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。
濕式電除塵(chen)器主要有(you)兩(liang)種結構形(xing)式,一種是使(shi)用耐腐蝕(shi)導電材料(liao)(liao)(可以為導電性能(neng)優良的(de)的(de)非(fei)金屬(shu)材料(liao)(liao)或具有(you)耐腐蝕(shi)特性的(de)金屬(shu)材料(liao)(liao))做(zuo)(zuo)集塵(chen)極(ji),另一種是用通過噴(pen)水(shui)或溢流水(shui)形(xing)成導電水(shui)膜,利用不導電的(de)非(fei)金屬(shu)材料(liao)(liao)做(zuo)(zuo)集塵(chen)極(ji)。
收塵原理(li)
濕(shi)式(shi)(shi)(shi)(shi)電(dian)(dian)(dian)除(chu)塵(chen)器(qi)(qi)和與干(gan)式(shi)(shi)(shi)(shi)電(dian)(dian)(dian)除(chu)塵(chen)器(qi)(qi)的(de)(de)(de)(de)收(shou)塵(chen)原理相同,都是靠(kao)高壓(ya)電(dian)(dian)(dian)暈放(fang)電(dian)(dian)(dian)使得粉塵(chen)荷電(dian)(dian)(dian),荷電(dian)(dian)(dian)后的(de)(de)(de)(de)粉塵(chen)在電(dian)(dian)(dian)場(chang)力的(de)(de)(de)(de)作用(yong)下到達集塵(chen)板/管。干(gan)式(shi)(shi)(shi)(shi)電(dian)(dian)(dian)收(shou)塵(chen)器(qi)(qi)主要(yao)處(chu)理含(han)水很低(di)的(de)(de)(de)(de)干(gan)氣體,濕(shi)式(shi)(shi)(shi)(shi)電(dian)(dian)(dian)除(chu)塵(chen)器(qi)(qi)主要(yao)處(chu)理含(han)水較高乃至飽和的(de)(de)(de)(de)濕(shi)氣體。在對(dui)集塵(chen)板/管上捕集到的(de)(de)(de)(de)粉塵(chen)清除(chu)方式(shi)(shi)(shi)(shi)上WESP與DESP有較大區(qu)別(bie),干(gan)式(shi)(shi)(shi)(shi)電(dian)(dian)(dian)除(chu)塵(chen)器(qi)(qi)一(yi)般采用(yong)機械振打或聲波清灰等(deng)方式(shi)(shi)(shi)(shi)清除(chu)電(dian)(dian)(dian)極(ji)上的(de)(de)(de)(de)積灰,而濕(shi)式(shi)(shi)(shi)(shi)電(dian)(dian)(dian)除(chu)塵(chen)器(qi)(qi)則采用(yong)定期(qi)沖(chong)(chong)洗的(de)(de)(de)(de)方式(shi)(shi)(shi)(shi),使粉塵(chen)隨著(zhu)沖(chong)(chong)刷液的(de)(de)(de)(de)流(liu)動而清除(chu)。