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(chu)塵器主要有(you)兩種(zhong)(zhong)結(jie)構形(xing)式,一種(zhong)(zhong)是(shi)使用(yong)耐(nai)腐蝕導(dao)電(dian)材料(liao)(可以為(wei)導(dao)電(dian)性能優良的(de)的(de)非金屬材料(liao)或(huo)具有(you)耐(nai)腐蝕特性的(de)金屬材料(liao))做集塵極,另一種(zhong)(zhong)是(shi)用(yong)通過噴水(shui)(shui)或(huo)溢流(liu)水(shui)(shui)形(xing)成(cheng)導(dao)電(dian)水(shui)(shui)膜,利用(yong)不導(dao)電(dian)的(de)非金屬材料(liao)做集塵極。
收塵原理
濕式(shi)電(dian)(dian)(dian)除(chu)塵(chen)(chen)器(qi)和與干(gan)式(shi)電(dian)(dian)(dian)除(chu)塵(chen)(chen)器(qi)的(de)收塵(chen)(chen)原理(li)(li)(li)相同,都(dou)是靠高壓電(dian)(dian)(dian)暈放電(dian)(dian)(dian)使得粉(fen)塵(chen)(chen)荷電(dian)(dian)(dian),荷電(dian)(dian)(dian)后的(de)粉(fen)塵(chen)(chen)在電(dian)(dian)(dian)場力的(de)作用(yong)下到(dao)達集塵(chen)(chen)板/管。干(gan)式(shi)電(dian)(dian)(dian)收塵(chen)(chen)器(qi)主(zhu)要(yao)(yao)處理(li)(li)(li)含(han)(han)水很低的(de)干(gan)氣體,濕式(shi)電(dian)(dian)(dian)除(chu)塵(chen)(chen)器(qi)主(zhu)要(yao)(yao)處理(li)(li)(li)含(han)(han)水較(jiao)高乃(nai)至飽和的(de)濕氣體。在對集塵(chen)(chen)板/管上捕集到(dao)的(de)粉(fen)塵(chen)(chen)清除(chu)方式(shi)上WESP與DESP有較(jiao)大區別(bie),干(gan)式(shi)電(dian)(dian)(dian)除(chu)塵(chen)(chen)器(qi)一般采(cai)用(yong)機械(xie)振(zhen)打或聲(sheng)波清灰(hui)等方式(shi)清除(chu)電(dian)(dian)(dian)極上的(de)積灰(hui),而(er)濕式(shi)電(dian)(dian)(dian)除(chu)塵(chen)(chen)器(qi)則采(cai)用(yong)定期沖洗的(de)方式(shi),使粉(fen)塵(chen)(chen)隨(sui)著沖刷液(ye)的(de)流動而(er)清除(chu)。