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)除塵(chen)(chen)器是(shi)以靜電(dian)(dian)(dian)凈(jing)化法來收捕廢氣(qi)(qi)(qi)中(zhong)的(de)(de)(de)(de)粉(fen)塵(chen)(chen),它的(de)(de)(de)(de)凈(jing)化工作(zuo)上(shang)要是(shi)依靠電(dian)(dian)(dian)暈(yun)(yun)極(ji)和(he)沉淀兩個系統(tong)來完成的(de)(de)(de)(de),當(dang)含(han)塵(chen)(chen)氣(qi)(qi)(qi)體進(jin)人(ren)氣(qi)(qi)(qi)刺叭(ba)時,含(han)塵(chen)(chen)氣(qi)(qi)(qi)體受到氣(qi)(qi)(qi)流(liu)(liu)分布板以及(ji)折(zhe)流(liu)(liu)板的(de)(de)(de)(de)調整后,使氣(qi)(qi)(qi)流(liu)(liu)能較(jiao)均(jun)勻(yun)地進(jin)人(ren)電(dian)(dian)(dian)場(chang)。在(zai)(zai)(zai)橫斷面擴(kuo)大的(de)(de)(de)(de)作(zuo)用(yong)(yong)下(xia)(xia),氣(qi)(qi)(qi)流(liu)(liu)速度迅(xun)速降低,其中(zhong)有些較(jiao)重(zhong)的(de)(de)(de)(de)塵(chen)(chen)粒(li)便失去速度而(er)沉降下(xia)(xia)來。進(jin)人(ren)電(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)含(han)塵(chen)(chen)氣(qi)(qi)(qi)體由于(yu)電(dian)(dian)(dian)暈(yun)(yun)極(ji)通人(ren)高壓(ya)(ya)直流(liu)(liu)電(dian)(dian)(dian),則在(zai)(zai)(zai)電(dian)(dian)(dian)暈(yun)(yun)極(ji)附近產(chan)生電(dian)(dian)(dian)暈(yun)(yun)現象,使氣(qi)(qi)(qi)體電(dian)(dian)(dian)離(li)(li),電(dian)(dian)(dian)離(li)(li)后的(de)(de)(de)(de)氣(qi)(qi)(qi)體中(zhong)存(cun)在(zai)(zai)(zai)大量的(de)(de)(de)(de)電(dian)(dian)(dian)子和(he)離(li)(li)子,這(zhe)些電(dian)(dian)(dian)子和(he)離(li)(li)子與(yu)進(jin)人(ren)電(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)粉(fen)塵(chen)(chen)結合(he)起來,使塵(chen)(chen)粒(li)帶(dai)電(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)塵(chen)(chen)粒(li)在(zai)(zai)(zai)電(dian)(dian)(dian)場(chang)力的(de)(de)(de)(de)作(zuo)用(yong)(yong)下(xia)(xia)趨向本(ben)設備陽(yang)極(ji)(正(zheng)極(ji)、本(ben)設備采用(yong)(yong)負高壓(ya)(ya)制)和(he)陰極(ji)(負極(ji)) , 釋放出電(dian)(dian)(dian)子分別沉積(ji)在(zai)(zai)(zai)相應的(de)(de)(de)(de)電(dian)(dian)(dian)極(ji)上(shang),通過設備陰陽(yang)極(ji)振(zhen)(zhen)打(da)系統(tong)的(de)(de)(de)(de)振(zhen)(zhen)打(da),使沉積(ji)在(zai)(zai)(zai)陰陽(yang)電(dian)(dian)(dian)極(ji)上(shang)的(de)(de)(de)(de)粉(fen)塵(chen)(chen)振(zhen)(zhen)落(luo),進(jin)人(ren)集(ji)灰斗 通過排(pai)灰裝置放出,回收有物料,被)凈(jing)化的(de)(de)(de)(de)氣(qi)(qi)(qi)體排(pai)入大氣(qi)(qi)(qi)。
工作原理
靜電(dian)(dian)除塵(chen)(chen)(chen)器的工作(zuo)(zuo)原(yuan)理是利用高壓(ya)電(dian)(dian)場(chang)使煙(yan)氣(qi)發生電(dian)(dian)離,氣(qi)流中(zhong)的粉(fen)塵(chen)(chen)(chen)荷電(dian)(dian)在(zai)電(dian)(dian)場(chang)作(zuo)(zuo)用下與氣(qi)流分(fen)離。負(fu)極由(you)不同(tong)斷(duan)面形狀的金屬導線制成,叫放(fang)電(dian)(dian)電(dian)(dian)極。正(zheng)極由(you)不同(tong)幾何形狀的金屬板制成,叫集塵(chen)(chen)(chen)電(dian)(dian)極。靜電(dian)(dian)除塵(chen)(chen)(chen)器的性(xing)能受粉(fen)塵(chen)(chen)(chen)性(xing)質、設備構造(zao)和(he)煙(yan)氣(qi)流速(su)等三(san)個因素的影響。粉(fen)塵(chen)(chen)(chen)的比電(dian)(dian)阻是評價導電(dian)(dian)性(xing)的指標,它對除塵(chen)(chen)(chen)效率有直接的影響。比電(dian)(dian)阻過低(di),塵(chen)(chen)(chen)粒難以保(bao)持(chi)在(zai)集塵(chen)(chen)(chen)電(dian)(dian)極上,致使其重(zhong)返氣(qi)流。比電(dian)(dian)阻過高,到達集塵(chen)(chen)(chen)電(dian)(dian)極的塵(chen)(chen)(chen)粒電(dian)(dian)荷不易放(fang)出,在(zai)塵(chen)(chen)(chen)層之間形成電(dian)(dian)壓(ya)梯(ti)度會(hui)產生局部擊穿和(he)放(fang)電(dian)(dian)現象。這些情況都會(hui)造(zao)成除塵(chen)(chen)(chen)效率下降。
電(dian)(dian)(dian)(dian)除塵器的(de)基本原理是利用電(dian)(dian)(dian)(dian)力捕集煙氣中的(de)粉(fen)塵,主要包括以(yi)下四個(ge)相互有關的(de)物(wu)理過程: (1) 氣體的(de)電(dian)(dian)(dian)(dian)離(li)。(2) 粉(fen)塵的(de)荷(he)電(dian)(dian)(dian)(dian)。(3) 荷(he)電(dian)(dian)(dian)(dian)粉(fen)塵向電(dian)(dian)(dian)(dian)極移動。(4) 荷(he)電(dian)(dian)(dian)(dian)粉(fen)塵的(de)捕集。