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(shi)靜電(dian)(dian)(dian)(dian)(dian)(dian)除塵器是以靜電(dian)(dian)(dian)(dian)(dian)(dian)凈(jing)化(hua)法來收(shou)捕(bu)廢氣中(zhong)的(de)粉塵,它的(de)凈(jing)化(hua)工作(zuo)上(shang)要是依靠(kao)電(dian)(dian)(dian)(dian)(dian)(dian)暈極和(he)沉淀兩個系(xi)統(tong)來完成的(de),當含塵氣體(ti)(ti)進(jin)人(ren)(ren)氣刺叭(ba)時,含塵氣體(ti)(ti)受到(dao)氣流(liu)(liu)分(fen)布(bu)板以及折流(liu)(liu)板的(de)調整后,使(shi)(shi)氣流(liu)(liu)能較(jiao)均勻地進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)。在(zai)(zai)橫斷面擴大(da)(da)的(de)作(zuo)用(yong)下(xia)(xia),氣流(liu)(liu)速(su)(su)度(du)迅速(su)(su)降低,其中(zhong)有(you)些(xie)較(jiao)重(zhong)的(de)塵粒便(bian)失去(qu)速(su)(su)度(du)而沉降下(xia)(xia)來。進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)的(de)含塵氣體(ti)(ti)由于電(dian)(dian)(dian)(dian)(dian)(dian)暈極通人(ren)(ren)高壓(ya)直流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian),則(ze)在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)暈極附近產生電(dian)(dian)(dian)(dian)(dian)(dian)暈現象,使(shi)(shi)氣體(ti)(ti)電(dian)(dian)(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)(dian)(dian)離(li)后的(de)氣體(ti)(ti)中(zhong)存在(zai)(zai)大(da)(da)量的(de)電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)(zi)和(he)離(li)子(zi)(zi)(zi),這(zhe)些(xie)電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)(zi)和(he)離(li)子(zi)(zi)(zi)與進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)的(de)粉塵結合起來,使(shi)(shi)塵粒帶電(dian)(dian)(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)(dian)(dian)塵粒在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)力的(de)作(zuo)用(yong)下(xia)(xia)趨向本設備陽極(正(zheng)極、本設備采用(yong)負高壓(ya)制(zhi))和(he)陰(yin)極(負極) , 釋放出(chu)電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)(zi)分(fen)別沉積(ji)在(zai)(zai)相應(ying)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)極上(shang),通過設備陰(yin)陽極振打系(xi)統(tong)的(de)振打,使(shi)(shi)沉積(ji)在(zai)(zai)陰(yin)陽電(dian)(dian)(dian)(dian)(dian)(dian)極上(shang)的(de)粉塵振落,進(jin)人(ren)(ren)集灰斗(dou) 通過排灰裝(zhuang)置放出(chu),回收(shou)有(you)物料,被)凈(jing)化(hua)的(de)氣體(ti)(ti)排入大(da)(da)氣。
工作原理
靜電(dian)(dian)除(chu)塵(chen)(chen)器的(de)(de)工作(zuo)原(yuan)理(li)是利用(yong)高壓(ya)電(dian)(dian)場使煙氣(qi)發(fa)生電(dian)(dian)離,氣(qi)流(liu)中的(de)(de)粉塵(chen)(chen)荷電(dian)(dian)在(zai)電(dian)(dian)場作(zuo)用(yong)下與氣(qi)流(liu)分離。負極(ji)由不同斷(duan)面形狀(zhuang)的(de)(de)金屬導(dao)線制成,叫放(fang)電(dian)(dian)電(dian)(dian)極(ji)。正極(ji)由不同幾何形狀(zhuang)的(de)(de)金屬板制成,叫集(ji)塵(chen)(chen)電(dian)(dian)極(ji)。靜電(dian)(dian)除(chu)塵(chen)(chen)器的(de)(de)性(xing)能受粉塵(chen)(chen)性(xing)質、設備構造和煙氣(qi)流(liu)速(su)等(deng)三個因素的(de)(de)影響(xiang)。粉塵(chen)(chen)的(de)(de)比(bi)電(dian)(dian)阻是評價(jia)導(dao)電(dian)(dian)性(xing)的(de)(de)指標,它(ta)對除(chu)塵(chen)(chen)效率(lv)有直接的(de)(de)影響(xiang)。比(bi)電(dian)(dian)阻過(guo)(guo)低,塵(chen)(chen)粒難以(yi)保持在(zai)集(ji)塵(chen)(chen)電(dian)(dian)極(ji)上,致(zhi)使其(qi)重(zhong)返氣(qi)流(liu)。比(bi)電(dian)(dian)阻過(guo)(guo)高,到達(da)集(ji)塵(chen)(chen)電(dian)(dian)極(ji)的(de)(de)塵(chen)(chen)粒電(dian)(dian)荷不易放(fang)出,在(zai)塵(chen)(chen)層之間形成電(dian)(dian)壓(ya)梯(ti)度會產生局部擊穿和放(fang)電(dian)(dian)現象(xiang)。這些情(qing)況都會造成除(chu)塵(chen)(chen)效率(lv)下降。
電(dian)(dian)除塵(chen)器的(de)基(ji)本原理是利用電(dian)(dian)力捕集煙氣(qi)中的(de)粉(fen)塵(chen),主要包括以(yi)下四個相互有關的(de)物理過程(cheng): (1) 氣(qi)體(ti)的(de)電(dian)(dian)離。(2) 粉(fen)塵(chen)的(de)荷(he)電(dian)(dian)。(3) 荷(he)電(dian)(dian)粉(fen)塵(chen)向(xiang)電(dian)(dian)極(ji)移動。(4) 荷(he)電(dian)(dian)粉(fen)塵(chen)的(de)捕集。