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。
臥式靜電(dian)(dian)除塵(chen)(chen)(chen)(chen)器(qi)是(shi)以靜電(dian)(dian)凈化法(fa)來收(shou)(shou)捕廢氣(qi)(qi)(qi)中的(de)(de)(de)粉塵(chen)(chen)(chen)(chen),它的(de)(de)(de)凈化工(gong)作上要是(shi)依靠電(dian)(dian)暈極(ji)(ji)和沉淀(dian)兩個系(xi)統來完(wan)成的(de)(de)(de),當含(han)塵(chen)(chen)(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)(ti)進(jin)人氣(qi)(qi)(qi)刺叭時,含(han)塵(chen)(chen)(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)(ti)受到氣(qi)(qi)(qi)流(liu)分布板(ban)以及(ji)折流(liu)板(ban)的(de)(de)(de)調整后,使(shi)(shi)氣(qi)(qi)(qi)流(liu)能較均(jun)勻地進(jin)人電(dian)(dian)場。在橫斷面擴大(da)的(de)(de)(de)作用(yong)下,氣(qi)(qi)(qi)流(liu)速度迅(xun)速降低,其中有(you)些較重的(de)(de)(de)塵(chen)(chen)(chen)(chen)粒(li)(li)便失(shi)去(qu)速度而沉降下來。進(jin)人電(dian)(dian)場的(de)(de)(de)含(han)塵(chen)(chen)(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)(ti)由于電(dian)(dian)暈極(ji)(ji)通人高壓直流(liu)電(dian)(dian),則在電(dian)(dian)暈極(ji)(ji)附近(jin)產生(sheng)電(dian)(dian)暈現象,使(shi)(shi)氣(qi)(qi)(qi)體(ti)(ti)(ti)電(dian)(dian)離(li),電(dian)(dian)離(li)后的(de)(de)(de)氣(qi)(qi)(qi)體(ti)(ti)(ti)中存在大(da)量的(de)(de)(de)電(dian)(dian)子(zi)(zi)(zi)和離(li)子(zi)(zi)(zi),這些電(dian)(dian)子(zi)(zi)(zi)和離(li)子(zi)(zi)(zi)與進(jin)人電(dian)(dian)場的(de)(de)(de)粉塵(chen)(chen)(chen)(chen)結合(he)起來,使(shi)(shi)塵(chen)(chen)(chen)(chen)粒(li)(li)帶電(dian)(dian),帶電(dian)(dian)塵(chen)(chen)(chen)(chen)粒(li)(li)在電(dian)(dian)場力的(de)(de)(de)作用(yong)下趨向本設(she)(she)備陽(yang)極(ji)(ji)(正極(ji)(ji)、本設(she)(she)備采用(yong)負(fu)高壓制)和陰(yin)(yin)極(ji)(ji)(負(fu)極(ji)(ji)) , 釋放出(chu)電(dian)(dian)子(zi)(zi)(zi)分別沉積在相應的(de)(de)(de)電(dian)(dian)極(ji)(ji)上,通過設(she)(she)備陰(yin)(yin)陽(yang)極(ji)(ji)振(zhen)打(da)系(xi)統的(de)(de)(de)振(zhen)打(da),使(shi)(shi)沉積在陰(yin)(yin)陽(yang)電(dian)(dian)極(ji)(ji)上的(de)(de)(de)粉塵(chen)(chen)(chen)(chen)振(zhen)落(luo),進(jin)人集灰斗(dou) 通過排(pai)灰裝置放出(chu),回收(shou)(shou)有(you)物料,被)凈化的(de)(de)(de)氣(qi)(qi)(qi)體(ti)(ti)(ti)排(pai)入大(da)氣(qi)(qi)(qi)。
工作原理(li)
靜電(dian)(dian)除塵(chen)(chen)器的(de)(de)(de)工(gong)作原理是(shi)利用高(gao)壓(ya)電(dian)(dian)場使煙(yan)氣(qi)發(fa)生電(dian)(dian)離,氣(qi)流(liu)(liu)中的(de)(de)(de)粉塵(chen)(chen)荷電(dian)(dian)在(zai)電(dian)(dian)場作用下與氣(qi)流(liu)(liu)分離。負極由(you)不同斷面形狀(zhuang)的(de)(de)(de)金屬(shu)(shu)導線(xian)制(zhi)成(cheng),叫放電(dian)(dian)電(dian)(dian)極。正極由(you)不同幾何形狀(zhuang)的(de)(de)(de)金屬(shu)(shu)板制(zhi)成(cheng),叫集塵(chen)(chen)電(dian)(dian)極。靜電(dian)(dian)除塵(chen)(chen)器的(de)(de)(de)性能受粉塵(chen)(chen)性質、設備構造(zao)和煙(yan)氣(qi)流(liu)(liu)速等三(san)個因素的(de)(de)(de)影響(xiang)。粉塵(chen)(chen)的(de)(de)(de)比電(dian)(dian)阻(zu)(zu)是(shi)評價(jia)導電(dian)(dian)性的(de)(de)(de)指標(biao),它對除塵(chen)(chen)效(xiao)(xiao)率(lv)有直接的(de)(de)(de)影響(xiang)。比電(dian)(dian)阻(zu)(zu)過低,塵(chen)(chen)粒難(nan)以保持在(zai)集塵(chen)(chen)電(dian)(dian)極上,致使其(qi)重(zhong)返氣(qi)流(liu)(liu)。比電(dian)(dian)阻(zu)(zu)過高(gao),到達集塵(chen)(chen)電(dian)(dian)極的(de)(de)(de)塵(chen)(chen)粒電(dian)(dian)荷不易放出,在(zai)塵(chen)(chen)層之間形成(cheng)電(dian)(dian)壓(ya)梯度會產生局部擊穿和放電(dian)(dian)現象。這些情況都(dou)會造(zao)成(cheng)除塵(chen)(chen)效(xiao)(xiao)率(lv)下降。
電(dian)除塵器的(de)(de)基本原理(li)是利用電(dian)力捕集(ji)煙氣(qi)中的(de)(de)粉塵,主要包括(kuo)以下四(si)個(ge)相互有(you)關的(de)(de)物理(li)過程(cheng): (1) 氣(qi)體(ti)的(de)(de)電(dian)離。(2) 粉塵的(de)(de)荷電(dian)。(3) 荷電(dian)粉塵向電(dian)極(ji)移動。(4) 荷電(dian)粉塵的(de)(de)捕集(ji)。