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)(dian)(dian)除塵(chen)(chen)器是以(yi)(yi)靜電(dian)(dian)(dian)(dian)(dian)凈化(hua)法來收捕(bu)廢(fei)氣(qi)中的(de)(de)(de)粉(fen)塵(chen)(chen),它(ta)的(de)(de)(de)凈化(hua)工作(zuo)上(shang)要(yao)是依靠電(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)(ji)和(he)(he)沉淀兩個系(xi)(xi)統來完成的(de)(de)(de),當(dang)含塵(chen)(chen)氣(qi)體(ti)進(jin)人氣(qi)刺(ci)叭時(shi),含塵(chen)(chen)氣(qi)體(ti)受到(dao)氣(qi)流分(fen)布板以(yi)(yi)及折(zhe)流板的(de)(de)(de)調整后(hou),使(shi)氣(qi)流能較均勻地進(jin)人電(dian)(dian)(dian)(dian)(dian)場(chang)。在(zai)橫(heng)斷面擴大的(de)(de)(de)作(zuo)用下(xia),氣(qi)流速(su)度迅速(su)降低,其中有些較重的(de)(de)(de)塵(chen)(chen)粒便失去(qu)速(su)度而沉降下(xia)來。進(jin)人電(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)含塵(chen)(chen)氣(qi)體(ti)由(you)于電(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)(ji)通人高壓(ya)直流電(dian)(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)(ji)附(fu)近產生(sheng)電(dian)(dian)(dian)(dian)(dian)暈現象(xiang),使(shi)氣(qi)體(ti)電(dian)(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)(dian)離后(hou)的(de)(de)(de)氣(qi)體(ti)中存在(zai)大量的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)子和(he)(he)離子,這些電(dian)(dian)(dian)(dian)(dian)子和(he)(he)離子與進(jin)人電(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)粉(fen)塵(chen)(chen)結合起(qi)來,使(shi)塵(chen)(chen)粒帶(dai)電(dian)(dian)(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)粒在(zai)電(dian)(dian)(dian)(dian)(dian)場(chang)力的(de)(de)(de)作(zuo)用下(xia)趨向本設備(bei)陽極(ji)(ji)(ji)(正極(ji)(ji)(ji)、本設備(bei)采用負高壓(ya)制)和(he)(he)陰極(ji)(ji)(ji)(負極(ji)(ji)(ji)) , 釋放(fang)(fang)出(chu)(chu)電(dian)(dian)(dian)(dian)(dian)子分(fen)別沉積(ji)(ji)在(zai)相應的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上(shang),通過(guo)設備(bei)陰陽極(ji)(ji)(ji)振(zhen)打(da)(da)系(xi)(xi)統的(de)(de)(de)振(zhen)打(da)(da),使(shi)沉積(ji)(ji)在(zai)陰陽電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上(shang)的(de)(de)(de)粉(fen)塵(chen)(chen)振(zhen)落,進(jin)人集(ji)灰斗 通過(guo)排灰裝置(zhi)放(fang)(fang)出(chu)(chu),回(hui)收有物料,被(bei))凈化(hua)的(de)(de)(de)氣(qi)體(ti)排入大氣(qi)。
工(gong)作原(yuan)理
靜(jing)電(dian)(dian)(dian)(dian)除(chu)(chu)(chu)(chu)塵(chen)器的(de)(de)(de)工作原理(li)是利用(yong)高(gao)(gao)壓電(dian)(dian)(dian)(dian)場(chang)(chang)使煙氣(qi)(qi)發生(sheng)電(dian)(dian)(dian)(dian)離,氣(qi)(qi)流(liu)中的(de)(de)(de)粉塵(chen)荷電(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)場(chang)(chang)作用(yong)下與(yu)氣(qi)(qi)流(liu)分離。負極(ji)(ji)(ji)由不同斷面形(xing)(xing)狀的(de)(de)(de)金屬(shu)導線制成,叫(jiao)放電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)。正極(ji)(ji)(ji)由不同幾(ji)何形(xing)(xing)狀的(de)(de)(de)金屬(shu)板制成,叫(jiao)集塵(chen)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)。靜(jing)電(dian)(dian)(dian)(dian)除(chu)(chu)(chu)(chu)塵(chen)器的(de)(de)(de)性(xing)能(neng)受(shou)粉塵(chen)性(xing)質、設(she)備構造和煙氣(qi)(qi)流(liu)速(su)等三個因素(su)的(de)(de)(de)影響。粉塵(chen)的(de)(de)(de)比電(dian)(dian)(dian)(dian)阻是評價導電(dian)(dian)(dian)(dian)性(xing)的(de)(de)(de)指標,它(ta)對除(chu)(chu)(chu)(chu)塵(chen)效(xiao)率有直(zhi)接的(de)(de)(de)影響。比電(dian)(dian)(dian)(dian)阻過(guo)(guo)低(di),塵(chen)粒難(nan)以保(bao)持(chi)在(zai)集塵(chen)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上,致使其重返氣(qi)(qi)流(liu)。比電(dian)(dian)(dian)(dian)阻過(guo)(guo)高(gao)(gao),到達集塵(chen)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)的(de)(de)(de)塵(chen)粒電(dian)(dian)(dian)(dian)荷不易放出,在(zai)塵(chen)層(ceng)之間形(xing)(xing)成電(dian)(dian)(dian)(dian)壓梯(ti)度會產(chan)生(sheng)局部擊穿和放電(dian)(dian)(dian)(dian)現象(xiang)。這些情況都會造成除(chu)(chu)(chu)(chu)塵(chen)效(xiao)率下降(jiang)。
電(dian)除塵(chen)器的(de)基本原理是利用電(dian)力捕集(ji)煙氣中的(de)粉塵(chen),主要包括以下四個相(xiang)互有關的(de)物理過程(cheng): (1) 氣體的(de)電(dian)離。(2) 粉塵(chen)的(de)荷(he)電(dian)。(3) 荷(he)電(dian)粉塵(chen)向電(dian)極移動。(4) 荷(he)電(dian)粉塵(chen)的(de)捕集(ji)。