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)(dian)(dian)(dian)除塵器(qi)是(shi)(shi)以靜(jing)電(dian)(dian)(dian)(dian)(dian)凈(jing)化(hua)法來(lai)收捕廢氣(qi)(qi)(qi)中(zhong)的(de)(de)(de)(de)(de)粉(fen)塵,它的(de)(de)(de)(de)(de)凈(jing)化(hua)工作上要是(shi)(shi)依靠電(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)(ji)和沉(chen)淀兩(liang)個系統來(lai)完(wan)成(cheng)的(de)(de)(de)(de)(de),當含塵氣(qi)(qi)(qi)體(ti)(ti)進人(ren)(ren)氣(qi)(qi)(qi)刺叭時,含塵氣(qi)(qi)(qi)體(ti)(ti)受到氣(qi)(qi)(qi)流(liu)(liu)分布(bu)板以及折流(liu)(liu)板的(de)(de)(de)(de)(de)調(diao)整后,使氣(qi)(qi)(qi)流(liu)(liu)能較(jiao)均勻地進人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)。在(zai)橫(heng)斷面擴大的(de)(de)(de)(de)(de)作用下,氣(qi)(qi)(qi)流(liu)(liu)速(su)度迅(xun)速(su)降低,其中(zhong)有(you)些(xie)較(jiao)重的(de)(de)(de)(de)(de)塵粒(li)便失去速(su)度而沉(chen)降下來(lai)。進人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)(de)含塵氣(qi)(qi)(qi)體(ti)(ti)由于電(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)(ji)通(tong)人(ren)(ren)高壓(ya)直流(liu)(liu)電(dian)(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)(ji)附近產(chan)生(sheng)電(dian)(dian)(dian)(dian)(dian)暈現象,使氣(qi)(qi)(qi)體(ti)(ti)電(dian)(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)(dian)離后的(de)(de)(de)(de)(de)氣(qi)(qi)(qi)體(ti)(ti)中(zhong)存(cun)在(zai)大量的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)子(zi)和離子(zi),這些(xie)電(dian)(dian)(dian)(dian)(dian)子(zi)和離子(zi)與進人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)(de)粉(fen)塵結合起來(lai),使塵粒(li)帶(dai)電(dian)(dian)(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)(dian)(dian)塵粒(li)在(zai)電(dian)(dian)(dian)(dian)(dian)場(chang)力的(de)(de)(de)(de)(de)作用下趨向(xiang)本設備陽極(ji)(ji)(ji)(正極(ji)(ji)(ji)、本設備采用負高壓(ya)制)和陰(yin)極(ji)(ji)(ji)(負極(ji)(ji)(ji)) , 釋(shi)放出(chu)電(dian)(dian)(dian)(dian)(dian)子(zi)分別沉(chen)積在(zai)相應的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上,通(tong)過(guo)設備陰(yin)陽極(ji)(ji)(ji)振(zhen)打系統的(de)(de)(de)(de)(de)振(zhen)打,使沉(chen)積在(zai)陰(yin)陽電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上的(de)(de)(de)(de)(de)粉(fen)塵振(zhen)落,進人(ren)(ren)集灰(hui)斗 通(tong)過(guo)排灰(hui)裝置放出(chu),回(hui)收有(you)物(wu)料,被)凈(jing)化(hua)的(de)(de)(de)(de)(de)氣(qi)(qi)(qi)體(ti)(ti)排入大氣(qi)(qi)(qi)。
工作原理
靜電(dian)(dian)(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器的(de)(de)(de)工作(zuo)原(yuan)理是利用高壓電(dian)(dian)(dian)(dian)(dian)場使煙(yan)氣發生(sheng)電(dian)(dian)(dian)(dian)(dian)離,氣流(liu)(liu)中(zhong)的(de)(de)(de)粉塵(chen)(chen)(chen)(chen)荷電(dian)(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)(dian)場作(zuo)用下(xia)與氣流(liu)(liu)分離。負極(ji)由(you)不(bu)同斷面形(xing)狀(zhuang)的(de)(de)(de)金(jin)屬導(dao)線制(zhi)成,叫放電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)極(ji)。正(zheng)極(ji)由(you)不(bu)同幾何(he)形(xing)狀(zhuang)的(de)(de)(de)金(jin)屬板制(zhi)成,叫集塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)。靜電(dian)(dian)(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器的(de)(de)(de)性(xing)能受粉塵(chen)(chen)(chen)(chen)性(xing)質、設備構造和(he)煙(yan)氣流(liu)(liu)速(su)等三(san)個因素的(de)(de)(de)影響。粉塵(chen)(chen)(chen)(chen)的(de)(de)(de)比電(dian)(dian)(dian)(dian)(dian)阻是評價導(dao)電(dian)(dian)(dian)(dian)(dian)性(xing)的(de)(de)(de)指標,它對除(chu)(chu)塵(chen)(chen)(chen)(chen)效率有直接的(de)(de)(de)影響。比電(dian)(dian)(dian)(dian)(dian)阻過(guo)低(di),塵(chen)(chen)(chen)(chen)粒難以保持在(zai)集塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)上,致(zhi)使其重返(fan)氣流(liu)(liu)。比電(dian)(dian)(dian)(dian)(dian)阻過(guo)高,到達集塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)的(de)(de)(de)塵(chen)(chen)(chen)(chen)粒電(dian)(dian)(dian)(dian)(dian)荷不(bu)易放出,在(zai)塵(chen)(chen)(chen)(chen)層之間形(xing)成電(dian)(dian)(dian)(dian)(dian)壓梯(ti)度會(hui)(hui)產生(sheng)局部擊穿(chuan)和(he)放電(dian)(dian)(dian)(dian)(dian)現象。這些(xie)情(qing)況都會(hui)(hui)造成除(chu)(chu)塵(chen)(chen)(chen)(chen)效率下(xia)降。
電(dian)(dian)(dian)除塵(chen)(chen)(chen)器的(de)基本原理是利用電(dian)(dian)(dian)力捕集煙氣中的(de)粉塵(chen)(chen)(chen),主要包括以(yi)下(xia)四個(ge)相互有關的(de)物理過程: (1) 氣體的(de)電(dian)(dian)(dian)離(li)。(2) 粉塵(chen)(chen)(chen)的(de)荷電(dian)(dian)(dian)。(3) 荷電(dian)(dian)(dian)粉塵(chen)(chen)(chen)向電(dian)(dian)(dian)極移動(dong)。(4) 荷電(dian)(dian)(dian)粉塵(chen)(chen)(chen)的(de)捕集。