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(wo)式靜電(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)器是以靜電(dian)(dian)(dian)(dian)(dian)凈(jing)化(hua)法來收捕廢氣(qi)(qi)中(zhong)的(de)(de)粉(fen)塵(chen)(chen)(chen),它的(de)(de)凈(jing)化(hua)工(gong)作上要是依(yi)靠電(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)和沉(chen)(chen)淀兩個系統來完成的(de)(de),當(dang)含(han)塵(chen)(chen)(chen)氣(qi)(qi)體(ti)(ti)(ti)進(jin)(jin)(jin)人(ren)(ren)氣(qi)(qi)刺叭時(shi),含(han)塵(chen)(chen)(chen)氣(qi)(qi)體(ti)(ti)(ti)受到氣(qi)(qi)流(liu)分布(bu)板(ban)(ban)以及(ji)折流(liu)板(ban)(ban)的(de)(de)調整后(hou),使(shi)氣(qi)(qi)流(liu)能較均勻地進(jin)(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場。在(zai)橫斷(duan)面擴(kuo)大的(de)(de)作用(yong)下(xia),氣(qi)(qi)流(liu)速(su)度迅速(su)降低,其(qi)中(zhong)有些較重的(de)(de)塵(chen)(chen)(chen)粒便失去(qu)速(su)度而沉(chen)(chen)降下(xia)來。進(jin)(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場的(de)(de)含(han)塵(chen)(chen)(chen)氣(qi)(qi)體(ti)(ti)(ti)由于電(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)通(tong)人(ren)(ren)高(gao)壓(ya)直流(liu)電(dian)(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)附近(jin)產生電(dian)(dian)(dian)(dian)(dian)暈現(xian)象(xiang),使(shi)氣(qi)(qi)體(ti)(ti)(ti)電(dian)(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)(dian)離后(hou)的(de)(de)氣(qi)(qi)體(ti)(ti)(ti)中(zhong)存(cun)在(zai)大量(liang)的(de)(de)電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)和離子(zi)(zi),這(zhe)些電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)和離子(zi)(zi)與進(jin)(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場的(de)(de)粉(fen)塵(chen)(chen)(chen)結合起來,使(shi)塵(chen)(chen)(chen)粒帶(dai)電(dian)(dian)(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)(chen)粒在(zai)電(dian)(dian)(dian)(dian)(dian)場力的(de)(de)作用(yong)下(xia)趨向本設(she)備(bei)陽極(ji)(ji)(正極(ji)(ji)、本設(she)備(bei)采用(yong)負(fu)高(gao)壓(ya)制)和陰極(ji)(ji)(負(fu)極(ji)(ji)) , 釋放出電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)分別沉(chen)(chen)積在(zai)相應的(de)(de)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上,通(tong)過設(she)備(bei)陰陽極(ji)(ji)振打系統的(de)(de)振打,使(shi)沉(chen)(chen)積在(zai)陰陽電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上的(de)(de)粉(fen)塵(chen)(chen)(chen)振落,進(jin)(jin)(jin)人(ren)(ren)集灰斗 通(tong)過排(pai)灰裝置放出,回收有物料,被)凈(jing)化(hua)的(de)(de)氣(qi)(qi)體(ti)(ti)(ti)排(pai)入大氣(qi)(qi)。
工作原理
靜(jing)電(dian)(dian)(dian)除塵(chen)(chen)器的(de)(de)(de)(de)工作(zuo)原理(li)是(shi)利用高壓(ya)電(dian)(dian)(dian)場(chang)使煙(yan)氣發生(sheng)電(dian)(dian)(dian)離,氣流中的(de)(de)(de)(de)粉塵(chen)(chen)荷電(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)場(chang)作(zuo)用下(xia)與氣流分(fen)離。負(fu)極(ji)由(you)不同斷面形(xing)狀(zhuang)的(de)(de)(de)(de)金屬(shu)導線制成,叫放電(dian)(dian)(dian)電(dian)(dian)(dian)極(ji)。正(zheng)極(ji)由(you)不同幾何形(xing)狀(zhuang)的(de)(de)(de)(de)金屬(shu)板制成,叫集(ji)塵(chen)(chen)電(dian)(dian)(dian)極(ji)。靜(jing)電(dian)(dian)(dian)除塵(chen)(chen)器的(de)(de)(de)(de)性能(neng)受(shou)粉塵(chen)(chen)性質、設(she)備構造和煙(yan)氣流速等(deng)三(san)個因素(su)的(de)(de)(de)(de)影響。粉塵(chen)(chen)的(de)(de)(de)(de)比(bi)電(dian)(dian)(dian)阻(zu)是(shi)評價導電(dian)(dian)(dian)性的(de)(de)(de)(de)指(zhi)標,它對除塵(chen)(chen)效率(lv)有直(zhi)接的(de)(de)(de)(de)影響。比(bi)電(dian)(dian)(dian)阻(zu)過低(di),塵(chen)(chen)粒難以保持(chi)在(zai)集(ji)塵(chen)(chen)電(dian)(dian)(dian)極(ji)上,致使其(qi)重(zhong)返氣流。比(bi)電(dian)(dian)(dian)阻(zu)過高,到達集(ji)塵(chen)(chen)電(dian)(dian)(dian)極(ji)的(de)(de)(de)(de)塵(chen)(chen)粒電(dian)(dian)(dian)荷不易放出,在(zai)塵(chen)(chen)層之間形(xing)成電(dian)(dian)(dian)壓(ya)梯度(du)會產生(sheng)局部擊穿和放電(dian)(dian)(dian)現象(xiang)。這些(xie)情(qing)況都(dou)會造成除塵(chen)(chen)效率(lv)下(xia)降。
電(dian)除(chu)塵器的基本原理是利(li)用電(dian)力捕(bu)集煙(yan)氣中(zhong)的粉塵,主要包括以下四個相互有(you)關的物(wu)理過程: (1) 氣體的電(dian)離。(2) 粉塵的荷(he)電(dian)。(3) 荷(he)電(dian)粉塵向電(dian)極(ji)移動(dong)。(4) 荷(he)電(dian)粉塵的捕(bu)集。