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(jing)電(dian)(dian)除塵(chen)(chen)器是以靜(jing)電(dian)(dian)凈化法(fa)來(lai)收(shou)捕廢(fei)氣(qi)中的(de)(de)(de)粉(fen)塵(chen)(chen),它的(de)(de)(de)凈化工作上(shang)要是依(yi)靠電(dian)(dian)暈極(ji)(ji)(ji)(ji)和沉(chen)淀兩個系(xi)統(tong)來(lai)完成的(de)(de)(de),當含塵(chen)(chen)氣(qi)體(ti)(ti)進(jin)人(ren)氣(qi)刺叭(ba)時,含塵(chen)(chen)氣(qi)體(ti)(ti)受到氣(qi)流(liu)分布板以及(ji)折流(liu)板的(de)(de)(de)調整后,使(shi)氣(qi)流(liu)能較均勻(yun)地進(jin)人(ren)電(dian)(dian)場。在(zai)(zai)橫(heng)斷面(mian)擴(kuo)大(da)的(de)(de)(de)作用下(xia),氣(qi)流(liu)速度(du)迅速降低(di),其中有(you)些(xie)較重的(de)(de)(de)塵(chen)(chen)粒便失去速度(du)而(er)沉(chen)降下(xia)來(lai)。進(jin)人(ren)電(dian)(dian)場的(de)(de)(de)含塵(chen)(chen)氣(qi)體(ti)(ti)由于電(dian)(dian)暈極(ji)(ji)(ji)(ji)通(tong)人(ren)高壓直(zhi)流(liu)電(dian)(dian),則(ze)在(zai)(zai)電(dian)(dian)暈極(ji)(ji)(ji)(ji)附近(jin)產生電(dian)(dian)暈現(xian)象(xiang),使(shi)氣(qi)體(ti)(ti)電(dian)(dian)離(li)(li),電(dian)(dian)離(li)(li)后的(de)(de)(de)氣(qi)體(ti)(ti)中存(cun)在(zai)(zai)大(da)量的(de)(de)(de)電(dian)(dian)子(zi)(zi)和離(li)(li)子(zi)(zi),這些(xie)電(dian)(dian)子(zi)(zi)和離(li)(li)子(zi)(zi)與(yu)進(jin)人(ren)電(dian)(dian)場的(de)(de)(de)粉(fen)塵(chen)(chen)結(jie)合起來(lai),使(shi)塵(chen)(chen)粒帶電(dian)(dian),帶電(dian)(dian)塵(chen)(chen)粒在(zai)(zai)電(dian)(dian)場力的(de)(de)(de)作用下(xia)趨向本(ben)設(she)備陽(yang)極(ji)(ji)(ji)(ji)(正極(ji)(ji)(ji)(ji)、本(ben)設(she)備采用負高壓制)和陰(yin)極(ji)(ji)(ji)(ji)(負極(ji)(ji)(ji)(ji)) , 釋放出(chu)電(dian)(dian)子(zi)(zi)分別沉(chen)積在(zai)(zai)相應的(de)(de)(de)電(dian)(dian)極(ji)(ji)(ji)(ji)上(shang),通(tong)過設(she)備陰(yin)陽(yang)極(ji)(ji)(ji)(ji)振(zhen)打系(xi)統(tong)的(de)(de)(de)振(zhen)打,使(shi)沉(chen)積在(zai)(zai)陰(yin)陽(yang)電(dian)(dian)極(ji)(ji)(ji)(ji)上(shang)的(de)(de)(de)粉(fen)塵(chen)(chen)振(zhen)落(luo),進(jin)人(ren)集灰斗 通(tong)過排灰裝置放出(chu),回收(shou)有(you)物料(liao),被(bei))凈化的(de)(de)(de)氣(qi)體(ti)(ti)排入大(da)氣(qi)。
工作原理
靜電(dian)(dian)除(chu)塵(chen)(chen)(chen)器(qi)的(de)(de)工作原(yuan)理(li)是(shi)利(li)用高壓電(dian)(dian)場(chang)使煙(yan)氣(qi)(qi)發生電(dian)(dian)離,氣(qi)(qi)流(liu)(liu)(liu)中(zhong)的(de)(de)粉(fen)塵(chen)(chen)(chen)荷(he)電(dian)(dian)在電(dian)(dian)場(chang)作用下與(yu)氣(qi)(qi)流(liu)(liu)(liu)分離。負極(ji)由不同斷面形狀(zhuang)的(de)(de)金屬導線制(zhi)成(cheng)(cheng),叫(jiao)放(fang)電(dian)(dian)電(dian)(dian)極(ji)。正(zheng)極(ji)由不同幾何(he)形狀(zhuang)的(de)(de)金屬板制(zhi)成(cheng)(cheng),叫(jiao)集(ji)塵(chen)(chen)(chen)電(dian)(dian)極(ji)。靜電(dian)(dian)除(chu)塵(chen)(chen)(chen)器(qi)的(de)(de)性能(neng)受(shou)粉(fen)塵(chen)(chen)(chen)性質、設備構造和煙(yan)氣(qi)(qi)流(liu)(liu)(liu)速等三個因素的(de)(de)影(ying)響。粉(fen)塵(chen)(chen)(chen)的(de)(de)比(bi)電(dian)(dian)阻(zu)是(shi)評價導電(dian)(dian)性的(de)(de)指標,它(ta)對除(chu)塵(chen)(chen)(chen)效(xiao)率(lv)有(you)直接(jie)的(de)(de)影(ying)響。比(bi)電(dian)(dian)阻(zu)過低(di),塵(chen)(chen)(chen)粒(li)難以保持在集(ji)塵(chen)(chen)(chen)電(dian)(dian)極(ji)上(shang),致使其重(zhong)返氣(qi)(qi)流(liu)(liu)(liu)。比(bi)電(dian)(dian)阻(zu)過高,到達集(ji)塵(chen)(chen)(chen)電(dian)(dian)極(ji)的(de)(de)塵(chen)(chen)(chen)粒(li)電(dian)(dian)荷(he)不易放(fang)出(chu),在塵(chen)(chen)(chen)層之間形成(cheng)(cheng)電(dian)(dian)壓梯度會產生局部擊穿和放(fang)電(dian)(dian)現象。這些情(qing)況都(dou)會造成(cheng)(cheng)除(chu)塵(chen)(chen)(chen)效(xiao)率(lv)下降。
電(dian)(dian)(dian)除塵(chen)(chen)器(qi)的(de)基本原理(li)是利(li)用電(dian)(dian)(dian)力捕(bu)集(ji)煙氣中(zhong)的(de)粉(fen)塵(chen)(chen),主要包括以(yi)下(xia)四個相互(hu)有(you)關(guan)的(de)物理(li)過程: (1) 氣體的(de)電(dian)(dian)(dian)離。(2) 粉(fen)塵(chen)(chen)的(de)荷電(dian)(dian)(dian)。(3) 荷電(dian)(dian)(dian)粉(fen)塵(chen)(chen)向電(dian)(dian)(dian)極移動(dong)。(4) 荷電(dian)(dian)(dian)粉(fen)塵(chen)(chen)的(de)捕(bu)集(ji)。