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)器主要有兩種結構形(xing)式,一種是(shi)使(shi)用(yong)(yong)耐腐(fu)蝕(shi)導(dao)電(dian)(dian)材(cai)(cai)(cai)料(可以(yi)為導(dao)電(dian)(dian)性能優良(liang)的(de)的(de)非金屬材(cai)(cai)(cai)料或具有耐腐(fu)蝕(shi)特性的(de)金屬材(cai)(cai)(cai)料)做集塵(chen)極,另(ling)一種是(shi)用(yong)(yong)通過噴水或溢流水形(xing)成(cheng)導(dao)電(dian)(dian)水膜,利用(yong)(yong)不導(dao)電(dian)(dian)的(de)非金屬材(cai)(cai)(cai)料做集塵(chen)極。
收塵(chen)原(yuan)理
濕式電(dian)(dian)(dian)除(chu)塵(chen)(chen)器(qi)和與干(gan)(gan)式電(dian)(dian)(dian)除(chu)塵(chen)(chen)器(qi)的(de)(de)收(shou)塵(chen)(chen)原理(li)相同,都是(shi)靠高(gao)壓電(dian)(dian)(dian)暈放電(dian)(dian)(dian)使得粉(fen)(fen)塵(chen)(chen)荷(he)電(dian)(dian)(dian),荷(he)電(dian)(dian)(dian)后的(de)(de)粉(fen)(fen)塵(chen)(chen)在電(dian)(dian)(dian)場(chang)力的(de)(de)作用(yong)下(xia)到(dao)達集塵(chen)(chen)板/管。干(gan)(gan)式電(dian)(dian)(dian)收(shou)塵(chen)(chen)器(qi)主(zhu)要(yao)處(chu)理(li)含(han)水很(hen)低的(de)(de)干(gan)(gan)氣體,濕式電(dian)(dian)(dian)除(chu)塵(chen)(chen)器(qi)主(zhu)要(yao)處(chu)理(li)含(han)水較(jiao)高(gao)乃至飽和的(de)(de)濕氣體。在對集塵(chen)(chen)板/管上(shang)(shang)捕集到(dao)的(de)(de)粉(fen)(fen)塵(chen)(chen)清(qing)除(chu)方(fang)式上(shang)(shang)WESP與DESP有較(jiao)大區別,干(gan)(gan)式電(dian)(dian)(dian)除(chu)塵(chen)(chen)器(qi)一般采(cai)用(yong)機械振打或聲波清(qing)灰等方(fang)式清(qing)除(chu)電(dian)(dian)(dian)極上(shang)(shang)的(de)(de)積灰,而(er)濕式電(dian)(dian)(dian)除(chu)塵(chen)(chen)器(qi)則采(cai)用(yong)定(ding)期(qi)沖洗的(de)(de)方(fang)式,使粉(fen)(fen)塵(chen)(chen)隨著沖刷液的(de)(de)流(liu)動(dong)而(er)清(qing)除(chu)。