640.770.7311风机出口至烟囱入口阻力ΔhczPaζWrD2ry/2g220.04170.90199.37烟气量Qpy3m3/h热力计算结果535157.20431367.44478111.71流速wm/s12.0012.0012.00烟道面积Sm2Qpy1/w/360012.399.9911.07长amm3.403.403.40宽bmm2.602.602.60计算流速wm/sQpy/(3600×a×b)16.8213.5515.02当量直径Ddlm2ab/(a+b)2.952.952.95管道长度Lm20.0020.0020.00长度当量阻力系数ζ0λ×L/Ddl0.100.100.1045O弯头2件局部阻力ζ1查表0.260.260.2690O弯头1件局部阻力ζ2查表1×0.50.500.500.50风门1件阻力系数ζ3查表0.100.100.10烟囱入口阻力系数ζ4查表1.401.401.40总阻力系数ζζ0+ζ1+ζ2+ζ3+ζ42.362.362.36烟气比重rykg/m3r0y×273/(273+t4)0.650.770.7312烟囱阻力ΔhczPa1.3Wyt2ryt/2g965.63757.4779.29出口直径Dm出口直径=φ24002.002.002.00出口面积Sm21/4×∏×D23.143.143.14计算流速WrDm/sQpy4/(3600×S)47.4838.4612.77烟气比重rykg/m3r0y×273/(273+t4)0.650.770.7313烟囱自身通风力ΔhzsPa(H-H1)×(rk-ryt)g293.28226.43247.03烟囱高度Hm60.0060.0060.00烟道进口高度H1m6.006.006.0014吸风机总阻力ΔhPa∑Δh2555.062306.161669.7115吸风机选型第5页，共10页宏阳钢铁公司燃烧计算（煤气）风量备用系数Kq1.101.101.10风压备用系数Ky1.201.201.20吸风机风量Qm3/hKq×Qpy3588672.92474504.18525922.88吸风机压头PPaKy×△h3066.082767.392003.6516风量换算Q20mn3/hQ