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。
臥式靜電(dian)(dian)(dian)(dian)(dian)除塵(chen)器(qi)是以靜電(dian)(dian)(dian)(dian)(dian)凈(jing)化(hua)法來收捕廢氣(qi)(qi)(qi)中(zhong)的(de)(de)(de)粉(fen)塵(chen),它的(de)(de)(de)凈(jing)化(hua)工作(zuo)上要(yao)是依(yi)靠電(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)和(he)沉淀兩(liang)個系(xi)統來完成的(de)(de)(de),當(dang)含塵(chen)氣(qi)(qi)(qi)體(ti)(ti)進(jin)人氣(qi)(qi)(qi)刺叭時,含塵(chen)氣(qi)(qi)(qi)體(ti)(ti)受到氣(qi)(qi)(qi)流(liu)分布板(ban)以及折(zhe)流(liu)板(ban)的(de)(de)(de)調整后,使氣(qi)(qi)(qi)流(liu)能較均勻地進(jin)人電(dian)(dian)(dian)(dian)(dian)場。在(zai)橫(heng)斷面(mian)擴大的(de)(de)(de)作(zuo)用(yong)下(xia)(xia),氣(qi)(qi)(qi)流(liu)速(su)度迅速(su)降(jiang)低,其中(zhong)有些較重的(de)(de)(de)塵(chen)粒便失去速(su)度而沉降(jiang)下(xia)(xia)來。進(jin)人電(dian)(dian)(dian)(dian)(dian)場的(de)(de)(de)含塵(chen)氣(qi)(qi)(qi)體(ti)(ti)由于電(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)通(tong)人高(gao)壓直流(liu)電(dian)(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)附近產生電(dian)(dian)(dian)(dian)(dian)暈現(xian)象,使氣(qi)(qi)(qi)體(ti)(ti)電(dian)(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)(dian)離后的(de)(de)(de)氣(qi)(qi)(qi)體(ti)(ti)中(zhong)存在(zai)大量的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)子(zi)和(he)離子(zi),這些電(dian)(dian)(dian)(dian)(dian)子(zi)和(he)離子(zi)與進(jin)人電(dian)(dian)(dian)(dian)(dian)場的(de)(de)(de)粉(fen)塵(chen)結合(he)起(qi)來,使塵(chen)粒帶電(dian)(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)(dian)塵(chen)粒在(zai)電(dian)(dian)(dian)(dian)(dian)場力的(de)(de)(de)作(zuo)用(yong)下(xia)(xia)趨(qu)向本設(she)備陽(yang)(yang)極(ji)(ji)(正極(ji)(ji)、本設(she)備采用(yong)負高(gao)壓制)和(he)陰(yin)極(ji)(ji)(負極(ji)(ji)) , 釋放出電(dian)(dian)(dian)(dian)(dian)子(zi)分別沉積(ji)在(zai)相應的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上,通(tong)過設(she)備陰(yin)陽(yang)(yang)極(ji)(ji)振打系(xi)統的(de)(de)(de)振打,使沉積(ji)在(zai)陰(yin)陽(yang)(yang)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上的(de)(de)(de)粉(fen)塵(chen)振落,進(jin)人集灰斗 通(tong)過排灰裝置放出,回收有物料,被(bei))凈(jing)化(hua)的(de)(de)(de)氣(qi)(qi)(qi)體(ti)(ti)排入大氣(qi)(qi)(qi)。
工作原理
靜(jing)電(dian)(dian)(dian)(dian)除(chu)塵(chen)器的(de)工作(zuo)原(yuan)理是利(li)用(yong)高壓(ya)電(dian)(dian)(dian)(dian)場使煙(yan)氣(qi)發生電(dian)(dian)(dian)(dian)離,氣(qi)流中的(de)粉(fen)塵(chen)荷(he)電(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)場作(zuo)用(yong)下(xia)(xia)與氣(qi)流分離。負極由不(bu)同斷(duan)面形狀(zhuang)的(de)金(jin)屬導線制(zhi)成(cheng)(cheng),叫(jiao)放(fang)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極。正極由不(bu)同幾何形狀(zhuang)的(de)金(jin)屬板制(zhi)成(cheng)(cheng),叫(jiao)集(ji)塵(chen)電(dian)(dian)(dian)(dian)極。靜(jing)電(dian)(dian)(dian)(dian)除(chu)塵(chen)器的(de)性能(neng)受粉(fen)塵(chen)性質、設備構造和煙(yan)氣(qi)流速等三個(ge)因素的(de)影(ying)響。粉(fen)塵(chen)的(de)比(bi)電(dian)(dian)(dian)(dian)阻是評價導電(dian)(dian)(dian)(dian)性的(de)指標,它(ta)對除(chu)塵(chen)效(xiao)率(lv)有(you)直接的(de)影(ying)響。比(bi)電(dian)(dian)(dian)(dian)阻過(guo)低(di),塵(chen)粒(li)難(nan)以保持(chi)在(zai)集(ji)塵(chen)電(dian)(dian)(dian)(dian)極上,致使其重返氣(qi)流。比(bi)電(dian)(dian)(dian)(dian)阻過(guo)高,到達(da)集(ji)塵(chen)電(dian)(dian)(dian)(dian)極的(de)塵(chen)粒(li)電(dian)(dian)(dian)(dian)荷(he)不(bu)易放(fang)出(chu),在(zai)塵(chen)層之間形成(cheng)(cheng)電(dian)(dian)(dian)(dian)壓(ya)梯度會產生局部擊穿(chuan)和放(fang)電(dian)(dian)(dian)(dian)現象。這(zhe)些情況都會造成(cheng)(cheng)除(chu)塵(chen)效(xiao)率(lv)下(xia)(xia)降。
電(dian)(dian)(dian)除(chu)塵器的基本原(yuan)理(li)(li)是利用(yong)電(dian)(dian)(dian)力捕集(ji)煙氣中的粉塵,主要包括(kuo)以下四個相互有關的物(wu)理(li)(li)過程: (1) 氣體的電(dian)(dian)(dian)離。(2) 粉塵的荷(he)電(dian)(dian)(dian)。(3) 荷(he)電(dian)(dian)(dian)粉塵向(xiang)電(dian)(dian)(dian)極移(yi)動。(4) 荷(he)電(dian)(dian)(dian)粉塵的捕集(ji)。