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)除塵(chen)(chen)器主要有(you)兩種結構形式,一種是使用耐腐(fu)蝕(shi)導(dao)電(dian)材(cai)料(liao)(可以為(wei)導(dao)電(dian)性能優良的(de)的(de)非(fei)金屬(shu)材(cai)料(liao)或具有(you)耐腐(fu)蝕(shi)特(te)性的(de)金屬(shu)材(cai)料(liao))做集(ji)(ji)塵(chen)(chen)極(ji),另一種是用通過噴水(shui)或溢流水(shui)形成(cheng)導(dao)電(dian)水(shui)膜,利(li)用不導(dao)電(dian)的(de)非(fei)金屬(shu)材(cai)料(liao)做集(ji)(ji)塵(chen)(chen)極(ji)。
收塵(chen)原理
濕(shi)(shi)式(shi)(shi)(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)器和與(yu)干式(shi)(shi)(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)器的(de)收塵(chen)(chen)原(yuan)理相同(tong),都是(shi)靠高壓電(dian)(dian)暈放電(dian)(dian)使(shi)得粉塵(chen)(chen)荷電(dian)(dian),荷電(dian)(dian)后的(de)粉塵(chen)(chen)在電(dian)(dian)場(chang)力(li)的(de)作(zuo)用(yong)下到達集塵(chen)(chen)板(ban)/管。干式(shi)(shi)(shi)(shi)電(dian)(dian)收塵(chen)(chen)器主要處理含水(shui)很低的(de)干氣(qi)體(ti)(ti),濕(shi)(shi)式(shi)(shi)(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)器主要處理含水(shui)較(jiao)高乃(nai)至飽和的(de)濕(shi)(shi)氣(qi)體(ti)(ti)。在對集塵(chen)(chen)板(ban)/管上捕集到的(de)粉塵(chen)(chen)清(qing)除(chu)(chu)方(fang)式(shi)(shi)(shi)(shi)上WESP與(yu)DESP有較(jiao)大區別,干式(shi)(shi)(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)器一般采(cai)用(yong)機械(xie)振打或聲波清(qing)灰等方(fang)式(shi)(shi)(shi)(shi)清(qing)除(chu)(chu)電(dian)(dian)極上的(de)積(ji)灰,而(er)濕(shi)(shi)式(shi)(shi)(shi)(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)器則(ze)采(cai)用(yong)定(ding)期沖(chong)洗的(de)方(fang)式(shi)(shi)(shi)(shi),使(shi)粉塵(chen)(chen)隨著沖(chong)刷(shua)液的(de)流動(dong)而(er)清(qing)除(chu)(chu)。