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)器是(shi)以(yi)靜電(dian)(dian)(dian)凈(jing)化法來(lai)收捕(bu)廢(fei)氣(qi)中(zhong)(zhong)(zhong)的(de)(de)(de)粉塵(chen),它的(de)(de)(de)凈(jing)化工作上(shang)要是(shi)依靠電(dian)(dian)(dian)暈(yun)(yun)(yun)極(ji)和沉(chen)(chen)淀兩個系統來(lai)完(wan)成的(de)(de)(de),當含(han)塵(chen)氣(qi)體(ti)進(jin)人(ren)氣(qi)刺叭時,含(han)塵(chen)氣(qi)體(ti)受(shou)到氣(qi)流(liu)分(fen)(fen)布板以(yi)及折流(liu)板的(de)(de)(de)調整后(hou),使(shi)(shi)氣(qi)流(liu)能較(jiao)均勻(yun)地進(jin)人(ren)電(dian)(dian)(dian)場(chang)(chang)。在(zai)橫斷面擴大(da)的(de)(de)(de)作用下,氣(qi)流(liu)速度迅速降低,其(qi)中(zhong)(zhong)(zhong)有些(xie)較(jiao)重(zhong)的(de)(de)(de)塵(chen)粒(li)便失(shi)去速度而沉(chen)(chen)降下來(lai)。進(jin)人(ren)電(dian)(dian)(dian)場(chang)(chang)的(de)(de)(de)含(han)塵(chen)氣(qi)體(ti)由于電(dian)(dian)(dian)暈(yun)(yun)(yun)極(ji)通人(ren)高(gao)壓(ya)直(zhi)流(liu)電(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)暈(yun)(yun)(yun)極(ji)附近產生(sheng)電(dian)(dian)(dian)暈(yun)(yun)(yun)現象,使(shi)(shi)氣(qi)體(ti)電(dian)(dian)(dian)離(li),電(dian)(dian)(dian)離(li)后(hou)的(de)(de)(de)氣(qi)體(ti)中(zhong)(zhong)(zhong)存在(zai)大(da)量的(de)(de)(de)電(dian)(dian)(dian)子和離(li)子,這些(xie)電(dian)(dian)(dian)子和離(li)子與進(jin)人(ren)電(dian)(dian)(dian)場(chang)(chang)的(de)(de)(de)粉塵(chen)結合起來(lai),使(shi)(shi)塵(chen)粒(li)帶電(dian)(dian)(dian),帶電(dian)(dian)(dian)塵(chen)粒(li)在(zai)電(dian)(dian)(dian)場(chang)(chang)力的(de)(de)(de)作用下趨(qu)向本設(she)備陽(yang)極(ji)(正(zheng)極(ji)、本設(she)備采用負(fu)高(gao)壓(ya)制)和陰極(ji)(負(fu)極(ji)) , 釋放(fang)出(chu)電(dian)(dian)(dian)子分(fen)(fen)別(bie)沉(chen)(chen)積(ji)在(zai)相(xiang)應的(de)(de)(de)電(dian)(dian)(dian)極(ji)上(shang),通過(guo)設(she)備陰陽(yang)極(ji)振(zhen)(zhen)打(da)系統的(de)(de)(de)振(zhen)(zhen)打(da),使(shi)(shi)沉(chen)(chen)積(ji)在(zai)陰陽(yang)電(dian)(dian)(dian)極(ji)上(shang)的(de)(de)(de)粉塵(chen)振(zhen)(zhen)落,進(jin)人(ren)集(ji)灰(hui)斗(dou) 通過(guo)排灰(hui)裝(zhuang)置放(fang)出(chu),回收有物料,被(bei))凈(jing)化的(de)(de)(de)氣(qi)體(ti)排入大(da)氣(qi)。
工作原理
靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)除塵(chen)器的(de)(de)(de)工(gong)作(zuo)原理是(shi)利(li)用高壓電(dian)(dian)(dian)(dian)(dian)(dian)場使煙氣(qi)(qi)發生電(dian)(dian)(dian)(dian)(dian)(dian)離,氣(qi)(qi)流(liu)中的(de)(de)(de)粉(fen)(fen)塵(chen)荷電(dian)(dian)(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)(dian)(dian)場作(zuo)用下與(yu)氣(qi)(qi)流(liu)分離。負極(ji)由不同斷面形(xing)狀的(de)(de)(de)金(jin)屬(shu)(shu)導線制成,叫放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)。正(zheng)極(ji)由不同幾何形(xing)狀的(de)(de)(de)金(jin)屬(shu)(shu)板(ban)制成,叫集(ji)塵(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)。靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)除塵(chen)器的(de)(de)(de)性能受粉(fen)(fen)塵(chen)性質、設備(bei)構造和(he)(he)煙氣(qi)(qi)流(liu)速等三個(ge)因素的(de)(de)(de)影響(xiang)。粉(fen)(fen)塵(chen)的(de)(de)(de)比電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)是(shi)評(ping)價(jia)導電(dian)(dian)(dian)(dian)(dian)(dian)性的(de)(de)(de)指(zhi)標,它對除塵(chen)效率有直接的(de)(de)(de)影響(xiang)。比電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)過低,塵(chen)粒難以保持在集(ji)塵(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)上(shang),致使其重返氣(qi)(qi)流(liu)。比電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)過高,到達集(ji)塵(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)的(de)(de)(de)塵(chen)粒電(dian)(dian)(dian)(dian)(dian)(dian)荷不易放(fang)出,在塵(chen)層之間形(xing)成電(dian)(dian)(dian)(dian)(dian)(dian)壓梯度會產生局(ju)部擊穿和(he)(he)放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)現象。這些(xie)情況都會造成除塵(chen)效率下降。
電(dian)(dian)除(chu)塵(chen)器的(de)基本原理是(shi)利用電(dian)(dian)力捕集煙氣中(zhong)的(de)粉(fen)(fen)塵(chen),主要包括以下四(si)個相互有關的(de)物理過程: (1) 氣體的(de)電(dian)(dian)離。(2) 粉(fen)(fen)塵(chen)的(de)荷(he)電(dian)(dian)。(3) 荷(he)電(dian)(dian)粉(fen)(fen)塵(chen)向電(dian)(dian)極(ji)移動。(4) 荷(he)電(dian)(dian)粉(fen)(fen)塵(chen)的(de)捕集。