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)(jing)電(dian)(dian)(dian)(dian)(dian)除塵(chen)器是以靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)凈化法來(lai)收捕廢氣(qi)中的(de)(de)(de)(de)(de)粉(fen)塵(chen),它的(de)(de)(de)(de)(de)凈化工作(zuo)上要(yao)是依靠電(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)(ji)和(he)(he)沉(chen)(chen)淀兩個系(xi)統(tong)來(lai)完成的(de)(de)(de)(de)(de),當含塵(chen)氣(qi)體(ti)進(jin)人(ren)氣(qi)刺叭時,含塵(chen)氣(qi)體(ti)受到氣(qi)流(liu)分布板以及折流(liu)板的(de)(de)(de)(de)(de)調(diao)整后,使(shi)(shi)(shi)氣(qi)流(liu)能(neng)較均勻地進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)。在橫斷面(mian)擴大的(de)(de)(de)(de)(de)作(zuo)用下(xia),氣(qi)流(liu)速(su)度迅(xun)速(su)降(jiang)(jiang)低,其(qi)中有(you)些較重(zhong)的(de)(de)(de)(de)(de)塵(chen)粒便失去速(su)度而(er)沉(chen)(chen)降(jiang)(jiang)下(xia)來(lai)。進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)(de)含塵(chen)氣(qi)體(ti)由于電(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)(ji)通人(ren)高(gao)壓直流(liu)電(dian)(dian)(dian)(dian)(dian),則在電(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)(ji)附近產生(sheng)電(dian)(dian)(dian)(dian)(dian)暈(yun)現象,使(shi)(shi)(shi)氣(qi)體(ti)電(dian)(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)(dian)離(li)后的(de)(de)(de)(de)(de)氣(qi)體(ti)中存在大量的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)和(he)(he)離(li)子(zi)(zi),這些電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)和(he)(he)離(li)子(zi)(zi)與進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)(de)粉(fen)塵(chen)結合起(qi)來(lai),使(shi)(shi)(shi)塵(chen)粒帶電(dian)(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)(dian)塵(chen)粒在電(dian)(dian)(dian)(dian)(dian)場(chang)力(li)的(de)(de)(de)(de)(de)作(zuo)用下(xia)趨(qu)向本設備(bei)陽(yang)極(ji)(ji)(ji)(ji)(正極(ji)(ji)(ji)(ji)、本設備(bei)采用負(fu)高(gao)壓制)和(he)(he)陰極(ji)(ji)(ji)(ji)(負(fu)極(ji)(ji)(ji)(ji)) , 釋放(fang)出電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)分別沉(chen)(chen)積在相應的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上,通過(guo)設備(bei)陰陽(yang)極(ji)(ji)(ji)(ji)振(zhen)(zhen)打系(xi)統(tong)的(de)(de)(de)(de)(de)振(zhen)(zhen)打,使(shi)(shi)(shi)沉(chen)(chen)積在陰陽(yang)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上的(de)(de)(de)(de)(de)粉(fen)塵(chen)振(zhen)(zhen)落,進(jin)人(ren)集灰斗 通過(guo)排(pai)灰裝置放(fang)出,回(hui)收有(you)物料,被)凈化的(de)(de)(de)(de)(de)氣(qi)體(ti)排(pai)入大氣(qi)。
工作原(yuan)理
靜(jing)電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器的工(gong)作原(yuan)理(li)是利(li)用高壓(ya)電(dian)(dian)場使(shi)煙氣(qi)發生電(dian)(dian)離,氣(qi)流中的粉(fen)塵(chen)(chen)(chen)(chen)荷(he)電(dian)(dian)在電(dian)(dian)場作用下(xia)與氣(qi)流分(fen)離。負極(ji)由(you)不(bu)同斷面形狀的金屬導(dao)線(xian)制成(cheng),叫(jiao)放(fang)電(dian)(dian)電(dian)(dian)極(ji)。正極(ji)由(you)不(bu)同幾何形狀的金屬板制成(cheng),叫(jiao)集塵(chen)(chen)(chen)(chen)電(dian)(dian)極(ji)。靜(jing)電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器的性能受粉(fen)塵(chen)(chen)(chen)(chen)性質、設備構造(zao)和(he)煙氣(qi)流速等三(san)個(ge)因素的影(ying)響(xiang)。粉(fen)塵(chen)(chen)(chen)(chen)的比電(dian)(dian)阻是評價導(dao)電(dian)(dian)性的指標,它(ta)對除(chu)塵(chen)(chen)(chen)(chen)效(xiao)率有直接的影(ying)響(xiang)。比電(dian)(dian)阻過(guo)低,塵(chen)(chen)(chen)(chen)粒難以保持在集塵(chen)(chen)(chen)(chen)電(dian)(dian)極(ji)上,致使(shi)其(qi)重返氣(qi)流。比電(dian)(dian)阻過(guo)高,到達集塵(chen)(chen)(chen)(chen)電(dian)(dian)極(ji)的塵(chen)(chen)(chen)(chen)粒電(dian)(dian)荷(he)不(bu)易放(fang)出,在塵(chen)(chen)(chen)(chen)層之間形成(cheng)電(dian)(dian)壓(ya)梯度會產(chan)生局部擊穿和(he)放(fang)電(dian)(dian)現(xian)象(xiang)。這些(xie)情況都會造(zao)成(cheng)除(chu)塵(chen)(chen)(chen)(chen)效(xiao)率下(xia)降。
電(dian)(dian)除塵(chen)器(qi)的基本原理(li)是利用電(dian)(dian)力捕集(ji)煙氣(qi)中的粉(fen)(fen)(fen)塵(chen),主要包括以下(xia)四個相互有關的物(wu)理(li)過程: (1) 氣(qi)體的電(dian)(dian)離(li)。(2) 粉(fen)(fen)(fen)塵(chen)的荷電(dian)(dian)。(3) 荷電(dian)(dian)粉(fen)(fen)(fen)塵(chen)向電(dian)(dian)極移動(dong)。(4) 荷電(dian)(dian)粉(fen)(fen)(fen)塵(chen)的捕集(ji)。