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(wo)式(shi)靜電(dian)(dian)(dian)除塵(chen)(chen)器是以(yi)靜電(dian)(dian)(dian)凈(jing)化(hua)(hua)(hua)法來收捕廢氣(qi)(qi)(qi)(qi)中的(de)粉(fen)塵(chen)(chen),它的(de)凈(jing)化(hua)(hua)(hua)工作上要是依靠(kao)電(dian)(dian)(dian)暈(yun)極(ji)和(he)沉淀(dian)兩(liang)個系(xi)統來完成(cheng)的(de),當含塵(chen)(chen)氣(qi)(qi)(qi)(qi)體(ti)進(jin)人(ren)(ren)氣(qi)(qi)(qi)(qi)刺(ci)叭時,含塵(chen)(chen)氣(qi)(qi)(qi)(qi)體(ti)受到氣(qi)(qi)(qi)(qi)流(liu)分布板以(yi)及(ji)折流(liu)板的(de)調整后(hou),使(shi)(shi)氣(qi)(qi)(qi)(qi)流(liu)能較均勻地進(jin)人(ren)(ren)電(dian)(dian)(dian)場(chang)。在橫斷面擴大(da)(da)的(de)作用下(xia)(xia),氣(qi)(qi)(qi)(qi)流(liu)速(su)度迅速(su)降低,其中有些(xie)(xie)較重的(de)塵(chen)(chen)粒(li)便失去(qu)速(su)度而沉降下(xia)(xia)來。進(jin)人(ren)(ren)電(dian)(dian)(dian)場(chang)的(de)含塵(chen)(chen)氣(qi)(qi)(qi)(qi)體(ti)由(you)于電(dian)(dian)(dian)暈(yun)極(ji)通人(ren)(ren)高壓直(zhi)流(liu)電(dian)(dian)(dian),則(ze)在電(dian)(dian)(dian)暈(yun)極(ji)附近產生電(dian)(dian)(dian)暈(yun)現象,使(shi)(shi)氣(qi)(qi)(qi)(qi)體(ti)電(dian)(dian)(dian)離(li),電(dian)(dian)(dian)離(li)后(hou)的(de)氣(qi)(qi)(qi)(qi)體(ti)中存在大(da)(da)量的(de)電(dian)(dian)(dian)子和(he)離(li)子,這些(xie)(xie)電(dian)(dian)(dian)子和(he)離(li)子與進(jin)人(ren)(ren)電(dian)(dian)(dian)場(chang)的(de)粉(fen)塵(chen)(chen)結合起來,使(shi)(shi)塵(chen)(chen)粒(li)帶電(dian)(dian)(dian),帶電(dian)(dian)(dian)塵(chen)(chen)粒(li)在電(dian)(dian)(dian)場(chang)力的(de)作用下(xia)(xia)趨向本(ben)設(she)備陽極(ji)(正極(ji)、本(ben)設(she)備采用負高壓制)和(he)陰極(ji)(負極(ji)) , 釋(shi)放(fang)出(chu)電(dian)(dian)(dian)子分別沉積在相應的(de)電(dian)(dian)(dian)極(ji)上,通過(guo)設(she)備陰陽極(ji)振打(da)系(xi)統的(de)振打(da),使(shi)(shi)沉積在陰陽電(dian)(dian)(dian)極(ji)上的(de)粉(fen)塵(chen)(chen)振落(luo),進(jin)人(ren)(ren)集(ji)灰斗 通過(guo)排灰裝置放(fang)出(chu),回收有物料,被)凈(jing)化(hua)(hua)(hua)的(de)氣(qi)(qi)(qi)(qi)體(ti)排入大(da)(da)氣(qi)(qi)(qi)(qi)。
工作(zuo)原理
靜(jing)電(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)的(de)(de)工作(zuo)(zuo)原理(li)是(shi)利(li)用高壓(ya)電(dian)(dian)場(chang)使煙(yan)(yan)氣發生電(dian)(dian)離(li),氣流(liu)中的(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)荷(he)電(dian)(dian)在(zai)電(dian)(dian)場(chang)作(zuo)(zuo)用下與氣流(liu)分離(li)。負極(ji)(ji)由(you)不(bu)同斷面形狀(zhuang)(zhuang)的(de)(de)金屬(shu)導線制(zhi)成(cheng),叫放電(dian)(dian)電(dian)(dian)極(ji)(ji)。正極(ji)(ji)由(you)不(bu)同幾何形狀(zhuang)(zhuang)的(de)(de)金屬(shu)板(ban)制(zhi)成(cheng),叫集塵(chen)(chen)(chen)(chen)電(dian)(dian)極(ji)(ji)。靜(jing)電(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器(qi)的(de)(de)性(xing)能受粉(fen)塵(chen)(chen)(chen)(chen)性(xing)質、設(she)備構造(zao)(zao)和煙(yan)(yan)氣流(liu)速等三個因(yin)素的(de)(de)影響(xiang)。粉(fen)塵(chen)(chen)(chen)(chen)的(de)(de)比電(dian)(dian)阻(zu)是(shi)評(ping)價導電(dian)(dian)性(xing)的(de)(de)指(zhi)標,它對除(chu)(chu)塵(chen)(chen)(chen)(chen)效率(lv)有直接的(de)(de)影響(xiang)。比電(dian)(dian)阻(zu)過低,塵(chen)(chen)(chen)(chen)粒(li)難以保持在(zai)集塵(chen)(chen)(chen)(chen)電(dian)(dian)極(ji)(ji)上,致使其重返氣流(liu)。比電(dian)(dian)阻(zu)過高,到達(da)集塵(chen)(chen)(chen)(chen)電(dian)(dian)極(ji)(ji)的(de)(de)塵(chen)(chen)(chen)(chen)粒(li)電(dian)(dian)荷(he)不(bu)易放出,在(zai)塵(chen)(chen)(chen)(chen)層之間形成(cheng)電(dian)(dian)壓(ya)梯度會(hui)產生局部擊穿和放電(dian)(dian)現象。這些情況(kuang)都(dou)會(hui)造(zao)(zao)成(cheng)除(chu)(chu)塵(chen)(chen)(chen)(chen)效率(lv)下降。
電除塵(chen)(chen)器的(de)(de)基(ji)本(ben)原理(li)(li)是利(li)用(yong)電力捕(bu)集煙(yan)氣中的(de)(de)粉(fen)塵(chen)(chen),主(zhu)要包括以下(xia)四(si)個(ge)相(xiang)互有關(guan)的(de)(de)物理(li)(li)過程: (1) 氣體的(de)(de)電離。(2) 粉(fen)塵(chen)(chen)的(de)(de)荷電。(3) 荷電粉(fen)塵(chen)(chen)向(xiang)電極(ji)移動。(4) 荷電粉(fen)塵(chen)(chen)的(de)(de)捕(bu)集。