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)(chen)(chen)器是以(yi)靜(jing)電(dian)(dian)(dian)凈化法(fa)來(lai)(lai)收捕(bu)廢氣(qi)(qi)(qi)中(zhong)的(de)(de)粉(fen)(fen)塵(chen)(chen)(chen)(chen),它的(de)(de)凈化工作(zuo)(zuo)上要是依靠電(dian)(dian)(dian)暈(yun)極(ji)和(he)(he)沉淀(dian)兩個系(xi)統來(lai)(lai)完(wan)成的(de)(de),當含塵(chen)(chen)(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)進人(ren)(ren)氣(qi)(qi)(qi)刺(ci)叭時,含塵(chen)(chen)(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)受到氣(qi)(qi)(qi)流(liu)分(fen)布板以(yi)及折流(liu)板的(de)(de)調(diao)整后(hou),使(shi)氣(qi)(qi)(qi)流(liu)能較均勻地進人(ren)(ren)電(dian)(dian)(dian)場。在(zai)橫斷面擴大的(de)(de)作(zuo)(zuo)用(yong)下(xia)(xia),氣(qi)(qi)(qi)流(liu)速度(du)迅速降(jiang)低,其中(zhong)有(you)些(xie)較重的(de)(de)塵(chen)(chen)(chen)(chen)粒(li)便失去速度(du)而沉降(jiang)下(xia)(xia)來(lai)(lai)。進人(ren)(ren)電(dian)(dian)(dian)場的(de)(de)含塵(chen)(chen)(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)由于電(dian)(dian)(dian)暈(yun)極(ji)通人(ren)(ren)高(gao)壓(ya)直流(liu)電(dian)(dian)(dian),則(ze)在(zai)電(dian)(dian)(dian)暈(yun)極(ji)附近產生電(dian)(dian)(dian)暈(yun)現象,使(shi)氣(qi)(qi)(qi)體(ti)(ti)電(dian)(dian)(dian)離(li)(li)(li),電(dian)(dian)(dian)離(li)(li)(li)后(hou)的(de)(de)氣(qi)(qi)(qi)體(ti)(ti)中(zhong)存在(zai)大量(liang)的(de)(de)電(dian)(dian)(dian)子(zi)(zi)和(he)(he)離(li)(li)(li)子(zi)(zi),這些(xie)電(dian)(dian)(dian)子(zi)(zi)和(he)(he)離(li)(li)(li)子(zi)(zi)與進人(ren)(ren)電(dian)(dian)(dian)場的(de)(de)粉(fen)(fen)塵(chen)(chen)(chen)(chen)結合起來(lai)(lai),使(shi)塵(chen)(chen)(chen)(chen)粒(li)帶電(dian)(dian)(dian),帶電(dian)(dian)(dian)塵(chen)(chen)(chen)(chen)粒(li)在(zai)電(dian)(dian)(dian)場力的(de)(de)作(zuo)(zuo)用(yong)下(xia)(xia)趨向本設備(bei)陽(yang)極(ji)(正極(ji)、本設備(bei)采用(yong)負(fu)高(gao)壓(ya)制)和(he)(he)陰(yin)極(ji)(負(fu)極(ji)) , 釋放出(chu)電(dian)(dian)(dian)子(zi)(zi)分(fen)別沉積在(zai)相應(ying)的(de)(de)電(dian)(dian)(dian)極(ji)上,通過設備(bei)陰(yin)陽(yang)極(ji)振(zhen)打(da)系(xi)統的(de)(de)振(zhen)打(da),使(shi)沉積在(zai)陰(yin)陽(yang)電(dian)(dian)(dian)極(ji)上的(de)(de)粉(fen)(fen)塵(chen)(chen)(chen)(chen)振(zhen)落,進人(ren)(ren)集灰斗 通過排灰裝置(zhi)放出(chu),回收有(you)物料,被)凈化的(de)(de)氣(qi)(qi)(qi)體(ti)(ti)排入大氣(qi)(qi)(qi)。
工作原理
靜(jing)電(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器(qi)的(de)工作原理是利(li)用高(gao)壓(ya)(ya)電(dian)(dian)(dian)(dian)場(chang)使煙(yan)氣(qi)發生電(dian)(dian)(dian)(dian)離(li),氣(qi)流中的(de)粉塵(chen)(chen)(chen)(chen)荷電(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)場(chang)作用下與氣(qi)流分離(li)。負極(ji)由(you)不同(tong)斷面形(xing)狀的(de)金屬導(dao)線制(zhi)成,叫放電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極(ji)。正極(ji)由(you)不同(tong)幾何(he)形(xing)狀的(de)金屬板制(zhi)成,叫集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)。靜(jing)電(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器(qi)的(de)性(xing)(xing)能受粉塵(chen)(chen)(chen)(chen)性(xing)(xing)質、設(she)備(bei)構(gou)造(zao)和煙(yan)氣(qi)流速(su)等三個因素的(de)影響。粉塵(chen)(chen)(chen)(chen)的(de)比電(dian)(dian)(dian)(dian)阻(zu)是評(ping)價導(dao)電(dian)(dian)(dian)(dian)性(xing)(xing)的(de)指標,它對除(chu)塵(chen)(chen)(chen)(chen)效率(lv)有直(zhi)接的(de)影響。比電(dian)(dian)(dian)(dian)阻(zu)過低,塵(chen)(chen)(chen)(chen)粒難以保持在(zai)集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)上,致(zhi)使其重返氣(qi)流。比電(dian)(dian)(dian)(dian)阻(zu)過高(gao),到(dao)達集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)的(de)塵(chen)(chen)(chen)(chen)粒電(dian)(dian)(dian)(dian)荷不易放出,在(zai)塵(chen)(chen)(chen)(chen)層之間形(xing)成電(dian)(dian)(dian)(dian)壓(ya)(ya)梯度(du)會產生局(ju)部擊穿和放電(dian)(dian)(dian)(dian)現象。這些情況都會造(zao)成除(chu)塵(chen)(chen)(chen)(chen)效率(lv)下降。
電(dian)除塵(chen)器的(de)(de)基(ji)本原理(li)是(shi)利用電(dian)力捕集煙氣中的(de)(de)粉(fen)(fen)塵(chen),主要包括以下(xia)四個相互(hu)有關的(de)(de)物理(li)過程: (1) 氣體的(de)(de)電(dian)離。(2) 粉(fen)(fen)塵(chen)的(de)(de)荷(he)電(dian)。(3) 荷(he)電(dian)粉(fen)(fen)塵(chen)向電(dian)極移動。(4) 荷(he)電(dian)粉(fen)(fen)塵(chen)的(de)(de)捕集。