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)除塵器主要有(you)兩種結構(gou)形(xing)式(shi),一種是使用耐腐(fu)蝕(shi)導電(dian)材料(可以為導電(dian)性(xing)能優良的的非金(jin)屬(shu)(shu)(shu)材料或(huo)具有(you)耐腐(fu)蝕(shi)特性(xing)的金(jin)屬(shu)(shu)(shu)材料)做集塵極(ji),另一種是用通(tong)過噴水或(huo)溢流(liu)水形(xing)成導電(dian)水膜(mo),利用不(bu)導電(dian)的非金(jin)屬(shu)(shu)(shu)材料做集塵極(ji)。
收塵原理
濕(shi)式(shi)(shi)(shi)(shi)電(dian)除(chu)(chu)(chu)塵(chen)器(qi)和與(yu)干(gan)式(shi)(shi)(shi)(shi)電(dian)除(chu)(chu)(chu)塵(chen)器(qi)的(de)(de)(de)(de)收(shou)塵(chen)原理相同,都是靠高壓電(dian)暈放(fang)電(dian)使得(de)粉(fen)(fen)塵(chen)荷電(dian),荷電(dian)后的(de)(de)(de)(de)粉(fen)(fen)塵(chen)在(zai)電(dian)場力的(de)(de)(de)(de)作用(yong)(yong)下到達(da)集(ji)塵(chen)板/管(guan)。干(gan)式(shi)(shi)(shi)(shi)電(dian)收(shou)塵(chen)器(qi)主(zhu)要處(chu)理含(han)水(shui)很低的(de)(de)(de)(de)干(gan)氣(qi)體,濕(shi)式(shi)(shi)(shi)(shi)電(dian)除(chu)(chu)(chu)塵(chen)器(qi)主(zhu)要處(chu)理含(han)水(shui)較(jiao)高乃至飽和的(de)(de)(de)(de)濕(shi)氣(qi)體。在(zai)對集(ji)塵(chen)板/管(guan)上(shang)捕集(ji)到的(de)(de)(de)(de)粉(fen)(fen)塵(chen)清(qing)(qing)除(chu)(chu)(chu)方式(shi)(shi)(shi)(shi)上(shang)WESP與(yu)DESP有較(jiao)大(da)區別,干(gan)式(shi)(shi)(shi)(shi)電(dian)除(chu)(chu)(chu)塵(chen)器(qi)一般采用(yong)(yong)機械振打或聲波清(qing)(qing)灰等方式(shi)(shi)(shi)(shi)清(qing)(qing)除(chu)(chu)(chu)電(dian)極上(shang)的(de)(de)(de)(de)積灰,而濕(shi)式(shi)(shi)(shi)(shi)電(dian)除(chu)(chu)(chu)塵(chen)器(qi)則(ze)采用(yong)(yong)定(ding)期沖洗的(de)(de)(de)(de)方式(shi)(shi)(shi)(shi),使粉(fen)(fen)塵(chen)隨著沖刷液的(de)(de)(de)(de)流動而清(qing)(qing)除(chu)(chu)(chu)。