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)靜電(dian)(dian)(dian)(dian)除塵(chen)器是(shi)以(yi)靜電(dian)(dian)(dian)(dian)凈化法來(lai)收捕(bu)廢(fei)氣(qi)(qi)(qi)(qi)(qi)中(zhong)的(de)(de)(de)(de)(de)(de)粉(fen)塵(chen),它的(de)(de)(de)(de)(de)(de)凈化工作(zuo)上(shang)要是(shi)依(yi)靠電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)和(he)沉(chen)淀兩個系統來(lai)完成的(de)(de)(de)(de)(de)(de),當含(han)塵(chen)氣(qi)(qi)(qi)(qi)(qi)體(ti)(ti)(ti)進人(ren)氣(qi)(qi)(qi)(qi)(qi)刺叭時,含(han)塵(chen)氣(qi)(qi)(qi)(qi)(qi)體(ti)(ti)(ti)受到氣(qi)(qi)(qi)(qi)(qi)流(liu)(liu)(liu)分(fen)布(bu)板(ban)(ban)以(yi)及折流(liu)(liu)(liu)板(ban)(ban)的(de)(de)(de)(de)(de)(de)調整后,使(shi)氣(qi)(qi)(qi)(qi)(qi)流(liu)(liu)(liu)能(neng)較(jiao)(jiao)均(jun)勻(yun)地進人(ren)電(dian)(dian)(dian)(dian)場(chang)。在(zai)(zai)(zai)橫斷面擴(kuo)大的(de)(de)(de)(de)(de)(de)作(zuo)用下(xia),氣(qi)(qi)(qi)(qi)(qi)流(liu)(liu)(liu)速度(du)迅速降低(di),其中(zhong)有(you)些較(jiao)(jiao)重的(de)(de)(de)(de)(de)(de)塵(chen)粒便失去(qu)速度(du)而沉(chen)降下(xia)來(lai)。進人(ren)電(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)(de)(de)含(han)塵(chen)氣(qi)(qi)(qi)(qi)(qi)體(ti)(ti)(ti)由(you)于(yu)電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)通人(ren)高(gao)壓(ya)直(zhi)流(liu)(liu)(liu)電(dian)(dian)(dian)(dian),則(ze)在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)附近產生電(dian)(dian)(dian)(dian)暈(yun)現象,使(shi)氣(qi)(qi)(qi)(qi)(qi)體(ti)(ti)(ti)電(dian)(dian)(dian)(dian)離(li)(li),電(dian)(dian)(dian)(dian)離(li)(li)后的(de)(de)(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)(qi)體(ti)(ti)(ti)中(zhong)存在(zai)(zai)(zai)大量的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)子和(he)離(li)(li)子,這(zhe)些電(dian)(dian)(dian)(dian)子和(he)離(li)(li)子與進人(ren)電(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)(de)(de)粉(fen)塵(chen)結合起來(lai),使(shi)塵(chen)粒帶電(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)塵(chen)粒在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)場(chang)力(li)的(de)(de)(de)(de)(de)(de)作(zuo)用下(xia)趨向本(ben)設(she)備(bei)陽極(ji)(ji)(ji)(正極(ji)(ji)(ji)、本(ben)設(she)備(bei)采用負高(gao)壓(ya)制)和(he)陰極(ji)(ji)(ji)(負極(ji)(ji)(ji)) , 釋放(fang)(fang)出電(dian)(dian)(dian)(dian)子分(fen)別沉(chen)積在(zai)(zai)(zai)相(xiang)應的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上(shang),通過設(she)備(bei)陰陽極(ji)(ji)(ji)振(zhen)打系統的(de)(de)(de)(de)(de)(de)振(zhen)打,使(shi)沉(chen)積在(zai)(zai)(zai)陰陽電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上(shang)的(de)(de)(de)(de)(de)(de)粉(fen)塵(chen)振(zhen)落,進人(ren)集灰斗 通過排灰裝置放(fang)(fang)出,回(hui)收有(you)物(wu)料,被(bei))凈化的(de)(de)(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)(qi)體(ti)(ti)(ti)排入大氣(qi)(qi)(qi)(qi)(qi)。
工(gong)作(zuo)原理
靜電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器(qi)的(de)(de)工作原理是(shi)(shi)利用高壓電(dian)(dian)(dian)場使(shi)煙氣(qi)發(fa)生電(dian)(dian)(dian)離,氣(qi)流中(zhong)的(de)(de)粉塵(chen)(chen)(chen)(chen)荷(he)電(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)場作用下與氣(qi)流分離。負極(ji)由(you)不同斷面形(xing)(xing)狀的(de)(de)金(jin)屬(shu)(shu)導線制成(cheng),叫(jiao)放電(dian)(dian)(dian)電(dian)(dian)(dian)極(ji)。正(zheng)極(ji)由(you)不同幾何(he)形(xing)(xing)狀的(de)(de)金(jin)屬(shu)(shu)板制成(cheng),叫(jiao)集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)極(ji)。靜電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器(qi)的(de)(de)性能(neng)受粉塵(chen)(chen)(chen)(chen)性質、設備構造和(he)煙氣(qi)流速等三個因素(su)的(de)(de)影響。粉塵(chen)(chen)(chen)(chen)的(de)(de)比電(dian)(dian)(dian)阻(zu)(zu)是(shi)(shi)評價(jia)導電(dian)(dian)(dian)性的(de)(de)指標,它對除(chu)塵(chen)(chen)(chen)(chen)效(xiao)率有直接的(de)(de)影響。比電(dian)(dian)(dian)阻(zu)(zu)過低,塵(chen)(chen)(chen)(chen)粒(li)難以保持在(zai)集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)極(ji)上(shang),致使(shi)其重返(fan)氣(qi)流。比電(dian)(dian)(dian)阻(zu)(zu)過高,到達集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)極(ji)的(de)(de)塵(chen)(chen)(chen)(chen)粒(li)電(dian)(dian)(dian)荷(he)不易放出,在(zai)塵(chen)(chen)(chen)(chen)層之間形(xing)(xing)成(cheng)電(dian)(dian)(dian)壓梯度(du)會產生局部擊穿(chuan)和(he)放電(dian)(dian)(dian)現(xian)象。這(zhe)些情況都會造成(cheng)除(chu)塵(chen)(chen)(chen)(chen)效(xiao)率下降。
電(dian)(dian)(dian)除(chu)塵器的(de)(de)基本(ben)原理是(shi)利用(yong)電(dian)(dian)(dian)力捕(bu)集(ji)煙氣中的(de)(de)粉塵,主(zhu)要包括以下四個相互有關的(de)(de)物理過程(cheng): (1) 氣體(ti)的(de)(de)電(dian)(dian)(dian)離。(2) 粉塵的(de)(de)荷電(dian)(dian)(dian)。(3) 荷電(dian)(dian)(dian)粉塵向電(dian)(dian)(dian)極移動。(4) 荷電(dian)(dian)(dian)粉塵的(de)(de)捕(bu)集(ji)。