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)(chen)(chen)器是以(yi)靜電(dian)(dian)(dian)凈化法(fa)來(lai)收捕廢(fei)氣(qi)(qi)中(zhong)的(de)粉塵(chen)(chen)(chen)(chen),它的(de)凈化工作上要是依靠電(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)(ji)(ji)和沉淀兩(liang)個系(xi)統來(lai)完成的(de),當含(han)(han)塵(chen)(chen)(chen)(chen)氣(qi)(qi)體(ti)(ti)進人(ren)(ren)氣(qi)(qi)刺叭時,含(han)(han)塵(chen)(chen)(chen)(chen)氣(qi)(qi)體(ti)(ti)受到氣(qi)(qi)流(liu)(liu)分布板(ban)(ban)以(yi)及折流(liu)(liu)板(ban)(ban)的(de)調整后(hou),使(shi)氣(qi)(qi)流(liu)(liu)能較(jiao)均(jun)勻地進人(ren)(ren)電(dian)(dian)(dian)場(chang)。在橫斷面擴大(da)的(de)作用(yong)下,氣(qi)(qi)流(liu)(liu)速度迅速降(jiang)低,其中(zhong)有(you)些較(jiao)重的(de)塵(chen)(chen)(chen)(chen)粒便失去速度而沉降(jiang)下來(lai)。進人(ren)(ren)電(dian)(dian)(dian)場(chang)的(de)含(han)(han)塵(chen)(chen)(chen)(chen)氣(qi)(qi)體(ti)(ti)由(you)于電(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)(ji)(ji)通人(ren)(ren)高壓直流(liu)(liu)電(dian)(dian)(dian),則在電(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)(ji)(ji)附近產(chan)生電(dian)(dian)(dian)暈(yun)(yun)現(xian)象,使(shi)氣(qi)(qi)體(ti)(ti)電(dian)(dian)(dian)離(li),電(dian)(dian)(dian)離(li)后(hou)的(de)氣(qi)(qi)體(ti)(ti)中(zhong)存在大(da)量的(de)電(dian)(dian)(dian)子(zi)(zi)(zi)和離(li)子(zi)(zi)(zi),這(zhe)些電(dian)(dian)(dian)子(zi)(zi)(zi)和離(li)子(zi)(zi)(zi)與進人(ren)(ren)電(dian)(dian)(dian)場(chang)的(de)粉塵(chen)(chen)(chen)(chen)結合起來(lai),使(shi)塵(chen)(chen)(chen)(chen)粒帶電(dian)(dian)(dian),帶電(dian)(dian)(dian)塵(chen)(chen)(chen)(chen)粒在電(dian)(dian)(dian)場(chang)力(li)的(de)作用(yong)下趨向本設(she)備(bei)陽極(ji)(ji)(ji)(ji)(正極(ji)(ji)(ji)(ji)、本設(she)備(bei)采(cai)用(yong)負高壓制)和陰極(ji)(ji)(ji)(ji)(負極(ji)(ji)(ji)(ji)) , 釋放出電(dian)(dian)(dian)子(zi)(zi)(zi)分別沉積(ji)在相應的(de)電(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上,通過設(she)備(bei)陰陽極(ji)(ji)(ji)(ji)振打系(xi)統的(de)振打,使(shi)沉積(ji)在陰陽電(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上的(de)粉塵(chen)(chen)(chen)(chen)振落,進人(ren)(ren)集灰斗 通過排灰裝置放出,回(hui)收有(you)物料(liao),被)凈化的(de)氣(qi)(qi)體(ti)(ti)排入大(da)氣(qi)(qi)。
工作(zuo)原理(li)
靜電(dian)(dian)(dian)(dian)除塵(chen)器的(de)工作(zuo)原(yuan)理是(shi)利用高(gao)壓電(dian)(dian)(dian)(dian)場(chang)使(shi)煙(yan)氣(qi)發生電(dian)(dian)(dian)(dian)離,氣(qi)流(liu)中(zhong)的(de)粉(fen)塵(chen)荷電(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)場(chang)作(zuo)用下與氣(qi)流(liu)分(fen)離。負極(ji)由不同斷(duan)面(mian)形(xing)狀(zhuang)(zhuang)的(de)金(jin)屬導線制成,叫(jiao)放電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極(ji)。正極(ji)由不同幾(ji)何形(xing)狀(zhuang)(zhuang)的(de)金(jin)屬板制成,叫(jiao)集(ji)塵(chen)電(dian)(dian)(dian)(dian)極(ji)。靜電(dian)(dian)(dian)(dian)除塵(chen)器的(de)性(xing)(xing)能受(shou)粉(fen)塵(chen)性(xing)(xing)質、設備(bei)構造和(he)煙(yan)氣(qi)流(liu)速等三(san)個因素的(de)影響。粉(fen)塵(chen)的(de)比(bi)(bi)電(dian)(dian)(dian)(dian)阻(zu)是(shi)評(ping)價(jia)導電(dian)(dian)(dian)(dian)性(xing)(xing)的(de)指標,它對(dui)除塵(chen)效率(lv)有直(zhi)接的(de)影響。比(bi)(bi)電(dian)(dian)(dian)(dian)阻(zu)過(guo)低(di),塵(chen)粒難以保持(chi)在集(ji)塵(chen)電(dian)(dian)(dian)(dian)極(ji)上,致使(shi)其重返氣(qi)流(liu)。比(bi)(bi)電(dian)(dian)(dian)(dian)阻(zu)過(guo)高(gao),到(dao)達集(ji)塵(chen)電(dian)(dian)(dian)(dian)極(ji)的(de)塵(chen)粒電(dian)(dian)(dian)(dian)荷不易(yi)放出,在塵(chen)層之間形(xing)成電(dian)(dian)(dian)(dian)壓梯度(du)會產生局部擊穿和(he)放電(dian)(dian)(dian)(dian)現象。這些情(qing)況都會造成除塵(chen)效率(lv)下降。
電(dian)除塵(chen)(chen)器(qi)的(de)基(ji)本(ben)原理是利用電(dian)力捕(bu)集(ji)煙氣(qi)(qi)中的(de)粉塵(chen)(chen),主要包括以下四個相互有關的(de)物理過程: (1) 氣(qi)(qi)體的(de)電(dian)離。(2) 粉塵(chen)(chen)的(de)荷(he)電(dian)。(3) 荷(he)電(dian)粉塵(chen)(chen)向(xiang)電(dian)極移動。(4) 荷(he)電(dian)粉塵(chen)(chen)的(de)捕(bu)集(ji)。