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)(dian)(dian)除塵(chen)(chen)器是以靜電(dian)(dian)(dian)(dian)(dian)凈(jing)(jing)化法來收捕廢氣中(zhong)的(de)(de)粉(fen)塵(chen)(chen),它的(de)(de)凈(jing)(jing)化工作(zuo)上要是依靠(kao)電(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)(ji)和(he)沉(chen)(chen)淀兩個系(xi)統來完成的(de)(de),當(dang)含塵(chen)(chen)氣體(ti)(ti)(ti)進(jin)人(ren)氣刺叭(ba)時,含塵(chen)(chen)氣體(ti)(ti)(ti)受到氣流(liu)分布板以及折流(liu)板的(de)(de)調整(zheng)后(hou),使氣流(liu)能(neng)較均勻地(di)進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)場。在(zai)橫斷(duan)面擴大(da)的(de)(de)作(zuo)用(yong)下,氣流(liu)速度(du)迅速降(jiang)低,其中(zhong)有些(xie)較重的(de)(de)塵(chen)(chen)粒(li)便失去(qu)速度(du)而(er)沉(chen)(chen)降(jiang)下來。進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)場的(de)(de)含塵(chen)(chen)氣體(ti)(ti)(ti)由(you)于電(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)(ji)通人(ren)高(gao)壓直流(liu)電(dian)(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)(ji)附近產生電(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)現(xian)象(xiang),使氣體(ti)(ti)(ti)電(dian)(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)(dian)離(li)后(hou)的(de)(de)氣體(ti)(ti)(ti)中(zhong)存(cun)在(zai)大(da)量的(de)(de)電(dian)(dian)(dian)(dian)(dian)子(zi)和(he)離(li)子(zi),這些(xie)電(dian)(dian)(dian)(dian)(dian)子(zi)和(he)離(li)子(zi)與進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)場的(de)(de)粉(fen)塵(chen)(chen)結合起來,使塵(chen)(chen)粒(li)帶電(dian)(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)粒(li)在(zai)電(dian)(dian)(dian)(dian)(dian)場力的(de)(de)作(zuo)用(yong)下趨向本設備(bei)陽(yang)極(ji)(ji)(ji)(正極(ji)(ji)(ji)、本設備(bei)采(cai)用(yong)負高(gao)壓制)和(he)陰(yin)(yin)極(ji)(ji)(ji)(負極(ji)(ji)(ji)) , 釋放出電(dian)(dian)(dian)(dian)(dian)子(zi)分別沉(chen)(chen)積(ji)在(zai)相(xiang)應的(de)(de)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上,通過設備(bei)陰(yin)(yin)陽(yang)極(ji)(ji)(ji)振打(da)系(xi)統的(de)(de)振打(da),使沉(chen)(chen)積(ji)在(zai)陰(yin)(yin)陽(yang)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上的(de)(de)粉(fen)塵(chen)(chen)振落,進(jin)人(ren)集(ji)灰(hui)斗 通過排(pai)灰(hui)裝置放出,回收有物(wu)料,被)凈(jing)(jing)化的(de)(de)氣體(ti)(ti)(ti)排(pai)入大(da)氣。
工(gong)作(zuo)原(yuan)理
靜(jing)電除(chu)塵(chen)(chen)(chen)器(qi)的(de)(de)(de)工作原理是(shi)利用高壓電場使(shi)煙氣(qi)發生電離,氣(qi)流(liu)中(zhong)的(de)(de)(de)粉塵(chen)(chen)(chen)荷電在電場作用下(xia)與氣(qi)流(liu)分離。負極(ji)(ji)由不(bu)同(tong)(tong)斷(duan)面(mian)形狀的(de)(de)(de)金(jin)屬(shu)(shu)導線制成(cheng),叫(jiao)放電電極(ji)(ji)。正極(ji)(ji)由不(bu)同(tong)(tong)幾何形狀的(de)(de)(de)金(jin)屬(shu)(shu)板制成(cheng),叫(jiao)集(ji)塵(chen)(chen)(chen)電極(ji)(ji)。靜(jing)電除(chu)塵(chen)(chen)(chen)器(qi)的(de)(de)(de)性能受(shou)粉塵(chen)(chen)(chen)性質、設備構造和煙氣(qi)流(liu)速等三個因(yin)素(su)的(de)(de)(de)影響(xiang)。粉塵(chen)(chen)(chen)的(de)(de)(de)比(bi)電阻是(shi)評(ping)價導電性的(de)(de)(de)指標,它對除(chu)塵(chen)(chen)(chen)效率有直接(jie)的(de)(de)(de)影響(xiang)。比(bi)電阻過低,塵(chen)(chen)(chen)粒難以保(bao)持在集(ji)塵(chen)(chen)(chen)電極(ji)(ji)上(shang),致使(shi)其重返氣(qi)流(liu)。比(bi)電阻過高,到(dao)達集(ji)塵(chen)(chen)(chen)電極(ji)(ji)的(de)(de)(de)塵(chen)(chen)(chen)粒電荷不(bu)易放出(chu),在塵(chen)(chen)(chen)層之(zhi)間形成(cheng)電壓梯度會產生局部擊穿(chuan)和放電現(xian)象。這(zhe)些情(qing)況都會造成(cheng)除(chu)塵(chen)(chen)(chen)效率下(xia)降。
電(dian)(dian)除塵器的基(ji)本(ben)原理(li)是利用(yong)電(dian)(dian)力捕(bu)集煙氣(qi)中的粉(fen)(fen)塵,主要包(bao)括以下四個(ge)相互(hu)有關的物理(li)過程: (1) 氣(qi)體的電(dian)(dian)離(li)。(2) 粉(fen)(fen)塵的荷(he)電(dian)(dian)。(3) 荷(he)電(dian)(dian)粉(fen)(fen)塵向電(dian)(dian)極(ji)移(yi)動。(4) 荷(he)電(dian)(dian)粉(fen)(fen)塵的捕(bu)集。