濕式電除塵器是一種用來處理含微量粉塵和微顆粒的新除塵設備,主要用來除去含濕氣體中的塵、酸霧、水滴、氣溶膠、臭味、PM2.5等有害物質,是治理大氣粉塵污染的理想設備。
濕式電除塵器通常簡稱WESP,與干式電除塵器的除塵基本原理相同,要經歷荷電、收集和清灰三個階段。
濕(shi)式電(dian)(dian)除塵(chen)器主(zhu)要有兩種結構形(xing)式,一種是使用(yong)(yong)耐腐(fu)蝕導(dao)電(dian)(dian)材料(liao)(liao)(可以為導(dao)電(dian)(dian)性能優良的(de)的(de)非金屬(shu)材料(liao)(liao)或具有耐腐(fu)蝕特性的(de)金屬(shu)材料(liao)(liao))做(zuo)集(ji)塵(chen)極(ji),另一種是用(yong)(yong)通過噴水(shui)或溢流水(shui)形(xing)成導(dao)電(dian)(dian)水(shui)膜(mo),利(li)用(yong)(yong)不(bu)導(dao)電(dian)(dian)的(de)非金屬(shu)材料(liao)(liao)做(zuo)集(ji)塵(chen)極(ji)。
收塵(chen)原(yuan)理
濕(shi)(shi)式(shi)電(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器(qi)和(he)與干式(shi)電(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器(qi)的(de)(de)(de)收塵(chen)(chen)(chen)(chen)(chen)原理(li)相同,都是靠(kao)高(gao)(gao)壓(ya)電(dian)暈放電(dian)使得粉塵(chen)(chen)(chen)(chen)(chen)荷(he)電(dian),荷(he)電(dian)后的(de)(de)(de)粉塵(chen)(chen)(chen)(chen)(chen)在(zai)電(dian)場(chang)力的(de)(de)(de)作用下到(dao)達集塵(chen)(chen)(chen)(chen)(chen)板/管(guan)。干式(shi)電(dian)收塵(chen)(chen)(chen)(chen)(chen)器(qi)主(zhu)要(yao)處理(li)含水很低的(de)(de)(de)干氣(qi)體(ti),濕(shi)(shi)式(shi)電(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器(qi)主(zhu)要(yao)處理(li)含水較高(gao)(gao)乃至飽(bao)和(he)的(de)(de)(de)濕(shi)(shi)氣(qi)體(ti)。在(zai)對(dui)集塵(chen)(chen)(chen)(chen)(chen)板/管(guan)上(shang)捕集到(dao)的(de)(de)(de)粉塵(chen)(chen)(chen)(chen)(chen)清(qing)(qing)除(chu)(chu)(chu)方(fang)式(shi)上(shang)WESP與DESP有較大(da)區別,干式(shi)電(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器(qi)一般(ban)采(cai)用機械振(zhen)打或(huo)聲(sheng)波(bo)清(qing)(qing)灰等方(fang)式(shi)清(qing)(qing)除(chu)(chu)(chu)電(dian)極上(shang)的(de)(de)(de)積灰,而濕(shi)(shi)式(shi)電(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器(qi)則采(cai)用定期沖(chong)洗的(de)(de)(de)方(fang)式(shi),使粉塵(chen)(chen)(chen)(chen)(chen)隨著沖(chong)刷(shua)液(ye)的(de)(de)(de)流動而清(qing)(qing)除(chu)(chu)(chu)。