XWD型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)電(dian)(dian)(dian)除塵(chen)(chen)(chen)器是以靜(jing)電(dian)(dian)(dian)凈化法來(lai)收捕(bu)廢(fei)氣(qi)(qi)中的(de)(de)(de)(de)粉(fen)塵(chen)(chen)(chen),它(ta)的(de)(de)(de)(de)凈化工作上要(yao)是依靠(kao)電(dian)(dian)(dian)暈極(ji)(ji)(ji)和(he)沉淀兩(liang)個系統(tong)來(lai)完成的(de)(de)(de)(de),當含塵(chen)(chen)(chen)氣(qi)(qi)體(ti)(ti)進(jin)人(ren)氣(qi)(qi)刺(ci)叭(ba)時,含塵(chen)(chen)(chen)氣(qi)(qi)體(ti)(ti)受到氣(qi)(qi)流分布板(ban)以及折流板(ban)的(de)(de)(de)(de)調整后,使(shi)氣(qi)(qi)流能較(jiao)均勻地進(jin)人(ren)電(dian)(dian)(dian)場(chang)。在(zai)橫斷(duan)面擴大(da)的(de)(de)(de)(de)作用(yong)下(xia),氣(qi)(qi)流速度迅速降(jiang)低(di),其中有些(xie)較(jiao)重(zhong)的(de)(de)(de)(de)塵(chen)(chen)(chen)粒(li)(li)便失去速度而沉降(jiang)下(xia)來(lai)。進(jin)人(ren)電(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)含塵(chen)(chen)(chen)氣(qi)(qi)體(ti)(ti)由于電(dian)(dian)(dian)暈極(ji)(ji)(ji)通(tong)(tong)人(ren)高壓直流電(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)暈極(ji)(ji)(ji)附(fu)近產(chan)生電(dian)(dian)(dian)暈現象,使(shi)氣(qi)(qi)體(ti)(ti)電(dian)(dian)(dian)離(li)(li),電(dian)(dian)(dian)離(li)(li)后的(de)(de)(de)(de)氣(qi)(qi)體(ti)(ti)中存(cun)在(zai)大(da)量的(de)(de)(de)(de)電(dian)(dian)(dian)子(zi)(zi)和(he)離(li)(li)子(zi)(zi),這(zhe)些(xie)電(dian)(dian)(dian)子(zi)(zi)和(he)離(li)(li)子(zi)(zi)與進(jin)人(ren)電(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)粉(fen)塵(chen)(chen)(chen)結合起來(lai),使(shi)塵(chen)(chen)(chen)粒(li)(li)帶電(dian)(dian)(dian),帶電(dian)(dian)(dian)塵(chen)(chen)(chen)粒(li)(li)在(zai)電(dian)(dian)(dian)場(chang)力的(de)(de)(de)(de)作用(yong)下(xia)趨向(xiang)本設(she)備陽極(ji)(ji)(ji)(正(zheng)極(ji)(ji)(ji)、本設(she)備采用(yong)負(fu)高壓制(zhi))和(he)陰(yin)(yin)極(ji)(ji)(ji)(負(fu)極(ji)(ji)(ji)) , 釋放(fang)出電(dian)(dian)(dian)子(zi)(zi)分別沉積在(zai)相應(ying)的(de)(de)(de)(de)電(dian)(dian)(dian)極(ji)(ji)(ji)上,通(tong)(tong)過設(she)備陰(yin)(yin)陽極(ji)(ji)(ji)振(zhen)(zhen)打(da)系統(tong)的(de)(de)(de)(de)振(zhen)(zhen)打(da),使(shi)沉積在(zai)陰(yin)(yin)陽電(dian)(dian)(dian)極(ji)(ji)(ji)上的(de)(de)(de)(de)粉(fen)塵(chen)(chen)(chen)振(zhen)(zhen)落(luo),進(jin)人(ren)集灰(hui)斗 通(tong)(tong)過排(pai)灰(hui)裝置(zhi)放(fang)出,回收有物料,被)凈化的(de)(de)(de)(de)氣(qi)(qi)體(ti)(ti)排(pai)入(ru)大(da)氣(qi)(qi)。
工作原理(li)
靜(jing)電(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器的(de)工作原理(li)是利用高壓電(dian)(dian)(dian)場使煙氣發生電(dian)(dian)(dian)離,氣流中(zhong)的(de)粉(fen)塵(chen)(chen)(chen)(chen)荷電(dian)(dian)(dian)在電(dian)(dian)(dian)場作用下(xia)與(yu)氣流分(fen)離。負極(ji)由不(bu)同斷面形狀的(de)金屬(shu)(shu)導線(xian)制成,叫放(fang)電(dian)(dian)(dian)電(dian)(dian)(dian)極(ji)。正極(ji)由不(bu)同幾何形狀的(de)金屬(shu)(shu)板制成,叫集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)極(ji)。靜(jing)電(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器的(de)性能受粉(fen)塵(chen)(chen)(chen)(chen)性質、設備構(gou)造和(he)煙氣流速等三個因素的(de)影(ying)響(xiang)。粉(fen)塵(chen)(chen)(chen)(chen)的(de)比電(dian)(dian)(dian)阻(zu)(zu)是評價導電(dian)(dian)(dian)性的(de)指標,它對除(chu)(chu)塵(chen)(chen)(chen)(chen)效(xiao)率有直(zhi)接的(de)影(ying)響(xiang)。比電(dian)(dian)(dian)阻(zu)(zu)過(guo)低,塵(chen)(chen)(chen)(chen)粒難以保持在集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)極(ji)上,致使其重返氣流。比電(dian)(dian)(dian)阻(zu)(zu)過(guo)高,到達集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)極(ji)的(de)塵(chen)(chen)(chen)(chen)粒電(dian)(dian)(dian)荷不(bu)易放(fang)出(chu),在塵(chen)(chen)(chen)(chen)層之(zhi)間形成電(dian)(dian)(dian)壓梯度會(hui)產生局部擊穿和(he)放(fang)電(dian)(dian)(dian)現(xian)象(xiang)。這些情況(kuang)都會(hui)造成除(chu)(chu)塵(chen)(chen)(chen)(chen)效(xiao)率下(xia)降(jiang)。
電(dian)(dian)除(chu)塵(chen)器的基(ji)本(ben)原理是利用(yong)電(dian)(dian)力捕(bu)集煙氣中的粉塵(chen),主要包(bao)括以下四個相互有(you)關的物(wu)理過程: (1) 氣體的電(dian)(dian)離。(2) 粉塵(chen)的荷電(dian)(dian)。(3) 荷電(dian)(dian)粉塵(chen)向電(dian)(dian)極移(yi)動。(4) 荷電(dian)(dian)粉塵(chen)的捕(bu)集。