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(chu)塵(chen)(chen)器是以靜電(dian)(dian)(dian)(dian)凈化法來(lai)收捕廢氣(qi)(qi)中的(de)(de)(de)(de)(de)(de)(de)粉塵(chen)(chen),它的(de)(de)(de)(de)(de)(de)(de)凈化工作(zuo)(zuo)上要是依靠電(dian)(dian)(dian)(dian)暈(yun)(yun)極和(he)沉(chen)淀(dian)兩個系(xi)統(tong)來(lai)完成的(de)(de)(de)(de)(de)(de)(de),當含(han)塵(chen)(chen)氣(qi)(qi)體(ti)(ti)(ti)進(jin)(jin)人(ren)(ren)(ren)氣(qi)(qi)刺叭(ba)時,含(han)塵(chen)(chen)氣(qi)(qi)體(ti)(ti)(ti)受到(dao)氣(qi)(qi)流(liu)分(fen)布(bu)板以及折流(liu)板的(de)(de)(de)(de)(de)(de)(de)調整(zheng)后,使(shi)氣(qi)(qi)流(liu)能較均勻地進(jin)(jin)人(ren)(ren)(ren)電(dian)(dian)(dian)(dian)場(chang)(chang)。在(zai)橫斷面擴大(da)(da)的(de)(de)(de)(de)(de)(de)(de)作(zuo)(zuo)用下(xia),氣(qi)(qi)流(liu)速(su)(su)度迅(xun)速(su)(su)降低(di),其中有(you)些(xie)較重的(de)(de)(de)(de)(de)(de)(de)塵(chen)(chen)粒(li)便失去速(su)(su)度而沉(chen)降下(xia)來(lai)。進(jin)(jin)人(ren)(ren)(ren)電(dian)(dian)(dian)(dian)場(chang)(chang)的(de)(de)(de)(de)(de)(de)(de)含(han)塵(chen)(chen)氣(qi)(qi)體(ti)(ti)(ti)由于電(dian)(dian)(dian)(dian)暈(yun)(yun)極通人(ren)(ren)(ren)高壓直流(liu)電(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)暈(yun)(yun)極附(fu)近產(chan)生電(dian)(dian)(dian)(dian)暈(yun)(yun)現象,使(shi)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)(de)氣(qi)(qi)體(ti)(ti)(ti)中存在(zai)大(da)(da)量的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)子和(he)離子,這些(xie)電(dian)(dian)(dian)(dian)子和(he)離子與(yu)進(jin)(jin)人(ren)(ren)(ren)電(dian)(dian)(dian)(dian)場(chang)(chang)的(de)(de)(de)(de)(de)(de)(de)粉塵(chen)(chen)結合(he)起來(lai),使(shi)塵(chen)(chen)粒(li)帶(dai)電(dian)(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)(dian)塵(chen)(chen)粒(li)在(zai)電(dian)(dian)(dian)(dian)場(chang)(chang)力的(de)(de)(de)(de)(de)(de)(de)作(zuo)(zuo)用下(xia)趨向本(ben)設(she)(she)備(bei)陽(yang)極(正(zheng)極、本(ben)設(she)(she)備(bei)采用負(fu)高壓制)和(he)陰極(負(fu)極) , 釋放(fang)出電(dian)(dian)(dian)(dian)子分(fen)別沉(chen)積(ji)在(zai)相應的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)極上,通過(guo)設(she)(she)備(bei)陰陽(yang)極振(zhen)打(da)系(xi)統(tong)的(de)(de)(de)(de)(de)(de)(de)振(zhen)打(da),使(shi)沉(chen)積(ji)在(zai)陰陽(yang)電(dian)(dian)(dian)(dian)極上的(de)(de)(de)(de)(de)(de)(de)粉塵(chen)(chen)振(zhen)落,進(jin)(jin)人(ren)(ren)(ren)集灰斗 通過(guo)排灰裝置放(fang)出,回收有(you)物料,被)凈化的(de)(de)(de)(de)(de)(de)(de)氣(qi)(qi)體(ti)(ti)(ti)排入(ru)大(da)(da)氣(qi)(qi)。
工作原理(li)
靜(jing)電(dian)(dian)(dian)(dian)除(chu)(chu)塵器的(de)(de)(de)(de)(de)工作(zuo)原理是(shi)利用高(gao)壓電(dian)(dian)(dian)(dian)場使(shi)煙氣(qi)(qi)發生電(dian)(dian)(dian)(dian)離,氣(qi)(qi)流(liu)(liu)中的(de)(de)(de)(de)(de)粉塵荷電(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)場作(zuo)用下(xia)(xia)與氣(qi)(qi)流(liu)(liu)分離。負極(ji)由(you)不同斷面(mian)形狀(zhuang)的(de)(de)(de)(de)(de)金屬(shu)導線制成(cheng),叫(jiao)放電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極(ji)。正極(ji)由(you)不同幾何形狀(zhuang)的(de)(de)(de)(de)(de)金屬(shu)板制成(cheng),叫(jiao)集(ji)(ji)塵電(dian)(dian)(dian)(dian)極(ji)。靜(jing)電(dian)(dian)(dian)(dian)除(chu)(chu)塵器的(de)(de)(de)(de)(de)性(xing)能受粉塵性(xing)質、設(she)備構(gou)造和(he)煙氣(qi)(qi)流(liu)(liu)速(su)等三個因素的(de)(de)(de)(de)(de)影響。粉塵的(de)(de)(de)(de)(de)比電(dian)(dian)(dian)(dian)阻是(shi)評價(jia)導電(dian)(dian)(dian)(dian)性(xing)的(de)(de)(de)(de)(de)指標,它(ta)對除(chu)(chu)塵效(xiao)率(lv)有直(zhi)接的(de)(de)(de)(de)(de)影響。比電(dian)(dian)(dian)(dian)阻過低,塵粒難(nan)以保持在(zai)集(ji)(ji)塵電(dian)(dian)(dian)(dian)極(ji)上,致使(shi)其(qi)重(zhong)返氣(qi)(qi)流(liu)(liu)。比電(dian)(dian)(dian)(dian)阻過高(gao),到(dao)達集(ji)(ji)塵電(dian)(dian)(dian)(dian)極(ji)的(de)(de)(de)(de)(de)塵粒電(dian)(dian)(dian)(dian)荷不易放出,在(zai)塵層之間形成(cheng)電(dian)(dian)(dian)(dian)壓梯度會(hui)產(chan)生局(ju)部擊(ji)穿和(he)放電(dian)(dian)(dian)(dian)現象。這些情(qing)況都會(hui)造成(cheng)除(chu)(chu)塵效(xiao)率(lv)下(xia)(xia)降。
電(dian)(dian)(dian)除塵(chen)(chen)器的(de)基本原(yuan)理是利(li)用(yong)電(dian)(dian)(dian)力捕集煙氣中的(de)粉(fen)塵(chen)(chen),主要包括(kuo)以(yi)下四個相(xiang)互有關的(de)物理過程: (1) 氣體(ti)的(de)電(dian)(dian)(dian)離。(2) 粉(fen)塵(chen)(chen)的(de)荷電(dian)(dian)(dian)。(3) 荷電(dian)(dian)(dian)粉(fen)塵(chen)(chen)向電(dian)(dian)(dian)極移動(dong)。(4) 荷電(dian)(dian)(dian)粉(fen)塵(chen)(chen)的(de)捕集。