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)除塵(chen)器主要有兩種(zhong)(zhong)結構形式,一(yi)種(zhong)(zhong)是使(shi)用(yong)耐腐蝕(shi)導(dao)電(dian)材(cai)料(liao)(liao)(可以為導(dao)電(dian)性能優良的的非金屬材(cai)料(liao)(liao)或具有耐腐蝕(shi)特性的金屬材(cai)料(liao)(liao))做集塵(chen)極,另一(yi)種(zhong)(zhong)是用(yong)通過(guo)噴水或溢流水形成導(dao)電(dian)水膜,利(li)用(yong)不導(dao)電(dian)的非金屬材(cai)料(liao)(liao)做集塵(chen)極。
收塵原(yuan)理
濕(shi)式(shi)(shi)(shi)電(dian)除(chu)塵(chen)(chen)(chen)器和與干(gan)(gan)式(shi)(shi)(shi)電(dian)除(chu)塵(chen)(chen)(chen)器的(de)(de)收(shou)塵(chen)(chen)(chen)原理相同,都是(shi)靠高壓(ya)電(dian)暈(yun)放電(dian)使得粉塵(chen)(chen)(chen)荷電(dian),荷電(dian)后(hou)的(de)(de)粉塵(chen)(chen)(chen)在電(dian)場力的(de)(de)作用下(xia)到達集塵(chen)(chen)(chen)板(ban)/管(guan)。干(gan)(gan)式(shi)(shi)(shi)電(dian)收(shou)塵(chen)(chen)(chen)器主(zhu)(zhu)要處理含(han)水(shui)很低(di)的(de)(de)干(gan)(gan)氣(qi)體,濕(shi)式(shi)(shi)(shi)電(dian)除(chu)塵(chen)(chen)(chen)器主(zhu)(zhu)要處理含(han)水(shui)較(jiao)高乃至(zhi)飽和的(de)(de)濕(shi)氣(qi)體。在對(dui)集塵(chen)(chen)(chen)板(ban)/管(guan)上捕集到的(de)(de)粉塵(chen)(chen)(chen)清(qing)除(chu)方(fang)式(shi)(shi)(shi)上WESP與DESP有較(jiao)大區別,干(gan)(gan)式(shi)(shi)(shi)電(dian)除(chu)塵(chen)(chen)(chen)器一般采用機械振打或聲(sheng)波清(qing)灰等方(fang)式(shi)(shi)(shi)清(qing)除(chu)電(dian)極上的(de)(de)積灰,而濕(shi)式(shi)(shi)(shi)電(dian)除(chu)塵(chen)(chen)(chen)器則采用定(ding)期沖洗的(de)(de)方(fang)式(shi)(shi)(shi),使粉塵(chen)(chen)(chen)隨著沖刷液(ye)的(de)(de)流(liu)動而清(qing)除(chu)。