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)(dian)除(chu)塵器主(zhu)要(yao)有兩種(zhong)結構形(xing)式,一種(zhong)是使用(yong)耐(nai)腐蝕導(dao)電(dian)(dian)材料(可以為導(dao)電(dian)(dian)性能優良的的非金屬(shu)(shu)材料或具有耐(nai)腐蝕特性的金屬(shu)(shu)材料)做集(ji)塵極,另一種(zhong)是用(yong)通過噴水(shui)或溢流水(shui)形(xing)成導(dao)電(dian)(dian)水(shui)膜(mo),利用(yong)不導(dao)電(dian)(dian)的非金屬(shu)(shu)材料做集(ji)塵極。
收塵(chen)原(yuan)理
濕(shi)(shi)式(shi)電(dian)(dian)(dian)(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器(qi)和與干(gan)式(shi)電(dian)(dian)(dian)(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器(qi)的(de)(de)(de)收塵(chen)(chen)(chen)(chen)(chen)原理(li)相同,都是靠高壓電(dian)(dian)(dian)(dian)暈放電(dian)(dian)(dian)(dian)使(shi)得粉塵(chen)(chen)(chen)(chen)(chen)荷電(dian)(dian)(dian)(dian),荷電(dian)(dian)(dian)(dian)后的(de)(de)(de)粉塵(chen)(chen)(chen)(chen)(chen)在電(dian)(dian)(dian)(dian)場力的(de)(de)(de)作用下(xia)到達集塵(chen)(chen)(chen)(chen)(chen)板/管。干(gan)式(shi)電(dian)(dian)(dian)(dian)收塵(chen)(chen)(chen)(chen)(chen)器(qi)主(zhu)要處(chu)理(li)含(han)水很低的(de)(de)(de)干(gan)氣體,濕(shi)(shi)式(shi)電(dian)(dian)(dian)(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器(qi)主(zhu)要處(chu)理(li)含(han)水較高乃至飽和的(de)(de)(de)濕(shi)(shi)氣體。在對集塵(chen)(chen)(chen)(chen)(chen)板/管上(shang)捕集到的(de)(de)(de)粉塵(chen)(chen)(chen)(chen)(chen)清除(chu)(chu)(chu)方(fang)式(shi)上(shang)WESP與DESP有較大區(qu)別(bie),干(gan)式(shi)電(dian)(dian)(dian)(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器(qi)一般采(cai)用機械振打或聲波(bo)清灰等方(fang)式(shi)清除(chu)(chu)(chu)電(dian)(dian)(dian)(dian)極上(shang)的(de)(de)(de)積灰,而(er)濕(shi)(shi)式(shi)電(dian)(dian)(dian)(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器(qi)則(ze)采(cai)用定期(qi)沖洗的(de)(de)(de)方(fang)式(shi),使(shi)粉塵(chen)(chen)(chen)(chen)(chen)隨著沖刷液的(de)(de)(de)流動而(er)清除(chu)(chu)(chu)。