XWD型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)除塵(chen)(chen)器是以靜(jing)電(dian)(dian)(dian)(dian)凈(jing)(jing)化法(fa)來(lai)收(shou)捕廢氣(qi)(qi)(qi)中的(de)(de)粉(fen)(fen)塵(chen)(chen),它的(de)(de)凈(jing)(jing)化工作(zuo)(zuo)上要是依(yi)靠電(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)(ji)和沉(chen)(chen)淀兩個(ge)系(xi)統來(lai)完(wan)成的(de)(de),當含塵(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)進(jin)人(ren)(ren)氣(qi)(qi)(qi)刺叭時,含塵(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)受到氣(qi)(qi)(qi)流(liu)(liu)分布板(ban)以及折流(liu)(liu)板(ban)的(de)(de)調整后,使(shi)氣(qi)(qi)(qi)流(liu)(liu)能較均勻地進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)場(chang)。在(zai)橫斷面(mian)擴大的(de)(de)作(zuo)(zuo)用(yong)下(xia)(xia),氣(qi)(qi)(qi)流(liu)(liu)速度迅速降(jiang)低,其中有些較重的(de)(de)塵(chen)(chen)粒(li)便失去(qu)速度而沉(chen)(chen)降(jiang)下(xia)(xia)來(lai)。進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)場(chang)的(de)(de)含塵(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)由于(yu)電(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)(ji)通人(ren)(ren)高(gao)壓直流(liu)(liu)電(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)(ji)附近產生電(dian)(dian)(dian)(dian)暈(yun)(yun)現象,使(shi)氣(qi)(qi)(qi)體(ti)(ti)電(dian)(dian)(dian)(dian)離(li)(li),電(dian)(dian)(dian)(dian)離(li)(li)后的(de)(de)氣(qi)(qi)(qi)體(ti)(ti)中存在(zai)大量的(de)(de)電(dian)(dian)(dian)(dian)子和離(li)(li)子,這些電(dian)(dian)(dian)(dian)子和離(li)(li)子與(yu)進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)場(chang)的(de)(de)粉(fen)(fen)塵(chen)(chen)結合起來(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)力(li)的(de)(de)作(zuo)(zuo)用(yong)下(xia)(xia)趨向本設(she)(she)備(bei)陽(yang)極(ji)(ji)(ji)(正極(ji)(ji)(ji)、本設(she)(she)備(bei)采(cai)用(yong)負高(gao)壓制)和陰極(ji)(ji)(ji)(負極(ji)(ji)(ji)) , 釋放出電(dian)(dian)(dian)(dian)子分別沉(chen)(chen)積(ji)在(zai)相(xiang)應的(de)(de)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上,通過(guo)設(she)(she)備(bei)陰陽(yang)極(ji)(ji)(ji)振打系(xi)統的(de)(de)振打,使(shi)沉(chen)(chen)積(ji)在(zai)陰陽(yang)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上的(de)(de)粉(fen)(fen)塵(chen)(chen)振落,進(jin)人(ren)(ren)集灰斗 通過(guo)排(pai)灰裝(zhuang)置放出,回收(shou)有物料,被(bei))凈(jing)(jing)化的(de)(de)氣(qi)(qi)(qi)體(ti)(ti)排(pai)入大氣(qi)(qi)(qi)。
工(gong)作原理
靜(jing)電(dian)(dian)除塵(chen)(chen)器(qi)的(de)工作(zuo)原理是(shi)(shi)利(li)用高(gao)壓(ya)電(dian)(dian)場(chang)使煙氣(qi)發生電(dian)(dian)離(li),氣(qi)流(liu)中的(de)粉(fen)塵(chen)(chen)荷(he)電(dian)(dian)在電(dian)(dian)場(chang)作(zuo)用下與氣(qi)流(liu)分離(li)。負極(ji)(ji)由(you)(you)不同斷面形狀的(de)金屬導線制成,叫(jiao)放電(dian)(dian)電(dian)(dian)極(ji)(ji)。正極(ji)(ji)由(you)(you)不同幾何形狀的(de)金屬板制成,叫(jiao)集塵(chen)(chen)電(dian)(dian)極(ji)(ji)。靜(jing)電(dian)(dian)除塵(chen)(chen)器(qi)的(de)性能(neng)受(shou)粉(fen)塵(chen)(chen)性質、設(she)備構造和煙氣(qi)流(liu)速(su)等三個因素的(de)影響(xiang)。粉(fen)塵(chen)(chen)的(de)比(bi)電(dian)(dian)阻(zu)是(shi)(shi)評(ping)價導電(dian)(dian)性的(de)指(zhi)標,它對除塵(chen)(chen)效率有直接的(de)影響(xiang)。比(bi)電(dian)(dian)阻(zu)過低(di),塵(chen)(chen)粒(li)難以(yi)保持(chi)在集塵(chen)(chen)電(dian)(dian)極(ji)(ji)上(shang),致使其重(zhong)返(fan)氣(qi)流(liu)。比(bi)電(dian)(dian)阻(zu)過高(gao),到達集塵(chen)(chen)電(dian)(dian)極(ji)(ji)的(de)塵(chen)(chen)粒(li)電(dian)(dian)荷(he)不易放出,在塵(chen)(chen)層之間(jian)形成電(dian)(dian)壓(ya)梯度(du)會(hui)產生局部(bu)擊穿和放電(dian)(dian)現象。這些情況都會(hui)造成除塵(chen)(chen)效率下降(jiang)。
電除塵(chen)(chen)器(qi)的基本原理(li)是利用電力捕(bu)集(ji)煙氣中(zhong)的粉塵(chen)(chen),主要包括以下四個相互有(you)關(guan)的物理(li)過程(cheng): (1) 氣體(ti)(ti)的電離。(2) 粉塵(chen)(chen)的荷電。(3) 荷電粉塵(chen)(chen)向電極(ji)移動(dong)。(4) 荷電粉塵(chen)(chen)的捕(bu)集(ji)。