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。
濕式電除塵(chen)器主(zhu)要(yao)有兩種(zhong)結構形(xing)式,一種(zhong)是(shi)使用(yong)耐腐(fu)蝕導(dao)電材(cai)(cai)料(可(ke)以(yi)為導(dao)電性(xing)能(neng)優良(liang)的(de)的(de)非金屬材(cai)(cai)料或具(ju)有耐腐(fu)蝕特性(xing)的(de)金屬材(cai)(cai)料)做(zuo)集塵(chen)極,另(ling)一種(zhong)是(shi)用(yong)通過(guo)噴水或溢流水形(xing)成導(dao)電水膜,利(li)用(yong)不導(dao)電的(de)非金屬材(cai)(cai)料做(zuo)集塵(chen)極。
收塵原理(li)
濕(shi)(shi)式(shi)(shi)(shi)(shi)電(dian)除塵(chen)(chen)(chen)(chen)器(qi)(qi)和與干(gan)式(shi)(shi)(shi)(shi)電(dian)除塵(chen)(chen)(chen)(chen)器(qi)(qi)的(de)(de)(de)收塵(chen)(chen)(chen)(chen)原理(li)相同,都是靠(kao)高壓電(dian)暈(yun)放電(dian)使得(de)粉(fen)(fen)塵(chen)(chen)(chen)(chen)荷(he)電(dian),荷(he)電(dian)后的(de)(de)(de)粉(fen)(fen)塵(chen)(chen)(chen)(chen)在(zai)電(dian)場力的(de)(de)(de)作用(yong)下到達(da)集(ji)塵(chen)(chen)(chen)(chen)板/管(guan)。干(gan)式(shi)(shi)(shi)(shi)電(dian)收塵(chen)(chen)(chen)(chen)器(qi)(qi)主要處理(li)含(han)水(shui)很低的(de)(de)(de)干(gan)氣(qi)(qi)體,濕(shi)(shi)式(shi)(shi)(shi)(shi)電(dian)除塵(chen)(chen)(chen)(chen)器(qi)(qi)主要處理(li)含(han)水(shui)較高乃(nai)至飽和的(de)(de)(de)濕(shi)(shi)氣(qi)(qi)體。在(zai)對(dui)集(ji)塵(chen)(chen)(chen)(chen)板/管(guan)上捕集(ji)到的(de)(de)(de)粉(fen)(fen)塵(chen)(chen)(chen)(chen)清除方(fang)式(shi)(shi)(shi)(shi)上WESP與DESP有較大區別(bie),干(gan)式(shi)(shi)(shi)(shi)電(dian)除塵(chen)(chen)(chen)(chen)器(qi)(qi)一般(ban)采(cai)用(yong)機械振打(da)或聲(sheng)波清灰(hui)等方(fang)式(shi)(shi)(shi)(shi)清除電(dian)極(ji)上的(de)(de)(de)積灰(hui),而濕(shi)(shi)式(shi)(shi)(shi)(shi)電(dian)除塵(chen)(chen)(chen)(chen)器(qi)(qi)則采(cai)用(yong)定(ding)期沖洗的(de)(de)(de)方(fang)式(shi)(shi)(shi)(shi),使粉(fen)(fen)塵(chen)(chen)(chen)(chen)隨著沖刷液的(de)(de)(de)流動而清除。