风机选型计算

A150.8B7.50.8a0.85646.68b17.551h912.68v785.437522251010.4375C67.9858.1331.2635.741.41O8.493.384.624.410.67H4.013.021.952.1343.05S0.050.280.130.1629.43W10.809.81.83.132.03A7.2924.4659.6953.82N0.890.930.550.610.0099.514100100100.00219001035012275.00Q25985.99622233.7712071.2313764.9876207.83475311.462883.7153288.33892932.3937V0(NM3)6.8277022VRO2(NM3)1.2688848V0N2(NM3)5.4010048V0H2O(NM3)0.688956V0y7.3588456a1.2VN2-V0N21.078777VO20.2867635VH2O-V0H2O0.0219852Vy8.7463712风机8给水泵2283409.6凝结水泵4B27.66009723.61747331921.2疏水泵1Igr3500油泵6Igs947点火油泵2D260222冷油器4ypw0.02空冷器2ygl0.916射水泵4Qdw2631012361.26取样冷却器16Ipw1490.7Bj27.10689523.14512Qhz2.0271526afh0.9Qfh1.7784834Qz0.2486692Vg299912.0689000K11.1b88.3Vg1149956.0353400yvg110.6Vg2035600yvg200.4H13908.9422Hgl12510Hfd1600k211.2H212700Hgl27939Hfd250k221.2Ng1208.88827Ndg1241.87063Ng20Ndg20Vy258343.22234857.5al0.2ky1.1tp136Hy3040.8236^hgl1600504.2632^hyd600^hcc300^hyc473.85429.8742w27ky1.2Ny286.94788Ndy335.79007245.6424烟气含尘量6488.3874排放标准50除尘效率99.229392dy3.8861911台数2出口流速22选取dy4核算流速20.765911石灰石耗量h96.174268石灰石耗量d2308.1824石灰石耗量a577.045611154.091热效率0.2896799煤耗率0.4723494标准煤耗率0.4240024发电量600000000年耗煤量331921.1742.718.342.7292829.210752.01487761.7398912.347982162414111612163652300600141.5241313计算书二OO七年五月工程号:编制:校核:审核:主任工程师:工程:内蒙★★电厂项目负责人:1.1煤质项目符号单位设计煤种应用基碳Car％43.83应用基氧OAR％21.51应用基氢Hy％4.39应用基氮Nar％0.72全水War％5.35应用基灰Aar％24.02全硫Sar％0.18挥发份Vdaf％51.95低位发热量Qnet.arkJ/kg16929可磨系数Vo==4.3560Nm3/kg1.3、理论烟气量计算1）CO2和SO2产生量计算VRO2=VCO2+VSO2=1.866*Car/100+0.7*Sar/100=0.8191/Nm3/kg2）烟气中的含氮量计算VN2＝0.8*Nar/100+0.79*Vo=3.4470/Nm3/kg3)理论水蒸气含量计算VH2Oo=0.0124*War+0.111Har+0.00161*d*Vo=0.6238/Nm3/kg1.2、计算燃烧空气量0.0889*(Car+0.375Sar)+0.265*Hy-0.033*Oar煤质资料4）理论烟气量计算Vyo=VRO2+VN2+VH2Oo=4.8899/Nm3/kg1.4、实际烟气量计算1.21）过量空气中的O2和N2容积VN2-VN2o=0.79*（a-1）*Vo＝0.6882/Nm3/kgVO2＝0.21*（a-1）*Vo＝0.1830/Nm3/kg2)过量空气总的水蒸汽容积VH2O-VH2Oo=0.00161*d*(a-1)*Vo=0.014026345/Nm3/kg3）实际烟气量计算Vy=Vyo+VO2+(VN2-VN2o)+(VH2O-VH2Oo)=5.7751/Nm3/kg1.5、锅炉燃煤量B=(D*(Igr-Igs)+Dpw*(Ipw-Igs))/(ηgs*Qnet.ar)=15.32/t/h锅炉蒸发量90排污率0.02锅炉效率0.89给水焓947主蒸汽焓3500排污水焓1491煤仓153.1506669t1.6、计算燃煤量Bj=B*(100-q4)/100=14.75/t/h石灰石量0.745410332t/h炉膛出口过量空气系数：1.7、灰渣量计算Qhz=B*(Aar/100+(q4*Qnet.ar)/(100*8100*4.186))=3.68/t/h加入石灰石4.43t/h1)飞灰量计算afh=0.42Qfh=Bj*afh*Aar/100=1.49/t/h加入石灰石1.80t/h2)渣量计算Qz=Qhz-Qfh=2.19/t/h加入石灰石2.62t/h1.8、送风机选型风量计算当地大气压89.515kPa1.15Vg=k1*Bj*1000*aL*Vo*(273+tk)*101/(273*b)=107383m3/h一次风占60%64430m3/h二次风占40%42953m3/h107383Nm3/h132537.4m3/h60%一次风量79522.4216m3/h40%二次风量53014.9478m3/h56668Nm3/h一次风量78916.2167m3/h36834Nm3/h二次风量51295.2623m3/h选取一次风量80700m3/h二次风量54300m3/h1.9、送风机选型阻力计算送风机风量储备系数锅炉厂提供总风量修正按锅炉厂系统计算按锅炉厂系统计算一次风机阻力计算锅炉本体空气侧阻力15100Pa风道总阻力1000Pa风压储备系数1.2Hg=K2*∑Δh*((273+tk)/(273+tg))*(101/b)*(1.293/ρko)=19320Pa锅炉厂推荐19320Pa锅炉本体空气侧阻力7315Pa风道总阻力1000Pa风压储备系数1.25Hg=K2*∑Δh*((273+tk)/(273+tg))*(101/b)*(1.293/ρko)=10393.75Pa锅炉厂推荐11723.06317Pa1.10、送风机选型锅炉一次风机台数1台风量80700m3/h风压19320Pa风机效率η10.85机械效率η20.98电动机效率η30.9电动机备用系数1.1Ng=B*Vg*Hg/(3600*9.81*102*η1*η2*η3)＝635.06KW锅炉二次风机台数1台风量54300m3/h风压11723.06317Pa风机效率η10.85机械效率η20.98二次风机阻力计算电动机功率计算电动机功率计算电动机效率η30.9电动机备用系数1.1Ng=B*Vg*Hg/(3600*9.81*102*η1*η2*η3)＝259.28KW1.11、引风机选型计算1）风量计算1.20.3130℃Vy=k1*Bj*∑Vy*(273+tp)*101*1000/(273*b)=185059m3/h按锅炉厂数据计算烟气量146055Nm3/h修正192793m3/h选取192793m3/h烟囱高度120米出口流速27m/s2）风压计算2661Pa除尘器阻力1500Pa烟道阻力1000Pa烟囱阻力473.85Pa烟囱自生通风力337.7583Pa储备系数1.3Hy＝K2*∑Δh*((273+tp)/(273+ty))*(101/b)=6620Pa3）引风机选型锅炉本体烟气侧阻力风量储备系数炉后烟道漏风系数排烟温度风机台数1台风量192792.6m3/h风压6619.882893Pa电动机功率计算风机效率η10.85机械效率η20.98电动机效率η30.9电动机备用系数1.15Ny=B*Vy*Hy／（3600*9.81*102*η1*η2*η3）=543.5kW