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)(dian)除塵(chen)(chen)器(qi)是以(yi)靜電(dian)(dian)(dian)(dian)(dian)凈(jing)化法來收(shou)捕廢氣(qi)中的粉塵(chen)(chen),它的凈(jing)化工作(zuo)上要是依靠電(dian)(dian)(dian)(dian)(dian)暈極(ji)和沉(chen)淀兩個(ge)系統(tong)來完(wan)成的,當含(han)塵(chen)(chen)氣(qi)體(ti)進(jin)人(ren)氣(qi)刺叭時,含(han)塵(chen)(chen)氣(qi)體(ti)受到氣(qi)流(liu)(liu)分布板以(yi)及(ji)折流(liu)(liu)板的調整(zheng)后(hou),使氣(qi)流(liu)(liu)能較均(jun)勻(yun)地進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)(chang)。在(zai)橫斷面擴大的作(zuo)用(yong)下,氣(qi)流(liu)(liu)速(su)度迅速(su)降(jiang)(jiang)低(di),其中有些較重的塵(chen)(chen)粒(li)便失去速(su)度而沉(chen)降(jiang)(jiang)下來。進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)(chang)的含(han)塵(chen)(chen)氣(qi)體(ti)由于電(dian)(dian)(dian)(dian)(dian)暈極(ji)通(tong)人(ren)高壓(ya)直流(liu)(liu)電(dian)(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)(dian)暈極(ji)附(fu)近產生電(dian)(dian)(dian)(dian)(dian)暈現象,使氣(qi)體(ti)電(dian)(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)(dian)離后(hou)的氣(qi)體(ti)中存在(zai)大量的電(dian)(dian)(dian)(dian)(dian)子和離子,這些電(dian)(dian)(dian)(dian)(dian)子和離子與(yu)進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)(chang)的粉塵(chen)(chen)結(jie)合起(qi)來,使塵(chen)(chen)粒(li)帶(dai)電(dian)(dian)(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)粒(li)在(zai)電(dian)(dian)(dian)(dian)(dian)場(chang)(chang)力的作(zuo)用(yong)下趨(qu)向本(ben)設備陽(yang)極(ji)(正極(ji)、本(ben)設備采用(yong)負高壓(ya)制)和陰極(ji)(負極(ji)) , 釋(shi)放(fang)出電(dian)(dian)(dian)(dian)(dian)子分別沉(chen)積在(zai)相應的電(dian)(dian)(dian)(dian)(dian)極(ji)上,通(tong)過(guo)設備陰陽(yang)極(ji)振(zhen)(zhen)打(da)系統(tong)的振(zhen)(zhen)打(da),使沉(chen)積在(zai)陰陽(yang)電(dian)(dian)(dian)(dian)(dian)極(ji)上的粉塵(chen)(chen)振(zhen)(zhen)落,進(jin)人(ren)集灰(hui)斗(dou) 通(tong)過(guo)排灰(hui)裝置(zhi)放(fang)出,回收(shou)有物料,被)凈(jing)化的氣(qi)體(ti)排入(ru)大氣(qi)。
工(gong)作(zuo)原理
靜電(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)器(qi)的(de)(de)工(gong)作原理(li)是(shi)利用高(gao)壓(ya)電(dian)(dian)(dian)(dian)(dian)(dian)場使煙(yan)氣(qi)發生(sheng)電(dian)(dian)(dian)(dian)(dian)(dian)離,氣(qi)流(liu)中的(de)(de)粉(fen)塵(chen)荷電(dian)(dian)(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)場作用下與氣(qi)流(liu)分離。負極(ji)(ji)由不同斷面(mian)形狀(zhuang)的(de)(de)金(jin)(jin)屬導線(xian)制成(cheng),叫(jiao)(jiao)放電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)。正極(ji)(ji)由不同幾何形狀(zhuang)的(de)(de)金(jin)(jin)屬板制成(cheng),叫(jiao)(jiao)集塵(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)。靜電(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)器(qi)的(de)(de)性(xing)能受粉(fen)塵(chen)性(xing)質、設備構造和煙(yan)氣(qi)流(liu)速等三個因素的(de)(de)影(ying)響(xiang)。粉(fen)塵(chen)的(de)(de)比電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)是(shi)評(ping)價導電(dian)(dian)(dian)(dian)(dian)(dian)性(xing)的(de)(de)指標,它(ta)對除(chu)塵(chen)效率(lv)有直接(jie)的(de)(de)影(ying)響(xiang)。比電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)過(guo)低,塵(chen)粒(li)難以保持在(zai)集塵(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上,致使其(qi)重返氣(qi)流(liu)。比電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)過(guo)高(gao),到達集塵(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)的(de)(de)塵(chen)粒(li)電(dian)(dian)(dian)(dian)(dian)(dian)荷不易放出,在(zai)塵(chen)層之(zhi)間形成(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)梯(ti)度會(hui)產(chan)生(sheng)局(ju)部擊穿和放電(dian)(dian)(dian)(dian)(dian)(dian)現象。這些情況(kuang)都會(hui)造成(cheng)除(chu)塵(chen)效率(lv)下降。
電(dian)(dian)(dian)(dian)除塵器的(de)(de)基(ji)本原理是利用(yong)電(dian)(dian)(dian)(dian)力捕集(ji)煙氣中的(de)(de)粉(fen)(fen)塵,主(zhu)要包括以下四個相(xiang)互有關的(de)(de)物理過(guo)程(cheng): (1) 氣體(ti)(ti)的(de)(de)電(dian)(dian)(dian)(dian)離。(2) 粉(fen)(fen)塵的(de)(de)荷(he)(he)電(dian)(dian)(dian)(dian)。(3) 荷(he)(he)電(dian)(dian)(dian)(dian)粉(fen)(fen)塵向電(dian)(dian)(dian)(dian)極移動。(4) 荷(he)(he)電(dian)(dian)(dian)(dian)粉(fen)(fen)塵的(de)(de)捕集(ji)。