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)(dian)(dian)(dian)(dian)(dian)(dian)(dian)除塵(chen)器是以靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)凈(jing)化法(fa)來(lai)收捕(bu)廢氣(qi)中(zhong)的(de)(de)(de)(de)(de)(de)粉(fen)塵(chen),它的(de)(de)(de)(de)(de)(de)凈(jing)化工作(zuo)上(shang)(shang)要是依靠電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)和(he)沉淀兩(liang)個系(xi)(xi)統(tong)來(lai)完成的(de)(de)(de)(de)(de)(de),當含(han)塵(chen)氣(qi)體(ti)進(jin)(jin)人(ren)氣(qi)刺叭時,含(han)塵(chen)氣(qi)體(ti)受(shou)到(dao)氣(qi)流(liu)分布板以及折流(liu)板的(de)(de)(de)(de)(de)(de)調整后(hou),使氣(qi)流(liu)能(neng)較均勻地進(jin)(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)(chang)。在橫(heng)斷面擴大的(de)(de)(de)(de)(de)(de)作(zuo)用下(xia),氣(qi)流(liu)速度迅速降低,其中(zhong)有些較重(zhong)的(de)(de)(de)(de)(de)(de)塵(chen)粒(li)便失(shi)去速度而沉降下(xia)來(lai)。進(jin)(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)(chang)的(de)(de)(de)(de)(de)(de)含(han)塵(chen)氣(qi)體(ti)由于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)通(tong)(tong)人(ren)高壓(ya)直流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian),則在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)附近產生電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)現象,使氣(qi)體(ti)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)離(li)后(hou)的(de)(de)(de)(de)(de)(de)氣(qi)體(ti)中(zhong)存(cun)在大量(liang)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)(zi)和(he)離(li)子(zi)(zi)(zi),這些電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)(zi)和(he)離(li)子(zi)(zi)(zi)與進(jin)(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)(chang)的(de)(de)(de)(de)(de)(de)粉(fen)塵(chen)結合起來(lai),使塵(chen)粒(li)帶(dai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)塵(chen)粒(li)在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)(chang)力的(de)(de)(de)(de)(de)(de)作(zuo)用下(xia)趨(qu)向本(ben)設(she)備陽極(ji)(ji)(正極(ji)(ji)、本(ben)設(she)備采用負高壓(ya)制)和(he)陰極(ji)(ji)(負極(ji)(ji)) , 釋放出電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)(zi)分別沉積(ji)在相應的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上(shang)(shang),通(tong)(tong)過(guo)設(she)備陰陽極(ji)(ji)振打系(xi)(xi)統(tong)的(de)(de)(de)(de)(de)(de)振打,使沉積(ji)在陰陽電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上(shang)(shang)的(de)(de)(de)(de)(de)(de)粉(fen)塵(chen)振落,進(jin)(jin)人(ren)集灰(hui)斗 通(tong)(tong)過(guo)排灰(hui)裝置(zhi)放出,回收有物(wu)料,被)凈(jing)化的(de)(de)(de)(de)(de)(de)氣(qi)體(ti)排入(ru)大氣(qi)。
工作原(yuan)理(li)
靜電(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)(chen)器的(de)工作原理是(shi)利用高壓(ya)電(dian)(dian)(dian)(dian)場使煙氣發生電(dian)(dian)(dian)(dian)離,氣流(liu)中的(de)粉(fen)塵(chen)(chen)(chen)(chen)荷電(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)場作用下與氣流(liu)分離。負極(ji)由不同斷面形狀的(de)金屬(shu)導線制成(cheng),叫放電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極(ji)。正極(ji)由不同幾何形狀的(de)金屬(shu)板(ban)制成(cheng),叫集塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)。靜電(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)(chen)器的(de)性能受粉(fen)塵(chen)(chen)(chen)(chen)性質、設備(bei)構造和煙氣流(liu)速等三(san)個因素(su)的(de)影響。粉(fen)塵(chen)(chen)(chen)(chen)的(de)比(bi)電(dian)(dian)(dian)(dian)阻(zu)(zu)是(shi)評價導電(dian)(dian)(dian)(dian)性的(de)指標,它(ta)對除塵(chen)(chen)(chen)(chen)效(xiao)(xiao)率有直接的(de)影響。比(bi)電(dian)(dian)(dian)(dian)阻(zu)(zu)過(guo)低,塵(chen)(chen)(chen)(chen)粒(li)難以保持在集塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)上(shang),致使其重返氣流(liu)。比(bi)電(dian)(dian)(dian)(dian)阻(zu)(zu)過(guo)高,到達集塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)的(de)塵(chen)(chen)(chen)(chen)粒(li)電(dian)(dian)(dian)(dian)荷不易(yi)放出(chu),在塵(chen)(chen)(chen)(chen)層之(zhi)間形成(cheng)電(dian)(dian)(dian)(dian)壓(ya)梯度會(hui)(hui)產生局部擊穿(chuan)和放電(dian)(dian)(dian)(dian)現(xian)象。這些(xie)情(qing)況都會(hui)(hui)造成(cheng)除塵(chen)(chen)(chen)(chen)效(xiao)(xiao)率下降。
電(dian)除(chu)塵(chen)(chen)器的(de)(de)(de)基本原理(li)(li)是利用電(dian)力捕集(ji)煙(yan)氣(qi)中(zhong)的(de)(de)(de)粉(fen)塵(chen)(chen),主要包(bao)括以(yi)下四個相互有(you)關的(de)(de)(de)物理(li)(li)過程: (1) 氣(qi)體的(de)(de)(de)電(dian)離。(2) 粉(fen)塵(chen)(chen)的(de)(de)(de)荷(he)電(dian)。(3) 荷(he)電(dian)粉(fen)塵(chen)(chen)向電(dian)極移(yi)動。(4) 荷(he)電(dian)粉(fen)塵(chen)(chen)的(de)(de)(de)捕集(ji)。