影响除尘器布袋使用因素有哪些?

2025-03-16 06:21:19
推荐回答(4个)
回答1:

一、酸性气体的腐蚀。当燃烧高硫煤或者有未经脱硫处理的烟气时,其中的硫氧化物、氮氧化物浓度会很高,但玻纤或PTFE材质滤料的除尘布袋外,其他化学合成纤维料均会被腐蚀损坏,这样除尘布袋寿命就会缩短。
二、烟气的高温度。袋式除尘器主要应用在工业锅炉、流化床锅炉、窑炉及燃煤电站锅炉的烟气除尘。此类烟气温度往往都比较高,气体进入除尘器时温度一般在90℃~280℃左右。所以普通的化学纤维在这种温度下性能会受影响,那么袋式除尘器的滤料必须采用耐高温的纤维材料。
三、烟气中的水分。在高温状态下运行工作,当烟气中粉尘含水量超过25%以上时,粉尘便会产生易粘袋、堵袋的现象,若材料的抗水解性能不高,水解作用也会使滤料受损。
四、烟气的氧化作用。烟气对除尘布袋有一定的氧化作用,因为空气中氧气占21%,所以除尘布袋在工作时会深受其害,若想避免这种情况,就要选择些具有抗氧化作用滤料的除尘布袋,例如PTFE聚四氟乙烯材料制成的除尘布袋。

回答2:

通风量的变化、通风温度的变化。通风中含尘浓度的变化。

回答3:

烟尘的性质、烟尘温度、湿度等因素都可影响除尘器布袋除尘效率

回答4:

(1)滤袋的选择(2)温度的控制(3)风机选用(4)机械除尘比人工除尘方便、干净,但机械除尘费用高,现大多采用脉冲除尘法(5)漏风与阻力(6)集尘罩应尽量接近炉头,使粉尘更容易进入罩内,增加集尘量,减少无组织排放污染。(7)设备维护(8)气流速度

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