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)(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)器是以靜電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)凈(jing)化(hua)(hua)法(fa)來(lai)收(shou)捕廢氣(qi)(qi)中的(de)(de)粉塵(chen)(chen)(chen),它的(de)(de)凈(jing)化(hua)(hua)工作上要是依(yi)靠電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)和沉(chen)淀兩個系(xi)統來(lai)完成的(de)(de),當含塵(chen)(chen)(chen)氣(qi)(qi)體(ti)(ti)進人(ren)氣(qi)(qi)刺叭時,含塵(chen)(chen)(chen)氣(qi)(qi)體(ti)(ti)受(shou)到氣(qi)(qi)流(liu)分布板以及折流(liu)板的(de)(de)調整后,使(shi)氣(qi)(qi)流(liu)能較(jiao)均勻(yun)地進人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場。在(zai)橫(heng)斷面擴大的(de)(de)作用(yong)下,氣(qi)(qi)流(liu)速(su)度迅(xun)速(su)降低,其中有些較(jiao)重的(de)(de)塵(chen)(chen)(chen)粒便失去速(su)度而(er)沉(chen)降下來(lai)。進人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場的(de)(de)含塵(chen)(chen)(chen)氣(qi)(qi)體(ti)(ti)由于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)通人(ren)高壓直流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)附近產生電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈現象,使(shi)氣(qi)(qi)體(ti)(ti)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)離(li)(li)(li),電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)離(li)(li)(li)后的(de)(de)氣(qi)(qi)體(ti)(ti)中存(cun)在(zai)大量的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)和離(li)(li)(li)子(zi)(zi),這些電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)和離(li)(li)(li)子(zi)(zi)與進人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場的(de)(de)粉塵(chen)(chen)(chen)結(jie)合起來(lai),使(shi)塵(chen)(chen)(chen)粒帶(dai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)(chen)粒在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場力(li)的(de)(de)作用(yong)下趨向本設(she)(she)備(bei)陽(yang)極(ji)(正極(ji)、本設(she)(she)備(bei)采用(yong)負(fu)高壓制(zhi))和陰(yin)極(ji)(負(fu)極(ji)) , 釋放出(chu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)分別(bie)沉(chen)積(ji)在(zai)相應的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)上,通過設(she)(she)備(bei)陰(yin)陽(yang)極(ji)振(zhen)打(da)系(xi)統的(de)(de)振(zhen)打(da),使(shi)沉(chen)積(ji)在(zai)陰(yin)陽(yang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)上的(de)(de)粉塵(chen)(chen)(chen)振(zhen)落(luo),進人(ren)集灰斗 通過排灰裝置放出(chu),回收(shou)有物料,被)凈(jing)化(hua)(hua)的(de)(de)氣(qi)(qi)體(ti)(ti)排入(ru)大氣(qi)(qi)。
工(gong)作原理
靜(jing)電(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)器的(de)(de)工作原(yuan)理是利用高壓電(dian)(dian)(dian)(dian)場使煙氣發生(sheng)電(dian)(dian)(dian)(dian)離,氣流中的(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)(chen)荷(he)電(dian)(dian)(dian)(dian)在(zai)(zai)電(dian)(dian)(dian)(dian)場作用下(xia)與氣流分離。負極(ji)由不同斷(duan)面形狀(zhuang)的(de)(de)金(jin)屬導線制成,叫放電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極(ji)。正極(ji)由不同幾何形狀(zhuang)的(de)(de)金(jin)屬板制成,叫集(ji)塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)。靜(jing)電(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)器的(de)(de)性(xing)能受粉(fen)塵(chen)(chen)(chen)(chen)(chen)性(xing)質、設備構(gou)造和(he)煙氣流速等三個因素的(de)(de)影響。粉(fen)塵(chen)(chen)(chen)(chen)(chen)的(de)(de)比電(dian)(dian)(dian)(dian)阻(zu)是評(ping)價(jia)導電(dian)(dian)(dian)(dian)性(xing)的(de)(de)指標,它對除(chu)塵(chen)(chen)(chen)(chen)(chen)效率(lv)有直接的(de)(de)影響。比電(dian)(dian)(dian)(dian)阻(zu)過低,塵(chen)(chen)(chen)(chen)(chen)粒難(nan)以保持在(zai)(zai)集(ji)塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)上,致(zhi)使其重(zhong)返氣流。比電(dian)(dian)(dian)(dian)阻(zu)過高,到達集(ji)塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)的(de)(de)塵(chen)(chen)(chen)(chen)(chen)粒電(dian)(dian)(dian)(dian)荷(he)不易放出,在(zai)(zai)塵(chen)(chen)(chen)(chen)(chen)層之間形成電(dian)(dian)(dian)(dian)壓梯度(du)會(hui)產生(sheng)局(ju)部擊(ji)穿(chuan)和(he)放電(dian)(dian)(dian)(dian)現象。這(zhe)些情況(kuang)都會(hui)造成除(chu)塵(chen)(chen)(chen)(chen)(chen)效率(lv)下(xia)降。
電(dian)(dian)(dian)除塵(chen)(chen)(chen)器的基本原理(li)是利用電(dian)(dian)(dian)力(li)捕集煙氣(qi)中的粉(fen)塵(chen)(chen)(chen),主要包括以下(xia)四個相互有(you)關的物理(li)過程: (1) 氣(qi)體的電(dian)(dian)(dian)離。(2) 粉(fen)塵(chen)(chen)(chen)的荷(he)電(dian)(dian)(dian)。(3) 荷(he)電(dian)(dian)(dian)粉(fen)塵(chen)(chen)(chen)向電(dian)(dian)(dian)極移動(dong)。(4) 荷(he)電(dian)(dian)(dian)粉(fen)塵(chen)(chen)(chen)的捕集。