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)(dian)(dian)除塵(chen)器是(shi)以(yi)靜電(dian)(dian)(dian)(dian)凈化(hua)法來收捕(bu)廢氣(qi)(qi)(qi)(qi)中的(de)(de)(de)粉塵(chen),它的(de)(de)(de)凈化(hua)工作(zuo)上要(yao)是(shi)依靠電(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)極(ji)和(he)(he)沉淀兩個系(xi)統來完成的(de)(de)(de),當含(han)塵(chen)氣(qi)(qi)(qi)(qi)體(ti)(ti)進(jin)(jin)人(ren)(ren)氣(qi)(qi)(qi)(qi)刺(ci)叭(ba)時(shi),含(han)塵(chen)氣(qi)(qi)(qi)(qi)體(ti)(ti)受到氣(qi)(qi)(qi)(qi)流(liu)分(fen)布板以(yi)及折流(liu)板的(de)(de)(de)調(diao)整(zheng)后(hou),使(shi)(shi)氣(qi)(qi)(qi)(qi)流(liu)能(neng)較均勻地進(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)場。在(zai)橫斷(duan)面擴大的(de)(de)(de)作(zuo)用(yong)下,氣(qi)(qi)(qi)(qi)流(liu)速度迅速降低(di),其中有些較重的(de)(de)(de)塵(chen)粒(li)便(bian)失去速度而沉降下來。進(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)場的(de)(de)(de)含(han)塵(chen)氣(qi)(qi)(qi)(qi)體(ti)(ti)由于電(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)極(ji)通(tong)人(ren)(ren)高壓直流(liu)電(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)極(ji)附近產生(sheng)電(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)現象,使(shi)(shi)氣(qi)(qi)(qi)(qi)體(ti)(ti)電(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)離后(hou)的(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)(ti)中存在(zai)大量的(de)(de)(de)電(dian)(dian)(dian)(dian)子(zi)和(he)(he)離子(zi),這些電(dian)(dian)(dian)(dian)子(zi)和(he)(he)離子(zi)與(yu)進(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)場的(de)(de)(de)粉塵(chen)結(jie)合起來,使(shi)(shi)塵(chen)粒(li)帶(dai)電(dian)(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)(dian)塵(chen)粒(li)在(zai)電(dian)(dian)(dian)(dian)場力的(de)(de)(de)作(zuo)用(yong)下趨向本(ben)設備(bei)陽極(ji)(正極(ji)、本(ben)設備(bei)采(cai)用(yong)負高壓制(zhi))和(he)(he)陰極(ji)(負極(ji)) , 釋放出電(dian)(dian)(dian)(dian)子(zi)分(fen)別沉積(ji)在(zai)相應(ying)的(de)(de)(de)電(dian)(dian)(dian)(dian)極(ji)上,通(tong)過設備(bei)陰陽極(ji)振打(da)(da)系(xi)統的(de)(de)(de)振打(da)(da),使(shi)(shi)沉積(ji)在(zai)陰陽電(dian)(dian)(dian)(dian)極(ji)上的(de)(de)(de)粉塵(chen)振落,進(jin)(jin)人(ren)(ren)集灰斗 通(tong)過排灰裝置放出,回收有物料,被)凈化(hua)的(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)(ti)排入大氣(qi)(qi)(qi)(qi)。
工作原理(li)
靜電(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)(chen)器的(de)(de)(de)工作原理是利用(yong)高壓(ya)電(dian)(dian)(dian)(dian)場(chang)使(shi)煙氣發生電(dian)(dian)(dian)(dian)離(li),氣流中的(de)(de)(de)粉塵(chen)(chen)(chen)(chen)荷電(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)場(chang)作用(yong)下(xia)與氣流分(fen)離(li)。負極(ji)(ji)由不(bu)同斷面形(xing)狀的(de)(de)(de)金屬導線制成,叫放(fang)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極(ji)(ji)。正極(ji)(ji)由不(bu)同幾何形(xing)狀的(de)(de)(de)金屬板(ban)制成,叫集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)(ji)。靜電(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)(chen)器的(de)(de)(de)性(xing)能受(shou)粉塵(chen)(chen)(chen)(chen)性(xing)質、設備構造(zao)和(he)煙氣流速等三個因(yin)素的(de)(de)(de)影(ying)響。粉塵(chen)(chen)(chen)(chen)的(de)(de)(de)比(bi)電(dian)(dian)(dian)(dian)阻(zu)是評價(jia)導電(dian)(dian)(dian)(dian)性(xing)的(de)(de)(de)指標,它對除塵(chen)(chen)(chen)(chen)效(xiao)(xiao)率(lv)有直接的(de)(de)(de)影(ying)響。比(bi)電(dian)(dian)(dian)(dian)阻(zu)過(guo)低(di),塵(chen)(chen)(chen)(chen)粒難(nan)以保持在集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)(ji)上,致使(shi)其重返(fan)氣流。比(bi)電(dian)(dian)(dian)(dian)阻(zu)過(guo)高,到達集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)(ji)的(de)(de)(de)塵(chen)(chen)(chen)(chen)粒電(dian)(dian)(dian)(dian)荷不(bu)易(yi)放(fang)出,在塵(chen)(chen)(chen)(chen)層之間形(xing)成電(dian)(dian)(dian)(dian)壓(ya)梯(ti)度會產生局部擊穿(chuan)和(he)放(fang)電(dian)(dian)(dian)(dian)現象。這些情況都會造(zao)成除塵(chen)(chen)(chen)(chen)效(xiao)(xiao)率(lv)下(xia)降。
電(dian)除(chu)塵器的(de)(de)基本原理是利用電(dian)力捕集(ji)煙氣(qi)中的(de)(de)粉(fen)塵,主要包(bao)括(kuo)以下四個相互(hu)有關的(de)(de)物理過程(cheng): (1) 氣(qi)體的(de)(de)電(dian)離。(2) 粉(fen)塵的(de)(de)荷(he)電(dian)。(3) 荷(he)電(dian)粉(fen)塵向電(dian)極移(yi)動。(4) 荷(he)電(dian)粉(fen)塵的(de)(de)捕集(ji)。