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)(chen)器是(shi)以靜電(dian)(dian)(dian)(dian)凈化法來(lai)收(shou)捕廢氣(qi)(qi)中(zhong)的(de)(de)(de)(de)(de)(de)粉(fen)塵(chen)(chen),它(ta)的(de)(de)(de)(de)(de)(de)凈化工作上(shang)要是(shi)依靠電(dian)(dian)(dian)(dian)暈極(ji)(ji)和沉淀兩(liang)個系統來(lai)完(wan)成的(de)(de)(de)(de)(de)(de),當含塵(chen)(chen)氣(qi)(qi)體(ti)(ti)(ti)進(jin)人氣(qi)(qi)刺叭時,含塵(chen)(chen)氣(qi)(qi)體(ti)(ti)(ti)受到氣(qi)(qi)流分(fen)布板(ban)以及折(zhe)流板(ban)的(de)(de)(de)(de)(de)(de)調整后,使氣(qi)(qi)流能(neng)較均(jun)勻地進(jin)人電(dian)(dian)(dian)(dian)場。在(zai)(zai)橫(heng)斷(duan)面擴大(da)的(de)(de)(de)(de)(de)(de)作用(yong)下(xia),氣(qi)(qi)流速(su)度迅速(su)降(jiang)低,其中(zhong)有些(xie)較重(zhong)的(de)(de)(de)(de)(de)(de)塵(chen)(chen)粒便失去速(su)度而沉降(jiang)下(xia)來(lai)。進(jin)人電(dian)(dian)(dian)(dian)場的(de)(de)(de)(de)(de)(de)含塵(chen)(chen)氣(qi)(qi)體(ti)(ti)(ti)由于電(dian)(dian)(dian)(dian)暈極(ji)(ji)通人高(gao)壓直(zhi)流電(dian)(dian)(dian)(dian),則在(zai)(zai)電(dian)(dian)(dian)(dian)暈極(ji)(ji)附近產生電(dian)(dian)(dian)(dian)暈現象(xiang),使氣(qi)(qi)體(ti)(ti)(ti)電(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)離后的(de)(de)(de)(de)(de)(de)氣(qi)(qi)體(ti)(ti)(ti)中(zhong)存在(zai)(zai)大(da)量的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)子和離子,這些(xie)電(dian)(dian)(dian)(dian)子和離子與進(jin)人電(dian)(dian)(dian)(dian)場的(de)(de)(de)(de)(de)(de)粉(fen)塵(chen)(chen)結合(he)起來(lai),使塵(chen)(chen)粒帶電(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)塵(chen)(chen)粒在(zai)(zai)電(dian)(dian)(dian)(dian)場力的(de)(de)(de)(de)(de)(de)作用(yong)下(xia)趨(qu)向本設備(bei)陽極(ji)(ji)(正極(ji)(ji)、本設備(bei)采用(yong)負(fu)高(gao)壓制)和陰(yin)(yin)(yin)極(ji)(ji)(負(fu)極(ji)(ji)) , 釋(shi)放(fang)出(chu)電(dian)(dian)(dian)(dian)子分(fen)別沉積在(zai)(zai)相(xiang)應的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)極(ji)(ji)上(shang),通過(guo)設備(bei)陰(yin)(yin)(yin)陽極(ji)(ji)振打(da)系統的(de)(de)(de)(de)(de)(de)振打(da),使沉積在(zai)(zai)陰(yin)(yin)(yin)陽電(dian)(dian)(dian)(dian)極(ji)(ji)上(shang)的(de)(de)(de)(de)(de)(de)粉(fen)塵(chen)(chen)振落,進(jin)人集灰斗 通過(guo)排灰裝置放(fang)出(chu),回收(shou)有物料,被)凈化的(de)(de)(de)(de)(de)(de)氣(qi)(qi)體(ti)(ti)(ti)排入大(da)氣(qi)(qi)。
工(gong)作原(yuan)理
靜電(dian)(dian)除(chu)塵(chen)器的(de)(de)(de)(de)工作原理(li)是利用高(gao)(gao)壓電(dian)(dian)場(chang)(chang)使煙氣(qi)發生電(dian)(dian)離,氣(qi)流中的(de)(de)(de)(de)粉塵(chen)荷(he)電(dian)(dian)在電(dian)(dian)場(chang)(chang)作用下與氣(qi)流分離。負極(ji)(ji)由(you)不(bu)(bu)同斷面形(xing)狀(zhuang)的(de)(de)(de)(de)金屬(shu)導線制成,叫放電(dian)(dian)電(dian)(dian)極(ji)(ji)。正極(ji)(ji)由(you)不(bu)(bu)同幾何形(xing)狀(zhuang)的(de)(de)(de)(de)金屬(shu)板制成,叫集塵(chen)電(dian)(dian)極(ji)(ji)。靜電(dian)(dian)除(chu)塵(chen)器的(de)(de)(de)(de)性能(neng)受粉塵(chen)性質、設備構造和煙氣(qi)流速等三個因(yin)素的(de)(de)(de)(de)影響(xiang)(xiang)。粉塵(chen)的(de)(de)(de)(de)比電(dian)(dian)阻是評價(jia)導電(dian)(dian)性的(de)(de)(de)(de)指標,它對除(chu)塵(chen)效(xiao)率有直(zhi)接的(de)(de)(de)(de)影響(xiang)(xiang)。比電(dian)(dian)阻過低,塵(chen)粒難以保(bao)持(chi)在集塵(chen)電(dian)(dian)極(ji)(ji)上,致使其(qi)重(zhong)返氣(qi)流。比電(dian)(dian)阻過高(gao)(gao),到達集塵(chen)電(dian)(dian)極(ji)(ji)的(de)(de)(de)(de)塵(chen)粒電(dian)(dian)荷(he)不(bu)(bu)易放出,在塵(chen)層之間形(xing)成電(dian)(dian)壓梯度(du)會產生局部擊穿(chuan)和放電(dian)(dian)現象。這些情(qing)況都會造成除(chu)塵(chen)效(xiao)率下降(jiang)。
電(dian)除塵(chen)器的基本原理(li)是利用電(dian)力捕集煙氣中的粉(fen)(fen)塵(chen),主要包括以下四個相互有(you)關的物理(li)過程: (1) 氣體(ti)的電(dian)離。(2) 粉(fen)(fen)塵(chen)的荷電(dian)。(3) 荷電(dian)粉(fen)(fen)塵(chen)向電(dian)極移(yi)動。(4) 荷電(dian)粉(fen)(fen)塵(chen)的捕集。