旋风除尘器设计说明书 黄晓东.doc

《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:杨伟华学生姓名:黄晓东学号: 09234045 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 p erformanc e for the whirler-type dust catcher . It is based on the design ofo rdinary cyclone and c ombined 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 s oftware for aided article is divided into several parts of following tobe talked over :at first, calculat ing the whirler-type dust catcher ’s size of every part by searching materials ,t hen draw ing the assembly drawing and part drawing of the whirler-type dust catcher .at last,collat ing information and select ing a piece of English literature which is related to the papers and translat ing it plete the synopsis for the design. K eywords: Whirler-type dust catcher E ffieieney of dustremoval Pressure drop 3 旋风除尘器的设计原始资料: 有一台锅炉, 处理烟气量 Q= 15000m 3 /h, 排烟温度 T= 180 ℃, 浓度气体性质、粉尘密度ρ p= 2000g/m 3, 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μ m 1~5 5~10 10~30 30~60 60~80 > 80 平均径 20457090 质量频率Δ D% 61222291813 筛分理论分级效率 1 1 旋风除尘器各部分尺寸的确定 形式的选择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=0 .23 m 2 取尺寸比 H/W= , A=HW 所以 H=0. 76m, W=0. 30m 实际风速为: Vc=Q/ ( 3600 × 0