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(shi)電(dian)(dian)除(chu)塵(chen)器主(zhu)要有兩種(zhong)結構形(xing)式(shi),一種(zhong)是使用(yong)耐(nai)腐(fu)蝕(shi)導電(dian)(dian)材料(liao)(可以為導電(dian)(dian)性(xing)能優良的的非(fei)金屬(shu)材料(liao)或具有耐(nai)腐(fu)蝕(shi)特性(xing)的金屬(shu)材料(liao))做集塵(chen)極,另一種(zhong)是用(yong)通過噴水(shui)或溢流水(shui)形(xing)成導電(dian)(dian)水(shui)膜,利用(yong)不(bu)導電(dian)(dian)的非(fei)金屬(shu)材料(liao)做集塵(chen)極。
收塵原理
濕(shi)式(shi)(shi)電(dian)除塵(chen)(chen)(chen)(chen)器(qi)和與干式(shi)(shi)電(dian)除塵(chen)(chen)(chen)(chen)器(qi)的(de)(de)(de)收(shou)塵(chen)(chen)(chen)(chen)原理(li)相同(tong),都是靠高壓電(dian)暈放(fang)電(dian)使得粉塵(chen)(chen)(chen)(chen)荷電(dian),荷電(dian)后的(de)(de)(de)粉塵(chen)(chen)(chen)(chen)在電(dian)場(chang)力的(de)(de)(de)作(zuo)用(yong)下到達(da)集塵(chen)(chen)(chen)(chen)板/管。干式(shi)(shi)電(dian)收(shou)塵(chen)(chen)(chen)(chen)器(qi)主要處理(li)含(han)水很(hen)低(di)的(de)(de)(de)干氣(qi)體,濕(shi)式(shi)(shi)電(dian)除塵(chen)(chen)(chen)(chen)器(qi)主要處理(li)含(han)水較(jiao)高乃至飽(bao)和的(de)(de)(de)濕(shi)氣(qi)體。在對集塵(chen)(chen)(chen)(chen)板/管上捕集到的(de)(de)(de)粉塵(chen)(chen)(chen)(chen)清除方(fang)式(shi)(shi)上WESP與DESP有較(jiao)大區別,干式(shi)(shi)電(dian)除塵(chen)(chen)(chen)(chen)器(qi)一般采用(yong)機(ji)械振(zhen)打或聲波清灰等方(fang)式(shi)(shi)清除電(dian)極上的(de)(de)(de)積灰,而(er)濕(shi)式(shi)(shi)電(dian)除塵(chen)(chen)(chen)(chen)器(qi)則(ze)采用(yong)定期(qi)沖(chong)洗的(de)(de)(de)方(fang)式(shi)(shi),使粉塵(chen)(chen)(chen)(chen)隨著沖(chong)刷液的(de)(de)(de)流動而(er)清除。