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)(dian)除塵(chen)(chen)(chen)(chen)器是以靜電(dian)(dian)(dian)(dian)凈(jing)(jing)化(hua)法(fa)來(lai)收捕廢氣(qi)(qi)(qi)(qi)(qi)(qi)中的(de)粉塵(chen)(chen)(chen)(chen),它的(de)凈(jing)(jing)化(hua)工作上(shang)要是依靠(kao)電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)和(he)(he)沉淀兩個系統(tong)來(lai)完成的(de),當含塵(chen)(chen)(chen)(chen)氣(qi)(qi)(qi)(qi)(qi)(qi)體(ti)(ti)進(jin)(jin)人氣(qi)(qi)(qi)(qi)(qi)(qi)刺叭時(shi),含塵(chen)(chen)(chen)(chen)氣(qi)(qi)(qi)(qi)(qi)(qi)體(ti)(ti)受(shou)到氣(qi)(qi)(qi)(qi)(qi)(qi)流(liu)(liu)分(fen)布板(ban)以及(ji)折(zhe)流(liu)(liu)板(ban)的(de)調整(zheng)后,使(shi)氣(qi)(qi)(qi)(qi)(qi)(qi)流(liu)(liu)能較均勻地進(jin)(jin)人電(dian)(dian)(dian)(dian)場(chang)(chang)。在(zai)橫(heng)斷面擴(kuo)大的(de)作用(yong)下(xia),氣(qi)(qi)(qi)(qi)(qi)(qi)流(liu)(liu)速度(du)迅速降低,其中有些(xie)較重(zhong)的(de)塵(chen)(chen)(chen)(chen)粒便(bian)失(shi)去(qu)速度(du)而(er)沉降下(xia)來(lai)。進(jin)(jin)人電(dian)(dian)(dian)(dian)場(chang)(chang)的(de)含塵(chen)(chen)(chen)(chen)氣(qi)(qi)(qi)(qi)(qi)(qi)體(ti)(ti)由(you)于電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)通人高壓(ya)直流(liu)(liu)電(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)附近(jin)產生電(dian)(dian)(dian)(dian)暈(yun)現象(xiang),使(shi)氣(qi)(qi)(qi)(qi)(qi)(qi)體(ti)(ti)電(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)離后的(de)氣(qi)(qi)(qi)(qi)(qi)(qi)體(ti)(ti)中存(cun)在(zai)大量的(de)電(dian)(dian)(dian)(dian)子(zi)(zi)和(he)(he)離子(zi)(zi),這些(xie)電(dian)(dian)(dian)(dian)子(zi)(zi)和(he)(he)離子(zi)(zi)與進(jin)(jin)人電(dian)(dian)(dian)(dian)場(chang)(chang)的(de)粉塵(chen)(chen)(chen)(chen)結合起來(lai),使(shi)塵(chen)(chen)(chen)(chen)粒帶(dai)電(dian)(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)(dian)塵(chen)(chen)(chen)(chen)粒在(zai)電(dian)(dian)(dian)(dian)場(chang)(chang)力(li)的(de)作用(yong)下(xia)趨(qu)向本設備(bei)陽(yang)(yang)極(ji)(ji)(正極(ji)(ji)、本設備(bei)采用(yong)負(fu)高壓(ya)制)和(he)(he)陰(yin)極(ji)(ji)(負(fu)極(ji)(ji)) , 釋放出電(dian)(dian)(dian)(dian)子(zi)(zi)分(fen)別(bie)沉積在(zai)相應的(de)電(dian)(dian)(dian)(dian)極(ji)(ji)上(shang),通過設備(bei)陰(yin)陽(yang)(yang)極(ji)(ji)振(zhen)打系統(tong)的(de)振(zhen)打,使(shi)沉積在(zai)陰(yin)陽(yang)(yang)電(dian)(dian)(dian)(dian)極(ji)(ji)上(shang)的(de)粉塵(chen)(chen)(chen)(chen)振(zhen)落,進(jin)(jin)人集灰(hui)斗 通過排(pai)灰(hui)裝置放出,回收有物料,被)凈(jing)(jing)化(hua)的(de)氣(qi)(qi)(qi)(qi)(qi)(qi)體(ti)(ti)排(pai)入大氣(qi)(qi)(qi)(qi)(qi)(qi)。
工(gong)作原理
靜電(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)器的(de)(de)(de)(de)工作原(yuan)理是利用高(gao)壓電(dian)(dian)(dian)場(chang)(chang)使煙(yan)(yan)氣(qi)(qi)(qi)發生(sheng)電(dian)(dian)(dian)離(li),氣(qi)(qi)(qi)流(liu)中(zhong)的(de)(de)(de)(de)粉塵(chen)(chen)荷電(dian)(dian)(dian)在電(dian)(dian)(dian)場(chang)(chang)作用下與氣(qi)(qi)(qi)流(liu)分離(li)。負極(ji)由不(bu)同斷面(mian)形狀的(de)(de)(de)(de)金屬導線制成,叫放電(dian)(dian)(dian)電(dian)(dian)(dian)極(ji)。正極(ji)由不(bu)同幾何(he)形狀的(de)(de)(de)(de)金屬板制成,叫集塵(chen)(chen)電(dian)(dian)(dian)極(ji)。靜電(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)器的(de)(de)(de)(de)性能受粉塵(chen)(chen)性質、設備構造和(he)煙(yan)(yan)氣(qi)(qi)(qi)流(liu)速等三個因素的(de)(de)(de)(de)影響。粉塵(chen)(chen)的(de)(de)(de)(de)比(bi)(bi)電(dian)(dian)(dian)阻(zu)是評價導電(dian)(dian)(dian)性的(de)(de)(de)(de)指(zhi)標,它對除(chu)(chu)塵(chen)(chen)效率(lv)有直接的(de)(de)(de)(de)影響。比(bi)(bi)電(dian)(dian)(dian)阻(zu)過(guo)(guo)低(di),塵(chen)(chen)粒難以保持在集塵(chen)(chen)電(dian)(dian)(dian)極(ji)上,致使其重返氣(qi)(qi)(qi)流(liu)。比(bi)(bi)電(dian)(dian)(dian)阻(zu)過(guo)(guo)高(gao),到達集塵(chen)(chen)電(dian)(dian)(dian)極(ji)的(de)(de)(de)(de)塵(chen)(chen)粒電(dian)(dian)(dian)荷不(bu)易放出,在塵(chen)(chen)層之(zhi)間形成電(dian)(dian)(dian)壓梯度(du)會產生(sheng)局部擊穿和(he)放電(dian)(dian)(dian)現象。這些情況都會造成除(chu)(chu)塵(chen)(chen)效率(lv)下降。
電(dian)(dian)除塵(chen)器的(de)基本(ben)原理是利用電(dian)(dian)力捕集(ji)煙氣(qi)中的(de)粉(fen)塵(chen),主(zhu)要(yao)包括以下四(si)個相(xiang)互有關的(de)物理過(guo)程: (1) 氣(qi)體(ti)的(de)電(dian)(dian)離。(2) 粉(fen)塵(chen)的(de)荷(he)電(dian)(dian)。(3) 荷(he)電(dian)(dian)粉(fen)塵(chen)向電(dian)(dian)極移動。(4) 荷(he)電(dian)(dian)粉(fen)塵(chen)的(de)捕集(ji)。