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)(dian)除塵(chen)(chen)器是(shi)(shi)以靜電(dian)(dian)(dian)(dian)(dian)凈(jing)化法來(lai)收(shou)捕廢氣(qi)(qi)(qi)(qi)中(zhong)的(de)(de)(de)粉(fen)塵(chen)(chen),它(ta)的(de)(de)(de)凈(jing)化工(gong)作上要是(shi)(shi)依靠電(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)和(he)沉淀兩(liang)個系統(tong)來(lai)完成的(de)(de)(de),當(dang)含塵(chen)(chen)氣(qi)(qi)(qi)(qi)體(ti)進(jin)(jin)人(ren)氣(qi)(qi)(qi)(qi)刺叭(ba)時,含塵(chen)(chen)氣(qi)(qi)(qi)(qi)體(ti)受到氣(qi)(qi)(qi)(qi)流(liu)(liu)(liu)分布板以及(ji)折流(liu)(liu)(liu)板的(de)(de)(de)調整后,使氣(qi)(qi)(qi)(qi)流(liu)(liu)(liu)能較(jiao)均(jun)勻地(di)進(jin)(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)。在(zai)橫斷面擴大的(de)(de)(de)作用下,氣(qi)(qi)(qi)(qi)流(liu)(liu)(liu)速度(du)迅速降(jiang)低,其中(zhong)有些較(jiao)重的(de)(de)(de)塵(chen)(chen)粒便失去(qu)速度(du)而(er)沉降(jiang)下來(lai)。進(jin)(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)含塵(chen)(chen)氣(qi)(qi)(qi)(qi)體(ti)由于(yu)電(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)通人(ren)高壓(ya)直流(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)附(fu)近(jin)產生電(dian)(dian)(dian)(dian)(dian)暈(yun)現象,使氣(qi)(qi)(qi)(qi)體(ti)電(dian)(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)(dian)離后的(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(zi)(zi)(zi)和(he)離子(zi)(zi)(zi),這些電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)(zi)和(he)離子(zi)(zi)(zi)與進(jin)(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)粉(fen)塵(chen)(chen)結合起來(lai),使塵(chen)(chen)粒帶(dai)電(dian)(dian)(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)粒在(zai)電(dian)(dian)(dian)(dian)(dian)場(chang)力的(de)(de)(de)作用下趨向本(ben)(ben)設備(bei)陽極(ji)(ji)(正極(ji)(ji)、本(ben)(ben)設備(bei)采用負(fu)高壓(ya)制(zhi))和(he)陰(yin)極(ji)(ji)(負(fu)極(ji)(ji)) , 釋放(fang)出(chu)電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)(zi)分別沉積(ji)在(zai)相應的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上,通過(guo)(guo)設備(bei)陰(yin)陽極(ji)(ji)振(zhen)打系統(tong)的(de)(de)(de)振(zhen)打,使沉積(ji)在(zai)陰(yin)陽電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上的(de)(de)(de)粉(fen)塵(chen)(chen)振(zhen)落(luo),進(jin)(jin)人(ren)集灰斗(dou) 通過(guo)(guo)排灰裝置放(fang)出(chu),回收(shou)有物料,被(bei))凈(jing)化的(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)排入(ru)大氣(qi)(qi)(qi)(qi)。
工(gong)作原理
靜(jing)電(dian)(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器的(de)工作原理是利用高壓(ya)電(dian)(dian)(dian)(dian)場使(shi)(shi)煙氣發(fa)生電(dian)(dian)(dian)(dian)離(li)(li),氣流(liu)(liu)中的(de)粉塵(chen)(chen)(chen)(chen)荷(he)電(dian)(dian)(dian)(dian)在(zai)(zai)電(dian)(dian)(dian)(dian)場作用下與氣流(liu)(liu)分離(li)(li)。負(fu)極(ji)由(you)(you)不同斷面形狀的(de)金屬導(dao)線制成(cheng),叫放(fang)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極(ji)。正極(ji)由(you)(you)不同幾何形狀的(de)金屬板制成(cheng),叫集(ji)(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)。靜(jing)電(dian)(dian)(dian)(dian)除(chu)(chu)塵(chen)(chen)(chen)(chen)器的(de)性能受粉塵(chen)(chen)(chen)(chen)性質、設備構造和煙氣流(liu)(liu)速等三個因素的(de)影響。粉塵(chen)(chen)(chen)(chen)的(de)比(bi)(bi)電(dian)(dian)(dian)(dian)阻是評價導(dao)電(dian)(dian)(dian)(dian)性的(de)指標,它對(dui)除(chu)(chu)塵(chen)(chen)(chen)(chen)效(xiao)(xiao)率有直接(jie)的(de)影響。比(bi)(bi)電(dian)(dian)(dian)(dian)阻過(guo)低(di),塵(chen)(chen)(chen)(chen)粒難以保持(chi)在(zai)(zai)集(ji)(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)上,致使(shi)(shi)其重返氣流(liu)(liu)。比(bi)(bi)電(dian)(dian)(dian)(dian)阻過(guo)高,到達集(ji)(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)的(de)塵(chen)(chen)(chen)(chen)粒電(dian)(dian)(dian)(dian)荷(he)不易放(fang)出(chu),在(zai)(zai)塵(chen)(chen)(chen)(chen)層之(zhi)間形成(cheng)電(dian)(dian)(dian)(dian)壓(ya)梯度會(hui)產(chan)生局部擊穿和放(fang)電(dian)(dian)(dian)(dian)現象。這些情況都會(hui)造成(cheng)除(chu)(chu)塵(chen)(chen)(chen)(chen)效(xiao)(xiao)率下降。
電(dian)除(chu)塵(chen)器的(de)基(ji)本原理是利用電(dian)力(li)捕(bu)集煙氣(qi)中的(de)粉(fen)塵(chen),主要(yao)包括以(yi)下四個相互有關的(de)物理過程: (1) 氣(qi)體的(de)電(dian)離。(2) 粉(fen)塵(chen)的(de)荷(he)電(dian)。(3) 荷(he)電(dian)粉(fen)塵(chen)向電(dian)極移動。(4) 荷(he)電(dian)粉(fen)塵(chen)的(de)捕(bu)集。