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)除塵(chen)(chen)器是以(yi)(yi)靜(jing)電(dian)(dian)(dian)凈化(hua)法(fa)來收(shou)捕廢氣(qi)(qi)(qi)(qi)中(zhong)的(de)(de)(de)(de)粉塵(chen)(chen),它的(de)(de)(de)(de)凈化(hua)工作上要是依靠電(dian)(dian)(dian)暈極(ji)(ji)(ji)和(he)沉淀兩個系(xi)統(tong)來完(wan)成的(de)(de)(de)(de),當(dang)含(han)塵(chen)(chen)氣(qi)(qi)(qi)(qi)體(ti)(ti)(ti)進(jin)(jin)人(ren)(ren)氣(qi)(qi)(qi)(qi)刺(ci)叭時,含(han)塵(chen)(chen)氣(qi)(qi)(qi)(qi)體(ti)(ti)(ti)受到氣(qi)(qi)(qi)(qi)流(liu)分(fen)(fen)布板以(yi)(yi)及折流(liu)板的(de)(de)(de)(de)調整(zheng)后,使(shi)(shi)氣(qi)(qi)(qi)(qi)流(liu)能較均勻地進(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)場。在(zai)(zai)(zai)橫斷面擴大(da)(da)的(de)(de)(de)(de)作用下,氣(qi)(qi)(qi)(qi)流(liu)速度迅速降低,其中(zhong)有些(xie)較重的(de)(de)(de)(de)塵(chen)(chen)粒便失去速度而沉降下來。進(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)場的(de)(de)(de)(de)含(han)塵(chen)(chen)氣(qi)(qi)(qi)(qi)體(ti)(ti)(ti)由于電(dian)(dian)(dian)暈極(ji)(ji)(ji)通(tong)人(ren)(ren)高壓(ya)(ya)直流(liu)電(dian)(dian)(dian),則在(zai)(zai)(zai)電(dian)(dian)(dian)暈極(ji)(ji)(ji)附近(jin)產生電(dian)(dian)(dian)暈現(xian)象,使(shi)(shi)氣(qi)(qi)(qi)(qi)體(ti)(ti)(ti)電(dian)(dian)(dian)離(li)(li),電(dian)(dian)(dian)離(li)(li)后的(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)(ti)(ti)中(zhong)存在(zai)(zai)(zai)大(da)(da)量(liang)的(de)(de)(de)(de)電(dian)(dian)(dian)子和(he)離(li)(li)子,這些(xie)電(dian)(dian)(dian)子和(he)離(li)(li)子與(yu)進(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)場的(de)(de)(de)(de)粉塵(chen)(chen)結合(he)起來,使(shi)(shi)塵(chen)(chen)粒帶電(dian)(dian)(dian),帶電(dian)(dian)(dian)塵(chen)(chen)粒在(zai)(zai)(zai)電(dian)(dian)(dian)場力(li)的(de)(de)(de)(de)作用下趨向本設(she)(she)備陽極(ji)(ji)(ji)(正極(ji)(ji)(ji)、本設(she)(she)備采用負(fu)高壓(ya)(ya)制(zhi))和(he)陰(yin)極(ji)(ji)(ji)(負(fu)極(ji)(ji)(ji)) , 釋放出電(dian)(dian)(dian)子分(fen)(fen)別沉積(ji)(ji)在(zai)(zai)(zai)相(xiang)應的(de)(de)(de)(de)電(dian)(dian)(dian)極(ji)(ji)(ji)上,通(tong)過設(she)(she)備陰(yin)陽極(ji)(ji)(ji)振打(da)(da)系(xi)統(tong)的(de)(de)(de)(de)振打(da)(da),使(shi)(shi)沉積(ji)(ji)在(zai)(zai)(zai)陰(yin)陽電(dian)(dian)(dian)極(ji)(ji)(ji)上的(de)(de)(de)(de)粉塵(chen)(chen)振落,進(jin)(jin)人(ren)(ren)集灰斗 通(tong)過排灰裝置(zhi)放出,回收(shou)有物(wu)料,被)凈化(hua)的(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)(ti)(ti)排入(ru)大(da)(da)氣(qi)(qi)(qi)(qi)。
工作原理
靜(jing)電(dian)(dian)(dian)除(chu)塵(chen)(chen)器的(de)(de)工(gong)作原理是利用高壓(ya)電(dian)(dian)(dian)場(chang)使(shi)(shi)煙(yan)氣(qi)發生(sheng)電(dian)(dian)(dian)離,氣(qi)流中的(de)(de)粉塵(chen)(chen)荷(he)電(dian)(dian)(dian)在電(dian)(dian)(dian)場(chang)作用下與氣(qi)流分(fen)離。負極由不(bu)(bu)同(tong)斷面(mian)形狀(zhuang)的(de)(de)金屬(shu)導線制(zhi)成(cheng),叫放電(dian)(dian)(dian)電(dian)(dian)(dian)極。正極由不(bu)(bu)同(tong)幾(ji)何形狀(zhuang)的(de)(de)金屬(shu)板制(zhi)成(cheng),叫集(ji)塵(chen)(chen)電(dian)(dian)(dian)極。靜(jing)電(dian)(dian)(dian)除(chu)塵(chen)(chen)器的(de)(de)性能(neng)受粉塵(chen)(chen)性質、設備(bei)構造和(he)煙(yan)氣(qi)流速等三個因素的(de)(de)影(ying)響。粉塵(chen)(chen)的(de)(de)比電(dian)(dian)(dian)阻是評價導電(dian)(dian)(dian)性的(de)(de)指(zhi)標(biao),它對除(chu)塵(chen)(chen)效(xiao)(xiao)率有直接的(de)(de)影(ying)響。比電(dian)(dian)(dian)阻過(guo)(guo)低,塵(chen)(chen)粒難(nan)以保持在集(ji)塵(chen)(chen)電(dian)(dian)(dian)極上,致使(shi)(shi)其重返氣(qi)流。比電(dian)(dian)(dian)阻過(guo)(guo)高,到達集(ji)塵(chen)(chen)電(dian)(dian)(dian)極的(de)(de)塵(chen)(chen)粒電(dian)(dian)(dian)荷(he)不(bu)(bu)易放出,在塵(chen)(chen)層之間形成(cheng)電(dian)(dian)(dian)壓(ya)梯度會產生(sheng)局部擊(ji)穿和(he)放電(dian)(dian)(dian)現象。這些情況都會造成(cheng)除(chu)塵(chen)(chen)效(xiao)(xiao)率下降。
電除(chu)塵(chen)器的(de)基本原理是利用電力(li)捕集(ji)煙(yan)氣(qi)(qi)中的(de)粉(fen)塵(chen),主要包括以(yi)下四個相(xiang)互有關的(de)物理過程(cheng): (1) 氣(qi)(qi)體的(de)電離。(2) 粉(fen)塵(chen)的(de)荷電。(3) 荷電粉(fen)塵(chen)向電極移(yi)動。(4) 荷電粉(fen)塵(chen)的(de)捕集(ji)。