布袋除尘器设计

摘要除尘设备已被划分为先进环保产业，对于大气污染防治有极大的推动作用，在国家节能环保计划中占有重要地位，布袋除尘器能使粉尘的含尘浓度降低到10mg/Nm3以下，满足国家超低排放标准的要求，考量国家政策、当前经济效益以及未来发展，我们可以看到，布袋除尘器能够解决工业生产中的空气污染问题，因此布袋除尘器的研究与优化设计具有很强的现实意义。选取过滤风速时，需要考虑到成本因素和运转寿命因素，必须合理考虑到两者的平衡，避免成本过高或者磨损过重导致的滤袋寿命过短，本设计选择过滤风速为lm/min:滤袋尺寸的设计也需要根据设计实际工程情况及H/T327-2006进行计算分析，厂房占地面积、布袋长径比都会对除尘器尺寸进行限定，进而对布袋尺寸进行限定，同时为了方便布置，合理考虑布袋尺寸及设计要求，计算得到单个除尘室含有80个滤袋，本设计共10个除尘室，共计有800个滤袋；考虑到烟气为锅炉尾气，气温较高，在选取滤料时，选择PPS材质，同时为了达到更好的透气性和除尘效率，选择更有优势的针刺毡，设计滤袋的框架时，根据BT5917一2006标准选择支撑环间距和纵筋数量：多孔板的布置及尺寸应严格按照布带数量进行合理设计，同时其加工应满足JBT85341997的要求；除尘室总体几何尺寸要考虑到上箱体、下箱体、反吹管路、灰斗高度、粉尘输送设备高度、顶部栏杆等多方面因素，根据已知数据及合理估计，除尘器总高度应在16.5m左右。除了以上的基本计算，除尘器还要为钢壳体铺设保温层，以避免寒冷天气影响正常运转，根据传热分析计算，本设计选择150mm岩棉保温；烟囱的设计也需要考虑到，根据使用条件，烟囱高度，地质条件，地震烈度，材料供应和施工条件等因素，本设计选用砖筒壁，直径约3，几何高度80m,有效高度约150m。关键词：分室三态反吹；布袋除尘器；PPS针刺毡AbstractDust removal equipment has been classified as an advancedenvironmental protection industry,for air pollution prevention and controlhas a great role in promoting,in the national energy conservation andenvironmental protection plan occupies an important position,bag dustcollector can reduce the dust concentration of dust to 10mg/Nm3 below,tomeet the requirements of the national ultra-low emission standards,considering national policies,current economic benefits and futuredevelopment,we can see,The bag filter can solve the air pollution problemin industrial production,so the research and optimal design of the bag filterhas a strong practical significance.When selecting the filter wind speed,it is necessary to take into accountthe cost factor and the operating life factor,and the balance between the twomust be reasonably considered to avoid the filter bag life is too short causedby high cost or excessive wear.The filter wind speed is selected for 1m/minin this design.The design of the filter bag size also needs to be calculatedand analyzed according to the actual engineering situation of the design andHJ/T 327-2006.The plant area and the length-diameter ratio of the bag willlimit the size of the dust collector,and then the size of the bag will belimited.At the same time,in order to facilitate the layout,reasonable