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)除塵(chen)(chen)器是以靜(jing)電(dian)(dian)(dian)凈(jing)化(hua)(hua)法來收捕廢氣(qi)中(zhong)的(de)(de)(de)(de)(de)粉塵(chen)(chen),它的(de)(de)(de)(de)(de)凈(jing)化(hua)(hua)工作(zuo)上(shang)要是依靠(kao)電(dian)(dian)(dian)暈極(ji)(ji)(ji)和(he)(he)沉淀(dian)兩個系統(tong)來完成的(de)(de)(de)(de)(de),當含塵(chen)(chen)氣(qi)體(ti)(ti)(ti)進(jin)(jin)人(ren)(ren)(ren)(ren)氣(qi)刺(ci)叭(ba)時,含塵(chen)(chen)氣(qi)體(ti)(ti)(ti)受到氣(qi)流(liu)(liu)分布(bu)板以及折流(liu)(liu)板的(de)(de)(de)(de)(de)調整(zheng)后,使(shi)氣(qi)流(liu)(liu)能(neng)較(jiao)均勻地進(jin)(jin)人(ren)(ren)(ren)(ren)電(dian)(dian)(dian)場(chang)。在(zai)(zai)橫斷面擴(kuo)大(da)的(de)(de)(de)(de)(de)作(zuo)用(yong)下,氣(qi)流(liu)(liu)速(su)度(du)迅速(su)降(jiang)低,其中(zhong)有(you)些較(jiao)重的(de)(de)(de)(de)(de)塵(chen)(chen)粒(li)(li)便失(shi)去速(su)度(du)而沉降(jiang)下來。進(jin)(jin)人(ren)(ren)(ren)(ren)電(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)(de)含塵(chen)(chen)氣(qi)體(ti)(ti)(ti)由于(yu)電(dian)(dian)(dian)暈極(ji)(ji)(ji)通(tong)人(ren)(ren)(ren)(ren)高壓直流(liu)(liu)電(dian)(dian)(dian),則在(zai)(zai)電(dian)(dian)(dian)暈極(ji)(ji)(ji)附近(jin)產(chan)生電(dian)(dian)(dian)暈現象,使(shi)氣(qi)體(ti)(ti)(ti)電(dian)(dian)(dian)離(li),電(dian)(dian)(dian)離(li)后的(de)(de)(de)(de)(de)氣(qi)體(ti)(ti)(ti)中(zhong)存在(zai)(zai)大(da)量(liang)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)子(zi)(zi)和(he)(he)離(li)子(zi)(zi),這些電(dian)(dian)(dian)子(zi)(zi)和(he)(he)離(li)子(zi)(zi)與(yu)進(jin)(jin)人(ren)(ren)(ren)(ren)電(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)(de)粉塵(chen)(chen)結(jie)合起來,使(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(zai)(zai)電(dian)(dian)(dian)場(chang)力的(de)(de)(de)(de)(de)作(zuo)用(yong)下趨向(xiang)本(ben)(ben)設(she)備陽(yang)極(ji)(ji)(ji)(正極(ji)(ji)(ji)、本(ben)(ben)設(she)備采用(yong)負高壓制(zhi))和(he)(he)陰極(ji)(ji)(ji)(負極(ji)(ji)(ji)) , 釋(shi)放(fang)出(chu)電(dian)(dian)(dian)子(zi)(zi)分別(bie)沉積在(zai)(zai)相應的(de)(de)(de)(de)(de)電(dian)(dian)(dian)極(ji)(ji)(ji)上(shang),通(tong)過設(she)備陰陽(yang)極(ji)(ji)(ji)振(zhen)打系統(tong)的(de)(de)(de)(de)(de)振(zhen)打,使(shi)沉積在(zai)(zai)陰陽(yang)電(dian)(dian)(dian)極(ji)(ji)(ji)上(shang)的(de)(de)(de)(de)(de)粉塵(chen)(chen)振(zhen)落,進(jin)(jin)人(ren)(ren)(ren)(ren)集灰斗(dou) 通(tong)過排(pai)(pai)灰裝置放(fang)出(chu),回收有(you)物(wu)料,被)凈(jing)化(hua)(hua)的(de)(de)(de)(de)(de)氣(qi)體(ti)(ti)(ti)排(pai)(pai)入大(da)氣(qi)。
工作原(yuan)理
靜(jing)電(dian)(dian)除(chu)塵(chen)器(qi)的(de)工作原理(li)是利用(yong)高壓電(dian)(dian)場使(shi)煙氣發生電(dian)(dian)離,氣流(liu)(liu)(liu)中的(de)粉(fen)(fen)塵(chen)荷電(dian)(dian)在(zai)電(dian)(dian)場作用(yong)下與氣流(liu)(liu)(liu)分離。負極由(you)不同(tong)斷面形(xing)(xing)狀的(de)金屬導(dao)(dao)線制成,叫放電(dian)(dian)電(dian)(dian)極。正極由(you)不同(tong)幾何形(xing)(xing)狀的(de)金屬板制成,叫集(ji)塵(chen)電(dian)(dian)極。靜(jing)電(dian)(dian)除(chu)塵(chen)器(qi)的(de)性能受粉(fen)(fen)塵(chen)性質、設備構造(zao)和(he)煙氣流(liu)(liu)(liu)速等三個因素的(de)影響(xiang)。粉(fen)(fen)塵(chen)的(de)比(bi)電(dian)(dian)阻是評價導(dao)(dao)電(dian)(dian)性的(de)指(zhi)標,它對(dui)除(chu)塵(chen)效(xiao)率有直接的(de)影響(xiang)。比(bi)電(dian)(dian)阻過低,塵(chen)粒難以保持在(zai)集(ji)塵(chen)電(dian)(dian)極上,致(zhi)使(shi)其重返氣流(liu)(liu)(liu)。比(bi)電(dian)(dian)阻過高,到(dao)達集(ji)塵(chen)電(dian)(dian)極的(de)塵(chen)粒電(dian)(dian)荷不易放出,在(zai)塵(chen)層之間形(xing)(xing)成電(dian)(dian)壓梯度(du)會(hui)產生局部擊穿和(he)放電(dian)(dian)現象(xiang)。這些情況都(dou)會(hui)造(zao)成除(chu)塵(chen)效(xiao)率下降(jiang)。
電(dian)(dian)除塵(chen)器的(de)基(ji)本(ben)原理(li)(li)是利用電(dian)(dian)力捕(bu)(bu)集煙氣(qi)中的(de)粉(fen)(fen)塵(chen),主要包括(kuo)以(yi)下(xia)四個(ge)相(xiang)互有關(guan)的(de)物理(li)(li)過程(cheng): (1) 氣(qi)體(ti)的(de)電(dian)(dian)離。(2) 粉(fen)(fen)塵(chen)的(de)荷(he)(he)電(dian)(dian)。(3) 荷(he)(he)電(dian)(dian)粉(fen)(fen)塵(chen)向電(dian)(dian)極移動(dong)。(4) 荷(he)(he)電(dian)(dian)粉(fen)(fen)塵(chen)的(de)捕(bu)(bu)集。