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。
臥式靜電除塵(chen)(chen)(chen)(chen)器是以靜電凈化(hua)法(fa)來(lai)收(shou)捕(bu)廢(fei)氣(qi)(qi)(qi)(qi)中的(de)(de)(de)(de)粉塵(chen)(chen)(chen)(chen),它的(de)(de)(de)(de)凈化(hua)工作(zuo)上(shang)要是依靠電暈(yun)(yun)極(ji)(ji)和(he)沉(chen)(chen)淀兩個(ge)系(xi)統來(lai)完成的(de)(de)(de)(de),當含(han)塵(chen)(chen)(chen)(chen)氣(qi)(qi)(qi)(qi)體(ti)進(jin)(jin)人(ren)(ren)氣(qi)(qi)(qi)(qi)刺叭(ba)時,含(han)塵(chen)(chen)(chen)(chen)氣(qi)(qi)(qi)(qi)體(ti)受到氣(qi)(qi)(qi)(qi)流(liu)分布板以及折流(liu)板的(de)(de)(de)(de)調(diao)整(zheng)后(hou),使(shi)(shi)氣(qi)(qi)(qi)(qi)流(liu)能較均勻地進(jin)(jin)人(ren)(ren)電場。在橫斷(duan)面擴大的(de)(de)(de)(de)作(zuo)用(yong)下,氣(qi)(qi)(qi)(qi)流(liu)速度(du)迅(xun)速降(jiang)低(di),其中有些較重的(de)(de)(de)(de)塵(chen)(chen)(chen)(chen)粒便失去速度(du)而沉(chen)(chen)降(jiang)下來(lai)。進(jin)(jin)人(ren)(ren)電場的(de)(de)(de)(de)含(han)塵(chen)(chen)(chen)(chen)氣(qi)(qi)(qi)(qi)體(ti)由(you)于(yu)電暈(yun)(yun)極(ji)(ji)通(tong)人(ren)(ren)高(gao)(gao)壓直(zhi)流(liu)電,則在電暈(yun)(yun)極(ji)(ji)附近產生(sheng)電暈(yun)(yun)現象,使(shi)(shi)氣(qi)(qi)(qi)(qi)體(ti)電離(li),電離(li)后(hou)的(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)中存在大量(liang)的(de)(de)(de)(de)電子(zi)和(he)離(li)子(zi),這些電子(zi)和(he)離(li)子(zi)與進(jin)(jin)人(ren)(ren)電場的(de)(de)(de)(de)粉塵(chen)(chen)(chen)(chen)結合起來(lai),使(shi)(shi)塵(chen)(chen)(chen)(chen)粒帶(dai)電,帶(dai)電塵(chen)(chen)(chen)(chen)粒在電場力的(de)(de)(de)(de)作(zuo)用(yong)下趨向本(ben)設(she)備(bei)陽極(ji)(ji)(正極(ji)(ji)、本(ben)設(she)備(bei)采(cai)用(yong)負高(gao)(gao)壓制)和(he)陰(yin)極(ji)(ji)(負極(ji)(ji)) , 釋放出電子(zi)分別沉(chen)(chen)積在相(xiang)應的(de)(de)(de)(de)電極(ji)(ji)上(shang),通(tong)過(guo)設(she)備(bei)陰(yin)陽極(ji)(ji)振打(da)系(xi)統的(de)(de)(de)(de)振打(da),使(shi)(shi)沉(chen)(chen)積在陰(yin)陽電極(ji)(ji)上(shang)的(de)(de)(de)(de)粉塵(chen)(chen)(chen)(chen)振落,進(jin)(jin)人(ren)(ren)集灰斗 通(tong)過(guo)排灰裝置(zhi)放出,回收(shou)有物料,被(bei))凈化(hua)的(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)排入大氣(qi)(qi)(qi)(qi)。
工(gong)作原理
靜(jing)電(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)器的(de)(de)(de)工作原(yuan)理是利用高壓電(dian)(dian)(dian)(dian)場(chang)使煙(yan)氣(qi)(qi)發(fa)生(sheng)電(dian)(dian)(dian)(dian)離,氣(qi)(qi)流(liu)(liu)中的(de)(de)(de)粉塵(chen)(chen)(chen)荷電(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)場(chang)作用下與氣(qi)(qi)流(liu)(liu)分離。負極(ji)由(you)不(bu)(bu)同斷面(mian)形(xing)狀(zhuang)的(de)(de)(de)金(jin)屬導(dao)(dao)線制成,叫(jiao)放電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極(ji)。正(zheng)極(ji)由(you)不(bu)(bu)同幾何形(xing)狀(zhuang)的(de)(de)(de)金(jin)屬板制成,叫(jiao)集(ji)塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)。靜(jing)電(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)器的(de)(de)(de)性(xing)能受粉塵(chen)(chen)(chen)性(xing)質、設備構(gou)造(zao)和煙(yan)氣(qi)(qi)流(liu)(liu)速(su)等三個因素(su)的(de)(de)(de)影(ying)響。粉塵(chen)(chen)(chen)的(de)(de)(de)比(bi)電(dian)(dian)(dian)(dian)阻是評價(jia)導(dao)(dao)電(dian)(dian)(dian)(dian)性(xing)的(de)(de)(de)指標(biao),它(ta)對除塵(chen)(chen)(chen)效率(lv)有直接的(de)(de)(de)影(ying)響。比(bi)電(dian)(dian)(dian)(dian)阻過低(di),塵(chen)(chen)(chen)粒難以(yi)保持在(zai)集(ji)塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)上,致使其重返氣(qi)(qi)流(liu)(liu)。比(bi)電(dian)(dian)(dian)(dian)阻過高,到達(da)集(ji)塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)的(de)(de)(de)塵(chen)(chen)(chen)粒電(dian)(dian)(dian)(dian)荷不(bu)(bu)易放出,在(zai)塵(chen)(chen)(chen)層之間形(xing)成電(dian)(dian)(dian)(dian)壓梯度會產生(sheng)局部擊穿和放電(dian)(dian)(dian)(dian)現象。這些情況都會造(zao)成除塵(chen)(chen)(chen)效率(lv)下降。
電(dian)(dian)除(chu)塵(chen)器的(de)(de)基本(ben)原理是利用電(dian)(dian)力捕集煙氣(qi)中的(de)(de)粉塵(chen),主要包(bao)括以(yi)下(xia)四個(ge)相互有(you)關(guan)的(de)(de)物理過程: (1) 氣(qi)體的(de)(de)電(dian)(dian)離。(2) 粉塵(chen)的(de)(de)荷(he)電(dian)(dian)。(3) 荷(he)電(dian)(dian)粉塵(chen)向電(dian)(dian)極移(yi)動。(4) 荷(he)電(dian)(dian)粉塵(chen)的(de)(de)捕集。