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)除塵(chen)器主要有(you)兩種結構形式(shi),一(yi)(yi)種是使(shi)用耐(nai)腐(fu)蝕(shi)導(dao)電(dian)(dian)材(cai)料(liao)(liao)(可以為(wei)導(dao)電(dian)(dian)性(xing)能優良的(de)的(de)非(fei)金屬材(cai)料(liao)(liao)或具有(you)耐(nai)腐(fu)蝕(shi)特(te)性(xing)的(de)金屬材(cai)料(liao)(liao))做集(ji)塵(chen)極,另一(yi)(yi)種是用通過噴水(shui)或溢流水(shui)形成導(dao)電(dian)(dian)水(shui)膜(mo),利用不導(dao)電(dian)(dian)的(de)非(fei)金屬材(cai)料(liao)(liao)做集(ji)塵(chen)極。
收塵原理
濕(shi)式(shi)(shi)電(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器(qi)和(he)與干(gan)式(shi)(shi)電(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器(qi)的(de)收塵(chen)(chen)(chen)(chen)(chen)原理相同(tong),都是靠高(gao)壓電(dian)暈(yun)放電(dian)使得粉塵(chen)(chen)(chen)(chen)(chen)荷電(dian),荷電(dian)后的(de)粉塵(chen)(chen)(chen)(chen)(chen)在電(dian)場力的(de)作用下(xia)到達(da)集(ji)塵(chen)(chen)(chen)(chen)(chen)板(ban)/管。干(gan)式(shi)(shi)電(dian)收塵(chen)(chen)(chen)(chen)(chen)器(qi)主(zhu)要(yao)處(chu)理含(han)水很低的(de)干(gan)氣體(ti),濕(shi)式(shi)(shi)電(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器(qi)主(zhu)要(yao)處(chu)理含(han)水較(jiao)高(gao)乃(nai)至飽和(he)的(de)濕(shi)氣體(ti)。在對集(ji)塵(chen)(chen)(chen)(chen)(chen)板(ban)/管上(shang)捕集(ji)到的(de)粉塵(chen)(chen)(chen)(chen)(chen)清除(chu)(chu)方式(shi)(shi)上(shang)WESP與DESP有較(jiao)大(da)區別,干(gan)式(shi)(shi)電(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器(qi)一般采(cai)用機(ji)械(xie)振(zhen)打或聲波清灰等方式(shi)(shi)清除(chu)(chu)電(dian)極上(shang)的(de)積灰,而(er)濕(shi)式(shi)(shi)電(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)器(qi)則采(cai)用定期沖(chong)(chong)洗的(de)方式(shi)(shi),使粉塵(chen)(chen)(chen)(chen)(chen)隨著沖(chong)(chong)刷液的(de)流動而(er)清除(chu)(chu)。