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(chen)(chen)器主(zhu)要(yao)有(you)(you)兩(liang)種結構(gou)形式,一(yi)種是使用耐(nai)腐蝕導(dao)電材(cai)料(liao)(liao)(liao)(可以為導(dao)電性能(neng)優良的的非金屬(shu)(shu)材(cai)料(liao)(liao)(liao)或(huo)具有(you)(you)耐(nai)腐蝕特(te)性的金屬(shu)(shu)材(cai)料(liao)(liao)(liao))做集(ji)塵(chen)(chen)極,另一(yi)種是用通(tong)過噴水或(huo)溢流水形成導(dao)電水膜,利用不導(dao)電的非金屬(shu)(shu)材(cai)料(liao)(liao)(liao)做集(ji)塵(chen)(chen)極。
收(shou)塵原理
濕(shi)(shi)式(shi)(shi)(shi)電(dian)除塵(chen)(chen)(chen)(chen)(chen)器(qi)和(he)(he)與干式(shi)(shi)(shi)電(dian)除塵(chen)(chen)(chen)(chen)(chen)器(qi)的(de)(de)收塵(chen)(chen)(chen)(chen)(chen)原(yuan)理相同,都是靠高壓電(dian)暈放(fang)電(dian)使得粉塵(chen)(chen)(chen)(chen)(chen)荷(he)電(dian),荷(he)電(dian)后(hou)的(de)(de)粉塵(chen)(chen)(chen)(chen)(chen)在(zai)電(dian)場力的(de)(de)作(zuo)用(yong)下到達集塵(chen)(chen)(chen)(chen)(chen)板(ban)/管。干式(shi)(shi)(shi)電(dian)收塵(chen)(chen)(chen)(chen)(chen)器(qi)主要(yao)(yao)處理含水很低的(de)(de)干氣體,濕(shi)(shi)式(shi)(shi)(shi)電(dian)除塵(chen)(chen)(chen)(chen)(chen)器(qi)主要(yao)(yao)處理含水較高乃至飽和(he)(he)的(de)(de)濕(shi)(shi)氣體。在(zai)對集塵(chen)(chen)(chen)(chen)(chen)板(ban)/管上捕集到的(de)(de)粉塵(chen)(chen)(chen)(chen)(chen)清(qing)除方(fang)式(shi)(shi)(shi)上WESP與DESP有較大區別,干式(shi)(shi)(shi)電(dian)除塵(chen)(chen)(chen)(chen)(chen)器(qi)一般采用(yong)機械振打(da)或聲波(bo)清(qing)灰等方(fang)式(shi)(shi)(shi)清(qing)除電(dian)極上的(de)(de)積(ji)灰,而(er)濕(shi)(shi)式(shi)(shi)(shi)電(dian)除塵(chen)(chen)(chen)(chen)(chen)器(qi)則采用(yong)定期沖洗的(de)(de)方(fang)式(shi)(shi)(shi),使粉塵(chen)(chen)(chen)(chen)(chen)隨著沖刷(shua)液的(de)(de)流動而(er)清(qing)除。