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。
臥式靜電(dian)(dian)(dian)除(chu)塵(chen)(chen)器(qi)是以靜電(dian)(dian)(dian)凈化(hua)法(fa)來(lai)收(shou)捕廢(fei)氣(qi)(qi)中(zhong)的(de)(de)(de)粉塵(chen)(chen),它的(de)(de)(de)凈化(hua)工(gong)作(zuo)上要是依靠電(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)(ji)和沉淀兩個系統來(lai)完成的(de)(de)(de),當含(han)(han)塵(chen)(chen)氣(qi)(qi)體(ti)(ti)進(jin)人(ren)(ren)氣(qi)(qi)刺叭時,含(han)(han)塵(chen)(chen)氣(qi)(qi)體(ti)(ti)受到氣(qi)(qi)流(liu)分布板以及折流(liu)板的(de)(de)(de)調整后,使氣(qi)(qi)流(liu)能較均(jun)勻(yun)地進(jin)人(ren)(ren)電(dian)(dian)(dian)場。在橫斷面擴大(da)的(de)(de)(de)作(zuo)用下(xia),氣(qi)(qi)流(liu)速度(du)迅速降低,其(qi)中(zhong)有些(xie)較重的(de)(de)(de)塵(chen)(chen)粒(li)便失去速度(du)而沉降下(xia)來(lai)。進(jin)人(ren)(ren)電(dian)(dian)(dian)場的(de)(de)(de)含(han)(han)塵(chen)(chen)氣(qi)(qi)體(ti)(ti)由于電(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)(ji)通(tong)人(ren)(ren)高壓直流(liu)電(dian)(dian)(dian),則(ze)在電(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)(ji)附近產生電(dian)(dian)(dian)暈(yun)(yun)現(xian)象(xiang),使氣(qi)(qi)體(ti)(ti)電(dian)(dian)(dian)離(li),電(dian)(dian)(dian)離(li)后的(de)(de)(de)氣(qi)(qi)體(ti)(ti)中(zhong)存在大(da)量的(de)(de)(de)電(dian)(dian)(dian)子(zi)和離(li)子(zi),這(zhe)些(xie)電(dian)(dian)(dian)子(zi)和離(li)子(zi)與(yu)進(jin)人(ren)(ren)電(dian)(dian)(dian)場的(de)(de)(de)粉塵(chen)(chen)結合起(qi)來(lai),使塵(chen)(chen)粒(li)帶(dai)(dai)電(dian)(dian)(dian),帶(dai)(dai)電(dian)(dian)(dian)塵(chen)(chen)粒(li)在電(dian)(dian)(dian)場力的(de)(de)(de)作(zuo)用下(xia)趨向本(ben)設(she)備(bei)陽(yang)極(ji)(ji)(ji)(正極(ji)(ji)(ji)、本(ben)設(she)備(bei)采(cai)用負高壓制(zhi))和陰(yin)極(ji)(ji)(ji)(負極(ji)(ji)(ji)) , 釋(shi)放(fang)出(chu)(chu)電(dian)(dian)(dian)子(zi)分別沉積在相應的(de)(de)(de)電(dian)(dian)(dian)極(ji)(ji)(ji)上,通(tong)過設(she)備(bei)陰(yin)陽(yang)極(ji)(ji)(ji)振打(da)系統的(de)(de)(de)振打(da),使沉積在陰(yin)陽(yang)電(dian)(dian)(dian)極(ji)(ji)(ji)上的(de)(de)(de)粉塵(chen)(chen)振落,進(jin)人(ren)(ren)集灰(hui)斗 通(tong)過排(pai)灰(hui)裝置放(fang)出(chu)(chu),回收(shou)有物料,被)凈化(hua)的(de)(de)(de)氣(qi)(qi)體(ti)(ti)排(pai)入大(da)氣(qi)(qi)。
工作原理(li)
靜電(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)(chen)器的(de)(de)(de)工作原理是利用(yong)高壓電(dian)(dian)(dian)(dian)場使(shi)(shi)煙氣發生電(dian)(dian)(dian)(dian)離(li),氣流(liu)中的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)荷電(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)場作用(yong)下(xia)(xia)與氣流(liu)分(fen)離(li)。負(fu)極(ji)(ji)由不同斷面(mian)形(xing)狀(zhuang)的(de)(de)(de)金屬導線制成,叫放(fang)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極(ji)(ji)。正極(ji)(ji)由不同幾何(he)形(xing)狀(zhuang)的(de)(de)(de)金屬板(ban)制成,叫集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)(ji)。靜電(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)(chen)器的(de)(de)(de)性(xing)(xing)能受粉(fen)塵(chen)(chen)(chen)(chen)性(xing)(xing)質(zhi)、設備構造和(he)煙氣流(liu)速等三個(ge)因素的(de)(de)(de)影響(xiang)。粉(fen)塵(chen)(chen)(chen)(chen)的(de)(de)(de)比(bi)(bi)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(ta)對除塵(chen)(chen)(chen)(chen)效(xiao)率有直(zhi)接的(de)(de)(de)影響(xiang)。比(bi)(bi)電(dian)(dian)(dian)(dian)阻過(guo)(guo)低(di),塵(chen)(chen)(chen)(chen)粒難(nan)以保持(chi)在(zai)集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)(ji)上,致使(shi)(shi)其重返氣流(liu)。比(bi)(bi)電(dian)(dian)(dian)(dian)阻過(guo)(guo)高,到達集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)(ji)的(de)(de)(de)塵(chen)(chen)(chen)(chen)粒電(dian)(dian)(dian)(dian)荷不易放(fang)出,在(zai)塵(chen)(chen)(chen)(chen)層之間形(xing)成電(dian)(dian)(dian)(dian)壓梯度會(hui)產生局部擊穿和(he)放(fang)電(dian)(dian)(dian)(dian)現象(xiang)。這些情況都會(hui)造成除塵(chen)(chen)(chen)(chen)效(xiao)率下(xia)(xia)降。
電(dian)除塵(chen)器的(de)基(ji)本(ben)原理是(shi)利用電(dian)力捕集煙氣中的(de)粉塵(chen),主要包括以(yi)下(xia)四個相(xiang)互有關(guan)的(de)物理過程: (1) 氣體的(de)電(dian)離(li)。(2) 粉塵(chen)的(de)荷(he)電(dian)。(3) 荷(he)電(dian)粉塵(chen)向電(dian)極移動。(4) 荷(he)電(dian)粉塵(chen)的(de)捕集。