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(shi)靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)除塵(chen)器(qi)是(shi)以靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)凈化法(fa)來(lai)收捕廢氣(qi)中的(de)粉(fen)(fen)塵(chen),它的(de)凈化工作(zuo)上(shang)要是(shi)依靠電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)極(ji)(ji)(ji)和沉(chen)(chen)淀兩個(ge)系(xi)統(tong)來(lai)完成的(de),當(dang)含塵(chen)氣(qi)體(ti)(ti)(ti)進(jin)人(ren)(ren)氣(qi)刺叭時,含塵(chen)氣(qi)體(ti)(ti)(ti)受到(dao)氣(qi)流(liu)分(fen)布(bu)板(ban)以及折流(liu)板(ban)的(de)調(diao)整后,使(shi)(shi)氣(qi)流(liu)能較(jiao)均(jun)勻地(di)進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)。在(zai)橫斷面擴大的(de)作(zuo)用下(xia),氣(qi)流(liu)速度迅速降低(di),其中有些(xie)較(jiao)重的(de)塵(chen)粒(li)(li)便失(shi)去速度而沉(chen)(chen)降下(xia)來(lai)。進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)的(de)含塵(chen)氣(qi)體(ti)(ti)(ti)由(you)于電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)極(ji)(ji)(ji)通人(ren)(ren)高(gao)壓(ya)直(zhi)流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)極(ji)(ji)(ji)附近(jin)產生(sheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)(yun)現象,使(shi)(shi)氣(qi)體(ti)(ti)(ti)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)離(li)(li)(li),電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)離(li)(li)(li)后的(de)氣(qi)體(ti)(ti)(ti)中存在(zai)大量的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子和離(li)(li)(li)子,這些(xie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子和離(li)(li)(li)子與進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)的(de)粉(fen)(fen)塵(chen)結(jie)合起來(lai),使(shi)(shi)塵(chen)粒(li)(li)帶電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)塵(chen)粒(li)(li)在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)力的(de)作(zuo)用下(xia)趨向本(ben)設(she)(she)備(bei)(bei)陽極(ji)(ji)(ji)(正極(ji)(ji)(ji)、本(ben)設(she)(she)備(bei)(bei)采用負高(gao)壓(ya)制)和陰(yin)極(ji)(ji)(ji)(負極(ji)(ji)(ji)) , 釋(shi)放(fang)出(chu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子分(fen)別沉(chen)(chen)積在(zai)相應(ying)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上(shang),通過設(she)(she)備(bei)(bei)陰(yin)陽極(ji)(ji)(ji)振(zhen)(zhen)(zhen)打(da)(da)系(xi)統(tong)的(de)振(zhen)(zhen)(zhen)打(da)(da),使(shi)(shi)沉(chen)(chen)積在(zai)陰(yin)陽電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上(shang)的(de)粉(fen)(fen)塵(chen)振(zhen)(zhen)(zhen)落,進(jin)人(ren)(ren)集灰斗 通過排灰裝置(zhi)放(fang)出(chu),回收有物(wu)料,被)凈化的(de)氣(qi)體(ti)(ti)(ti)排入大氣(qi)。
工(gong)作原理
靜電(dian)(dian)(dian)(dian)除塵(chen)(chen)器(qi)的(de)(de)工作(zuo)原理是利用高(gao)壓電(dian)(dian)(dian)(dian)場使煙氣(qi)發生電(dian)(dian)(dian)(dian)離(li)(li),氣(qi)流中的(de)(de)粉(fen)塵(chen)(chen)荷電(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)場作(zuo)用下與氣(qi)流分離(li)(li)。負極由不(bu)同斷面形狀(zhuang)的(de)(de)金(jin)屬導(dao)(dao)線制(zhi)成,叫(jiao)放電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極。正極由不(bu)同幾何形狀(zhuang)的(de)(de)金(jin)屬板制(zhi)成,叫(jiao)集塵(chen)(chen)電(dian)(dian)(dian)(dian)極。靜電(dian)(dian)(dian)(dian)除塵(chen)(chen)器(qi)的(de)(de)性(xing)能受粉(fen)塵(chen)(chen)性(xing)質、設備構造(zao)和(he)煙氣(qi)流速等(deng)三個(ge)因(yin)素的(de)(de)影響(xiang)。粉(fen)塵(chen)(chen)的(de)(de)比(bi)(bi)電(dian)(dian)(dian)(dian)阻(zu)是評價導(dao)(dao)電(dian)(dian)(dian)(dian)性(xing)的(de)(de)指標,它(ta)對除塵(chen)(chen)效(xiao)率有(you)直接的(de)(de)影響(xiang)。比(bi)(bi)電(dian)(dian)(dian)(dian)阻(zu)過低,塵(chen)(chen)粒難以(yi)保持在集塵(chen)(chen)電(dian)(dian)(dian)(dian)極上,致使其重返(fan)氣(qi)流。比(bi)(bi)電(dian)(dian)(dian)(dian)阻(zu)過高(gao),到達集塵(chen)(chen)電(dian)(dian)(dian)(dian)極的(de)(de)塵(chen)(chen)粒電(dian)(dian)(dian)(dian)荷不(bu)易放出,在塵(chen)(chen)層之間形成電(dian)(dian)(dian)(dian)壓梯度會產生局部擊穿(chuan)和(he)放電(dian)(dian)(dian)(dian)現(xian)象。這(zhe)些情(qing)況都會造(zao)成除塵(chen)(chen)效(xiao)率下降。
電(dian)(dian)除(chu)塵(chen)器(qi)的(de)(de)(de)基本原(yuan)理是(shi)利用電(dian)(dian)力捕集煙氣中的(de)(de)(de)粉(fen)(fen)塵(chen),主(zhu)要包(bao)括以(yi)下(xia)四個(ge)相互有關的(de)(de)(de)物(wu)理過程: (1) 氣體的(de)(de)(de)電(dian)(dian)離。(2) 粉(fen)(fen)塵(chen)的(de)(de)(de)荷(he)電(dian)(dian)。(3) 荷(he)電(dian)(dian)粉(fen)(fen)塵(chen)向(xiang)電(dian)(dian)極移動。(4) 荷(he)電(dian)(dian)粉(fen)(fen)塵(chen)的(de)(de)(de)捕集。