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)除塵(chen)(chen)(chen)(chen)(chen)器是以(yi)靜電(dian)(dian)(dian)(dian)凈化法來收捕廢氣(qi)(qi)中(zhong)的(de)(de)(de)(de)(de)(de)粉塵(chen)(chen)(chen)(chen)(chen),它的(de)(de)(de)(de)(de)(de)凈化工(gong)作上要是依靠(kao)電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)和(he)沉(chen)淀兩個(ge)系(xi)(xi)統來完(wan)成的(de)(de)(de)(de)(de)(de),當(dang)含(han)塵(chen)(chen)(chen)(chen)(chen)氣(qi)(qi)體(ti)(ti)(ti)進(jin)人(ren)(ren)(ren)氣(qi)(qi)刺(ci)叭時,含(han)塵(chen)(chen)(chen)(chen)(chen)氣(qi)(qi)體(ti)(ti)(ti)受(shou)到(dao)氣(qi)(qi)流分布板以(yi)及折(zhe)流板的(de)(de)(de)(de)(de)(de)調整(zheng)后,使(shi)(shi)氣(qi)(qi)流能較均勻(yun)地進(jin)人(ren)(ren)(ren)電(dian)(dian)(dian)(dian)場(chang)。在(zai)橫斷面擴大的(de)(de)(de)(de)(de)(de)作用下(xia)(xia),氣(qi)(qi)流速度迅(xun)速降低(di),其中(zhong)有(you)些(xie)(xie)較重的(de)(de)(de)(de)(de)(de)塵(chen)(chen)(chen)(chen)(chen)粒便失去速度而沉(chen)降下(xia)(xia)來。進(jin)人(ren)(ren)(ren)電(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)(de)(de)含(han)塵(chen)(chen)(chen)(chen)(chen)氣(qi)(qi)體(ti)(ti)(ti)由于電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)通(tong)(tong)人(ren)(ren)(ren)高壓直流電(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)附(fu)近產生電(dian)(dian)(dian)(dian)暈(yun)現(xian)象,使(shi)(shi)氣(qi)(qi)體(ti)(ti)(ti)電(dian)(dian)(dian)(dian)離(li)(li),電(dian)(dian)(dian)(dian)離(li)(li)后的(de)(de)(de)(de)(de)(de)氣(qi)(qi)體(ti)(ti)(ti)中(zhong)存在(zai)大量的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)子和(he)離(li)(li)子,這些(xie)(xie)電(dian)(dian)(dian)(dian)子和(he)離(li)(li)子與進(jin)人(ren)(ren)(ren)電(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)(de)(de)粉塵(chen)(chen)(chen)(chen)(chen)結合起(qi)來,使(shi)(shi)塵(chen)(chen)(chen)(chen)(chen)粒帶電(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)塵(chen)(chen)(chen)(chen)(chen)粒在(zai)電(dian)(dian)(dian)(dian)場(chang)力的(de)(de)(de)(de)(de)(de)作用下(xia)(xia)趨(qu)向(xiang)本設(she)備陽極(ji)(ji)(正極(ji)(ji)、本設(she)備采用負高壓制)和(he)陰極(ji)(ji)(負極(ji)(ji)) , 釋放(fang)出電(dian)(dian)(dian)(dian)子分別沉(chen)積(ji)在(zai)相應的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)極(ji)(ji)上,通(tong)(tong)過設(she)備陰陽極(ji)(ji)振(zhen)打系(xi)(xi)統的(de)(de)(de)(de)(de)(de)振(zhen)打,使(shi)(shi)沉(chen)積(ji)在(zai)陰陽電(dian)(dian)(dian)(dian)極(ji)(ji)上的(de)(de)(de)(de)(de)(de)粉塵(chen)(chen)(chen)(chen)(chen)振(zhen)落(luo),進(jin)人(ren)(ren)(ren)集灰斗 通(tong)(tong)過排灰裝置放(fang)出,回收有(you)物料,被(bei))凈化的(de)(de)(de)(de)(de)(de)氣(qi)(qi)體(ti)(ti)(ti)排入大氣(qi)(qi)。
工作原理
靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)(chen)(chen)器的(de)(de)(de)工作(zuo)原理是(shi)利用(yong)高壓電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)使煙氣發(fa)生電(dian)(dian)(dian)(dian)(dian)(dian)離(li),氣流(liu)中的(de)(de)(de)粉塵(chen)(chen)(chen)(chen)(chen)荷(he)電(dian)(dian)(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)(dian)(dian)場(chang)作(zuo)用(yong)下與氣流(liu)分離(li)。負極(ji)(ji)由不(bu)同斷面形狀(zhuang)(zhuang)的(de)(de)(de)金屬導(dao)線制(zhi)(zhi)成(cheng),叫放電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)。正極(ji)(ji)由不(bu)同幾(ji)何形狀(zhuang)(zhuang)的(de)(de)(de)金屬板制(zhi)(zhi)成(cheng),叫集塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)。靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)(chen)(chen)器的(de)(de)(de)性能受粉塵(chen)(chen)(chen)(chen)(chen)性質、設備(bei)構(gou)造(zao)和(he)煙氣流(liu)速等三個(ge)因素(su)的(de)(de)(de)影響。粉塵(chen)(chen)(chen)(chen)(chen)的(de)(de)(de)比(bi)電(dian)(dian)(dian)(dian)(dian)(dian)阻是(shi)評價導(dao)電(dian)(dian)(dian)(dian)(dian)(dian)性的(de)(de)(de)指標,它對除塵(chen)(chen)(chen)(chen)(chen)效率有(you)直接的(de)(de)(de)影響。比(bi)電(dian)(dian)(dian)(dian)(dian)(dian)阻過低,塵(chen)(chen)(chen)(chen)(chen)粒(li)難以保持(chi)在集塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上(shang),致使其重返氣流(liu)。比(bi)電(dian)(dian)(dian)(dian)(dian)(dian)阻過高,到達集塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)的(de)(de)(de)塵(chen)(chen)(chen)(chen)(chen)粒(li)電(dian)(dian)(dian)(dian)(dian)(dian)荷(he)不(bu)易(yi)放出,在塵(chen)(chen)(chen)(chen)(chen)層之(zhi)間(jian)形成(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)壓梯(ti)度會產(chan)生局部擊(ji)穿和(he)放電(dian)(dian)(dian)(dian)(dian)(dian)現(xian)象。這些情況都會造(zao)成(cheng)除塵(chen)(chen)(chen)(chen)(chen)效率下降。
電除塵(chen)器的基(ji)本原理是(shi)利(li)用電力捕集煙氣(qi)中的粉(fen)塵(chen),主要包括以(yi)下四個相互有關(guan)的物理過程(cheng): (1) 氣(qi)體的電離。(2) 粉(fen)塵(chen)的荷(he)電。(3) 荷(he)電粉(fen)塵(chen)向電極移動。(4) 荷(he)電粉(fen)塵(chen)的捕集。