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)除塵器主(zhu)要有兩種(zhong)(zhong)結構形式(shi),一種(zhong)(zhong)是(shi)(shi)使用(yong)耐腐蝕導(dao)(dao)電(dian)(dian)(dian)材(cai)料(liao)(可以為導(dao)(dao)電(dian)(dian)(dian)性能優良的(de)的(de)非金(jin)(jin)屬材(cai)料(liao)或具(ju)有耐腐蝕特性的(de)金(jin)(jin)屬材(cai)料(liao))做集(ji)(ji)塵極,另一種(zhong)(zhong)是(shi)(shi)用(yong)通(tong)過噴水或溢流水形成導(dao)(dao)電(dian)(dian)(dian)水膜,利用(yong)不導(dao)(dao)電(dian)(dian)(dian)的(de)非金(jin)(jin)屬材(cai)料(liao)做集(ji)(ji)塵極。
收塵原(yuan)理
濕(shi)式電(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)和(he)與(yu)干(gan)式電(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)的(de)(de)收塵(chen)(chen)(chen)(chen)原理(li)相同,都是靠高(gao)壓電(dian)(dian)暈放電(dian)(dian)使(shi)(shi)得粉塵(chen)(chen)(chen)(chen)荷電(dian)(dian),荷電(dian)(dian)后的(de)(de)粉塵(chen)(chen)(chen)(chen)在電(dian)(dian)場力的(de)(de)作用(yong)下到達集塵(chen)(chen)(chen)(chen)板/管。干(gan)式電(dian)(dian)收塵(chen)(chen)(chen)(chen)器(qi)(qi)主(zhu)要(yao)處(chu)理(li)含水很低的(de)(de)干(gan)氣(qi)體,濕(shi)式電(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)主(zhu)要(yao)處(chu)理(li)含水較(jiao)高(gao)乃至飽和(he)的(de)(de)濕(shi)氣(qi)體。在對集塵(chen)(chen)(chen)(chen)板/管上(shang)(shang)捕集到的(de)(de)粉塵(chen)(chen)(chen)(chen)清除(chu)(chu)方式上(shang)(shang)WESP與(yu)DESP有(you)較(jiao)大區別(bie),干(gan)式電(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)一般采用(yong)機械振打或聲波清灰等(deng)方式清除(chu)(chu)電(dian)(dian)極上(shang)(shang)的(de)(de)積(ji)灰,而濕(shi)式電(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)(qi)則采用(yong)定期沖洗的(de)(de)方式,使(shi)(shi)粉塵(chen)(chen)(chen)(chen)隨著沖刷(shua)液的(de)(de)流動而清除(chu)(chu)。