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(shi)電(dian)(dian)(dian)除塵(chen)器主要有(you)兩種結構形式(shi),一(yi)(yi)種是使用耐腐(fu)蝕(shi)導(dao)電(dian)(dian)(dian)材料(可以為導(dao)電(dian)(dian)(dian)性能優良的的非金屬(shu)材料或(huo)具有(you)耐腐(fu)蝕(shi)特性的金屬(shu)材料)做集(ji)塵(chen)極,另一(yi)(yi)種是用通過噴(pen)水或(huo)溢(yi)流(liu)水形成導(dao)電(dian)(dian)(dian)水膜(mo),利用不導(dao)電(dian)(dian)(dian)的非金屬(shu)材料做集(ji)塵(chen)極。
收塵原理
濕(shi)式電(dian)除塵(chen)(chen)(chen)(chen)器(qi)(qi)和與干式電(dian)除塵(chen)(chen)(chen)(chen)器(qi)(qi)的(de)(de)(de)收(shou)塵(chen)(chen)(chen)(chen)原理相同,都是靠高(gao)壓電(dian)暈放電(dian)使得粉塵(chen)(chen)(chen)(chen)荷電(dian),荷電(dian)后的(de)(de)(de)粉塵(chen)(chen)(chen)(chen)在電(dian)場力的(de)(de)(de)作用(yong)下到達集塵(chen)(chen)(chen)(chen)板(ban)/管(guan)(guan)。干式電(dian)收(shou)塵(chen)(chen)(chen)(chen)器(qi)(qi)主(zhu)要(yao)(yao)處(chu)理含水很低的(de)(de)(de)干氣體(ti)(ti),濕(shi)式電(dian)除塵(chen)(chen)(chen)(chen)器(qi)(qi)主(zhu)要(yao)(yao)處(chu)理含水較(jiao)高(gao)乃至飽和的(de)(de)(de)濕(shi)氣體(ti)(ti)。在對集塵(chen)(chen)(chen)(chen)板(ban)/管(guan)(guan)上捕集到的(de)(de)(de)粉塵(chen)(chen)(chen)(chen)清除方式上WESP與DESP有較(jiao)大區(qu)別,干式電(dian)除塵(chen)(chen)(chen)(chen)器(qi)(qi)一般采(cai)用(yong)機械振打或聲波清灰等方式清除電(dian)極上的(de)(de)(de)積(ji)灰,而濕(shi)式電(dian)除塵(chen)(chen)(chen)(chen)器(qi)(qi)則采(cai)用(yong)定期沖洗的(de)(de)(de)方式,使粉塵(chen)(chen)(chen)(chen)隨著沖刷(shua)液的(de)(de)(de)流(liu)動而清除。