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(wo)式(shi)靜電(dian)(dian)除塵(chen)器是以靜電(dian)(dian)凈(jing)化法來收捕廢氣(qi)(qi)中的(de)粉塵(chen),它的(de)凈(jing)化工作上要是依靠電(dian)(dian)暈(yun)極(ji)(ji)和沉(chen)(chen)淀兩個系統來完(wan)成的(de),當含(han)塵(chen)氣(qi)(qi)體進(jin)人(ren)氣(qi)(qi)刺(ci)叭時,含(han)塵(chen)氣(qi)(qi)體受到(dao)氣(qi)(qi)流(liu)分(fen)布板以及折流(liu)板的(de)調整后,使(shi)氣(qi)(qi)流(liu)能較(jiao)均(jun)勻(yun)地進(jin)人(ren)電(dian)(dian)場(chang)。在(zai)橫(heng)斷面擴大的(de)作用(yong)下,氣(qi)(qi)流(liu)速(su)度(du)迅(xun)速(su)降(jiang)低(di),其中有些較(jiao)重的(de)塵(chen)粒(li)(li)便失去速(su)度(du)而沉(chen)(chen)降(jiang)下來。進(jin)人(ren)電(dian)(dian)場(chang)的(de)含(han)塵(chen)氣(qi)(qi)體由于電(dian)(dian)暈(yun)極(ji)(ji)通人(ren)高壓直流(liu)電(dian)(dian),則在(zai)電(dian)(dian)暈(yun)極(ji)(ji)附近產(chan)生電(dian)(dian)暈(yun)現象(xiang),使(shi)氣(qi)(qi)體電(dian)(dian)離,電(dian)(dian)離后的(de)氣(qi)(qi)體中存在(zai)大量的(de)電(dian)(dian)子(zi)和離子(zi),這(zhe)些電(dian)(dian)子(zi)和離子(zi)與進(jin)人(ren)電(dian)(dian)場(chang)的(de)粉塵(chen)結合(he)起來,使(shi)塵(chen)粒(li)(li)帶(dai)電(dian)(dian),帶(dai)電(dian)(dian)塵(chen)粒(li)(li)在(zai)電(dian)(dian)場(chang)力的(de)作用(yong)下趨向(xiang)本設(she)(she)備陽(yang)極(ji)(ji)(正極(ji)(ji)、本設(she)(she)備采用(yong)負高壓制)和陰(yin)極(ji)(ji)(負極(ji)(ji)) , 釋放出(chu)電(dian)(dian)子(zi)分(fen)別(bie)沉(chen)(chen)積在(zai)相應的(de)電(dian)(dian)極(ji)(ji)上,通過(guo)設(she)(she)備陰(yin)陽(yang)極(ji)(ji)振(zhen)(zhen)打系統的(de)振(zhen)(zhen)打,使(shi)沉(chen)(chen)積在(zai)陰(yin)陽(yang)電(dian)(dian)極(ji)(ji)上的(de)粉塵(chen)振(zhen)(zhen)落,進(jin)人(ren)集灰(hui)斗 通過(guo)排灰(hui)裝置放出(chu),回收有物(wu)料(liao),被)凈(jing)化的(de)氣(qi)(qi)體排入大氣(qi)(qi)。
工作原(yuan)理
靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)器的(de)(de)工作(zuo)原理是(shi)利(li)用高(gao)壓電(dian)(dian)(dian)(dian)(dian)(dian)場使煙(yan)(yan)氣發生電(dian)(dian)(dian)(dian)(dian)(dian)離,氣流中的(de)(de)粉塵(chen)(chen)荷電(dian)(dian)(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)場作(zuo)用下與氣流分離。負(fu)極(ji)(ji)由不(bu)同斷面形狀的(de)(de)金(jin)屬(shu)(shu)導(dao)線制(zhi)成(cheng)(cheng)(cheng),叫放電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)。正極(ji)(ji)由不(bu)同幾何形狀的(de)(de)金(jin)屬(shu)(shu)板制(zhi)成(cheng)(cheng)(cheng),叫集塵(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)。靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)器的(de)(de)性能(neng)受粉塵(chen)(chen)性質(zhi)、設(she)備構造(zao)和煙(yan)(yan)氣流速等三個(ge)因素(su)的(de)(de)影(ying)響。粉塵(chen)(chen)的(de)(de)比電(dian)(dian)(dian)(dian)(dian)(dian)阻是(shi)評(ping)價(jia)導(dao)電(dian)(dian)(dian)(dian)(dian)(dian)性的(de)(de)指標,它(ta)對除塵(chen)(chen)效(xiao)率(lv)(lv)有直接的(de)(de)影(ying)響。比電(dian)(dian)(dian)(dian)(dian)(dian)阻過(guo)低,塵(chen)(chen)粒難(nan)以(yi)保持在(zai)集塵(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上,致使其重返氣流。比電(dian)(dian)(dian)(dian)(dian)(dian)阻過(guo)高(gao),到達集塵(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)的(de)(de)塵(chen)(chen)粒電(dian)(dian)(dian)(dian)(dian)(dian)荷不(bu)易放出,在(zai)塵(chen)(chen)層之間形成(cheng)(cheng)(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)壓梯度會(hui)產生局(ju)部擊(ji)穿和放電(dian)(dian)(dian)(dian)(dian)(dian)現象。這些情(qing)況都會(hui)造(zao)成(cheng)(cheng)(cheng)除塵(chen)(chen)效(xiao)率(lv)(lv)下降。
電(dian)(dian)除(chu)塵(chen)(chen)(chen)器的(de)基本原理是利用電(dian)(dian)力捕(bu)集煙氣(qi)(qi)中(zhong)的(de)粉塵(chen)(chen)(chen),主要包括以下四個(ge)相互有關的(de)物理過程: (1) 氣(qi)(qi)體的(de)電(dian)(dian)離。(2) 粉塵(chen)(chen)(chen)的(de)荷(he)電(dian)(dian)。(3) 荷(he)電(dian)(dian)粉塵(chen)(chen)(chen)向(xiang)電(dian)(dian)極(ji)移動(dong)。(4) 荷(he)電(dian)(dian)粉塵(chen)(chen)(chen)的(de)捕(bu)集。