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)式靜電(dian)(dian)(dian)除塵(chen)(chen)器是以(yi)靜電(dian)(dian)(dian)凈化法來收(shou)捕廢氣(qi)(qi)(qi)(qi)中(zhong)(zhong)的(de)(de)(de)(de)粉(fen)塵(chen)(chen),它的(de)(de)(de)(de)凈化工作(zuo)上要是依靠電(dian)(dian)(dian)暈(yun)(yun)極(ji)和沉淀兩(liang)個系統來完成的(de)(de)(de)(de),當含(han)塵(chen)(chen)氣(qi)(qi)(qi)(qi)體進(jin)(jin)人氣(qi)(qi)(qi)(qi)刺叭時,含(han)塵(chen)(chen)氣(qi)(qi)(qi)(qi)體受到氣(qi)(qi)(qi)(qi)流(liu)(liu)分布板以(yi)及折流(liu)(liu)板的(de)(de)(de)(de)調整后,使(shi)氣(qi)(qi)(qi)(qi)流(liu)(liu)能(neng)較均勻(yun)地(di)進(jin)(jin)人電(dian)(dian)(dian)場(chang)。在(zai)橫斷(duan)面(mian)擴大的(de)(de)(de)(de)作(zuo)用(yong)(yong)(yong)下,氣(qi)(qi)(qi)(qi)流(liu)(liu)速(su)度迅速(su)降低,其(qi)中(zhong)(zhong)有些較重的(de)(de)(de)(de)塵(chen)(chen)粒便(bian)失去(qu)速(su)度而沉降下來。進(jin)(jin)人電(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)含(han)塵(chen)(chen)氣(qi)(qi)(qi)(qi)體由于(yu)電(dian)(dian)(dian)暈(yun)(yun)極(ji)通(tong)人高壓直流(liu)(liu)電(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)暈(yun)(yun)極(ji)附近產(chan)生電(dian)(dian)(dian)暈(yun)(yun)現象,使(shi)氣(qi)(qi)(qi)(qi)體電(dian)(dian)(dian)離(li)(li),電(dian)(dian)(dian)離(li)(li)后的(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)體中(zhong)(zhong)存在(zai)大量的(de)(de)(de)(de)電(dian)(dian)(dian)子(zi)(zi)和離(li)(li)子(zi)(zi),這些電(dian)(dian)(dian)子(zi)(zi)和離(li)(li)子(zi)(zi)與進(jin)(jin)人電(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)粉(fen)塵(chen)(chen)結(jie)合起來,使(shi)塵(chen)(chen)粒帶(dai)電(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)塵(chen)(chen)粒在(zai)電(dian)(dian)(dian)場(chang)力的(de)(de)(de)(de)作(zuo)用(yong)(yong)(yong)下趨向本(ben)設備陽極(ji)(正極(ji)、本(ben)設備采用(yong)(yong)(yong)負高壓制)和陰(yin)(yin)極(ji)(負極(ji)) , 釋放(fang)出電(dian)(dian)(dian)子(zi)(zi)分別沉積在(zai)相應的(de)(de)(de)(de)電(dian)(dian)(dian)極(ji)上,通(tong)過設備陰(yin)(yin)陽極(ji)振(zhen)打系統的(de)(de)(de)(de)振(zhen)打,使(shi)沉積在(zai)陰(yin)(yin)陽電(dian)(dian)(dian)極(ji)上的(de)(de)(de)(de)粉(fen)塵(chen)(chen)振(zhen)落,進(jin)(jin)人集灰斗 通(tong)過排(pai)灰裝置放(fang)出,回收(shou)有物(wu)料,被)凈化的(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)體排(pai)入大氣(qi)(qi)(qi)(qi)。
工作原(yuan)理
靜電(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)器(qi)的(de)工作原理(li)是利用高壓電(dian)(dian)(dian)(dian)場使煙氣(qi)發生(sheng)電(dian)(dian)(dian)(dian)離,氣(qi)流(liu)(liu)中的(de)粉塵(chen)(chen)(chen)荷(he)電(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)場作用下(xia)與氣(qi)流(liu)(liu)分離。負極(ji)由不同斷面(mian)形(xing)(xing)狀(zhuang)的(de)金屬導(dao)線制(zhi)成(cheng),叫(jiao)放(fang)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極(ji)。正極(ji)由不同幾何形(xing)(xing)狀(zhuang)的(de)金屬板(ban)制(zhi)成(cheng),叫(jiao)集(ji)塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)。靜電(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)器(qi)的(de)性(xing)(xing)能受粉塵(chen)(chen)(chen)性(xing)(xing)質、設備構造和煙氣(qi)流(liu)(liu)速(su)等三個因素(su)的(de)影響。粉塵(chen)(chen)(chen)的(de)比(bi)電(dian)(dian)(dian)(dian)阻是評價導(dao)電(dian)(dian)(dian)(dian)性(xing)(xing)的(de)指標,它對(dui)除塵(chen)(chen)(chen)效率(lv)有直接的(de)影響。比(bi)電(dian)(dian)(dian)(dian)阻過低,塵(chen)(chen)(chen)粒難以保(bao)持在(zai)集(ji)塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)上,致使其重返(fan)氣(qi)流(liu)(liu)。比(bi)電(dian)(dian)(dian)(dian)阻過高,到達集(ji)塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)的(de)塵(chen)(chen)(chen)粒電(dian)(dian)(dian)(dian)荷(he)不易放(fang)出,在(zai)塵(chen)(chen)(chen)層之(zhi)間(jian)形(xing)(xing)成(cheng)電(dian)(dian)(dian)(dian)壓梯(ti)度會產(chan)生(sheng)局部擊(ji)穿和放(fang)電(dian)(dian)(dian)(dian)現象(xiang)。這些情況都會造成(cheng)除塵(chen)(chen)(chen)效率(lv)下(xia)降。
電除塵(chen)器的基本原理(li)是利用電力捕(bu)集煙氣(qi)中(zhong)的粉塵(chen),主要包(bao)括以下四個相(xiang)互有關的物理(li)過程: (1) 氣(qi)體的電離。(2) 粉塵(chen)的荷(he)電。(3) 荷(he)電粉塵(chen)向電極移動。(4) 荷(he)電粉塵(chen)的捕(bu)集。