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)除塵(chen)(chen)器是(shi)以靜(jing)電(dian)(dian)凈化法(fa)來(lai)(lai)收(shou)捕(bu)廢氣(qi)中(zhong)的(de)(de)粉塵(chen)(chen),它(ta)的(de)(de)凈化工(gong)作(zuo)上(shang)要是(shi)依(yi)靠電(dian)(dian)暈極(ji)和沉(chen)淀兩個系(xi)統(tong)來(lai)(lai)完成的(de)(de),當(dang)含塵(chen)(chen)氣(qi)體(ti)(ti)進(jin)人氣(qi)刺叭時,含塵(chen)(chen)氣(qi)體(ti)(ti)受到氣(qi)流(liu)分布板以及折流(liu)板的(de)(de)調整后,使氣(qi)流(liu)能較均勻地進(jin)人電(dian)(dian)場(chang)。在(zai)(zai)橫斷面擴大的(de)(de)作(zuo)用(yong)下,氣(qi)流(liu)速(su)度迅(xun)速(su)降低(di),其中(zhong)有(you)些(xie)較重(zhong)的(de)(de)塵(chen)(chen)粒(li)(li)便失去速(su)度而(er)沉(chen)降下來(lai)(lai)。進(jin)人電(dian)(dian)場(chang)的(de)(de)含塵(chen)(chen)氣(qi)體(ti)(ti)由于(yu)電(dian)(dian)暈極(ji)通人高(gao)壓直(zhi)流(liu)電(dian)(dian),則在(zai)(zai)電(dian)(dian)暈極(ji)附(fu)近產生電(dian)(dian)暈現象,使氣(qi)體(ti)(ti)電(dian)(dian)離,電(dian)(dian)離后的(de)(de)氣(qi)體(ti)(ti)中(zhong)存在(zai)(zai)大量的(de)(de)電(dian)(dian)子(zi)(zi)(zi)和離子(zi)(zi)(zi),這(zhe)些(xie)電(dian)(dian)子(zi)(zi)(zi)和離子(zi)(zi)(zi)與進(jin)人電(dian)(dian)場(chang)的(de)(de)粉塵(chen)(chen)結(jie)合起來(lai)(lai),使塵(chen)(chen)粒(li)(li)帶(dai)電(dian)(dian),帶(dai)電(dian)(dian)塵(chen)(chen)粒(li)(li)在(zai)(zai)電(dian)(dian)場(chang)力的(de)(de)作(zuo)用(yong)下趨向本設(she)備陽(yang)(yang)極(ji)(正(zheng)極(ji)、本設(she)備采(cai)用(yong)負(fu)高(gao)壓制)和陰(yin)(yin)極(ji)(負(fu)極(ji)) , 釋放出電(dian)(dian)子(zi)(zi)(zi)分別沉(chen)積在(zai)(zai)相應的(de)(de)電(dian)(dian)極(ji)上(shang),通過設(she)備陰(yin)(yin)陽(yang)(yang)極(ji)振打系(xi)統(tong)的(de)(de)振打,使沉(chen)積在(zai)(zai)陰(yin)(yin)陽(yang)(yang)電(dian)(dian)極(ji)上(shang)的(de)(de)粉塵(chen)(chen)振落,進(jin)人集灰斗 通過排(pai)灰裝置放出,回收(shou)有(you)物料,被)凈化的(de)(de)氣(qi)體(ti)(ti)排(pai)入(ru)大氣(qi)。
工作原理
靜(jing)電(dian)(dian)除塵(chen)(chen)(chen)(chen)器(qi)的(de)工作(zuo)原(yuan)理(li)是(shi)利用(yong)高壓電(dian)(dian)場使煙(yan)氣發生電(dian)(dian)離,氣流中的(de)粉塵(chen)(chen)(chen)(chen)荷(he)電(dian)(dian)在(zai)電(dian)(dian)場作(zuo)用(yong)下與氣流分(fen)離。負極(ji)(ji)由不(bu)同斷面形(xing)狀的(de)金屬(shu)導線制成(cheng)(cheng),叫放電(dian)(dian)電(dian)(dian)極(ji)(ji)。正極(ji)(ji)由不(bu)同幾何形(xing)狀的(de)金屬(shu)板制成(cheng)(cheng),叫集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)極(ji)(ji)。靜(jing)電(dian)(dian)除塵(chen)(chen)(chen)(chen)器(qi)的(de)性(xing)能受粉塵(chen)(chen)(chen)(chen)性(xing)質、設備構(gou)造和煙(yan)氣流速等三個(ge)因素的(de)影響(xiang)。粉塵(chen)(chen)(chen)(chen)的(de)比(bi)(bi)電(dian)(dian)阻(zu)是(shi)評價(jia)導電(dian)(dian)性(xing)的(de)指標,它對除塵(chen)(chen)(chen)(chen)效(xiao)(xiao)率有直接的(de)影響(xiang)。比(bi)(bi)電(dian)(dian)阻(zu)過(guo)低,塵(chen)(chen)(chen)(chen)粒難以保持在(zai)集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)極(ji)(ji)上,致(zhi)使其重(zhong)返氣流。比(bi)(bi)電(dian)(dian)阻(zu)過(guo)高,到達(da)集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)極(ji)(ji)的(de)塵(chen)(chen)(chen)(chen)粒電(dian)(dian)荷(he)不(bu)易(yi)放出,在(zai)塵(chen)(chen)(chen)(chen)層(ceng)之間(jian)形(xing)成(cheng)(cheng)電(dian)(dian)壓梯度會(hui)(hui)產生局部擊穿(chuan)和放電(dian)(dian)現象(xiang)。這些情(qing)況都會(hui)(hui)造成(cheng)(cheng)除塵(chen)(chen)(chen)(chen)效(xiao)(xiao)率下降。
電除塵器的(de)(de)(de)基本原理(li)是利用電力捕集煙氣(qi)(qi)中(zhong)的(de)(de)(de)粉(fen)(fen)塵,主要包括以下(xia)四個相互有關(guan)的(de)(de)(de)物理(li)過程: (1) 氣(qi)(qi)體(ti)的(de)(de)(de)電離。(2) 粉(fen)(fen)塵的(de)(de)(de)荷(he)電。(3) 荷(he)電粉(fen)(fen)塵向電極移動(dong)。(4) 荷(he)電粉(fen)(fen)塵的(de)(de)(de)捕集。