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(shi)靜(jing)電(dian)(dian)(dian)除塵(chen)(chen)器是(shi)(shi)以(yi)靜(jing)電(dian)(dian)(dian)凈化(hua)法(fa)來(lai)收(shou)捕(bu)廢氣(qi)(qi)(qi)中(zhong)的(de)(de)(de)粉塵(chen)(chen),它的(de)(de)(de)凈化(hua)工作(zuo)(zuo)上要是(shi)(shi)依靠(kao)電(dian)(dian)(dian)暈(yun)極和(he)沉(chen)淀(dian)兩個系統來(lai)完成的(de)(de)(de),當(dang)含塵(chen)(chen)氣(qi)(qi)(qi)體進人(ren)(ren)氣(qi)(qi)(qi)刺叭時,含塵(chen)(chen)氣(qi)(qi)(qi)體受到(dao)氣(qi)(qi)(qi)流分布板以(yi)及折流板的(de)(de)(de)調整后,使(shi)(shi)氣(qi)(qi)(qi)流能(neng)較(jiao)均勻(yun)地(di)進人(ren)(ren)電(dian)(dian)(dian)場。在(zai)(zai)橫(heng)斷面擴大(da)的(de)(de)(de)作(zuo)(zuo)用(yong)下,氣(qi)(qi)(qi)流速(su)度迅速(su)降(jiang)低,其中(zhong)有些(xie)較(jiao)重的(de)(de)(de)塵(chen)(chen)粒便(bian)失去速(su)度而沉(chen)降(jiang)下來(lai)。進人(ren)(ren)電(dian)(dian)(dian)場的(de)(de)(de)含塵(chen)(chen)氣(qi)(qi)(qi)體由于電(dian)(dian)(dian)暈(yun)極通人(ren)(ren)高壓直(zhi)流電(dian)(dian)(dian),則在(zai)(zai)電(dian)(dian)(dian)暈(yun)極附近產生電(dian)(dian)(dian)暈(yun)現象(xiang),使(shi)(shi)氣(qi)(qi)(qi)體電(dian)(dian)(dian)離(li),電(dian)(dian)(dian)離(li)后的(de)(de)(de)氣(qi)(qi)(qi)體中(zhong)存在(zai)(zai)大(da)量的(de)(de)(de)電(dian)(dian)(dian)子(zi)和(he)離(li)子(zi),這些(xie)電(dian)(dian)(dian)子(zi)和(he)離(li)子(zi)與進人(ren)(ren)電(dian)(dian)(dian)場的(de)(de)(de)粉塵(chen)(chen)結合起來(lai),使(shi)(shi)塵(chen)(chen)粒帶電(dian)(dian)(dian),帶電(dian)(dian)(dian)塵(chen)(chen)粒在(zai)(zai)電(dian)(dian)(dian)場力的(de)(de)(de)作(zuo)(zuo)用(yong)下趨(qu)向本設備陽極(正極、本設備采(cai)用(yong)負(fu)高壓制(zhi))和(he)陰(yin)極(負(fu)極) , 釋放(fang)出電(dian)(dian)(dian)子(zi)分別(bie)沉(chen)積在(zai)(zai)相應的(de)(de)(de)電(dian)(dian)(dian)極上,通過(guo)設備陰(yin)陽極振(zhen)打(da)系統的(de)(de)(de)振(zhen)打(da),使(shi)(shi)沉(chen)積在(zai)(zai)陰(yin)陽電(dian)(dian)(dian)極上的(de)(de)(de)粉塵(chen)(chen)振(zhen)落(luo),進人(ren)(ren)集灰斗 通過(guo)排(pai)灰裝置放(fang)出,回收(shou)有物料,被)凈化(hua)的(de)(de)(de)氣(qi)(qi)(qi)體排(pai)入大(da)氣(qi)(qi)(qi)。
工作原理
靜電(dian)(dian)(dian)(dian)除(chu)塵(chen)器(qi)的(de)工作原理是(shi)利用高壓(ya)電(dian)(dian)(dian)(dian)場(chang)使煙氣(qi)發生電(dian)(dian)(dian)(dian)離,氣(qi)流(liu)中的(de)粉(fen)塵(chen)荷電(dian)(dian)(dian)(dian)在(zai)(zai)電(dian)(dian)(dian)(dian)場(chang)作用下與氣(qi)流(liu)分離。負(fu)極(ji)由不(bu)同斷面形狀(zhuang)的(de)金(jin)(jin)屬(shu)導線制(zhi)成(cheng),叫放電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極(ji)。正極(ji)由不(bu)同幾何形狀(zhuang)的(de)金(jin)(jin)屬(shu)板制(zhi)成(cheng),叫集(ji)塵(chen)電(dian)(dian)(dian)(dian)極(ji)。靜電(dian)(dian)(dian)(dian)除(chu)塵(chen)器(qi)的(de)性(xing)(xing)能受粉(fen)塵(chen)性(xing)(xing)質、設備構造和煙氣(qi)流(liu)速等三(san)個因素(su)的(de)影響(xiang)。粉(fen)塵(chen)的(de)比電(dian)(dian)(dian)(dian)阻(zu)是(shi)評價導電(dian)(dian)(dian)(dian)性(xing)(xing)的(de)指標,它對除(chu)塵(chen)效(xiao)率(lv)有直接的(de)影響(xiang)。比電(dian)(dian)(dian)(dian)阻(zu)過低(di),塵(chen)粒(li)難以保(bao)持(chi)在(zai)(zai)集(ji)塵(chen)電(dian)(dian)(dian)(dian)極(ji)上,致使其重返氣(qi)流(liu)。比電(dian)(dian)(dian)(dian)阻(zu)過高,到達(da)集(ji)塵(chen)電(dian)(dian)(dian)(dian)極(ji)的(de)塵(chen)粒(li)電(dian)(dian)(dian)(dian)荷不(bu)易(yi)放出(chu),在(zai)(zai)塵(chen)層之間形成(cheng)電(dian)(dian)(dian)(dian)壓(ya)梯度會產生局部擊穿和放電(dian)(dian)(dian)(dian)現象。這些情況都會造成(cheng)除(chu)塵(chen)效(xiao)率(lv)下降。
電(dian)除(chu)塵(chen)(chen)器的基(ji)本原理是(shi)利用電(dian)力捕(bu)(bu)集煙氣中(zhong)的粉(fen)塵(chen)(chen),主要包括以下四個相互有關的物理過程: (1) 氣體的電(dian)離。(2) 粉(fen)塵(chen)(chen)的荷電(dian)。(3) 荷電(dian)粉(fen)塵(chen)(chen)向電(dian)極移(yi)動。(4) 荷電(dian)粉(fen)塵(chen)(chen)的捕(bu)(bu)集。