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(shi)靜(jing)電(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)器是(shi)以靜(jing)電(dian)(dian)(dian)(dian)(dian)凈化法來收捕廢(fei)氣(qi)(qi)(qi)(qi)中(zhong)的(de)(de)(de)粉塵(chen)(chen),它的(de)(de)(de)凈化工作(zuo)上(shang)要是(shi)依靠電(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)極(ji)和(he)沉(chen)淀(dian)兩個系(xi)統(tong)來完成的(de)(de)(de),當含(han)塵(chen)(chen)氣(qi)(qi)(qi)(qi)體(ti)進(jin)人(ren)(ren)氣(qi)(qi)(qi)(qi)刺叭時,含(han)塵(chen)(chen)氣(qi)(qi)(qi)(qi)體(ti)受到氣(qi)(qi)(qi)(qi)流分布板(ban)以及折流板(ban)的(de)(de)(de)調(diao)整后(hou),使(shi)氣(qi)(qi)(qi)(qi)流能較均勻(yun)地進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)(chang)。在(zai)橫(heng)斷面(mian)擴大的(de)(de)(de)作(zuo)用下,氣(qi)(qi)(qi)(qi)流速(su)(su)度(du)迅速(su)(su)降(jiang)低,其中(zhong)有些較重的(de)(de)(de)塵(chen)(chen)粒(li)便失去(qu)速(su)(su)度(du)而(er)沉(chen)降(jiang)下來。進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)(chang)的(de)(de)(de)含(han)塵(chen)(chen)氣(qi)(qi)(qi)(qi)體(ti)由于電(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)極(ji)通人(ren)(ren)高壓直流電(dian)(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)極(ji)附近(jin)產生電(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)現象(xiang),使(shi)氣(qi)(qi)(qi)(qi)體(ti)電(dian)(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)(dian)離(li)后(hou)的(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)中(zhong)存在(zai)大量的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)子和(he)離(li)子,這(zhe)些電(dian)(dian)(dian)(dian)(dian)子和(he)離(li)子與進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)(chang)的(de)(de)(de)粉塵(chen)(chen)結(jie)合起來,使(shi)塵(chen)(chen)粒(li)帶電(dian)(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)粒(li)在(zai)電(dian)(dian)(dian)(dian)(dian)場(chang)(chang)力(li)的(de)(de)(de)作(zuo)用下趨向(xiang)本設備(bei)陽(yang)極(ji)(正極(ji)、本設備(bei)采用負(fu)高壓制)和(he)陰極(ji)(負(fu)極(ji)) , 釋(shi)放出電(dian)(dian)(dian)(dian)(dian)子分別沉(chen)積(ji)在(zai)相應的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)極(ji)上(shang),通過(guo)設備(bei)陰陽(yang)極(ji)振(zhen)打系(xi)統(tong)的(de)(de)(de)振(zhen)打,使(shi)沉(chen)積(ji)在(zai)陰陽(yang)電(dian)(dian)(dian)(dian)(dian)極(ji)上(shang)的(de)(de)(de)粉塵(chen)(chen)振(zhen)落,進(jin)人(ren)(ren)集灰斗(dou) 通過(guo)排灰裝置放出,回(hui)收有物(wu)料,被(bei))凈化的(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)排入大氣(qi)(qi)(qi)(qi)。
工作原理
靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器的(de)工作(zuo)原理是利用(yong)高壓電(dian)(dian)(dian)(dian)(dian)場(chang)(chang)使(shi)煙(yan)氣發生電(dian)(dian)(dian)(dian)(dian)離,氣流(liu)中的(de)粉塵(chen)(chen)(chen)(chen)荷電(dian)(dian)(dian)(dian)(dian)在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)場(chang)(chang)作(zuo)用(yong)下(xia)與氣流(liu)分離。負極(ji)(ji)由不同斷面形(xing)(xing)狀的(de)金屬(shu)導線(xian)制成(cheng),叫(jiao)放電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)。正(zheng)極(ji)(ji)由不同幾(ji)何形(xing)(xing)狀的(de)金屬(shu)板制成(cheng),叫(jiao)集(ji)(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)。靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器的(de)性能受粉塵(chen)(chen)(chen)(chen)性質、設備構造和煙(yan)氣流(liu)速等三個因素的(de)影響。粉塵(chen)(chen)(chen)(chen)的(de)比(bi)(bi)(bi)電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)是評價導電(dian)(dian)(dian)(dian)(dian)性的(de)指標,它對除(chu)塵(chen)(chen)(chen)(chen)效率有直接的(de)影響。比(bi)(bi)(bi)電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)過低(di),塵(chen)(chen)(chen)(chen)粒難以保持在(zai)(zai)集(ji)(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上(shang),致(zhi)使(shi)其重返氣流(liu)。比(bi)(bi)(bi)電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)過高,到(dao)達集(ji)(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)的(de)塵(chen)(chen)(chen)(chen)粒電(dian)(dian)(dian)(dian)(dian)荷不易(yi)放出,在(zai)(zai)塵(chen)(chen)(chen)(chen)層之間(jian)形(xing)(xing)成(cheng)電(dian)(dian)(dian)(dian)(dian)壓梯度會(hui)產生局部擊穿和放電(dian)(dian)(dian)(dian)(dian)現(xian)象。這些情況都會(hui)造成(cheng)除(chu)塵(chen)(chen)(chen)(chen)效率下(xia)降。
電(dian)(dian)除塵(chen)(chen)(chen)器(qi)的(de)(de)基本原理(li)是利用電(dian)(dian)力捕集(ji)(ji)煙氣(qi)(qi)中的(de)(de)粉(fen)(fen)塵(chen)(chen)(chen),主要包括(kuo)以下四個相(xiang)互有(you)關的(de)(de)物理(li)過程: (1) 氣(qi)(qi)體的(de)(de)電(dian)(dian)離。(2) 粉(fen)(fen)塵(chen)(chen)(chen)的(de)(de)荷(he)(he)(he)電(dian)(dian)。(3) 荷(he)(he)(he)電(dian)(dian)粉(fen)(fen)塵(chen)(chen)(chen)向(xiang)電(dian)(dian)極移動。(4) 荷(he)(he)(he)電(dian)(dian)粉(fen)(fen)塵(chen)(chen)(chen)的(de)(de)捕集(ji)(ji)。