文档介绍：摘要
在冶金过程中,产生大量的废气,这些废气的含尘浓度高,烟尘的危害性大,对环境造成严重的污染。同时,这些烟尘又有一定的回收和利用价值。因此,治理这些烟尘具有显著的经济效益和社会效益。
本设计针对冶炼的生产及场地等的具体情况,来设计布袋除尘器,并且使其排污情况达到国家相关的排放标准要求。而且,又要尽量满足投资少、运转费用低、操作方便、维护简单的要求。
目前,国内外除尘设备的种类和型号较多,通过对它们的原理的分析以及性能的比较等,根据实际情况, 选出了对冶金炉废气控制的最佳方案。选用袋式除尘器并进行了设计计算确定了布袋的型号、尺寸、根数,对除尘器外部箱体、支架和灰斗等钢结构部件也进行了设计,并计算了其重量和面积和列出材料的数量表。然后对除尘系统进行长效防腐设计,根据现场,合理对各个部件进行了布局。
本设计选用的负压吸灰的袋式除尘器在原有除尘器的基础上,进行了一系列的改进。该除尘器节约成本, 扩大了除尘的效率,同时,冷却塔的设计,降低了含尘气体的温度,保证了除尘器内布袋使用寿命,并合理地利用了空间,对除尘和清灰达到了全自动化控制。
在本设计中,不但完成了对除尘系统总体的设计,而且强化细节,做到了所设计的除尘系统可以直接进行加工、安装、调试并投入使用。。
关键词: 大气污染;袋式除尘器;钢结构;长效防腐
Abstract
In the process of metallurgy, a large amount of exhaust gas will be produced, which contains a high concentration of ash or dust. This kind of ash is very harmful and will pollute the environment. At the same time, the ash also has a value in reclamation and reuse. Therefore, it has a significant economic and social benefit to treat with it.
In this dpaper, according to the idiographic case of the producing and place etc. of smelting, it designs hop-pocket dust catcher and makes waste-excreting up to the relevant national standard criterion. What’s more, it should meet the requests of less investment, low running cost, conveniency for operation and easiness for maintenance as necessary as possible.
At present, there are relatively too many sorts and models of dust catcher at home and abroad, through the analyse of their theories parison of capability, according to the practical condition, we select the best scheme in calcium carbide furnace exhaust gas controlling. Having the hop-pocket dust catcher selected and the design calculation worked out, we fixed the model, size and root-number of the bag, and we have also designed the steel structure of the dust catcher’s several parts such as the exterior box, bracket and the ash- funnel etc. moreover, with its weight and area calculated. Then, towards the dust-removing system, we carried out the long-effective antisepticisin