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)(dian)(dian)(dian)除塵(chen)(chen)器是(shi)以(yi)靜電(dian)(dian)(dian)(dian)(dian)凈化法來(lai)收捕(bu)廢氣(qi)(qi)中的(de)粉(fen)塵(chen)(chen),它的(de)凈化工作上(shang)要是(shi)依靠電(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)和沉(chen)(chen)淀兩個(ge)系統來(lai)完成的(de),當含(han)塵(chen)(chen)氣(qi)(qi)體(ti)進人(ren)氣(qi)(qi)刺(ci)叭時,含(han)塵(chen)(chen)氣(qi)(qi)體(ti)受到氣(qi)(qi)流(liu)分布板(ban)以(yi)及折流(liu)板(ban)的(de)調整后,使(shi)氣(qi)(qi)流(liu)能較均勻(yun)地進人(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)。在(zai)橫斷面擴大的(de)作用(yong)(yong)下(xia),氣(qi)(qi)流(liu)速度迅速降低(di),其中有(you)些較重的(de)塵(chen)(chen)粒便失去速度而沉(chen)(chen)降下(xia)來(lai)。進人(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)的(de)含(han)塵(chen)(chen)氣(qi)(qi)體(ti)由于電(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)通(tong)人(ren)高壓(ya)直(zhi)流(liu)電(dian)(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)附(fu)近產生電(dian)(dian)(dian)(dian)(dian)暈(yun)現象,使(shi)氣(qi)(qi)體(ti)電(dian)(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)(dian)離(li)后的(de)氣(qi)(qi)體(ti)中存在(zai)大量的(de)電(dian)(dian)(dian)(dian)(dian)子(zi)和離(li)子(zi),這(zhe)些電(dian)(dian)(dian)(dian)(dian)子(zi)和離(li)子(zi)與進人(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)的(de)粉(fen)塵(chen)(chen)結合起來(lai),使(shi)塵(chen)(chen)粒帶電(dian)(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)粒在(zai)電(dian)(dian)(dian)(dian)(dian)場(chang)力的(de)作用(yong)(yong)下(xia)趨向本設備(bei)陽(yang)極(ji)(ji)(正極(ji)(ji)、本設備(bei)采用(yong)(yong)負(fu)高壓(ya)制)和陰極(ji)(ji)(負(fu)極(ji)(ji)) , 釋(shi)放出電(dian)(dian)(dian)(dian)(dian)子(zi)分別沉(chen)(chen)積(ji)在(zai)相應的(de)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上(shang),通(tong)過設備(bei)陰陽(yang)極(ji)(ji)振打系統的(de)振打,使(shi)沉(chen)(chen)積(ji)在(zai)陰陽(yang)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上(shang)的(de)粉(fen)塵(chen)(chen)振落(luo),進人(ren)集灰(hui)斗(dou) 通(tong)過排灰(hui)裝置(zhi)放出,回收有(you)物料,被)凈化的(de)氣(qi)(qi)體(ti)排入大氣(qi)(qi)。
工(gong)作原理
靜電(dian)(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)器的(de)(de)(de)(de)工作原理是(shi)利用高壓電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場使煙氣(qi)(qi)發生電(dian)(dian)(dian)(dian)(dian)(dian)(dian)離,氣(qi)(qi)流(liu)中(zhong)的(de)(de)(de)(de)粉塵(chen)(chen)(chen)(chen)(chen)荷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場作用下與氣(qi)(qi)流(liu)分離。負極(ji)由(you)不同(tong)(tong)斷面形(xing)狀的(de)(de)(de)(de)金屬(shu)(shu)導線制成(cheng)(cheng),叫放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)。正極(ji)由(you)不同(tong)(tong)幾何形(xing)狀的(de)(de)(de)(de)金屬(shu)(shu)板制成(cheng)(cheng),叫集(ji)(ji)塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)。靜電(dian)(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)器的(de)(de)(de)(de)性能受粉塵(chen)(chen)(chen)(chen)(chen)性質、設備(bei)構造和(he)煙氣(qi)(qi)流(liu)速等三個因素的(de)(de)(de)(de)影(ying)響。粉塵(chen)(chen)(chen)(chen)(chen)的(de)(de)(de)(de)比(bi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻是(shi)評(ping)價(jia)導電(dian)(dian)(dian)(dian)(dian)(dian)(dian)性的(de)(de)(de)(de)指標,它(ta)對(dui)除(chu)塵(chen)(chen)(chen)(chen)(chen)效率(lv)有直(zhi)接的(de)(de)(de)(de)影(ying)響。比(bi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻過低,塵(chen)(chen)(chen)(chen)(chen)粒難以保持在(zai)(zai)集(ji)(ji)塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)上,致使其(qi)重返氣(qi)(qi)流(liu)。比(bi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻過高,到達(da)集(ji)(ji)塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)的(de)(de)(de)(de)塵(chen)(chen)(chen)(chen)(chen)粒電(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷不易(yi)放出,在(zai)(zai)塵(chen)(chen)(chen)(chen)(chen)層之間形(xing)成(cheng)(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓梯度會產生局部擊穿和(he)放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)現象。這些(xie)情(qing)況都(dou)會造成(cheng)(cheng)除(chu)塵(chen)(chen)(chen)(chen)(chen)效率(lv)下降。
電(dian)(dian)(dian)除塵(chen)器的(de)(de)基本原(yuan)理(li)是利用(yong)電(dian)(dian)(dian)力捕(bu)集煙氣中的(de)(de)粉塵(chen),主要包括以下四個相互有關的(de)(de)物(wu)理(li)過(guo)程: (1) 氣體的(de)(de)電(dian)(dian)(dian)離。(2) 粉塵(chen)的(de)(de)荷電(dian)(dian)(dian)。(3) 荷電(dian)(dian)(dian)粉塵(chen)向電(dian)(dian)(dian)極(ji)移(yi)動(dong)。(4) 荷電(dian)(dian)(dian)粉塵(chen)的(de)(de)捕(bu)集。