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(jing)電(dian)(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)器是以(yi)靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)凈(jing)化(hua)法(fa)來收(shou)捕廢氣中的(de)(de)粉(fen)塵(chen)(chen)(chen),它的(de)(de)凈(jing)化(hua)工(gong)作上(shang)(shang)要是依(yi)靠電(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)和(he)沉(chen)淀兩個系統來完成的(de)(de),當含塵(chen)(chen)(chen)氣體進(jin)人(ren)(ren)氣刺叭時(shi),含塵(chen)(chen)(chen)氣體受到氣流(liu)分布板以(yi)及折流(liu)板的(de)(de)調整后(hou)(hou),使氣流(liu)能較均勻地進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)。在(zai)橫斷面擴大的(de)(de)作用(yong)(yong)下,氣流(liu)速度(du)迅速降低,其中有(you)些較重的(de)(de)塵(chen)(chen)(chen)粒便失去速度(du)而沉(chen)降下來。進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)含塵(chen)(chen)(chen)氣體由于電(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)通人(ren)(ren)高壓(ya)直流(liu)電(dian)(dian)(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)附近產生(sheng)電(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)現(xian)象,使氣體電(dian)(dian)(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)(dian)(dian)離后(hou)(hou)的(de)(de)氣體中存在(zai)大量的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)子和(he)離子,這些電(dian)(dian)(dian)(dian)(dian)(dian)子和(he)離子與進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)粉(fen)塵(chen)(chen)(chen)結合起來,使塵(chen)(chen)(chen)粒帶(dai)電(dian)(dian)(dian)(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)(chen)粒在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)力的(de)(de)作用(yong)(yong)下趨(qu)向本設備(bei)陽極(ji)(ji)(ji)(正極(ji)(ji)(ji)、本設備(bei)采用(yong)(yong)負高壓(ya)制)和(he)陰極(ji)(ji)(ji)(負極(ji)(ji)(ji)) , 釋放出(chu)(chu)電(dian)(dian)(dian)(dian)(dian)(dian)子分別沉(chen)積在(zai)相應(ying)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上(shang)(shang),通過(guo)設備(bei)陰陽極(ji)(ji)(ji)振(zhen)打(da)系統的(de)(de)振(zhen)打(da),使沉(chen)積在(zai)陰陽電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上(shang)(shang)的(de)(de)粉(fen)塵(chen)(chen)(chen)振(zhen)落,進(jin)人(ren)(ren)集灰(hui)斗 通過(guo)排(pai)灰(hui)裝置放出(chu)(chu),回收(shou)有(you)物料,被(bei))凈(jing)化(hua)的(de)(de)氣體排(pai)入大氣。
工(gong)作原(yuan)理
靜(jing)電(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器的(de)工作原理是利(li)用高壓電(dian)(dian)(dian)(dian)場使(shi)煙(yan)氣發(fa)生電(dian)(dian)(dian)(dian)離,氣流中的(de)粉(fen)塵(chen)(chen)(chen)(chen)荷(he)電(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)場作用下(xia)與(yu)氣流分(fen)離。負(fu)極(ji)由(you)不同斷面形狀(zhuang)的(de)金屬導線制(zhi)(zhi)成,叫(jiao)放(fang)(fang)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極(ji)。正極(ji)由(you)不同幾何形狀(zhuang)的(de)金屬板(ban)制(zhi)(zhi)成,叫(jiao)集塵(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)器的(de)性能受粉(fen)塵(chen)(chen)(chen)(chen)性質、設(she)備構(gou)造和煙(yan)氣流速等三個因(yin)素的(de)影響(xiang)。粉(fen)塵(chen)(chen)(chen)(chen)的(de)比(bi)(bi)電(dian)(dian)(dian)(dian)阻是評價(jia)導電(dian)(dian)(dian)(dian)性的(de)指標,它對(dui)除(chu)塵(chen)(chen)(chen)(chen)效率有(you)直接的(de)影響(xiang)。比(bi)(bi)電(dian)(dian)(dian)(dian)阻過低,塵(chen)(chen)(chen)(chen)粒(li)難以保持在集塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)上,致使(shi)其(qi)重返氣流。比(bi)(bi)電(dian)(dian)(dian)(dian)阻過高,到達(da)集塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)的(de)塵(chen)(chen)(chen)(chen)粒(li)電(dian)(dian)(dian)(dian)荷(he)不易放(fang)(fang)出,在塵(chen)(chen)(chen)(chen)層之間形成電(dian)(dian)(dian)(dian)壓梯度會產生局部擊(ji)穿和放(fang)(fang)電(dian)(dian)(dian)(dian)現(xian)象。這些情況(kuang)都會造成除(chu)塵(chen)(chen)(chen)(chen)效率下(xia)降。
電(dian)除塵(chen)(chen)器的(de)(de)(de)基本原理是利用電(dian)力(li)捕集(ji)(ji)煙氣中的(de)(de)(de)粉(fen)塵(chen)(chen),主要包(bao)括(kuo)以下四個相互有關的(de)(de)(de)物(wu)理過程: (1) 氣體的(de)(de)(de)電(dian)離。(2) 粉(fen)塵(chen)(chen)的(de)(de)(de)荷電(dian)。(3) 荷電(dian)粉(fen)塵(chen)(chen)向電(dian)極移動(dong)。(4) 荷電(dian)粉(fen)塵(chen)(chen)的(de)(de)(de)捕集(ji)(ji)。