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。
臥式靜電(dian)(dian)除塵(chen)器是以靜電(dian)(dian)凈(jing)化(hua)(hua)法(fa)來收(shou)捕廢(fei)氣(qi)中(zhong)的(de)(de)(de)(de)粉(fen)塵(chen),它的(de)(de)(de)(de)凈(jing)化(hua)(hua)工作(zuo)上(shang)要是依靠電(dian)(dian)暈(yun)極(ji)(ji)和(he)沉(chen)(chen)淀兩個系(xi)統來完成的(de)(de)(de)(de),當含塵(chen)氣(qi)體進(jin)(jin)人(ren)氣(qi)刺叭時,含塵(chen)氣(qi)體受到氣(qi)流(liu)分(fen)布(bu)板以及折流(liu)板的(de)(de)(de)(de)調(diao)整后,使(shi)氣(qi)流(liu)能較均勻地進(jin)(jin)人(ren)電(dian)(dian)場。在(zai)橫(heng)斷面擴大的(de)(de)(de)(de)作(zuo)用下(xia),氣(qi)流(liu)速度(du)迅(xun)速降低,其中(zhong)有些較重的(de)(de)(de)(de)塵(chen)粒(li)便失去速度(du)而(er)沉(chen)(chen)降下(xia)來。進(jin)(jin)人(ren)電(dian)(dian)場的(de)(de)(de)(de)含塵(chen)氣(qi)體由于電(dian)(dian)暈(yun)極(ji)(ji)通(tong)(tong)人(ren)高(gao)壓直流(liu)電(dian)(dian),則在(zai)電(dian)(dian)暈(yun)極(ji)(ji)附近(jin)產生電(dian)(dian)暈(yun)現(xian)象,使(shi)氣(qi)體電(dian)(dian)離(li)(li),電(dian)(dian)離(li)(li)后的(de)(de)(de)(de)氣(qi)體中(zhong)存在(zai)大量的(de)(de)(de)(de)電(dian)(dian)子和(he)離(li)(li)子,這些電(dian)(dian)子和(he)離(li)(li)子與進(jin)(jin)人(ren)電(dian)(dian)場的(de)(de)(de)(de)粉(fen)塵(chen)結(jie)合起來,使(shi)塵(chen)粒(li)帶電(dian)(dian),帶電(dian)(dian)塵(chen)粒(li)在(zai)電(dian)(dian)場力的(de)(de)(de)(de)作(zuo)用下(xia)趨(qu)向本設備(bei)陽極(ji)(ji)(正極(ji)(ji)、本設備(bei)采用負(fu)高(gao)壓制)和(he)陰極(ji)(ji)(負(fu)極(ji)(ji)) , 釋放(fang)出電(dian)(dian)子分(fen)別沉(chen)(chen)積在(zai)相應的(de)(de)(de)(de)電(dian)(dian)極(ji)(ji)上(shang),通(tong)(tong)過設備(bei)陰陽極(ji)(ji)振打系(xi)統的(de)(de)(de)(de)振打,使(shi)沉(chen)(chen)積在(zai)陰陽電(dian)(dian)極(ji)(ji)上(shang)的(de)(de)(de)(de)粉(fen)塵(chen)振落,進(jin)(jin)人(ren)集灰(hui)斗 通(tong)(tong)過排灰(hui)裝置放(fang)出,回收(shou)有物料,被)凈(jing)化(hua)(hua)的(de)(de)(de)(de)氣(qi)體排入大氣(qi)。
工(gong)作原(yuan)理
靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)器的(de)(de)(de)工作(zuo)(zuo)原理是(shi)(shi)利用(yong)高(gao)壓(ya)(ya)電(dian)(dian)(dian)(dian)(dian)(dian)場使(shi)煙氣(qi)發生電(dian)(dian)(dian)(dian)(dian)(dian)離,氣(qi)流中的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)(chen)荷電(dian)(dian)(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)場作(zuo)(zuo)用(yong)下與氣(qi)流分(fen)離。負極(ji)由(you)不同斷面形狀的(de)(de)(de)金(jin)(jin)屬導(dao)線(xian)制成,叫放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)。正極(ji)由(you)不同幾何(he)形狀的(de)(de)(de)金(jin)(jin)屬板制成,叫集(ji)塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)。靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)器的(de)(de)(de)性(xing)能(neng)受粉(fen)塵(chen)(chen)(chen)(chen)(chen)性(xing)質、設(she)備構造和(he)煙氣(qi)流速等三個因素的(de)(de)(de)影(ying)響(xiang)。粉(fen)塵(chen)(chen)(chen)(chen)(chen)的(de)(de)(de)比(bi)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)是(shi)(shi)評價導(dao)電(dian)(dian)(dian)(dian)(dian)(dian)性(xing)的(de)(de)(de)指標(biao),它(ta)對除(chu)塵(chen)(chen)(chen)(chen)(chen)效(xiao)(xiao)率有直接的(de)(de)(de)影(ying)響(xiang)。比(bi)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)過低,塵(chen)(chen)(chen)(chen)(chen)粒難以保(bao)持在(zai)集(ji)塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)上,致(zhi)使(shi)其重返氣(qi)流。比(bi)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)過高(gao),到達集(ji)塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)的(de)(de)(de)塵(chen)(chen)(chen)(chen)(chen)粒電(dian)(dian)(dian)(dian)(dian)(dian)荷不易放(fang)出,在(zai)塵(chen)(chen)(chen)(chen)(chen)層(ceng)之間(jian)形成電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)梯(ti)度(du)會產(chan)生局部擊(ji)穿(chuan)和(he)放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)現象(xiang)。這些情況都會造成除(chu)塵(chen)(chen)(chen)(chen)(chen)效(xiao)(xiao)率下降。
電(dian)(dian)除塵(chen)器的(de)(de)(de)基本(ben)原理是利用電(dian)(dian)力捕(bu)集煙(yan)氣中的(de)(de)(de)粉塵(chen),主(zhu)要(yao)包括(kuo)以下四個相互有關的(de)(de)(de)物理過程: (1) 氣體(ti)(ti)的(de)(de)(de)電(dian)(dian)離。(2) 粉塵(chen)的(de)(de)(de)荷電(dian)(dian)。(3) 荷電(dian)(dian)粉塵(chen)向電(dian)(dian)極(ji)移動。(4) 荷電(dian)(dian)粉塵(chen)的(de)(de)(de)捕(bu)集。