安徽电气职院600MW直流锅炉培训讲义02锅炉概况.docx

第二章锅炉概况1.1 锅炉技术规范1.1.1 锅炉型式华润常熟锅炉为超临界参数变压运行本生直流锅炉，单炉膛、一次再热、平衡通风、露天布置、固态排渣、全钢构架、全悬吊结构n型锅炉。由哈尔滨锅炉厂有限责任公司引进三井巴布科克能源公司（MitSUiBabCOCkEnergy1.imited）技术生产。锅炉型号:HG1952/25.4YM1型。其中HG表示哈尔滨锅炉厂，1952表示该锅炉BMCR工况蒸汽流量，单位是T/HT/Ho25.4表示该锅炉额定工况蒸汽压力，单位是MPa,YMl表示该锅炉设计媒种为烟煤、设计序列号为1。锅炉主要设计参数见表2-1表21锅炉主要设计参数名称单位BMCRBR1.ECR过热蒸汽流量t/H1952.211859.251740.3过热器出口蒸汽压力MPa(g)25.425.425.4过热器出口蒸汽温度C543543543再热蒸汽流量t/H1588.51508.81427.7再热器进口蒸汽压力MPa(g)4.824.574.35再热器出口蒸汽压力MPa(g)4.634.394.18再热器进口蒸汽温度C307301296再热器出口蒸汽温度c569569569省煤器进口给水温度°C289286282预热器出口一次风272.8269.4266.1预热器出口二次风c302.8297.2291.7炉膛出口温度C1013999979空气预热器出口（未修正）C134130.6127.2空气预热器出口（修正后）c130127124燃料消耗量t/H224215203计算热效率（按1.HV）%93.8293.9693.97保证热效率%93.4593.6截面热负荷MWm24.284.113.89容积热负荷kWm383.179.975.6一次风率%202021省煤器出口过剩空气系数1.191.191.19注：1.压力单位中“g”表示表压。“a”表示绝对压力（以后均同）。2.锅炉BR1.(BoilerRating1.oad)工况对应于汽机TR1.(TurbineRating1.oad)工况，锅炉ECR(EconomicRating1.oad)工况对应于汽机THA(TurbineHeatconsumptionAssessment)工况，锅炉BMCR(BoilerMaximalContinuumRate)工况对应于汽机VWo(ValveWholeOpen)工况。1.1.2锅炉设计条件1)煤种：华润常熟燃煤设计燥种为神府东胜煤，校核煤种1为混煤，校核煤种2为大同煤，煤质分析数据及灰份组成如表22：表2-2煤质分析数据及灰份组成项目单位设计煤种校核煤种1校核煤种2工业分析收到基低位发热值QmarkJ/kg238262087021156收到基全水份Mt%12.112.936.84收到基灰份Aar%8.7921.0226.68可燃基挥发份Vdaf%383928空气干燥基水份Mad%8(暂定)3.31元索分析收到基碳Car%64.454.1454.5收到基氢Har%3.643.513.36收到基氧Oar%10.056.837.26收到基氮Nar%0.790.800.73收到基全硫Sbar%0.430.770.63可磨性系数HGI506858灰变形温度DT(Ti)116013601160灰软化温度ST(T2)119014401250灰熔化温度FT(T3)129014901330灰分析SiO2%3654.1450.41Al2O3%1526.8519.23Fe2O3%106.8220.26CaO%264.233.93TiO2%1.26K2O及Na2O%1.50.85+0.182.33MgO%1.72.211.27SO3%2.4P2O5%其它%1.062)点火及助燃油工业分析组成见表23：表2-3点火及助燃油工业分析项目单位数值油种#0轻柴油运动粘度(20时)mm2s3.08.0实际胶质mg100mI<70酸度mgKOH100mI<10硫含量%<1.0水份痕迹机械杂质无项目单位数值凝固点>0闭口闪点不低于65低位发热值Qnet.arkJ/kg461583）锅炉给水及蒸汽品质见表24：表24锅炉给水及蒸汽品质表项目单位数值正常时补给水量T/H97.5（按B-MCR的5%计）启动或事故时补给水量T/H156（按B-MCR的5%计）必总硬度mol/10纭Tk溶解氧（化水处理后）g30200ZK庙铁g10曷铜gl5里二氧化硅ug/l15准油mg/lOPH值（25°C）8.09.0电导率（25eOUS/cmW0.2钠gl5钠gl<5蒸汽二氧化硅Ug/kg<15品质电导率（25C）yS/cm<0.2标准铁ug/kg10铜ug/kg5表25锅炉性能参数汇总表负荷项目单位BMCRBR1.75%BMCR50%BMCR40%BMCR30%BMCR高加切除1、蒸汽及水流量过热器出口t/H195018521462.59757805951493.5再热器出口t/H1644155812558576935341474省煤器进口t/H1833174113759177335591404过热器一级喷水t/H58.555.543.829.323.51844.7过热器二级喷水t/H58.555.543.829.323.51844.7再热器喷水t/H2、蒸汽及水压力/压降过热器出口压力MPa25.425.2723.3914.6312.09.1524.86一级过热器压降（进出口集箱之间）MPa0.36903280.250.190.160.130.2屏式过热器压降（进出口集箱之间）MPa0.450.410300.220.180.140.263末级过热器压降（进出口集箱之间）MPa0.5910.5370.390.290.230.180354过热器总压降（进出口集箱之间）MPa1.411.2750.940.700.570.450.82再热器进口压力MPa4.654.4033.562.411.9271.4594.265再热器压降MPa0.190.180.1460.100.080.0630.167再热器出口压力MPa4.464.4233.4162.311.8471.3964.098启动分离器出口压力MPa26.826.5523.3015.3312.579.625.7水冷壁压降MPa1.831.651.230.920.80.681.06省煤器压降（不含位差）MPa0.150.1350.08440.040.0250.0150.126省煤器重位压头MPa000OOOO省煤器进口压力MPa28.7828.3424.6416.2913.410.326.893、蒸汽和水温度过热器出口543543543543543543543负荷项目单位BMCRBR1.75%BMCR50%BMCR40%BMCR30%BMCR高加切除过热汽温度左右偏差C±5±5±5±5±5±5±5再热器进口302297288.6300.6303.3309.7296.1再热器出口569569569569552537569再热汽温度左右偏差±5±5±5±5±5省煤器进口289286266.8244.5232.7218.9190.9省煤器出口317313.4299.3278.8267.5252.1249.8过热器减温水C280276266.8244.5232.7218.9190.9再热器减温水193.5190.5181.5166157.9148.4190.9启动分离器出口409408.3399.1369.1366.1317.8398.14、空气流量空气预热器进口一次风Nm3Zh329720320546282008227535200964168774306680空气预热器进口二次风（不包括热风再循环）Nm3Zh1382190131704510795578461577758176093641260309空气预热器出口一次风Nm3Zh240700232228197929148049128190102359222161空气预热器出口二次风Nm3Zh1378650131315910806178461577680455991921256610空气预热器中的漏风一次风漏到烟气Nm3Zh68180678286358961116597035652364910一次风漏到二次风Nm3Zh2084020490204901837013071989219609二次风漏到烟气Nm3Zh2438024376