臥式靜電除塵器是眾多除塵器當中的一種,臥式靜電除塵器是以靜電凈化法來收捕廢氣中的粉塵的設備,其主要是讓含塵氣體進人氣刺叭時,含塵氣體受到氣流分布板以及折流板的調整后,使氣流能較均勻地進人電場。
臥式靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)除塵(chen)器是以(yi)靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)凈(jing)化(hua)法來(lai)(lai)收捕(bu)廢氣(qi)(qi)中(zhong)的(de)(de)粉塵(chen),它(ta)的(de)(de)凈(jing)化(hua)工作上(shang)要是依靠電(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)和沉淀兩個系(xi)(xi)統(tong)來(lai)(lai)完成的(de)(de),當含塵(chen)氣(qi)(qi)體(ti)(ti)進(jin)人(ren)(ren)氣(qi)(qi)刺(ci)叭時,含塵(chen)氣(qi)(qi)體(ti)(ti)受到氣(qi)(qi)流(liu)分(fen)布板以(yi)及折流(liu)板的(de)(de)調整后(hou),使(shi)氣(qi)(qi)流(liu)能(neng)較均勻地進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場。在橫斷(duan)面(mian)擴大的(de)(de)作用下,氣(qi)(qi)流(liu)速度(du)迅速降低,其(qi)中(zhong)有些較重(zhong)的(de)(de)塵(chen)粒(li)便(bian)失去(qu)速度(du)而沉降下來(lai)(lai)。進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場的(de)(de)含塵(chen)氣(qi)(qi)體(ti)(ti)由于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)通(tong)(tong)人(ren)(ren)高壓(ya)直流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian),則(ze)在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)附近產生(sheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈現象(xiang),使(shi)氣(qi)(qi)體(ti)(ti)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)(dian)(dian)(dian)離(li)后(hou)的(de)(de)氣(qi)(qi)體(ti)(ti)中(zhong)存在大量(liang)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子和離(li)子,這些電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子和離(li)子與(yu)進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場的(de)(de)粉塵(chen)結合起來(lai)(lai),使(shi)塵(chen)粒(li)帶電(dian)(dian)(dian)(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)(dian)(dian)(dian)塵(chen)粒(li)在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場力的(de)(de)作用下趨向本設備(bei)陽(yang)極(ji)(ji)(正極(ji)(ji)、本設備(bei)采用負(fu)高壓(ya)制)和陰(yin)(yin)極(ji)(ji)(負(fu)極(ji)(ji)) , 釋放出電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子分(fen)別沉積(ji)在相(xiang)應的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上(shang),通(tong)(tong)過設備(bei)陰(yin)(yin)陽(yang)極(ji)(ji)振打系(xi)(xi)統(tong)的(de)(de)振打,使(shi)沉積(ji)在陰(yin)(yin)陽(yang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上(shang)的(de)(de)粉塵(chen)振落,進(jin)人(ren)(ren)集灰斗 通(tong)(tong)過排灰裝(zhuang)置放出,回(hui)收有物料,被)凈(jing)化(hua)的(de)(de)氣(qi)(qi)體(ti)(ti)排入(ru)大氣(qi)(qi)。
工作原理
靜電(dian)(dian)(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器的(de)工作(zuo)原理是(shi)利(li)用高壓(ya)電(dian)(dian)(dian)(dian)(dian)場使煙(yan)氣發生電(dian)(dian)(dian)(dian)(dian)離,氣流(liu)中的(de)粉(fen)塵(chen)(chen)(chen)(chen)荷(he)電(dian)(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)(dian)場作(zuo)用下與氣流(liu)分離。負極由(you)不同(tong)斷(duan)面形狀(zhuang)的(de)金屬(shu)導(dao)線制成,叫放(fang)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)極。正極由(you)不同(tong)幾何形狀(zhuang)的(de)金屬(shu)板制成,叫集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)極。靜電(dian)(dian)(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器的(de)性能受(shou)粉(fen)塵(chen)(chen)(chen)(chen)性質、設(she)備構造(zao)和(he)煙(yan)氣流(liu)速等(deng)三個因素的(de)影響。粉(fen)塵(chen)(chen)(chen)(chen)的(de)比電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)是(shi)評價(jia)導(dao)電(dian)(dian)(dian)(dian)(dian)性的(de)指(zhi)標,它對除(chu)(chu)塵(chen)(chen)(chen)(chen)效率有直(zhi)接的(de)影響。比電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)過低,塵(chen)(chen)(chen)(chen)粒難(nan)以(yi)保持在集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)極上,致使其重(zhong)返氣流(liu)。比電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)過高,到達(da)集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)極的(de)塵(chen)(chen)(chen)(chen)粒電(dian)(dian)(dian)(dian)(dian)荷(he)不易放(fang)出,在塵(chen)(chen)(chen)(chen)層之間形成電(dian)(dian)(dian)(dian)(dian)壓(ya)梯度會產(chan)生局部擊穿和(he)放(fang)電(dian)(dian)(dian)(dian)(dian)現象(xiang)。這些情況都(dou)會造(zao)成除(chu)(chu)塵(chen)(chen)(chen)(chen)效率下降。
電(dian)除塵(chen)器的(de)(de)基本原理是利(li)用電(dian)力(li)捕集煙(yan)氣(qi)中的(de)(de)粉(fen)塵(chen),主(zhu)要包括以(yi)下(xia)四個相互有關的(de)(de)物(wu)理過程(cheng): (1) 氣(qi)體的(de)(de)電(dian)離。(2) 粉(fen)塵(chen)的(de)(de)荷電(dian)。(3) 荷電(dian)粉(fen)塵(chen)向電(dian)極移動。(4) 荷電(dian)粉(fen)塵(chen)的(de)(de)捕集。