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)除塵器(qi)主要有兩種結(jie)構形式,一種是(shi)使用耐(nai)腐(fu)蝕導(dao)電(dian)材(cai)料(liao)(可以為導(dao)電(dian)性(xing)能優良的(de)的(de)非金屬(shu)材(cai)料(liao)或(huo)具有耐(nai)腐(fu)蝕特性(xing)的(de)金屬(shu)材(cai)料(liao))做(zuo)(zuo)集塵極,另一種是(shi)用通過噴水或(huo)溢流水形成導(dao)電(dian)水膜(mo),利用不導(dao)電(dian)的(de)非金屬(shu)材(cai)料(liao)做(zuo)(zuo)集塵極。
收塵原(yuan)理
濕式(shi)(shi)電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器和與干式(shi)(shi)電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器的(de)收塵(chen)(chen)(chen)(chen)原(yuan)理相同,都是靠高(gao)壓電(dian)(dian)暈(yun)放電(dian)(dian)使(shi)得粉塵(chen)(chen)(chen)(chen)荷電(dian)(dian),荷電(dian)(dian)后的(de)粉塵(chen)(chen)(chen)(chen)在電(dian)(dian)場力的(de)作(zuo)用(yong)下到(dao)(dao)達集(ji)塵(chen)(chen)(chen)(chen)板(ban)/管。干式(shi)(shi)電(dian)(dian)收塵(chen)(chen)(chen)(chen)器主要處(chu)(chu)理含水(shui)(shui)很低的(de)干氣體,濕式(shi)(shi)電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器主要處(chu)(chu)理含水(shui)(shui)較高(gao)乃至(zhi)飽和的(de)濕氣體。在對集(ji)塵(chen)(chen)(chen)(chen)板(ban)/管上(shang)捕(bu)集(ji)到(dao)(dao)的(de)粉塵(chen)(chen)(chen)(chen)清除(chu)方式(shi)(shi)上(shang)WESP與DESP有(you)較大區(qu)別(bie),干式(shi)(shi)電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器一般采用(yong)機械(xie)振打或聲波(bo)清灰等方式(shi)(shi)清除(chu)電(dian)(dian)極上(shang)的(de)積灰,而濕式(shi)(shi)電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器則采用(yong)定期沖洗的(de)方式(shi)(shi),使(shi)粉塵(chen)(chen)(chen)(chen)隨著(zhu)沖刷(shua)液的(de)流動(dong)而清除(chu)。