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(zhu)要有(you)兩種(zhong)結構形式,一(yi)種(zhong)是使(shi)用(yong)耐腐蝕導電(dian)(dian)(dian)材料(可以(yi)為(wei)導電(dian)(dian)(dian)性能優良的(de)的(de)非金屬(shu)材料或具有(you)耐腐蝕特性的(de)金屬(shu)材料)做集塵(chen)極(ji),另(ling)一(yi)種(zhong)是用(yong)通過噴水或溢流(liu)水形成(cheng)導電(dian)(dian)(dian)水膜,利用(yong)不(bu)導電(dian)(dian)(dian)的(de)非金屬(shu)材料做集塵(chen)極(ji)。
收塵原(yuan)理
濕式(shi)電(dian)(dian)(dian)除(chu)塵(chen)器(qi)和(he)與(yu)干式(shi)電(dian)(dian)(dian)除(chu)塵(chen)器(qi)的(de)(de)收塵(chen)原(yuan)理相同(tong),都是靠(kao)高(gao)壓電(dian)(dian)(dian)暈放(fang)電(dian)(dian)(dian)使得粉(fen)塵(chen)荷電(dian)(dian)(dian),荷電(dian)(dian)(dian)后(hou)的(de)(de)粉(fen)塵(chen)在電(dian)(dian)(dian)場(chang)力的(de)(de)作用下到達集(ji)(ji)塵(chen)板/管。干式(shi)電(dian)(dian)(dian)收塵(chen)器(qi)主(zhu)要(yao)處理含水(shui)很(hen)低的(de)(de)干氣體,濕式(shi)電(dian)(dian)(dian)除(chu)塵(chen)器(qi)主(zhu)要(yao)處理含水(shui)較(jiao)高(gao)乃至飽和(he)的(de)(de)濕氣體。在對集(ji)(ji)塵(chen)板/管上(shang)捕集(ji)(ji)到的(de)(de)粉(fen)塵(chen)清除(chu)方式(shi)上(shang)WESP與(yu)DESP有較(jiao)大區(qu)別(bie),干式(shi)電(dian)(dian)(dian)除(chu)塵(chen)器(qi)一般采用機械振打或聲波清灰等方式(shi)清除(chu)電(dian)(dian)(dian)極上(shang)的(de)(de)積灰,而濕式(shi)電(dian)(dian)(dian)除(chu)塵(chen)器(qi)則(ze)采用定期(qi)沖(chong)洗的(de)(de)方式(shi),使粉(fen)塵(chen)隨著(zhu)沖(chong)刷液的(de)(de)流(liu)動而清除(chu)。