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(shi)式電(dian)除塵器主(zhu)要有兩種結構形式,一種是使用耐(nai)腐(fu)蝕(shi)導(dao)電(dian)材料(liao)(liao)(可(ke)以為(wei)導(dao)電(dian)性能優良的(de)(de)(de)的(de)(de)(de)非(fei)(fei)金屬材料(liao)(liao)或具有耐(nai)腐(fu)蝕(shi)特性的(de)(de)(de)金屬材料(liao)(liao))做集(ji)塵極(ji),另一種是用通過(guo)噴(pen)水(shui)(shui)或溢流水(shui)(shui)形成導(dao)電(dian)水(shui)(shui)膜,利用不導(dao)電(dian)的(de)(de)(de)非(fei)(fei)金屬材料(liao)(liao)做集(ji)塵極(ji)。
收塵原(yuan)理
濕式(shi)(shi)(shi)電(dian)(dian)(dian)除(chu)(chu)(chu)塵器和與(yu)(yu)干(gan)式(shi)(shi)(shi)電(dian)(dian)(dian)除(chu)(chu)(chu)塵器的(de)(de)(de)收塵原理相同,都是靠(kao)高壓電(dian)(dian)(dian)暈(yun)放電(dian)(dian)(dian)使(shi)得粉(fen)(fen)(fen)塵荷電(dian)(dian)(dian),荷電(dian)(dian)(dian)后的(de)(de)(de)粉(fen)(fen)(fen)塵在(zai)電(dian)(dian)(dian)場力的(de)(de)(de)作(zuo)用下到達(da)集(ji)塵板/管。干(gan)式(shi)(shi)(shi)電(dian)(dian)(dian)收塵器主(zhu)(zhu)要處(chu)理含水很低的(de)(de)(de)干(gan)氣體,濕式(shi)(shi)(shi)電(dian)(dian)(dian)除(chu)(chu)(chu)塵器主(zhu)(zhu)要處(chu)理含水較高乃至飽和的(de)(de)(de)濕氣體。在(zai)對集(ji)塵板/管上捕集(ji)到的(de)(de)(de)粉(fen)(fen)(fen)塵清(qing)除(chu)(chu)(chu)方(fang)(fang)式(shi)(shi)(shi)上WESP與(yu)(yu)DESP有較大區別,干(gan)式(shi)(shi)(shi)電(dian)(dian)(dian)除(chu)(chu)(chu)塵器一般采用機械振打或聲波清(qing)灰(hui)等方(fang)(fang)式(shi)(shi)(shi)清(qing)除(chu)(chu)(chu)電(dian)(dian)(dian)極上的(de)(de)(de)積灰(hui),而濕式(shi)(shi)(shi)電(dian)(dian)(dian)除(chu)(chu)(chu)塵器則(ze)采用定期沖洗的(de)(de)(de)方(fang)(fang)式(shi)(shi)(shi),使(shi)粉(fen)(fen)(fen)塵隨著沖刷液(ye)的(de)(de)(de)流(liu)動(dong)而清(qing)除(chu)(chu)(chu)。