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。
濕式電除塵器主要有(you)兩種(zhong)結構形式,一種(zhong)是使用耐腐蝕(shi)導電材(cai)(cai)料(liao)(可以(yi)為導電性能優良的(de)(de)的(de)(de)非金屬材(cai)(cai)料(liao)或具(ju)有(you)耐腐蝕(shi)特性的(de)(de)金屬材(cai)(cai)料(liao))做(zuo)集塵極(ji),另一種(zhong)是用通過噴水或溢流水形成導電水膜,利用不導電的(de)(de)非金屬材(cai)(cai)料(liao)做(zuo)集塵極(ji)。
收塵原理
濕式(shi)(shi)電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器(qi)(qi)(qi)和與(yu)干式(shi)(shi)電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器(qi)(qi)(qi)的(de)(de)收(shou)塵(chen)(chen)(chen)原理相(xiang)同(tong),都(dou)是(shi)靠高(gao)壓(ya)電(dian)(dian)(dian)暈(yun)放電(dian)(dian)(dian)使得粉(fen)(fen)(fen)塵(chen)(chen)(chen)荷電(dian)(dian)(dian),荷電(dian)(dian)(dian)后的(de)(de)粉(fen)(fen)(fen)塵(chen)(chen)(chen)在(zai)電(dian)(dian)(dian)場力的(de)(de)作用下(xia)到(dao)達集(ji)塵(chen)(chen)(chen)板/管。干式(shi)(shi)電(dian)(dian)(dian)收(shou)塵(chen)(chen)(chen)器(qi)(qi)(qi)主要(yao)處理含水很低(di)的(de)(de)干氣體,濕式(shi)(shi)電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器(qi)(qi)(qi)主要(yao)處理含水較(jiao)高(gao)乃至(zhi)飽和的(de)(de)濕氣體。在(zai)對集(ji)塵(chen)(chen)(chen)板/管上捕集(ji)到(dao)的(de)(de)粉(fen)(fen)(fen)塵(chen)(chen)(chen)清(qing)除(chu)方(fang)式(shi)(shi)上WESP與(yu)DESP有(you)較(jiao)大區(qu)別,干式(shi)(shi)電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器(qi)(qi)(qi)一般采用機(ji)械振打或(huo)聲波清(qing)灰(hui)等方(fang)式(shi)(shi)清(qing)除(chu)電(dian)(dian)(dian)極上的(de)(de)積灰(hui),而濕式(shi)(shi)電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器(qi)(qi)(qi)則(ze)采用定(ding)期沖洗的(de)(de)方(fang)式(shi)(shi),使粉(fen)(fen)(fen)塵(chen)(chen)(chen)隨著(zhu)沖刷(shua)液的(de)(de)流動而清(qing)除(chu)。