锅炉热力计算(最全)-2014

燃烧计算（不投脱硫工况1）设计煤种校核煤种一原始数据1锅炉最大连续蒸发量Dgrt/h锅炉厂提供数据6706702过热器出口蒸汽压力PgrMPa(g)锅炉厂提供数据13.7313.733过热器出口蒸汽温度tgr℃锅炉厂提供数据5405404再热器蒸汽流量Dzrt/h锅炉厂提供数据553.76553.765再热器进口蒸汽压力PzrjMPa(g)锅炉厂提供数据2.6612.6616再热器出口蒸汽压力PzrcMPa(g)锅炉厂提供数据2.3952.3957再热器进口蒸汽温度tzrj℃锅炉厂提供数据326.7326.78再热器出口蒸汽温度tzrc℃锅炉厂提供数据5405409省煤器进口给水温度tgs℃锅炉厂提供数据254.1254.110省煤器进口给水压力PgsMPa(g)15.815.811汽包压力PqbMPa(g)15.115.112锅炉排污率ηpw0.020.0213锅炉效率ηg锅炉厂提供数据0.920.9214机械未完全燃烧损失q4暂取0.0050.00515飞灰份额αfh暂取0.90.916空预器出口一次风温tkyⅠ℃32031817空预器出口二次风温tkyⅡ℃33132718空预器出口烟气温度（修正后)tpy℃14514519空预器进口一次风温tkyⅠ'℃锅炉厂提供数据252520空预器进口二次风温tkyⅡ'℃锅炉厂提供数据232321空预器一次风至二次风漏风量GⅠ→Ⅱkg/s0022空预器二次风至烟气漏风量GⅡ→烟kg/s锅炉厂提供数据8.448.4423空预器一次风至烟气漏风量GⅠ→烟kg/s锅炉厂提供数据2.442.4424炉膛出口过剩空气系数αl估取1.21.225炉膛漏风系数△αl估取0.010.0126过热器漏风系数△αgr估取0.030.0327再热器漏风系数△αzr估取0.030.0328省煤器漏风系数△αsm估取0.020.0229空预器漏风率△Lky锅炉厂提供数据0.050.0530除尘器漏风率△Lc估取0.10.1公式或来源序号名称符号单位第1页共65页燃烧计算（不投脱硫工况1）31每十米钢烟道漏风系数△αyd估取0.010.0132当地大气压PkPa当海拔高度高于300m时对容积流量和速度做修正：P0/PP0取固定值，102.1102.133标准大气压P0kPa见《制粉规程》第98页，本工程不用修正，因此取比值为1（实际P=102.1）102.1102.134冷风温度tlf℃202035夏季通风室外计算温度tx℃暖通提供272736湿空气密度(高于100℃)ρkrkg/Nm31.2851.28537湿空气密度(低于100℃)ρklkg/Nm31.3061.30638干空气密度ρkgkg/Nm31.2931.29339磨煤机运行台数n选用MPS磨5台（4＋1运行）45二燃料特性1收到基水分Mt(Mar)%电厂提供数据9.5316.192空干基水分Mad%电厂提供数据2.666.473干燥无灰基挥发分Vdaf%电厂提供数据46.1144.704收到基灰分Aar%电厂提供数据35.9530.695收到基碳Car%电厂提供数据41.9240.136收到基氢Har%电厂提供数据2.832.657收到基氧Oar%电厂提供数据8.649.338收到基氮Nar%电厂提供数据0.620.639收到基硫Sar%电厂提供数据0.510.3810收到基低位发热量Qar,net,pkJ/kg电厂提供数据1455013480kcal/kg3480322411哈氏可磨性系数HGI电厂提供数据606212灰变形温度DT℃电厂提供数据1350124013灰软化温度ST℃电厂提供数据1390129014灰流动温度FT℃电厂提供数据14401350验算成份总和%100.00100.00收到基低位发热量(门得列也夫公式)Qar,net,pkcal/kg38233573收到基低位发热量(日本公式)Qar,net,pkcal/kg三燃料量计算1过热蒸汽焓igrkJ/kg由Pgr,tgr查表得34353435第2页共65页燃烧计算（不投脱硫工况1）2再热蒸汽进口焓izrjkJ/kg由Pzrj,tzrj查表得3068.73068.73再热蒸汽出口焓izrckJ/kg由Pzrc,tzrc查表得355135514给水焓igskJ/kg由Pgs,tgs查表得1105.61105.65排污水焓ipwkJ/kg由Pqb查表得161516156锅炉实际耗煤量Bgt/hBg=(Dgr(igr－igs)+Dgr×ηpw×(ipw－igs)+Dzr(izrc－izrj))/(ηg×Qar,net,p)137.05147.937锅炉计算耗煤量Bjt/hBj=Bg(1-q4)136.37147.19四理论空气量及理论烟气量1理论空气量V0Nm3/kgV0＝0.0889(Car+0.375Sar)+0.265Har－0.0333Oar4.2063.9722燃烧产物理论体积V0N2Nm3/kgV0N2＝0.79V0+0.008Nar3.3283.143V0RO2Nm3/kgV0RO2＝1.866(Car+0.375Sar)×10-20.7860.751V0H2ONm3/kgV0H2O＝0.111Har+0.0124Mt+0.0161V00.5000.5593理论烟气量V0yNm3/kgV0y＝V0N2+V0RO2+V0H2O4.6134.4534理论干烟气量V0gyNm3/kgV0gy＝V0N2+V0RO24.1133.894五烟气量计算1空气预热器出口烟气量⑴空预器入口过剩空气系数αky'αky'=αl+△αgr+△αzr+△αsm1.281.28⑵空预器漏风系数△αky△αky=△Lky(V0y+1.0161(αky'-1)V0)/V00.06910.0703⑶空预器出口过剩空气系数αpyαpy=αky'+△αky1.34911.3503⑷空预器出口燃烧产物实际体积VpydwNm3/kgVpydw=V0y+1.0161(αpy-1)V06.10535.8667⑸空预器出口干烟气实际体积VgydwNm3/kgVgydw=V0gy+(αpy-1)V05.58165.2855⑹空预器出口烟气量Vpym3/hVpy=Vpydw×Bj×1000×(tpy+273)/273×P0/P12747701322202m3/sVpy/3600354.10367.28Nm3/hVpydw×Bj×1000832565863544每台空预器出口烟气量m3/sVpy/2177.05183.64⑺空预器出口烟气比重γpykg/m3γpy=(1-0.01Aar+1.306αpy×V0)/Vpydw×273/(273+tpy)×P/P00.86120.8569⑻空预器出口干烟气量Vpygm3/hVpyg=Vgydw×Bj×1000×(tpy+273)/273×P0/P11654321191204m3/sVpyg/3600323.73330.89Nm3/hVgydw×Bj×1000761155777988kg/s(Vpyg/3600)×γpy278.81283.542除尘器进口处烟气量第3页共65页燃烧计算（不投脱硫工况1）⑴空预器出口至脱硫除尘岛入口钢烟道长度Lyd110m估计3.53.5⑵空预器出口至脱硫除尘岛入口钢烟道漏风系数△αyd1△αyd1=Lyd1×△αyd0.0350.035⑶脱硫除尘岛进口过剩空气系数αc'αc'=αpy+△αyd11.384071.38528⑷脱硫除尘岛进口燃烧产物实际体积Vc'dwNm3/kgVc'dw=Vpydw+1.0161△αyd1×V06.2556.008⑸脱硫除尘岛进口烟气温度tc'℃tc'=tpy145.0145.0⑹脱硫除尘岛进口烟气量Vc'm3/hVc'=Vc'dw×Bj×1000×(tc'+273)/273×P0/P13060021354036m3/sVc'/3600362.78376.12Nm3/hVc'dw×Bj×1000852963884335⑺脱