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)(chen)器主(zhu)要有(you)兩種結構形式,一種是使用(yong)耐(nai)腐蝕導(dao)電(dian)材料(liao)(可以(yi)為(wei)導(dao)電(dian)性能優良(liang)的(de)的(de)非金屬材料(liao)或(huo)具有(you)耐(nai)腐蝕特(te)性的(de)金屬材料(liao))做集塵(chen)(chen)(chen)極,另一種是用(yong)通過(guo)噴水或(huo)溢流水形成導(dao)電(dian)水膜(mo),利用(yong)不導(dao)電(dian)的(de)非金屬材料(liao)做集塵(chen)(chen)(chen)極。
收塵(chen)原理
濕(shi)式電(dian)(dian)(dian)除塵(chen)(chen)(chen)器(qi)和(he)與(yu)干(gan)式電(dian)(dian)(dian)除塵(chen)(chen)(chen)器(qi)的(de)(de)(de)收(shou)塵(chen)(chen)(chen)原理(li)相同,都(dou)是靠高壓電(dian)(dian)(dian)暈放(fang)電(dian)(dian)(dian)使(shi)得粉塵(chen)(chen)(chen)荷電(dian)(dian)(dian),荷電(dian)(dian)(dian)后的(de)(de)(de)粉塵(chen)(chen)(chen)在電(dian)(dian)(dian)場力的(de)(de)(de)作用下到(dao)達集塵(chen)(chen)(chen)板/管(guan)。干(gan)式電(dian)(dian)(dian)收(shou)塵(chen)(chen)(chen)器(qi)主(zhu)要(yao)處理(li)含水(shui)很低的(de)(de)(de)干(gan)氣(qi)體,濕(shi)式電(dian)(dian)(dian)除塵(chen)(chen)(chen)器(qi)主(zhu)要(yao)處理(li)含水(shui)較高乃(nai)至飽和(he)的(de)(de)(de)濕(shi)氣(qi)體。在對集塵(chen)(chen)(chen)板/管(guan)上(shang)(shang)捕集到(dao)的(de)(de)(de)粉塵(chen)(chen)(chen)清除方式上(shang)(shang)WESP與(yu)DESP有較大區別(bie),干(gan)式電(dian)(dian)(dian)除塵(chen)(chen)(chen)器(qi)一般采(cai)用機械振打(da)或(huo)聲波清灰等(deng)方式清除電(dian)(dian)(dian)極上(shang)(shang)的(de)(de)(de)積灰,而濕(shi)式電(dian)(dian)(dian)除塵(chen)(chen)(chen)器(qi)則(ze)采(cai)用定期沖洗的(de)(de)(de)方式,使(shi)粉塵(chen)(chen)(chen)隨著沖刷液的(de)(de)(de)流動而清除。