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(wo)式靜電(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)器是以靜電(dian)(dian)(dian)(dian)凈(jing)化法來收捕(bu)廢氣(qi)中的(de)(de)(de)(de)粉塵(chen)(chen),它的(de)(de)(de)(de)凈(jing)化工作上(shang)(shang)要是依(yi)靠電(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)極(ji)和沉淀兩(liang)個(ge)系統來完成的(de)(de)(de)(de),當含塵(chen)(chen)氣(qi)體(ti)進(jin)(jin)人(ren)氣(qi)刺叭時,含塵(chen)(chen)氣(qi)體(ti)受到氣(qi)流(liu)(liu)分布(bu)板以及(ji)折流(liu)(liu)板的(de)(de)(de)(de)調(diao)整后(hou),使(shi)氣(qi)流(liu)(liu)能較均(jun)勻(yun)地進(jin)(jin)人(ren)電(dian)(dian)(dian)(dian)場(chang)。在(zai)(zai)橫斷面擴(kuo)大(da)(da)的(de)(de)(de)(de)作用下(xia),氣(qi)流(liu)(liu)速度迅速降低,其中有(you)(you)些較重的(de)(de)(de)(de)塵(chen)(chen)粒(li)便失去(qu)速度而沉降下(xia)來。進(jin)(jin)人(ren)電(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)含塵(chen)(chen)氣(qi)體(ti)由(you)于電(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)極(ji)通(tong)人(ren)高壓(ya)(ya)直(zhi)流(liu)(liu)電(dian)(dian)(dian)(dian),則在(zai)(zai)電(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)極(ji)附近產(chan)生電(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)現象,使(shi)氣(qi)體(ti)電(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)離(li)后(hou)的(de)(de)(de)(de)氣(qi)體(ti)中存在(zai)(zai)大(da)(da)量的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)和離(li)子(zi)(zi)(zi),這些電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)和離(li)子(zi)(zi)(zi)與(yu)進(jin)(jin)人(ren)電(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)粉塵(chen)(chen)結合起來,使(shi)塵(chen)(chen)粒(li)帶電(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)塵(chen)(chen)粒(li)在(zai)(zai)電(dian)(dian)(dian)(dian)場(chang)力的(de)(de)(de)(de)作用下(xia)趨向(xiang)本設備陽極(ji)(正極(ji)、本設備采用負高壓(ya)(ya)制)和陰極(ji)(負極(ji)) , 釋放(fang)出(chu)電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)分別沉積(ji)在(zai)(zai)相應的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)極(ji)上(shang)(shang),通(tong)過設備陰陽極(ji)振(zhen)(zhen)打(da)(da)系統的(de)(de)(de)(de)振(zhen)(zhen)打(da)(da),使(shi)沉積(ji)在(zai)(zai)陰陽電(dian)(dian)(dian)(dian)極(ji)上(shang)(shang)的(de)(de)(de)(de)粉塵(chen)(chen)振(zhen)(zhen)落,進(jin)(jin)人(ren)集灰斗(dou) 通(tong)過排灰裝(zhuang)置放(fang)出(chu),回收有(you)(you)物(wu)料,被)凈(jing)化的(de)(de)(de)(de)氣(qi)體(ti)排入大(da)(da)氣(qi)。
工作原(yuan)理
靜電(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)(chen)器的(de)工(gong)作原理是利用高壓(ya)電(dian)(dian)(dian)(dian)(dian)場(chang)使煙氣(qi)發(fa)生電(dian)(dian)(dian)(dian)(dian)離,氣(qi)流(liu)中的(de)粉塵(chen)(chen)(chen)(chen)荷電(dian)(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)(dian)場(chang)作用下(xia)與氣(qi)流(liu)分離。負極(ji)(ji)(ji)由不同斷(duan)面形(xing)狀(zhuang)的(de)金屬導(dao)線制成(cheng),叫放(fang)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)。正極(ji)(ji)(ji)由不同幾(ji)何形(xing)狀(zhuang)的(de)金屬板制成(cheng),叫集塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)。靜電(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)(chen)器的(de)性(xing)能受粉塵(chen)(chen)(chen)(chen)性(xing)質(zhi)、設(she)備構(gou)造和煙氣(qi)流(liu)速等三個因(yin)素的(de)影(ying)響。粉塵(chen)(chen)(chen)(chen)的(de)比電(dian)(dian)(dian)(dian)(dian)阻是評價導(dao)電(dian)(dian)(dian)(dian)(dian)性(xing)的(de)指標,它對除塵(chen)(chen)(chen)(chen)效(xiao)率有直接的(de)影(ying)響。比電(dian)(dian)(dian)(dian)(dian)阻過低,塵(chen)(chen)(chen)(chen)粒難以(yi)保持在(zai)集塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上,致使其重返氣(qi)流(liu)。比電(dian)(dian)(dian)(dian)(dian)阻過高,到達(da)集塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)的(de)塵(chen)(chen)(chen)(chen)粒電(dian)(dian)(dian)(dian)(dian)荷不易放(fang)出,在(zai)塵(chen)(chen)(chen)(chen)層之間形(xing)成(cheng)電(dian)(dian)(dian)(dian)(dian)壓(ya)梯度會產生局部擊穿和放(fang)電(dian)(dian)(dian)(dian)(dian)現象。這些(xie)情況(kuang)都會造成(cheng)除塵(chen)(chen)(chen)(chen)效(xiao)率下(xia)降。
電(dian)(dian)除塵(chen)器的(de)(de)(de)基(ji)本原理是(shi)利用電(dian)(dian)力捕集煙氣中的(de)(de)(de)粉塵(chen),主要包括以下四(si)個相互有(you)關的(de)(de)(de)物理過程: (1) 氣體的(de)(de)(de)電(dian)(dian)離。(2) 粉塵(chen)的(de)(de)(de)荷電(dian)(dian)。(3) 荷電(dian)(dian)粉塵(chen)向電(dian)(dian)極移動。(4) 荷電(dian)(dian)粉塵(chen)的(de)(de)(de)捕集。