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)電除塵器主(zhu)要有兩種(zhong)(zhong)結構形式(shi),一種(zhong)(zhong)是使用耐腐蝕導(dao)電材料(可以為導(dao)電性能(neng)優良(liang)的的非(fei)金(jin)屬(shu)材料或具有耐腐蝕特性的金(jin)屬(shu)材料)做(zuo)集塵極(ji),另一種(zhong)(zhong)是用通過噴水或溢流水形成(cheng)導(dao)電水膜,利用不導(dao)電的非(fei)金(jin)屬(shu)材料做(zuo)集塵極(ji)。
收(shou)塵原理
濕式(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)和與干(gan)式(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)的收塵(chen)(chen)(chen)原理(li)相同,都是(shi)靠(kao)高(gao)壓電(dian)(dian)暈(yun)放電(dian)(dian)使(shi)得粉塵(chen)(chen)(chen)荷電(dian)(dian),荷電(dian)(dian)后(hou)的粉塵(chen)(chen)(chen)在電(dian)(dian)場力的作用下(xia)到達(da)集(ji)(ji)塵(chen)(chen)(chen)板/管。干(gan)式(shi)電(dian)(dian)收塵(chen)(chen)(chen)器(qi)(qi)主要(yao)處理(li)含水(shui)很低(di)的干(gan)氣(qi)體(ti),濕式(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)主要(yao)處理(li)含水(shui)較高(gao)乃至飽和的濕氣(qi)體(ti)。在對集(ji)(ji)塵(chen)(chen)(chen)板/管上(shang)捕集(ji)(ji)到的粉塵(chen)(chen)(chen)清除(chu)(chu)方(fang)式(shi)上(shang)WESP與DESP有較大區別,干(gan)式(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)一般采用機械振打或聲波清灰等方(fang)式(shi)清除(chu)(chu)電(dian)(dian)極上(shang)的積灰,而(er)(er)濕式(shi)電(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)器(qi)(qi)則采用定期沖(chong)洗(xi)的方(fang)式(shi),使(shi)粉塵(chen)(chen)(chen)隨(sui)著沖(chong)刷(shua)液的流(liu)動而(er)(er)清除(chu)(chu)。