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)除塵器主要有(you)兩種結構形式,一(yi)種是使用耐腐蝕導電(dian)材(cai)料(liao)(可以(yi)為導電(dian)性(xing)能優(you)良的的非金屬材(cai)料(liao)或具有(you)耐腐蝕特性(xing)的金屬材(cai)料(liao))做(zuo)(zuo)集塵極,另一(yi)種是用通過噴水(shui)(shui)或溢流水(shui)(shui)形成導電(dian)水(shui)(shui)膜,利用不導電(dian)的非金屬材(cai)料(liao)做(zuo)(zuo)集塵極。
收塵原理(li)
濕式(shi)(shi)(shi)(shi)電(dian)(dian)除(chu)塵(chen)(chen)(chen)器(qi)和與干式(shi)(shi)(shi)(shi)電(dian)(dian)除(chu)塵(chen)(chen)(chen)器(qi)的(de)(de)(de)收塵(chen)(chen)(chen)原理(li)相同,都是靠高壓電(dian)(dian)暈放電(dian)(dian)使得粉塵(chen)(chen)(chen)荷電(dian)(dian),荷電(dian)(dian)后的(de)(de)(de)粉塵(chen)(chen)(chen)在(zai)電(dian)(dian)場力的(de)(de)(de)作用(yong)下到(dao)達(da)集塵(chen)(chen)(chen)板/管(guan)。干式(shi)(shi)(shi)(shi)電(dian)(dian)收塵(chen)(chen)(chen)器(qi)主要(yao)處理(li)含水(shui)很低的(de)(de)(de)干氣體(ti),濕式(shi)(shi)(shi)(shi)電(dian)(dian)除(chu)塵(chen)(chen)(chen)器(qi)主要(yao)處理(li)含水(shui)較高乃至飽和的(de)(de)(de)濕氣體(ti)。在(zai)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(qing)除(chu)方式(shi)(shi)(shi)(shi)上(shang)(shang)WESP與DESP有較大(da)區別(bie),干式(shi)(shi)(shi)(shi)電(dian)(dian)除(chu)塵(chen)(chen)(chen)器(qi)一(yi)般采用(yong)機械振打或聲波清(qing)灰等方式(shi)(shi)(shi)(shi)清(qing)除(chu)電(dian)(dian)極上(shang)(shang)的(de)(de)(de)積(ji)灰,而濕式(shi)(shi)(shi)(shi)電(dian)(dian)除(chu)塵(chen)(chen)(chen)器(qi)則(ze)采用(yong)定期沖洗的(de)(de)(de)方式(shi)(shi)(shi)(shi),使粉塵(chen)(chen)(chen)隨著(zhu)沖刷液的(de)(de)(de)流動而清(qing)除(chu)。