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)式電除塵(chen)器主要有(you)兩(liang)種結構形式,一種是使用(yong)(yong)耐(nai)(nai)腐蝕(shi)導電材(cai)料(liao)(可以為導電性能優良的(de)(de)的(de)(de)非金(jin)(jin)屬材(cai)料(liao)或具(ju)有(you)耐(nai)(nai)腐蝕(shi)特性的(de)(de)金(jin)(jin)屬材(cai)料(liao))做(zuo)集(ji)塵(chen)極(ji),另(ling)一種是用(yong)(yong)通過噴水(shui)或溢(yi)流水(shui)形成導電水(shui)膜,利(li)用(yong)(yong)不導電的(de)(de)非金(jin)(jin)屬材(cai)料(liao)做(zuo)集(ji)塵(chen)極(ji)。
收塵原理
濕式電(dian)(dian)(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)器和與干式電(dian)(dian)(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)器的(de)收(shou)塵(chen)(chen)(chen)原理相同,都是靠高壓(ya)電(dian)(dian)(dian)暈放電(dian)(dian)(dian)使得(de)粉(fen)塵(chen)(chen)(chen)荷電(dian)(dian)(dian),荷電(dian)(dian)(dian)后的(de)粉(fen)塵(chen)(chen)(chen)在電(dian)(dian)(dian)場力的(de)作用(yong)(yong)下到達(da)集塵(chen)(chen)(chen)板(ban)/管(guan)。干式電(dian)(dian)(dian)收(shou)塵(chen)(chen)(chen)器主要處理含水很低(di)的(de)干氣體(ti),濕式電(dian)(dian)(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)器主要處理含水較(jiao)(jiao)高乃(nai)至飽(bao)和的(de)濕氣體(ti)。在對集塵(chen)(chen)(chen)板(ban)/管(guan)上捕集到的(de)粉(fen)塵(chen)(chen)(chen)清除(chu)(chu)(chu)方式上WESP與DESP有較(jiao)(jiao)大區別(bie),干式電(dian)(dian)(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)器一般采用(yong)(yong)機械振(zhen)打(da)或聲波清灰等(deng)方式清除(chu)(chu)(chu)電(dian)(dian)(dian)極上的(de)積(ji)灰,而(er)濕式電(dian)(dian)(dian)除(chu)(chu)(chu)塵(chen)(chen)(chen)器則采用(yong)(yong)定期(qi)沖洗的(de)方式,使粉(fen)塵(chen)(chen)(chen)隨(sui)著沖刷(shua)液的(de)流動而(er)清除(chu)(chu)(chu)。