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)(dian)除塵(chen)(chen)器是以(yi)(yi)靜電(dian)(dian)(dian)凈(jing)化法來收捕廢氣(qi)(qi)(qi)中的(de)(de)(de)(de)粉塵(chen)(chen),它(ta)的(de)(de)(de)(de)凈(jing)化工作上要是依靠電(dian)(dian)(dian)暈(yun)(yun)極(ji)和(he)沉(chen)淀兩個系統來完成(cheng)的(de)(de)(de)(de),當含塵(chen)(chen)氣(qi)(qi)(qi)體(ti)進(jin)人(ren)(ren)氣(qi)(qi)(qi)刺叭時,含塵(chen)(chen)氣(qi)(qi)(qi)體(ti)受到氣(qi)(qi)(qi)流(liu)分(fen)布板(ban)以(yi)(yi)及折流(liu)板(ban)的(de)(de)(de)(de)調整(zheng)后,使(shi)氣(qi)(qi)(qi)流(liu)能較(jiao)均(jun)勻地進(jin)人(ren)(ren)電(dian)(dian)(dian)場(chang)。在橫斷面(mian)擴大(da)的(de)(de)(de)(de)作用下(xia),氣(qi)(qi)(qi)流(liu)速度(du)迅速降低,其中有(you)些(xie)較(jiao)重的(de)(de)(de)(de)塵(chen)(chen)粒便失去速度(du)而沉(chen)降下(xia)來。進(jin)人(ren)(ren)電(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)含塵(chen)(chen)氣(qi)(qi)(qi)體(ti)由(you)于電(dian)(dian)(dian)暈(yun)(yun)極(ji)通人(ren)(ren)高壓直流(liu)電(dian)(dian)(dian),則(ze)在電(dian)(dian)(dian)暈(yun)(yun)極(ji)附近產(chan)生電(dian)(dian)(dian)暈(yun)(yun)現象,使(shi)氣(qi)(qi)(qi)體(ti)電(dian)(dian)(dian)離(li),電(dian)(dian)(dian)離(li)后的(de)(de)(de)(de)氣(qi)(qi)(qi)體(ti)中存在大(da)量(liang)的(de)(de)(de)(de)電(dian)(dian)(dian)子和(he)離(li)子,這些(xie)電(dian)(dian)(dian)子和(he)離(li)子與進(jin)人(ren)(ren)電(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)粉塵(chen)(chen)結合起來,使(shi)塵(chen)(chen)粒帶電(dian)(dian)(dian),帶電(dian)(dian)(dian)塵(chen)(chen)粒在電(dian)(dian)(dian)場(chang)力的(de)(de)(de)(de)作用下(xia)趨(qu)向本設備(bei)陽極(ji)(正極(ji)、本設備(bei)采(cai)用負高壓制)和(he)陰極(ji)(負極(ji)) , 釋放出(chu)電(dian)(dian)(dian)子分(fen)別(bie)沉(chen)積在相應的(de)(de)(de)(de)電(dian)(dian)(dian)極(ji)上,通過設備(bei)陰陽極(ji)振打系統的(de)(de)(de)(de)振打,使(shi)沉(chen)積在陰陽電(dian)(dian)(dian)極(ji)上的(de)(de)(de)(de)粉塵(chen)(chen)振落,進(jin)人(ren)(ren)集灰斗 通過排(pai)(pai)灰裝置放出(chu),回收有(you)物料(liao),被(bei))凈(jing)化的(de)(de)(de)(de)氣(qi)(qi)(qi)體(ti)排(pai)(pai)入大(da)氣(qi)(qi)(qi)。
工作原理
靜電(dian)(dian)(dian)除(chu)塵(chen)器的工作(zuo)原理是利用高(gao)壓(ya)電(dian)(dian)(dian)場(chang)(chang)使煙(yan)氣發生(sheng)電(dian)(dian)(dian)離,氣流中的粉塵(chen)荷(he)電(dian)(dian)(dian)在電(dian)(dian)(dian)場(chang)(chang)作(zuo)用下(xia)與(yu)氣流分離。負極(ji)由(you)不同斷面形(xing)(xing)狀(zhuang)的金(jin)屬導線制成(cheng)(cheng),叫(jiao)放電(dian)(dian)(dian)電(dian)(dian)(dian)極(ji)。正極(ji)由(you)不同幾何形(xing)(xing)狀(zhuang)的金(jin)屬板制成(cheng)(cheng),叫(jiao)集塵(chen)電(dian)(dian)(dian)極(ji)。靜電(dian)(dian)(dian)除(chu)塵(chen)器的性(xing)能受粉塵(chen)性(xing)質、設(she)備構造和煙(yan)氣流速等三個因素(su)的影響(xiang)。粉塵(chen)的比(bi)電(dian)(dian)(dian)阻是評價導電(dian)(dian)(dian)性(xing)的指標,它對除(chu)塵(chen)效率有直(zhi)接的影響(xiang)。比(bi)電(dian)(dian)(dian)阻過(guo)低,塵(chen)粒(li)難以(yi)保持在集塵(chen)電(dian)(dian)(dian)極(ji)上(shang),致(zhi)使其重返氣流。比(bi)電(dian)(dian)(dian)阻過(guo)高(gao),到達(da)集塵(chen)電(dian)(dian)(dian)極(ji)的塵(chen)粒(li)電(dian)(dian)(dian)荷(he)不易放出,在塵(chen)層之間形(xing)(xing)成(cheng)(cheng)電(dian)(dian)(dian)壓(ya)梯度會產生(sheng)局(ju)部擊(ji)穿和放電(dian)(dian)(dian)現象。這些情況都會造成(cheng)(cheng)除(chu)塵(chen)效率下(xia)降。
電除(chu)塵(chen)器(qi)的(de)基本原理是利用電力(li)捕集(ji)煙氣中的(de)粉塵(chen),主要包(bao)括(kuo)以下四個相互(hu)有關的(de)物理過程: (1) 氣體(ti)的(de)電離。(2) 粉塵(chen)的(de)荷(he)電。(3) 荷(he)電粉塵(chen)向電極移動(dong)。(4) 荷(he)電粉塵(chen)的(de)捕集(ji)。