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)除塵(chen)(chen)器(qi)主要(yao)有(you)兩種(zhong)結構形式(shi),一(yi)種(zhong)是使用(yong)(yong)耐腐蝕導電(dian)材料(liao)(可(ke)以為導電(dian)性(xing)能優良的(de)的(de)非金屬材料(liao)或具有(you)耐腐蝕特性(xing)的(de)金屬材料(liao))做集塵(chen)(chen)極,另一(yi)種(zhong)是用(yong)(yong)通過噴水或溢(yi)流水形成導電(dian)水膜,利用(yong)(yong)不導電(dian)的(de)非金屬材料(liao)做集塵(chen)(chen)極。
收(shou)塵原(yuan)理(li)
濕(shi)式(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)器(qi)和(he)與(yu)干式(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)器(qi)的(de)(de)收塵(chen)(chen)(chen)原(yuan)理相同,都是靠(kao)高壓(ya)電(dian)(dian)暈放電(dian)(dian)使得(de)粉塵(chen)(chen)(chen)荷電(dian)(dian),荷電(dian)(dian)后(hou)的(de)(de)粉塵(chen)(chen)(chen)在(zai)電(dian)(dian)場(chang)力的(de)(de)作用下到達集(ji)(ji)塵(chen)(chen)(chen)板(ban)/管(guan)。干式(shi)電(dian)(dian)收塵(chen)(chen)(chen)器(qi)主(zhu)要(yao)處(chu)理含水很低的(de)(de)干氣體(ti),濕(shi)式(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)器(qi)主(zhu)要(yao)處(chu)理含水較高乃至飽和(he)的(de)(de)濕(shi)氣體(ti)。在(zai)對集(ji)(ji)塵(chen)(chen)(chen)板(ban)/管(guan)上(shang)捕集(ji)(ji)到的(de)(de)粉塵(chen)(chen)(chen)清除(chu)(chu)方式(shi)上(shang)WESP與(yu)DESP有較大區別(bie),干式(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)器(qi)一般采用機械振打(da)或(huo)聲波(bo)清灰(hui)等(deng)方式(shi)清除(chu)(chu)電(dian)(dian)極上(shang)的(de)(de)積灰(hui),而濕(shi)式(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)器(qi)則采用定(ding)期沖洗(xi)的(de)(de)方式(shi),使粉塵(chen)(chen)(chen)隨著沖刷液的(de)(de)流(liu)動而清除(chu)(chu)。