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)(dian)(dian)除(chu)塵(chen)(chen)器是以靜(jing)電(dian)(dian)(dian)(dian)(dian)凈化法來(lai)收(shou)捕廢氣(qi)(qi)(qi)(qi)(qi)中的(de)(de)(de)粉(fen)塵(chen)(chen),它的(de)(de)(de)凈化工作上要是依靠電(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)和(he)沉(chen)淀兩個(ge)系統來(lai)完(wan)成(cheng)的(de)(de)(de),當含塵(chen)(chen)氣(qi)(qi)(qi)(qi)(qi)體(ti)(ti)(ti)進(jin)人(ren)(ren)氣(qi)(qi)(qi)(qi)(qi)刺叭時,含塵(chen)(chen)氣(qi)(qi)(qi)(qi)(qi)體(ti)(ti)(ti)受到氣(qi)(qi)(qi)(qi)(qi)流(liu)分(fen)布(bu)板以及折流(liu)板的(de)(de)(de)調整后,使氣(qi)(qi)(qi)(qi)(qi)流(liu)能(neng)較均勻地進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)。在橫(heng)斷(duan)面擴大(da)(da)(da)的(de)(de)(de)作用下,氣(qi)(qi)(qi)(qi)(qi)流(liu)速度迅速降低,其中有(you)些較重的(de)(de)(de)塵(chen)(chen)粒便失去(qu)速度而沉(chen)降下來(lai)。進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)含塵(chen)(chen)氣(qi)(qi)(qi)(qi)(qi)體(ti)(ti)(ti)由于電(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)通(tong)人(ren)(ren)高壓(ya)直(zhi)流(liu)電(dian)(dian)(dian)(dian)(dian),則在電(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)附近產生(sheng)電(dian)(dian)(dian)(dian)(dian)暈現象,使氣(qi)(qi)(qi)(qi)(qi)體(ti)(ti)(ti)電(dian)(dian)(dian)(dian)(dian)離(li)(li),電(dian)(dian)(dian)(dian)(dian)離(li)(li)后的(de)(de)(de)氣(qi)(qi)(qi)(qi)(qi)體(ti)(ti)(ti)中存(cun)在大(da)(da)(da)量(liang)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)子(zi)和(he)離(li)(li)子(zi),這些電(dian)(dian)(dian)(dian)(dian)子(zi)和(he)離(li)(li)子(zi)與進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)粉(fen)塵(chen)(chen)結合起來(lai),使塵(chen)(chen)粒帶電(dian)(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)粒在電(dian)(dian)(dian)(dian)(dian)場(chang)力的(de)(de)(de)作用下趨向本設備陽極(ji)(ji)(正極(ji)(ji)、本設備采用負(fu)高壓(ya)制)和(he)陰極(ji)(ji)(負(fu)極(ji)(ji)) , 釋放出電(dian)(dian)(dian)(dian)(dian)子(zi)分(fen)別沉(chen)積(ji)在相應的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上,通(tong)過設備陰陽極(ji)(ji)振打系統的(de)(de)(de)振打,使沉(chen)積(ji)在陰陽電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上的(de)(de)(de)粉(fen)塵(chen)(chen)振落(luo),進(jin)人(ren)(ren)集灰斗(dou) 通(tong)過排灰裝置(zhi)放出,回收(shou)有(you)物料,被)凈化的(de)(de)(de)氣(qi)(qi)(qi)(qi)(qi)體(ti)(ti)(ti)排入大(da)(da)(da)氣(qi)(qi)(qi)(qi)(qi)。
工作原理(li)
靜(jing)電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器(qi)的(de)(de)(de)工作原理是(shi)利用高(gao)壓電(dian)(dian)(dian)場使煙氣(qi)(qi)發生電(dian)(dian)(dian)離,氣(qi)(qi)流(liu)中的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)荷電(dian)(dian)(dian)在電(dian)(dian)(dian)場作用下與氣(qi)(qi)流(liu)分離。負極由不(bu)(bu)同斷面形狀的(de)(de)(de)金(jin)屬(shu)導線制成(cheng)(cheng),叫放電(dian)(dian)(dian)電(dian)(dian)(dian)極。正(zheng)極由不(bu)(bu)同幾(ji)何(he)形狀的(de)(de)(de)金(jin)屬(shu)板制成(cheng)(cheng),叫集(ji)(ji)塵(chen)(chen)(chen)電(dian)(dian)(dian)極。靜(jing)電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器(qi)的(de)(de)(de)性能受粉(fen)塵(chen)(chen)(chen)性質(zhi)、設備構(gou)造和(he)煙氣(qi)(qi)流(liu)速等三(san)個因(yin)素的(de)(de)(de)影響(xiang)。粉(fen)塵(chen)(chen)(chen)的(de)(de)(de)比(bi)(bi)電(dian)(dian)(dian)阻(zu)是(shi)評價(jia)導電(dian)(dian)(dian)性的(de)(de)(de)指標(biao),它對除(chu)塵(chen)(chen)(chen)效(xiao)率(lv)有直接的(de)(de)(de)影響(xiang)。比(bi)(bi)電(dian)(dian)(dian)阻(zu)過低,塵(chen)(chen)(chen)粒難以保持在集(ji)(ji)塵(chen)(chen)(chen)電(dian)(dian)(dian)極上(shang),致使其(qi)重返氣(qi)(qi)流(liu)。比(bi)(bi)電(dian)(dian)(dian)阻(zu)過高(gao),到達集(ji)(ji)塵(chen)(chen)(chen)電(dian)(dian)(dian)極的(de)(de)(de)塵(chen)(chen)(chen)粒電(dian)(dian)(dian)荷不(bu)(bu)易放出,在塵(chen)(chen)(chen)層之間形成(cheng)(cheng)電(dian)(dian)(dian)壓梯度會(hui)產(chan)生局部擊穿和(he)放電(dian)(dian)(dian)現(xian)象。這些情況都(dou)會(hui)造成(cheng)(cheng)除(chu)塵(chen)(chen)(chen)效(xiao)率(lv)下降。
電(dian)除塵器的基本(ben)原理是(shi)利(li)用電(dian)力捕(bu)集煙氣中的粉塵,主要包括以(yi)下四個(ge)相互(hu)有關的物(wu)理過程: (1) 氣體(ti)的電(dian)離。(2) 粉塵的荷(he)(he)(he)電(dian)。(3) 荷(he)(he)(he)電(dian)粉塵向電(dian)極移動。(4) 荷(he)(he)(he)電(dian)粉塵的捕(bu)集。