燃煤锅炉烟气除尘系统的设计

[摘要]：目前，污染已经变成了一个全球性的问题，主要有温室效应、臭氧层破坏和酸雨。而大气污染可以说主要是人类活动造成的，大气污染对人体的舒适、健康的危害包括对人体的正常生活和生理的影响。目前，大气污染已经直接影响到人们的身体健康。该燃煤电厂的大气污染物主要是颗粒污染物，而且排放量比较大所以必须通过有效的措施来进行处理，以免污染空气，影响人们的健康生活。[关键字]：大气污染；袋式除尘器；烟囱；阻力损失

[abstract] :at present, the air pollution has become a global problem, basically have the greenhouse effect, the ozone depletion and acid rain. And air pollution can say is mainly caused by human activity, air pollution on human the comfortable, healthy harm to human body including the normal life and physiological effect. At present, the atmospheric pollution has directly affect people's physical health. The coal fired power plant the atmospheric pollutants is main pollutant particles, and emissions is bigger so must through effective measures to deal with, so as not to pollute the air, affect people's health life.

[key words] :air pollution; Bag filter; The chimney; Resistance

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————————目录———————

第一章前言..................................................... - 2 -第二章设计依据................................................. - 3 -

2.1课程设计的目的内容及深度................................ - 3 -

2.2课程设计任务书.......................................... - 3 -第三章除尘器................................................... - 5 -

3.1概述.................................................... - 5 -

3.2除尘器的工作原理及特点.................................. - 6 -

3.2.1 除尘器的工作原理.................................. - 6 -

3.2.2旋风除尘器的结构及特点............................ - 7 -

3.3影响旋风除尘器性能的主要因素............................ - 8 -

3.3.1几何尺寸因素...................................... - 8 -

3.3.2操作条件因素..................................... - 10 -

3.3.3固体粉尘的物理性质因素........................... - 11 -第四章设计方案................................................ - 12 -

4.1燃煤锅炉排烟量及烟尘和二氧化硫浓度的计算............... - 12 -

4.11标准状态下理论空气量.............................. - 12 -

4.12标准状态下理论烟气量.............................. - 12 -

4.13标准状态下实际烟气量.............................. - 12 -

4.14烟气含尘浓度...................................... - 13 -

4.15标准状态下烟气中二氧化硫浓度的计算................ - 13 -

4.2除尘器的选择........................................... - 14 -

4.21除尘效率.......................................... - 14 -

4.22除尘器的选择...................................... - 14 -

4.3确定除尘器，风机，烟囱的位置及管道布置................. - 15 -

4.31各装置及管道布置的原则............................ - 15 -

4.32管径的确定........................................ - 16 -

4.4烟囱的设计............................................. - 16 -

4.41烟囱高度的确定.................................... - 16 -

4.42烟囱直径的计算.................................... - 17 -

4.43烟囱的抽力........................................ - 18 -

4.5系统阻力的计算......................................... - 18 -

4.51摩擦压力损失...................................... - 18 -

4.52局部压力损失...................................... - 20 -第五章附图.................................................... - 23 -

总结........................................................... - 24 -参考文献....................................................... - 25 -致谢........................................................... - 26 -