硫除尘岛进口烟气比重γc'kg/m3γc'=(1-0.01Aar+1.306αc'×V0)/Vc'dw×273/(273+tc')×P/P00.86070.8565⑻脱硫除尘岛进口干烟气实际体积Vc'gdwNm3/kgVc'gdw=Vgydw+△αyd1×V05.735.42⑼脱硫除尘岛进口干烟气温度tc'g℃tc'g=tc'145.0145.0⑽脱硫除尘岛进口干烟气量Vc'gm3/hVc'g=Vc'gdw×Bj×1000×(tc'g+273)/273×P0/P11961681222534m3/sVc'g/3600332.27339.59Nm3/hVc'gdw×Bj×1000781230798449(11)脱硫除尘岛进口干烟气比重γc'gkg/m3γc'g=γc'×Vc'dw/Vc'gdw0.93980.94863脱硫除尘岛出口处烟气量⑴脱硫除尘岛漏风系数△αc△αc=△Lc(V0y+1.0161(αc'-1)V0)/V00.148710.15127⑵脱硫除尘岛出口过剩空气系数αcαc=αc'+△αc1.532781.53655⑶脱硫除尘岛出口燃烧产物实际体积VcdwNm3/kgVcdw=Vpydw+1.0161(△αyd1+△αc)×V06.8906.618⑷脱硫除尘岛出口烟气温度tc℃tc'=tpy145.0145.0⑸脱硫除尘岛出口烟气量Vcm3/hVc=Vcdw×Bj×1000×(tc+273)/273×P0/P14387041491620m3/sVc/3600399.64414.34Nm3/hVcdw×Bj×1000939632974192⑹脱硫除尘岛出口烟气比重γckg/m3γc=(1-0.01Aar+1.306αc×V0)/Vcdw×273/(273+tc)×P/P00.85880.8549⑺脱硫除尘岛出口干烟气实际体积VcgdwNm3/kgVcgdw=Vgydw+(△αyd1+△αc)×V06.356.03⑻脱硫除尘岛出口干烟气温度tcg℃tcg=tc145.0145.0⑼脱硫除尘岛出口干烟气量Vcgm3/hVcg=Vcgdw×Bj×1000×(tcg+273)/273×P0/P13267681357938m3/sVcg/3600368.55377.20Nm3/hVcgdw×Bj×1000866526886883⑽脱硫除尘岛出口干烟气比重γcgkg/m3γcg=γc×Vcdw/Vcgdw0.93120.93914引风机进口处烟气量第4页共65页燃烧计算（不投脱硫工况1）⑴脱硫除尘岛出口至引风机入口钢烟道长度Lyd210m估计44⑵脱硫除尘岛出口至引风机入口钢烟道漏风系数△αyd2△αyd2=Lyd2×△αyd0.040.04⑶引风机进口过剩空气系数αxjαxj=αc+△αyd21.57281.5766⑷引风机进口燃烧产物实际体积VxjdwNm3/kgVxjdw=Vpydw+1.0161(△αyd1+△αc+△αyd2)×V07.0616.780⑸引风机进口烟气温度txj℃145.0145.0⑹引风机进口烟气量Vxjm3/hVxj=Vxjdw×Bj×1000×(txj+273)/273×P0/P14743981528002m3/sVxj/3600409.55424.44Nm3/hVxjdw×Bj×1000962944997953⑺引风机进口烟气比重γxjkg/m3γxj=(1-0.01Aar+1.306αxj×V0)/Vxjdw×273/(273+txj)×P/P00.85830.8545⑻引风机进口干烟气实际体积VxjgdwNm3/kgVxjgdw=Vgydw+(△αyd1+△αc+△αyd2)×V06.52256.1842⑼引风机进口干烟气温度txjg℃txjg=txj145.0145.0⑽引风机进口干烟气量Vxjgm3/hVxjg=Vxjgdw×Bj×1000×(txjg+273)/273×P0/P13618961393743m3/sVxjg/3600378.30