布袋除尘器滤袋的预涂层该怎么操作?

2025-03-16 17:56:38
推荐回答(1个)
回答1:

布袋除尘器滤袋的预涂层操作方法说明:
  1、布袋除尘器滤袋的预涂层应在燃烧或生产工艺开始之前,先切断并停止清灰系统,打开除尘器的进风口阀门(包括各个滤袋室的进风口及出风口阀门)。
  2、启动风机逐步增加除尘器的气流量,直至达到设计风量的70%左右,并记录每个室的除尘器滤袋内外阻力。
  3、在除尘器总进风管道的开口处(通常是烟气测试口)投入干燥无油的预涂粉。灰粉目数要求小于200目,水分含量小于1%。按每平米过滤面积350-450g的灰粉投入进去。
  4、开始投粉前,确定引风机风量在70%以上,务必是的旁路阀处于关闭状态,提升阀处于在线状态。风机负荷运转直至预涂灰结束约20分钟,以确保更为均匀顺畅地分布在各个灰斗里面。
  5、在预涂灰的时候,各个室里面上升的压差反映,例如,起初压差假如在100Pa,预涂灰后最少要增加到350~400Pa,也就是说必须增加250~300Pa,如没有,预示着预涂灰失败,需重新进行。
  6、在预涂灰工作完成的情况下,停下风机安排人员进入除尘器净气室检查,如果有发现花板孔或花板与箱体电焊处有出现漏灰现象,要检查滤袋袋头与花板之间的密封性是否严密,若不严密,需进行调整。
  7、做完布袋除尘器滤袋预涂灰后,若没有问题,系统运行到正常设计参数,随后开启除尘器的清灰系统,除尘器进入正常操作运行。

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