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)(dian)除(chu)塵(chen)器主要有兩種(zhong)結(jie)構形式,一種(zhong)是使用耐(nai)腐蝕(shi)導電(dian)(dian)材(cai)料(liao)(可以為導電(dian)(dian)性能優良的的非金屬(shu)材(cai)料(liao)或(huo)具有耐(nai)腐蝕(shi)特性的金屬(shu)材(cai)料(liao))做集塵(chen)極(ji),另一種(zhong)是用通過噴水(shui)(shui)或(huo)溢流水(shui)(shui)形成導電(dian)(dian)水(shui)(shui)膜,利用不導電(dian)(dian)的非金屬(shu)材(cai)料(liao)做集塵(chen)極(ji)。
收塵(chen)原理
濕式電(dian)(dian)(dian)(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器和與干(gan)式電(dian)(dian)(dian)(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器的(de)(de)(de)收(shou)塵(chen)(chen)(chen)(chen)(chen)原(yuan)理相同,都是(shi)靠高壓電(dian)(dian)(dian)(dian)(dian)(dian)暈放電(dian)(dian)(dian)(dian)(dian)(dian)使得粉塵(chen)(chen)(chen)(chen)(chen)荷電(dian)(dian)(dian)(dian)(dian)(dian),荷電(dian)(dian)(dian)(dian)(dian)(dian)后的(de)(de)(de)粉塵(chen)(chen)(chen)(chen)(chen)在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)場力的(de)(de)(de)作用下到(dao)達集(ji)塵(chen)(chen)(chen)(chen)(chen)板(ban)/管(guan)。干(gan)式電(dian)(dian)(dian)(dian)(dian)(dian)收(shou)塵(chen)(chen)(chen)(chen)(chen)器主(zhu)要處理含(han)(han)水很(hen)低的(de)(de)(de)干(gan)氣體,濕式電(dian)(dian)(dian)(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器主(zhu)要處理含(han)(han)水較(jiao)高乃至飽(bao)和的(de)(de)(de)濕氣體。在(zai)對(dui)集(ji)塵(chen)(chen)(chen)(chen)(chen)板(ban)/管(guan)上(shang)(shang)捕集(ji)到(dao)的(de)(de)(de)粉塵(chen)(chen)(chen)(chen)(chen)清除(chu)(chu)方(fang)式上(shang)(shang)WESP與DESP有(you)較(jiao)大區別(bie),干(gan)式電(dian)(dian)(dian)(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器一般采(cai)用機(ji)械振打(da)或聲波清灰等方(fang)式清除(chu)(chu)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)上(shang)(shang)的(de)(de)(de)積灰,而(er)濕式電(dian)(dian)(dian)(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器則采(cai)用定期(qi)沖洗的(de)(de)(de)方(fang)式,使粉塵(chen)(chen)(chen)(chen)(chen)隨著沖刷液的(de)(de)(de)流動而(er)清除(chu)(chu)。