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(shi)(shi)電(dian)(dian)(dian)除(chu)塵(chen)器主要(yao)有兩(liang)種(zhong)結構形式(shi)(shi),一(yi)種(zhong)是使用(yong)(yong)耐(nai)腐(fu)蝕導電(dian)(dian)(dian)材(cai)(cai)料(可(ke)以為導電(dian)(dian)(dian)性(xing)能優良的(de)的(de)非金屬(shu)材(cai)(cai)料或具有耐(nai)腐(fu)蝕特性(xing)的(de)金屬(shu)材(cai)(cai)料)做(zuo)集(ji)塵(chen)極,另一(yi)種(zhong)是用(yong)(yong)通過噴水或溢流水形成導電(dian)(dian)(dian)水膜,利(li)用(yong)(yong)不導電(dian)(dian)(dian)的(de)非金屬(shu)材(cai)(cai)料做(zuo)集(ji)塵(chen)極。
收塵原(yuan)理
濕式(shi)(shi)電(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)和(he)與干(gan)式(shi)(shi)電(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)的(de)(de)(de)收塵(chen)(chen)(chen)(chen)原理相同,都是靠高(gao)壓(ya)電(dian)(dian)(dian)暈放電(dian)(dian)(dian)使得粉(fen)塵(chen)(chen)(chen)(chen)荷(he)電(dian)(dian)(dian),荷(he)電(dian)(dian)(dian)后的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)在(zai)電(dian)(dian)(dian)場力的(de)(de)(de)作用(yong)下到達集塵(chen)(chen)(chen)(chen)板/管。干(gan)式(shi)(shi)電(dian)(dian)(dian)收塵(chen)(chen)(chen)(chen)器(qi)主要處理含水很低的(de)(de)(de)干(gan)氣體(ti),濕式(shi)(shi)電(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)主要處理含水較(jiao)高(gao)乃至飽(bao)和(he)的(de)(de)(de)濕氣體(ti)。在(zai)對(dui)集塵(chen)(chen)(chen)(chen)板/管上(shang)捕集到的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)清除(chu)(chu)方式(shi)(shi)上(shang)WESP與DESP有(you)較(jiao)大(da)區別(bie),干(gan)式(shi)(shi)電(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)一般采用(yong)機械(xie)振打或聲波清灰(hui)等方式(shi)(shi)清除(chu)(chu)電(dian)(dian)(dian)極(ji)上(shang)的(de)(de)(de)積灰(hui),而濕式(shi)(shi)電(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)則采用(yong)定期沖洗的(de)(de)(de)方式(shi)(shi),使粉(fen)塵(chen)(chen)(chen)(chen)隨著沖刷液的(de)(de)(de)流動而清除(chu)(chu)。