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。
濕式電(dian)(dian)(dian)除塵(chen)器主要有兩種(zhong)結構形式,一種(zhong)是使用(yong)(yong)耐(nai)腐(fu)蝕導電(dian)(dian)(dian)材(cai)料(liao)(可以為導電(dian)(dian)(dian)性能優良的(de)的(de)非(fei)金屬(shu)(shu)材(cai)料(liao)或具有耐(nai)腐(fu)蝕特(te)性的(de)金屬(shu)(shu)材(cai)料(liao))做集塵(chen)極,另(ling)一種(zhong)是用(yong)(yong)通過噴水或溢流水形成導電(dian)(dian)(dian)水膜,利(li)用(yong)(yong)不導電(dian)(dian)(dian)的(de)非(fei)金屬(shu)(shu)材(cai)料(liao)做集塵(chen)極。
收塵原理
濕式(shi)(shi)電(dian)(dian)除(chu)(chu)(chu)(chu)塵(chen)(chen)(chen)器(qi)和與干(gan)(gan)(gan)式(shi)(shi)電(dian)(dian)除(chu)(chu)(chu)(chu)塵(chen)(chen)(chen)器(qi)的(de)(de)(de)收塵(chen)(chen)(chen)原理(li)(li)相同,都是靠(kao)高(gao)壓(ya)電(dian)(dian)暈放電(dian)(dian)使得粉(fen)塵(chen)(chen)(chen)荷電(dian)(dian),荷電(dian)(dian)后的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)在(zai)電(dian)(dian)場力的(de)(de)(de)作(zuo)用(yong)下到達集塵(chen)(chen)(chen)板/管。干(gan)(gan)(gan)式(shi)(shi)電(dian)(dian)收塵(chen)(chen)(chen)器(qi)主要處理(li)(li)含水(shui)很低的(de)(de)(de)干(gan)(gan)(gan)氣體(ti)(ti),濕式(shi)(shi)電(dian)(dian)除(chu)(chu)(chu)(chu)塵(chen)(chen)(chen)器(qi)主要處理(li)(li)含水(shui)較(jiao)高(gao)乃至飽(bao)和的(de)(de)(de)濕氣體(ti)(ti)。在(zai)對(dui)集塵(chen)(chen)(chen)板/管上捕集到的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)清(qing)除(chu)(chu)(chu)(chu)方式(shi)(shi)上WESP與DESP有較(jiao)大區別,干(gan)(gan)(gan)式(shi)(shi)電(dian)(dian)除(chu)(chu)(chu)(chu)塵(chen)(chen)(chen)器(qi)一般采(cai)用(yong)機械(xie)振打或聲波清(qing)灰等(deng)方式(shi)(shi)清(qing)除(chu)(chu)(chu)(chu)電(dian)(dian)極上的(de)(de)(de)積灰,而(er)濕式(shi)(shi)電(dian)(dian)除(chu)(chu)(chu)(chu)塵(chen)(chen)(chen)器(qi)則采(cai)用(yong)定(ding)期沖(chong)洗的(de)(de)(de)方式(shi)(shi),使粉(fen)塵(chen)(chen)(chen)隨著沖(chong)刷液(ye)的(de)(de)(de)流動而(er)清(qing)除(chu)(chu)(chu)(chu)。