目录1设计课程任务书.........................................................11.1设计题目.........................................................11.2设计目的.........................................................11.3设计原始材料.....................................................11.4设计内容和要求...................................................21.5主要参考书目.....................................................32烟气量烟尘和二氧化硫浓度的计算.........................................42.1标准状态下理论空气量.............................................42.2标准状态下理论烟气量.............................................42.3标准状态下实际烟气量.............................................42.4标准状态下烟气含尘浓度...........................................52.5标准状态下烟气中二氧化硫浓度的计算...............................53除尘器的选择...........................................................63.1除尘器应该达到的除尘效率.........................................63.2除尘器的选择.....................................................64确定除尘器、风机和烟囱的位置及管道的布置...............................84.1各装置及管道布置的原则...........................................84.2管径的确定.......................................................85烟囱的设计.............................................................95.1烟囱高度的确定...................................................95.2烟囱直径的计算...................................................95.3烟囱的抽力......................................................106系统阻力计算..........................................................116.1摩擦压力损失....................................................116.2局部压力损失....................................................127系统中烟气温度的变化..................................................157.1烟气在管道中的温度降............................................157.2烟气在烟囱中的温度降............................................158风机和电动机的选择及计算..............................................168.1标准状态下风机风量计算..........................................168.2风机风压计算....................................................178.3电动机功率计算..................................................189通风除尘系统布置图....................................................1910小结及参考文献.......................................................2210.1小结...........................................................2210.2参考文献.......................................................22.....................................................................2.烟气量烟尘和二氧化硫浓度的计算2.1标准状态下理论空气量建立煤燃烧的假定：1、煤中固定氧可用于燃烧；2、煤中硫主要被氧化为SO2；3、不考虑NOX的生成；4、煤中的N在燃烧时转化为N2。标准状态下理论空气量式中YC，YH，YS，YO——分别为煤各元素所含的质量分数。代入YC＝72%，YH＝4%，YS＝1%，YO＝5%，得'aQ=4.76(1.8670.72+5.560.04+0.70.01-0.70.05)=7.323(/)mkg2.2标准状态下理论烟气量（设空气含湿量为12.933(/)mkg）式中'aQ——标准状态下理论空气量，3(/)mkg；YW——煤中水分所占质量分数，％；YN——N元素在所占质量分数，％；代入'aQ=7.323(/)mkg,YW=6%,YN=1%,得'SQ＝1.867(0.72+0.3750.01)+11.20.04+1.240.06+(0.016+0.79)7.32+0.80.01=7.783(/)mkg2.3标准状态下实际烟气量式中——空气过剩系数,取1.4注意：标准状态下烟气流量Q以3/mh计，因此，SQQ设计耗煤量代入'SQ＝7.783(/)m...
