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)器主要有兩種結(jie)構形式,一種是使用(yong)(yong)(yong)耐腐(fu)蝕導(dao)電(dian)材料(可以(yi)為導(dao)電(dian)性能優良的(de)的(de)非(fei)金(jin)屬材料或具有耐腐(fu)蝕特性的(de)金(jin)屬材料)做(zuo)集塵(chen)極,另一種是用(yong)(yong)(yong)通(tong)過噴水或溢流水形成導(dao)電(dian)水膜,利用(yong)(yong)(yong)不導(dao)電(dian)的(de)非(fei)金(jin)屬材料做(zuo)集塵(chen)極。
收塵(chen)原(yuan)理(li)
濕(shi)式(shi)(shi)電(dian)除(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)和與干式(shi)(shi)電(dian)除(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)的(de)(de)(de)收塵(chen)(chen)(chen)原理(li)相同,都是靠高壓電(dian)暈放電(dian)使得粉(fen)塵(chen)(chen)(chen)荷(he)電(dian),荷(he)電(dian)后(hou)的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)在電(dian)場力的(de)(de)(de)作用(yong)下(xia)到(dao)達集塵(chen)(chen)(chen)板/管(guan)。干式(shi)(shi)電(dian)收塵(chen)(chen)(chen)器(qi)(qi)主(zhu)要處(chu)理(li)含水很(hen)低的(de)(de)(de)干氣(qi)體,濕(shi)式(shi)(shi)電(dian)除(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)主(zhu)要處(chu)理(li)含水較高乃至飽和的(de)(de)(de)濕(shi)氣(qi)體。在對集塵(chen)(chen)(chen)板/管(guan)上(shang)捕集到(dao)的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)清(qing)除(chu)(chu)方式(shi)(shi)上(shang)WESP與DESP有較大區別,干式(shi)(shi)電(dian)除(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)一般采(cai)用(yong)機械振(zhen)打或聲(sheng)波清(qing)灰等方式(shi)(shi)清(qing)除(chu)(chu)電(dian)極(ji)上(shang)的(de)(de)(de)積灰,而(er)濕(shi)式(shi)(shi)電(dian)除(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)則采(cai)用(yong)定期沖(chong)洗(xi)的(de)(de)(de)方式(shi)(shi),使粉(fen)塵(chen)(chen)(chen)隨(sui)著沖(chong)刷(shua)液的(de)(de)(de)流動而(er)清(qing)除(chu)(chu)。