机械5

DN1000泡沫除尘器设计 摘要 泡沫除尘器是通过气体与介质充分接触达到除尘目的，形成的泡沫能完全覆盖尘源，有很大的接触面积，随着气泡的不断的合并、破裂、再重新形成，提供了尘粒附着到液膜上的条件，从而阻止粉尘的扩散。本次设计的是板式塔中的筛板塔，因为它的效率和处理能力比较高。容器支座采用与筒体的内径和厚度相同的圆筒形裙座，它比圆锥形裙座制造更方便。根据塔内径的大小，选用单溢流分块式塔盘，方便工作人员进入塔内安装和检修。为了确保接口的密封性，采用法兰连接。在对泡沫除尘器的筒体、塔盘、容器支座及塔外部附件装置的材料选择和尺寸设计时，不仅要满足工艺设计，而且得考虑自然因素的影响，来进行塔体强度计算和截面压力的稳定校核。提出了对加工工艺的要求，装配过程的注意事项和安全防腐措施。利用绘图软件绘制出符合设计要求的泡沫除尘器图纸，并给出技术要求。在泡沫除尘器的结构设计过程中，必须以设计手册为标准进行设计，使设计符合相关标准，同时必须满足生产需求和安全生产的要求。 关键词：筛板塔；溢流堰；塔盘；法兰 ABSTRACT The foam precipitator is achieved by fully co
ntacti
ng the gas a
nd the medium to achieve the purpose of dust removal. The foam formed ca
n completely cover the dust source a
nd has a large co
ntact area. With the co
nti
nuous mergi
ng, breaki
ng a
nd re formi
ng of the bubbles, the dust particles ca
n be attached to the liquid membra
ne, thus preve
nti
ng the dust from spreadi
ng. This desig
n is the sieve tray tower i
n the tray tower, because of its high efficie
ncy a
nd processi
ng capacity. The vessel support adopts a cyli
ndrical skirt with the same i
n
ner diameter a
nd thick
ness as the cyli
nder body, which is more co
nve
nie
nt to ma
nufacture tha
n the co
nical skirt. Accordi
ng to the i
n
ner diameter of the tower, si
ngle overflow block tray is selected to facilitate staff to e
nter the tower for i
nstallatio
n a
nd mai
nte
na
nce. I
n order to e
nsure the seali
ng of the i
nterface, fla
nge co
n
nectio
n is adopted. I
n the selectio
n a
nd size desig
n of the cartridge, tray, co
ntai
ner support a
nd exter
nal accessories of the foam precipitator,
not o
nly the tech
nological desig
n should be satisfied, but also the
natural factors should be take
n i
nto accou
nt to calculate the stre
ngth of the tower a
nd check the stability of the sectio
n pressure. The requireme
nts of processi
ng tech
nology, precautio
ns i
n assembly process a
nd safety a
nd a
nticorrosio
n are put forward. Drawi
ng software is used to draw out the drawi
ngs of foam precipitator that meet the desig
n requireme
nts, a
nd the tech
nical requireme
nts are give
n. I
n the process of the structure desig
n of the foam precipitator, it is
necessary to carry out the sta
ndardized desig
n with the desig
n ma
nual as the sta
ndard, so that the desig
n meets the releva
nt sta
ndards, a
nd at the same time, the productio
n requireme
nts a
nd safety productio
n requireme
nts must be satisfied. Key words : sieve tray tower;overflow weir; tray; fla
nge 目录 1绪论1 1.1引言1 1.2泡沫除尘器的介绍2 1.3泡沫除尘器的特点3 1.4设计方案3 2泡沫除尘器的主体结构设计4 2.1设计内容4 2.2板式塔4 2.3容器的选择与设计5 2.4塔高的计算6 2.5裙座的设计7 3板式塔零部件结构设计10 3.1塔盘型式及设计10 3.2筛孔塔盘13 3.3降液管13 3.4受液盘14 3.5溢流堰15 3.6除沫器15 4辅助装置及附件16 4.1工艺接管16 4.2人孔与手孔17 4.3法兰连接17 4.4吊柱18 4.5操作平台和梯子18 5设备的强度计算与校核19 5.1设计参数19 5.2设备质量载荷计算19 5.3风载荷与风弯矩计算20 5.4地震弯矩计算22 5.5各种载荷引起的轴向应力22 5.6塔体和裙座强度和稳定校核23 5.7塔体水压试验的应力校核24 6加工工艺和装配程序及安全防腐25 6.1加工工艺25 6.2装配程序25 6.3安全防腐26 参考文献27 致谢28 附录29