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)(dian)除塵(chen)(chen)器(qi)主要有兩種(zhong)結(jie)構形式,一種(zhong)是使用耐腐蝕導(dao)電(dian)(dian)材(cai)料(liao)(liao)(可以為導(dao)電(dian)(dian)性(xing)能優(you)良的(de)的(de)非金(jin)(jin)屬材(cai)料(liao)(liao)或具有耐腐蝕特性(xing)的(de)金(jin)(jin)屬材(cai)料(liao)(liao))做(zuo)集(ji)塵(chen)(chen)極,另一種(zhong)是用通過噴(pen)水或溢流水形成導(dao)電(dian)(dian)水膜,利(li)用不(bu)導(dao)電(dian)(dian)的(de)非金(jin)(jin)屬材(cai)料(liao)(liao)做(zuo)集(ji)塵(chen)(chen)極。
收(shou)塵(chen)原(yuan)理
濕式(shi)(shi)電(dian)(dian)(dian)除(chu)(chu)(chu)塵器(qi)和與(yu)干(gan)(gan)式(shi)(shi)電(dian)(dian)(dian)除(chu)(chu)(chu)塵器(qi)的(de)收(shou)塵原理(li)相同,都是(shi)靠高壓電(dian)(dian)(dian)暈放(fang)電(dian)(dian)(dian)使得粉(fen)塵荷電(dian)(dian)(dian),荷電(dian)(dian)(dian)后的(de)粉(fen)塵在電(dian)(dian)(dian)場力的(de)作用下到達(da)集塵板(ban)/管。干(gan)(gan)式(shi)(shi)電(dian)(dian)(dian)收(shou)塵器(qi)主(zhu)要(yao)處(chu)理(li)含水很低的(de)干(gan)(gan)氣體,濕式(shi)(shi)電(dian)(dian)(dian)除(chu)(chu)(chu)塵器(qi)主(zhu)要(yao)處(chu)理(li)含水較(jiao)高乃至飽和的(de)濕氣體。在對(dui)集塵板(ban)/管上(shang)捕集到的(de)粉(fen)塵清除(chu)(chu)(chu)方(fang)式(shi)(shi)上(shang)WESP與(yu)DESP有較(jiao)大區別,干(gan)(gan)式(shi)(shi)電(dian)(dian)(dian)除(chu)(chu)(chu)塵器(qi)一般(ban)采用機(ji)械(xie)振打或聲波清灰等方(fang)式(shi)(shi)清除(chu)(chu)(chu)電(dian)(dian)(dian)極上(shang)的(de)積灰,而(er)濕式(shi)(shi)電(dian)(dian)(dian)除(chu)(chu)(chu)塵器(qi)則(ze)采用定(ding)期沖洗的(de)方(fang)式(shi)(shi),使粉(fen)塵隨著沖刷液的(de)流動而(er)清除(chu)(chu)(chu)。