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)(dian)除塵器主要(yao)有兩種結構形(xing)式,一種是(shi)使用(yong)耐(nai)腐(fu)蝕導電(dian)(dian)(dian)材料(可以為導電(dian)(dian)(dian)性能優良(liang)的的非(fei)金屬材料或(huo)具有耐(nai)腐(fu)蝕特性的金屬材料)做集(ji)塵極(ji),另一種是(shi)用(yong)通(tong)過噴(pen)水(shui)(shui)或(huo)溢流水(shui)(shui)形(xing)成導電(dian)(dian)(dian)水(shui)(shui)膜,利(li)用(yong)不導電(dian)(dian)(dian)的非(fei)金屬材料做集(ji)塵極(ji)。
收塵原理(li)
濕(shi)式(shi)(shi)電(dian)除(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)(qi)(qi)和與(yu)干(gan)式(shi)(shi)電(dian)除(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)收(shou)塵(chen)(chen)(chen)(chen)原理(li)(li)相同,都是(shi)靠高(gao)壓電(dian)暈放電(dian)使得粉(fen)塵(chen)(chen)(chen)(chen)荷電(dian),荷電(dian)后的(de)(de)(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)在(zai)電(dian)場力的(de)(de)(de)(de)(de)作用(yong)下到達集塵(chen)(chen)(chen)(chen)板/管。干(gan)式(shi)(shi)電(dian)收(shou)塵(chen)(chen)(chen)(chen)器(qi)(qi)(qi)(qi)主要(yao)處理(li)(li)含水(shui)很低的(de)(de)(de)(de)(de)干(gan)氣體(ti),濕(shi)式(shi)(shi)電(dian)除(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)(qi)(qi)主要(yao)處理(li)(li)含水(shui)較高(gao)乃至飽和的(de)(de)(de)(de)(de)濕(shi)氣體(ti)。在(zai)對集塵(chen)(chen)(chen)(chen)板/管上(shang)(shang)捕集到的(de)(de)(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)清除(chu)方(fang)(fang)式(shi)(shi)上(shang)(shang)WESP與(yu)DESP有較大區別(bie),干(gan)式(shi)(shi)電(dian)除(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)(qi)(qi)一(yi)般采(cai)用(yong)機械振(zhen)打或聲波(bo)清灰等方(fang)(fang)式(shi)(shi)清除(chu)電(dian)極上(shang)(shang)的(de)(de)(de)(de)(de)積灰,而(er)(er)濕(shi)式(shi)(shi)電(dian)除(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)(qi)(qi)則(ze)采(cai)用(yong)定(ding)期(qi)沖洗的(de)(de)(de)(de)(de)方(fang)(fang)式(shi)(shi),使粉(fen)塵(chen)(chen)(chen)(chen)隨著沖刷液的(de)(de)(de)(de)(de)流動而(er)(er)清除(chu)。