【精品】卧式燃油燃气蒸汽锅炉设计

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1、卧式燃油燃气蒸汽锅炉设计设计指标：1.型号WNS2-1-YCQT2.设汁热效率90%3.炉型：卧式、波纹炉胆、三回程烟管（螺纹管）、湿背式顺流4.烟管公称直径051x3、流速uG（16〜20）m/s5.a=1.03〜1.10pl=1.293kg/Nm3°、1.34畑/曲P(MPa)%0J6.给水温度Q=20°C7.排污率p=5%8.滞水率W二4%9.空气温度5=20°C一、热工计算1、空气平衡计算按设计指标5选取炉膛出口过量空气系数6＜二1.08,按v工业锅炉设备＞第60页表3-1选取各项受热面烟道的漏风系数Aa，进行空气平衡计算，编制空气平衡表，见表1。表1

2、空气平衡表锅炉受热面过量空气系数漏风系数进口G出口a”炉膛1.021.100.082、理论空气量和理论烟气量计算，见表2查＜工业锅炉设备〉第43页表2-14知0号轻柴油Car二85.55%IIar=13.49%Oar二0.66Nar=O.04%Sar=O.25%Aar=O.01%Mar=O%表2理论空气量和理论烟气量计算序项目符号计算或数据來源数值单位号1理论空气量V0VK0.0889(Car+0.375Sar)+0.265Har-0.03330ar二0.0889X(85.55+0.375x0.25)+0.265X13.49-0.0333x0.6611.169

3、m3/kg2二氧化物体积Vro20.01866(Car+0.375Sar)=0.01866x(85.55+0.375x0.25)1.598m3ikg3理论氮气量v°VN20.008Na+0.79V：=0.008x0.04+0.79xll.1698.824m3ikg4理论水蒸气量v°vH200.1HHar+0.0124Mar+0.0161V：=0.111x13.49+0.0124x0+0.0161x11.1691.677m3/kg5理论烟气量V；VRO2+V$2+比20=1.598+8.824+1.66712.089m3ikg3、各受热而烟道中烟气特性计算，见表

4、3表3锅炉各受热面烟道中烟气特性计算序号项H符号计算公式单位炉膛及凝渣管1平均过量空气系数(a+G)m2l」02实际水蒸气量VH2O需2o+O.OI61(q-lMm3/kg1.6953实际烟气暈VyVg+W+VM%-1Mm"!kg13.2164Vr°2体积分数rRO2Vr°2斗Vy0」2095H2O体积分数rH2OVH2O斗«0.12696三原子气体体积分数rRO2+rH2O0.24787烟气质量Gy1+1.306%忠100PjKkg/kg17.0358标准状态下烟气密度Py(Aar、1+1.306^piV":VvI100PJK丿ykg/m31.28904、空

5、气焙和烟气焙计算，见表4其中（C&）CO2・（c&）N2・（c&）H20、（c&）k查V工业锅炉设备＞第81页表3・4获得表4烟气焙温表单位kJ/kg&/°C^RO2需2h()11H20饨=hy+(a-1)出Vro2■(c&)cO24°(c&)n2v°・vH2O(c&)n2Oh4-b0°RO2十nN2u0十口//20V；）（c&）Ka=1.1100271.71147.1253.21671.41474.31818.8200572」2294.2509.83376」2971.03673.2300893.33459.0776.55128.84501.15578.940

6、01233.74650.21049.86933.76053.67539.15001591.65859.11333.28783.97639.69547.96001954.47094.51621.710670.69270.311597.67002334.78347.51923.512605.710945.613700.38002723.09644.62240.514608.112621.015870.29003117.710968.22555.716641.614307.518072.410003518.812300.72892.818712.316038.720

7、316.211003927.913633.13230.020791.017814.622572.512004341.814965.53573.722881.019590.424840.013004757.216333.23932.625023.021366.327159.614005179.117736.24290.027205.323198.029525.115005599.419104.04662.129365.525018.631867.416006021.320507.05034.431562.726839.134246.617006450.02191

8、0.05413.433773.4286