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)除塵(chen)器(qi)主(zhu)要有兩種結構形式(shi),一(yi)種是使用耐(nai)腐蝕導(dao)電(dian)(dian)材(cai)料(liao)(可以為(wei)導(dao)電(dian)(dian)性能優良(liang)的的非金屬材(cai)料(liao)或(huo)具有耐(nai)腐蝕特性的金屬材(cai)料(liao))做(zuo)集(ji)塵(chen)極(ji),另(ling)一(yi)種是用通過噴(pen)水或(huo)溢(yi)流(liu)水形成導(dao)電(dian)(dian)水膜,利用不導(dao)電(dian)(dian)的非金屬材(cai)料(liao)做(zuo)集(ji)塵(chen)極(ji)。
收塵原理
濕式(shi)(shi)電(dian)(dian)除塵(chen)器和與干式(shi)(shi)電(dian)(dian)除塵(chen)器的收(shou)(shou)塵(chen)原(yuan)理相(xiang)同,都是靠高壓(ya)電(dian)(dian)暈放電(dian)(dian)使得(de)粉(fen)塵(chen)荷(he)電(dian)(dian),荷(he)電(dian)(dian)后的粉(fen)塵(chen)在電(dian)(dian)場力的作用(yong)下到達集塵(chen)板/管。干式(shi)(shi)電(dian)(dian)收(shou)(shou)塵(chen)器主要(yao)處(chu)理含水很低的干氣體,濕式(shi)(shi)電(dian)(dian)除塵(chen)器主要(yao)處(chu)理含水較高乃(nai)至飽和的濕氣體。在對集塵(chen)板/管上(shang)(shang)捕集到的粉(fen)塵(chen)清(qing)除方(fang)(fang)式(shi)(shi)上(shang)(shang)WESP與DESP有較大區別,干式(shi)(shi)電(dian)(dian)除塵(chen)器一般(ban)采(cai)(cai)用(yong)機械振打或(huo)聲波清(qing)灰等(deng)方(fang)(fang)式(shi)(shi)清(qing)除電(dian)(dian)極上(shang)(shang)的積灰,而濕式(shi)(shi)電(dian)(dian)除塵(chen)器則采(cai)(cai)用(yong)定期沖(chong)洗(xi)的方(fang)(fang)式(shi)(shi),使粉(fen)塵(chen)隨著沖(chong)刷液的流(liu)動而清(qing)除。