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(chen)器是以靜(jing)電(dian)(dian)(dian)(dian)(dian)凈化(hua)法來(lai)(lai)收捕廢氣(qi)中(zhong)的(de)(de)(de)(de)(de)(de)粉(fen)(fen)塵(chen),它(ta)的(de)(de)(de)(de)(de)(de)凈化(hua)工(gong)作(zuo)上要是依(yi)靠電(dian)(dian)(dian)(dian)(dian)暈極和(he)沉(chen)淀兩個系統(tong)來(lai)(lai)完成的(de)(de)(de)(de)(de)(de),當含塵(chen)氣(qi)體(ti)進人(ren)氣(qi)刺叭時,含塵(chen)氣(qi)體(ti)受到氣(qi)流分布板(ban)(ban)以及折流板(ban)(ban)的(de)(de)(de)(de)(de)(de)調整后,使(shi)氣(qi)流能較(jiao)(jiao)均勻地(di)進人(ren)電(dian)(dian)(dian)(dian)(dian)場。在橫斷面擴大的(de)(de)(de)(de)(de)(de)作(zuo)用下(xia)(xia),氣(qi)流速度(du)迅速降低,其中(zhong)有些較(jiao)(jiao)重的(de)(de)(de)(de)(de)(de)塵(chen)粒便失去速度(du)而(er)沉(chen)降下(xia)(xia)來(lai)(lai)。進人(ren)電(dian)(dian)(dian)(dian)(dian)場的(de)(de)(de)(de)(de)(de)含塵(chen)氣(qi)體(ti)由于電(dian)(dian)(dian)(dian)(dian)暈極通(tong)(tong)人(ren)高壓直流電(dian)(dian)(dian)(dian)(dian),則在電(dian)(dian)(dian)(dian)(dian)暈極附近產生電(dian)(dian)(dian)(dian)(dian)暈現象,使(shi)氣(qi)體(ti)電(dian)(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)(dian)離后的(de)(de)(de)(de)(de)(de)氣(qi)體(ti)中(zhong)存在大量的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)子和(he)離子,這些電(dian)(dian)(dian)(dian)(dian)子和(he)離子與進人(ren)電(dian)(dian)(dian)(dian)(dian)場的(de)(de)(de)(de)(de)(de)粉(fen)(fen)塵(chen)結合起(qi)來(lai)(lai),使(shi)塵(chen)粒帶(dai)電(dian)(dian)(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)(dian)(dian)塵(chen)粒在電(dian)(dian)(dian)(dian)(dian)場力(li)的(de)(de)(de)(de)(de)(de)作(zuo)用下(xia)(xia)趨(qu)向本設備陽極(正極、本設備采用負(fu)高壓制(zhi))和(he)陰極(負(fu)極) , 釋放(fang)(fang)出(chu)電(dian)(dian)(dian)(dian)(dian)子分別沉(chen)積(ji)(ji)在相應的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)極上,通(tong)(tong)過(guo)設備陰陽極振打(da)系統(tong)的(de)(de)(de)(de)(de)(de)振打(da),使(shi)沉(chen)積(ji)(ji)在陰陽電(dian)(dian)(dian)(dian)(dian)極上的(de)(de)(de)(de)(de)(de)粉(fen)(fen)塵(chen)振落,進人(ren)集灰斗 通(tong)(tong)過(guo)排灰裝置放(fang)(fang)出(chu),回收有物料(liao),被)凈化(hua)的(de)(de)(de)(de)(de)(de)氣(qi)體(ti)排入(ru)大氣(qi)。
工作原(yuan)理
靜電(dian)(dian)(dian)除塵(chen)(chen)器的工作原(yuan)理是利用(yong)(yong)高(gao)壓電(dian)(dian)(dian)場(chang)使(shi)煙氣(qi)(qi)發生電(dian)(dian)(dian)離(li),氣(qi)(qi)流中的粉塵(chen)(chen)荷電(dian)(dian)(dian)在電(dian)(dian)(dian)場(chang)作用(yong)(yong)下與(yu)氣(qi)(qi)流分離(li)。負(fu)極(ji)(ji)由不同(tong)斷面形狀的金屬導(dao)線(xian)制成,叫放(fang)電(dian)(dian)(dian)電(dian)(dian)(dian)極(ji)(ji)。正(zheng)極(ji)(ji)由不同(tong)幾何形狀的金屬板制成,叫集塵(chen)(chen)電(dian)(dian)(dian)極(ji)(ji)。靜電(dian)(dian)(dian)除塵(chen)(chen)器的性能(neng)受(shou)粉塵(chen)(chen)性質(zhi)、設(she)備(bei)構造和(he)煙氣(qi)(qi)流速等(deng)三個因素(su)的影(ying)響(xiang)。粉塵(chen)(chen)的比(bi)電(dian)(dian)(dian)阻是評價導(dao)電(dian)(dian)(dian)性的指(zhi)標,它對除塵(chen)(chen)效率(lv)有(you)直(zhi)接的影(ying)響(xiang)。比(bi)電(dian)(dian)(dian)阻過(guo)低,塵(chen)(chen)粒難以保持在集塵(chen)(chen)電(dian)(dian)(dian)極(ji)(ji)上,致使(shi)其重返氣(qi)(qi)流。比(bi)電(dian)(dian)(dian)阻過(guo)高(gao),到達集塵(chen)(chen)電(dian)(dian)(dian)極(ji)(ji)的塵(chen)(chen)粒電(dian)(dian)(dian)荷不易放(fang)出,在塵(chen)(chen)層之間形成電(dian)(dian)(dian)壓梯度(du)會產生局(ju)部(bu)擊(ji)穿和(he)放(fang)電(dian)(dian)(dian)現象。這(zhe)些(xie)情況都會造成除塵(chen)(chen)效率(lv)下降。
電(dian)(dian)除塵(chen)(chen)器的(de)(de)基本原理(li)是利(li)用電(dian)(dian)力捕集煙氣(qi)中(zhong)的(de)(de)粉(fen)塵(chen)(chen),主要包括以下四個相(xiang)互有關的(de)(de)物理(li)過(guo)程(cheng): (1) 氣(qi)體(ti)的(de)(de)電(dian)(dian)離。(2) 粉(fen)塵(chen)(chen)的(de)(de)荷(he)電(dian)(dian)。(3) 荷(he)電(dian)(dian)粉(fen)塵(chen)(chen)向電(dian)(dian)極移動(dong)。(4) 荷(he)電(dian)(dian)粉(fen)塵(chen)(chen)的(de)(de)捕集。