DOC《南京林业大学》

南京林业大学 本科毕业设计(论文) 题目: 35t/h循环硫化床锅炉除尘装置规划与设计 学院: 南方学院 专业: 热能与动力工程 学号: n070403216 学生姓名: 王金龙 指导教师: 王志和 职称: 副教授 二O一一年五月二十日 摘要 当前,随着人们对环境保护问题的日益关注,环境保护的标准也是日益提高,也就显得越发严格.

与此同时,由于锅炉(尤其是燃煤锅炉)在人们生活中的供电,供汽,采暖等各方面发挥愈来愈重要的作用.因此,如何能够高效经济的解决燃煤锅炉的环保问题也就为人们更多的关注,锅炉产生的硫氧化物,碳氧化物,氮氧化物,碳氢化合物,以及废水,废渣,烟尘和噪声都会对环境和人类生活造成不良的影响.其中,烟尘颗粒对大气的污染是一个主要方面.而对于一台位于市区的35t/h的燃煤锅炉,应选择合适的高效除尘系统,选择怎样的除尘系统,以及合适的设备型号,才能保证高效与经济性兼顾,将是本文研究的重点. 本文在静电除尘与袋式除尘之间选用了袋式除尘作为本锅炉的除尘系统,并设计了与此相关的烟囱及滤料等.此外,合理布置锅炉房及管道,并对有关可改进的地方加以改进,以保证经济与高效兼顾,本文也将加以尝试. 关键词: 锅炉 除尘 烟气量 袋式除尘 Summary At present, as people become increasingly concerned about environmental issues, environmental protection standards are also increasing, it becomes more stringent. At the same time, the boiler (especially coal-fired boilers), power in people'

s lives, gas, heating and other increasingly important role to play. Therefore, how to efficiently solve the economy'

s environmental problems will be coal-fired boilers more concern for the people, the boiler produces sulfur oxides, carbon oxides, nitrogen oxides, hydrocarbons, and the waste water, sludge, dust and noise on the environment and adversely affect human life. Among them, the soot particles of atmospheric pollution is a major aspect. And in the urban area for a 35t / h coal-fired boilers, should select the appropriate and efficient dust removal system, choose what kind of dust removal system, and the appropriate device models in order to ensure both efficiency and economy, will be the focus of this study . In this paper, between the electrostatic precipitator and bag filter dust bag selected as the boiler dust removal system, and designed with the chimney and the associated media and so on. In addition, the rational arrangement of boiler room and piping, and related areas of improvement to be improved in order to ensure economy and efficiency into account, this paper will try it out. Key words: boiler flue gas volume of the dust bag dust 目录 前言

1 1 燃煤锅炉与环境保护

1 1.1环境保护

1 1.2大气污染物的危害

1 1.3燃煤锅炉产生的有害物

2 1.4燃煤锅炉与环保的关系

2 2 除尘设备及原理

2 2.1 重力除尘

3 2.2 惯性除尘

3 2.3旋风分离器

5 2.4 布袋除尘技术

5 2.5 静电除尘

6 2.6 水膜除尘器

7 3 相关数据的确定

9 3.1 q3的选取

9 3.2 q4的选取

10 3.3 烟尘容许排放浓度的确定

11 3.3.1 主题内容与适用范围

11 3.3.2 引用标准:

12 3.3.3 定义

12 3.3.4 技术内容

12 3.3.5 监测

14 3.3.6? 标准实施

14 4 计算空气量和烟气量

16 4.1 空气量的计算

16 4.2 烟气量的计算

17 5 规划选择除尘系统

18 5.1 性能对比分析