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(chu)塵(chen)(chen)(chen)器是以(yi)靜電(dian)(dian)凈(jing)化(hua)法來收(shou)捕廢氣(qi)(qi)(qi)(qi)(qi)中的(de)粉(fen)(fen)(fen)塵(chen)(chen)(chen),它(ta)的(de)凈(jing)化(hua)工(gong)作(zuo)上(shang)要是依靠電(dian)(dian)暈(yun)極(ji)(ji)和沉(chen)(chen)淀兩個系統來完成的(de),當含(han)塵(chen)(chen)(chen)氣(qi)(qi)(qi)(qi)(qi)體(ti)(ti)(ti)進人(ren)氣(qi)(qi)(qi)(qi)(qi)刺(ci)叭時,含(han)塵(chen)(chen)(chen)氣(qi)(qi)(qi)(qi)(qi)體(ti)(ti)(ti)受到氣(qi)(qi)(qi)(qi)(qi)流分(fen)布板(ban)以(yi)及折流板(ban)的(de)調整后,使(shi)氣(qi)(qi)(qi)(qi)(qi)流能(neng)較(jiao)均勻地進人(ren)電(dian)(dian)場。在(zai)橫斷面擴(kuo)大(da)(da)的(de)作(zuo)用(yong)(yong)下,氣(qi)(qi)(qi)(qi)(qi)流速度(du)(du)迅速降(jiang)低,其中有些(xie)(xie)較(jiao)重(zhong)的(de)塵(chen)(chen)(chen)粒便失去速度(du)(du)而(er)沉(chen)(chen)降(jiang)下來。進人(ren)電(dian)(dian)場的(de)含(han)塵(chen)(chen)(chen)氣(qi)(qi)(qi)(qi)(qi)體(ti)(ti)(ti)由于電(dian)(dian)暈(yun)極(ji)(ji)通(tong)人(ren)高壓(ya)直流電(dian)(dian),則在(zai)電(dian)(dian)暈(yun)極(ji)(ji)附近產生(sheng)電(dian)(dian)暈(yun)現象(xiang),使(shi)氣(qi)(qi)(qi)(qi)(qi)體(ti)(ti)(ti)電(dian)(dian)離(li)(li)(li),電(dian)(dian)離(li)(li)(li)后的(de)氣(qi)(qi)(qi)(qi)(qi)體(ti)(ti)(ti)中存在(zai)大(da)(da)量的(de)電(dian)(dian)子(zi)和離(li)(li)(li)子(zi),這(zhe)些(xie)(xie)電(dian)(dian)子(zi)和離(li)(li)(li)子(zi)與(yu)進人(ren)電(dian)(dian)場的(de)粉(fen)(fen)(fen)塵(chen)(chen)(chen)結合起來,使(shi)塵(chen)(chen)(chen)粒帶電(dian)(dian),帶電(dian)(dian)塵(chen)(chen)(chen)粒在(zai)電(dian)(dian)場力的(de)作(zuo)用(yong)(yong)下趨向(xiang)本設(she)(she)備陽(yang)(yang)極(ji)(ji)(正極(ji)(ji)、本設(she)(she)備采用(yong)(yong)負高壓(ya)制)和陰極(ji)(ji)(負極(ji)(ji)) , 釋(shi)放出電(dian)(dian)子(zi)分(fen)別沉(chen)(chen)積在(zai)相應的(de)電(dian)(dian)極(ji)(ji)上(shang),通(tong)過設(she)(she)備陰陽(yang)(yang)極(ji)(ji)振打系統的(de)振打,使(shi)沉(chen)(chen)積在(zai)陰陽(yang)(yang)電(dian)(dian)極(ji)(ji)上(shang)的(de)粉(fen)(fen)(fen)塵(chen)(chen)(chen)振落,進人(ren)集(ji)灰斗 通(tong)過排灰裝置放出,回收(shou)有物料,被)凈(jing)化(hua)的(de)氣(qi)(qi)(qi)(qi)(qi)體(ti)(ti)(ti)排入大(da)(da)氣(qi)(qi)(qi)(qi)(qi)。
工(gong)作原理
靜電(dian)(dian)(dian)(dian)(dian)(dian)除塵器的(de)(de)(de)工作原理是利用高壓電(dian)(dian)(dian)(dian)(dian)(dian)場使煙氣(qi)發(fa)生電(dian)(dian)(dian)(dian)(dian)(dian)離,氣(qi)流(liu)(liu)中的(de)(de)(de)粉塵荷(he)電(dian)(dian)(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)場作用下與(yu)氣(qi)流(liu)(liu)分離。負極由(you)不(bu)同斷面形狀的(de)(de)(de)金屬(shu)導線制成,叫放電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)極。正(zheng)極由(you)不(bu)同幾(ji)何形狀的(de)(de)(de)金屬(shu)板(ban)制成,叫集塵電(dian)(dian)(dian)(dian)(dian)(dian)極。靜電(dian)(dian)(dian)(dian)(dian)(dian)除塵器的(de)(de)(de)性能受粉塵性質、設備構(gou)造和(he)煙氣(qi)流(liu)(liu)速(su)等三(san)個因素的(de)(de)(de)影響(xiang)。粉塵的(de)(de)(de)比(bi)(bi)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)是評價(jia)導電(dian)(dian)(dian)(dian)(dian)(dian)性的(de)(de)(de)指標,它對除塵效(xiao)率有直(zhi)接的(de)(de)(de)影響(xiang)。比(bi)(bi)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)過(guo)低,塵粒難以保(bao)持在(zai)集塵電(dian)(dian)(dian)(dian)(dian)(dian)極上,致使其重返氣(qi)流(liu)(liu)。比(bi)(bi)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)過(guo)高,到達集塵電(dian)(dian)(dian)(dian)(dian)(dian)極的(de)(de)(de)塵粒電(dian)(dian)(dian)(dian)(dian)(dian)荷(he)不(bu)易放出,在(zai)塵層之間形成電(dian)(dian)(dian)(dian)(dian)(dian)壓梯度會產(chan)生局部擊穿和(he)放電(dian)(dian)(dian)(dian)(dian)(dian)現象。這些情況都會造成除塵效(xiao)率下降。
電(dian)除塵器的基本原理(li)是利用電(dian)力(li)捕集煙(yan)氣中的粉(fen)塵,主要包(bao)括(kuo)以(yi)下四個相互有關的物理(li)過程: (1) 氣體(ti)的電(dian)離。(2) 粉(fen)塵的荷(he)電(dian)。(3) 荷(he)電(dian)粉(fen)塵向(xiang)電(dian)極移動(dong)。(4) 荷(he)電(dian)粉(fen)塵的捕集。