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(jing)電(dian)(dian)(dian)除塵(chen)(chen)器是以(yi)靜(jing)電(dian)(dian)(dian)凈化法(fa)來(lai)(lai)收捕廢氣(qi)中的(de)(de)(de)(de)粉塵(chen)(chen),它(ta)的(de)(de)(de)(de)凈化工作(zuo)(zuo)(zuo)上要(yao)是依靠電(dian)(dian)(dian)暈(yun)極(ji)(ji)和(he)沉(chen)(chen)淀兩(liang)個系統來(lai)(lai)完成的(de)(de)(de)(de),當含(han)塵(chen)(chen)氣(qi)體(ti)進人(ren)氣(qi)刺(ci)叭時,含(han)塵(chen)(chen)氣(qi)體(ti)受到(dao)氣(qi)流(liu)(liu)分布板以(yi)及折流(liu)(liu)板的(de)(de)(de)(de)調整后,使(shi)(shi)氣(qi)流(liu)(liu)能(neng)較均勻地(di)進人(ren)電(dian)(dian)(dian)場。在橫斷面擴(kuo)大(da)的(de)(de)(de)(de)作(zuo)(zuo)(zuo)用(yong)下(xia),氣(qi)流(liu)(liu)速(su)度(du)迅速(su)降低(di),其中有(you)些(xie)較重(zhong)的(de)(de)(de)(de)塵(chen)(chen)粒(li)(li)便失去速(su)度(du)而沉(chen)(chen)降下(xia)來(lai)(lai)。進人(ren)電(dian)(dian)(dian)場的(de)(de)(de)(de)含(han)塵(chen)(chen)氣(qi)體(ti)由于電(dian)(dian)(dian)暈(yun)極(ji)(ji)通(tong)人(ren)高壓(ya)直流(liu)(liu)電(dian)(dian)(dian),則(ze)在電(dian)(dian)(dian)暈(yun)極(ji)(ji)附(fu)近產生電(dian)(dian)(dian)暈(yun)現象,使(shi)(shi)氣(qi)體(ti)電(dian)(dian)(dian)離,電(dian)(dian)(dian)離后的(de)(de)(de)(de)氣(qi)體(ti)中存在大(da)量的(de)(de)(de)(de)電(dian)(dian)(dian)子(zi)和(he)離子(zi),這(zhe)些(xie)電(dian)(dian)(dian)子(zi)和(he)離子(zi)與進人(ren)電(dian)(dian)(dian)場的(de)(de)(de)(de)粉塵(chen)(chen)結合(he)起來(lai)(lai),使(shi)(shi)塵(chen)(chen)粒(li)(li)帶(dai)電(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)塵(chen)(chen)粒(li)(li)在電(dian)(dian)(dian)場力的(de)(de)(de)(de)作(zuo)(zuo)(zuo)用(yong)下(xia)趨向本設(she)備(bei)(bei)陽極(ji)(ji)(正(zheng)極(ji)(ji)、本設(she)備(bei)(bei)采用(yong)負(fu)高壓(ya)制)和(he)陰(yin)極(ji)(ji)(負(fu)極(ji)(ji)) , 釋放出電(dian)(dian)(dian)子(zi)分別沉(chen)(chen)積(ji)在相(xiang)應(ying)的(de)(de)(de)(de)電(dian)(dian)(dian)極(ji)(ji)上,通(tong)過(guo)設(she)備(bei)(bei)陰(yin)陽極(ji)(ji)振(zhen)(zhen)(zhen)打(da)系統的(de)(de)(de)(de)振(zhen)(zhen)(zhen)打(da),使(shi)(shi)沉(chen)(chen)積(ji)在陰(yin)陽電(dian)(dian)(dian)極(ji)(ji)上的(de)(de)(de)(de)粉塵(chen)(chen)振(zhen)(zhen)(zhen)落(luo),進人(ren)集灰斗 通(tong)過(guo)排灰裝(zhuang)置放出,回收有(you)物料(liao),被)凈化的(de)(de)(de)(de)氣(qi)體(ti)排入大(da)氣(qi)。
工作原理
靜(jing)電(dian)(dian)(dian)(dian)除塵(chen)(chen)器的(de)工作原理(li)是利用高壓電(dian)(dian)(dian)(dian)場(chang)(chang)使(shi)煙(yan)氣發生(sheng)(sheng)電(dian)(dian)(dian)(dian)離,氣流(liu)中的(de)粉塵(chen)(chen)荷電(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)場(chang)(chang)作用下與氣流(liu)分離。負極(ji)由不(bu)同斷面形狀的(de)金屬導(dao)線(xian)制成(cheng),叫放電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極(ji)。正極(ji)由不(bu)同幾(ji)何形狀的(de)金屬板制成(cheng),叫集(ji)塵(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)。靜(jing)電(dian)(dian)(dian)(dian)除塵(chen)(chen)器的(de)性能受粉塵(chen)(chen)性質(zhi)、設備構造和(he)煙(yan)氣流(liu)速等(deng)三個因素的(de)影響。粉塵(chen)(chen)的(de)比電(dian)(dian)(dian)(dian)阻是評價導(dao)電(dian)(dian)(dian)(dian)性的(de)指標,它(ta)對除塵(chen)(chen)效率有(you)直接的(de)影響。比電(dian)(dian)(dian)(dian)阻過低,塵(chen)(chen)粒難以保持在(zai)集(ji)塵(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)上,致使(shi)其重返氣流(liu)。比電(dian)(dian)(dian)(dian)阻過高,到達(da)集(ji)塵(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)的(de)塵(chen)(chen)粒電(dian)(dian)(dian)(dian)荷不(bu)易(yi)放出(chu),在(zai)塵(chen)(chen)層之間形成(cheng)電(dian)(dian)(dian)(dian)壓梯度會產(chan)生(sheng)(sheng)局(ju)部(bu)擊穿和(he)放電(dian)(dian)(dian)(dian)現象(xiang)。這些情(qing)況都會造成(cheng)除塵(chen)(chen)效率下降。
電(dian)(dian)除塵器的基本原理是利(li)用電(dian)(dian)力捕集煙氣(qi)中(zhong)的粉塵,主要包括以下四個(ge)相互有關的物(wu)理過程: (1) 氣(qi)體的電(dian)(dian)離。(2) 粉塵的荷(he)電(dian)(dian)。(3) 荷(he)電(dian)(dian)粉塵向電(dian)(dian)極移動。(4) 荷(he)電(dian)(dian)粉塵的捕集。