文档介绍：《大气污染控制工程》
课程设计
题目:切流旋风除尘器的设计
专业:环境工程
指导教师:
学生姓名:
学号:
2012年10月
切流旋风除尘器设计说明书
摘要
论文主要介绍了旋风除尘器各部分结构尺寸的确定以及旋风除尘器性能的计算。以普通旋风除尘器设计为基础,结合现代此类相关课题的研究方法,设计出符合一定压力损失和除尘效率要求的除尘器,在CAD软件辅助设计的基础上,绘制切流式旋风除尘器外形图,蜗壳尺寸图,蜗壳出口法兰图。本文分以下几部分对以上内容进行了讨论:首先,通过查阅资料计算出切流式旋风除尘器各部分尺寸;其次,绘制出旋风除尘器
蜗壳尺寸图,蜗壳出口法兰图;最后,整理资料,选取与论文相关的英文文献进行翻译完成设计说明书。
关键词:旋风除尘器压力损失除尘效率
The design of efficiently whirler-type dust catcher
Abstract
This paper mainly introduces the determination of the whirler-type dust catcher’s size of structure for every part and the calculation of the performance for the whirler-type dust catcher . It is based on the design of ordinary cyclone bined with modern research methods of such related topics. Then the whirler-type dust catcher which is in accordance with the requirements of pressure drop and the effieieney of dustremoval is drawing of the assembly drawing ,part drawing and dust control system schematic is based on the CAD,a software for aided article is divided into several parts of following to be talked over:at first, calculating the whirler-type dust catcher’s size of every part by searching materials,then drawing the assembly drawing and part drawing of the whirler-type dust last,collating information and selecting a piece of English literature which is related to the papers and translating it plete the synopsis for the design.
Keywords: Whirler-type dust catcher Effieieney of dustremoval Pressure drop
旋风除尘器的设计
原始资料: 有一台锅炉,处理烟气量Q=15000m3/h,排烟温度T=180℃,浓度气体性质、粉尘密度ρp=2000g/m3,粒度分布见表,要求效率>80%, 设计二台串联旋风除尘器。
粒径范围μm
1~5
5~10
10~30
30~60
60~80
>80
平均径dp
3
20
45
70
90
质量频率ΔD%
6
12
22
29
18
13
筛分理论分级效率
1
1旋风除尘器各部分尺寸的确定
根据国家规定的粉尘排放标准、粉尘的性质、允许的阻力和制造条件、经济性合理选择旋风除尘器的形式,选通用型旋风除尘器。
确定进口风速
根据推荐取Vc=18m/s。
确定旋风除尘器的尺寸
(1)进气口面积A的确定
进气口截面一般为长方形,尺寸为a和b,根据处理气量Q和进气速度Vc可得
A=Q/3600Vc=
取尺寸比H/W=,
A=HW
所以H=,W=
实际风速为:Vc=Q/(3600××)=1