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(shi)靜(jing)電(dian)(dian)(dian)除塵(chen)(chen)器是以靜(jing)電(dian)(dian)(dian)凈化法來(lai)(lai)(lai)收捕廢氣(qi)(qi)(qi)(qi)中(zhong)的(de)(de)(de)(de)粉(fen)塵(chen)(chen),它的(de)(de)(de)(de)凈化工作上(shang)要是依靠電(dian)(dian)(dian)暈(yun)(yun)(yun)極(ji)(ji)(ji)(ji)(ji)和(he)(he)沉(chen)淀兩個系(xi)統來(lai)(lai)(lai)完(wan)成的(de)(de)(de)(de),當含塵(chen)(chen)氣(qi)(qi)(qi)(qi)體(ti)(ti)進(jin)(jin)人(ren)(ren)氣(qi)(qi)(qi)(qi)刺叭時(shi),含塵(chen)(chen)氣(qi)(qi)(qi)(qi)體(ti)(ti)受(shou)到氣(qi)(qi)(qi)(qi)流(liu)分布板以及折流(liu)板的(de)(de)(de)(de)調整(zheng)后,使(shi)氣(qi)(qi)(qi)(qi)流(liu)能較均勻地進(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)場。在橫斷面擴大的(de)(de)(de)(de)作用下,氣(qi)(qi)(qi)(qi)流(liu)速(su)(su)度迅速(su)(su)降(jiang)低(di),其(qi)中(zhong)有些(xie)較重的(de)(de)(de)(de)塵(chen)(chen)粒(li)便(bian)失(shi)去(qu)速(su)(su)度而沉(chen)降(jiang)下來(lai)(lai)(lai)。進(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)場的(de)(de)(de)(de)含塵(chen)(chen)氣(qi)(qi)(qi)(qi)體(ti)(ti)由于電(dian)(dian)(dian)暈(yun)(yun)(yun)極(ji)(ji)(ji)(ji)(ji)通(tong)人(ren)(ren)高壓直(zhi)流(liu)電(dian)(dian)(dian),則在電(dian)(dian)(dian)暈(yun)(yun)(yun)極(ji)(ji)(ji)(ji)(ji)附近產生(sheng)電(dian)(dian)(dian)暈(yun)(yun)(yun)現象,使(shi)氣(qi)(qi)(qi)(qi)體(ti)(ti)電(dian)(dian)(dian)離(li),電(dian)(dian)(dian)離(li)后的(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)(ti)中(zhong)存在大量的(de)(de)(de)(de)電(dian)(dian)(dian)子(zi)和(he)(he)離(li)子(zi),這些(xie)電(dian)(dian)(dian)子(zi)和(he)(he)離(li)子(zi)與進(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)場的(de)(de)(de)(de)粉(fen)塵(chen)(chen)結合起來(lai)(lai)(lai),使(shi)塵(chen)(chen)粒(li)帶電(dian)(dian)(dian),帶電(dian)(dian)(dian)塵(chen)(chen)粒(li)在電(dian)(dian)(dian)場力的(de)(de)(de)(de)作用下趨(qu)向本(ben)設備陽(yang)極(ji)(ji)(ji)(ji)(ji)(正極(ji)(ji)(ji)(ji)(ji)、本(ben)設備采用負(fu)高壓制)和(he)(he)陰(yin)極(ji)(ji)(ji)(ji)(ji)(負(fu)極(ji)(ji)(ji)(ji)(ji)) , 釋(shi)放(fang)出電(dian)(dian)(dian)子(zi)分別沉(chen)積(ji)在相應的(de)(de)(de)(de)電(dian)(dian)(dian)極(ji)(ji)(ji)(ji)(ji)上(shang),通(tong)過設備陰(yin)陽(yang)極(ji)(ji)(ji)(ji)(ji)振(zhen)打系(xi)統的(de)(de)(de)(de)振(zhen)打,使(shi)沉(chen)積(ji)在陰(yin)陽(yang)電(dian)(dian)(dian)極(ji)(ji)(ji)(ji)(ji)上(shang)的(de)(de)(de)(de)粉(fen)塵(chen)(chen)振(zhen)落,進(jin)(jin)人(ren)(ren)集灰(hui)斗 通(tong)過排(pai)灰(hui)裝置(zhi)放(fang)出,回收有物(wu)料,被)凈化的(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)(ti)排(pai)入大氣(qi)(qi)(qi)(qi)。
工作原(yuan)理(li)
靜(jing)(jing)電(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)器的(de)(de)(de)工作原理是利用高壓電(dian)(dian)(dian)(dian)場使(shi)煙(yan)氣(qi)(qi)發生電(dian)(dian)(dian)(dian)離(li)(li),氣(qi)(qi)流(liu)中的(de)(de)(de)粉(fen)(fen)塵(chen)(chen)荷電(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)場作用下與氣(qi)(qi)流(liu)分離(li)(li)。負(fu)極(ji)(ji)(ji)由不(bu)同斷(duan)面(mian)形狀(zhuang)的(de)(de)(de)金屬導線制成,叫放電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)。正極(ji)(ji)(ji)由不(bu)同幾何(he)形狀(zhuang)的(de)(de)(de)金屬板(ban)制成,叫集(ji)塵(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)。靜(jing)(jing)電(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)器的(de)(de)(de)性(xing)(xing)能受粉(fen)(fen)塵(chen)(chen)性(xing)(xing)質(zhi)、設備構造和煙(yan)氣(qi)(qi)流(liu)速等三個因素的(de)(de)(de)影響(xiang)。粉(fen)(fen)塵(chen)(chen)的(de)(de)(de)比電(dian)(dian)(dian)(dian)阻是評價導電(dian)(dian)(dian)(dian)性(xing)(xing)的(de)(de)(de)指標,它對除(chu)塵(chen)(chen)效率(lv)有直(zhi)接的(de)(de)(de)影響(xiang)。比電(dian)(dian)(dian)(dian)阻過(guo)低,塵(chen)(chen)粒難(nan)以保持在(zai)集(ji)塵(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上(shang),致(zhi)使(shi)其重(zhong)返氣(qi)(qi)流(liu)。比電(dian)(dian)(dian)(dian)阻過(guo)高,到達集(ji)塵(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)的(de)(de)(de)塵(chen)(chen)粒電(dian)(dian)(dian)(dian)荷不(bu)易放出,在(zai)塵(chen)(chen)層之間形成電(dian)(dian)(dian)(dian)壓梯度會產生局部擊穿(chuan)和放電(dian)(dian)(dian)(dian)現(xian)象。這些情況(kuang)都會造成除(chu)塵(chen)(chen)效率(lv)下降。
電除(chu)塵(chen)器的基本原(yuan)理(li)(li)是利用電力捕集煙(yan)氣中(zhong)的粉塵(chen),主要包括以下四個(ge)相互有(you)關的物理(li)(li)過程: (1) 氣體的電離(li)。(2) 粉塵(chen)的荷(he)電。(3) 荷(he)電粉塵(chen)向電極(ji)移動。(4) 荷(he)電粉塵(chen)的捕集。