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)器(qi)是以靜電(dian)(dian)(dian)(dian)凈化(hua)法來收(shou)捕(bu)廢(fei)氣(qi)(qi)(qi)中(zhong)(zhong)的(de)(de)(de)(de)(de)(de)粉塵(chen),它的(de)(de)(de)(de)(de)(de)凈化(hua)工作(zuo)上(shang)要是依靠電(dian)(dian)(dian)(dian)暈極(ji)(ji)和(he)(he)沉(chen)(chen)淀兩個(ge)系統來完成的(de)(de)(de)(de)(de)(de),當含塵(chen)氣(qi)(qi)(qi)體(ti)(ti)(ti)進(jin)人(ren)氣(qi)(qi)(qi)刺叭(ba)時,含塵(chen)氣(qi)(qi)(qi)體(ti)(ti)(ti)受到氣(qi)(qi)(qi)流(liu)分布板(ban)以及折流(liu)板(ban)的(de)(de)(de)(de)(de)(de)調整后,使氣(qi)(qi)(qi)流(liu)能較(jiao)均勻地進(jin)人(ren)電(dian)(dian)(dian)(dian)場(chang)。在(zai)橫(heng)斷面擴(kuo)大(da)的(de)(de)(de)(de)(de)(de)作(zuo)用(yong)下(xia),氣(qi)(qi)(qi)流(liu)速度迅(xun)速降低,其(qi)中(zhong)(zhong)有(you)些較(jiao)重的(de)(de)(de)(de)(de)(de)塵(chen)粒便失去速度而沉(chen)(chen)降下(xia)來。進(jin)人(ren)電(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)(de)(de)含塵(chen)氣(qi)(qi)(qi)體(ti)(ti)(ti)由于電(dian)(dian)(dian)(dian)暈極(ji)(ji)通(tong)人(ren)高(gao)壓直流(liu)電(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)暈極(ji)(ji)附(fu)近產(chan)生(sheng)電(dian)(dian)(dian)(dian)暈現(xian)象,使氣(qi)(qi)(qi)體(ti)(ti)(ti)電(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)離(li)后的(de)(de)(de)(de)(de)(de)氣(qi)(qi)(qi)體(ti)(ti)(ti)中(zhong)(zhong)存在(zai)大(da)量的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)子(zi)(zi)和(he)(he)離(li)子(zi)(zi),這些電(dian)(dian)(dian)(dian)子(zi)(zi)和(he)(he)離(li)子(zi)(zi)與進(jin)人(ren)電(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)(de)(de)粉塵(chen)結合起來,使塵(chen)粒帶電(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)塵(chen)粒在(zai)電(dian)(dian)(dian)(dian)場(chang)力的(de)(de)(de)(de)(de)(de)作(zuo)用(yong)下(xia)趨向本設(she)備(bei)陽(yang)極(ji)(ji)(正極(ji)(ji)、本設(she)備(bei)采用(yong)負(fu)高(gao)壓制)和(he)(he)陰極(ji)(ji)(負(fu)極(ji)(ji)) , 釋放出(chu)電(dian)(dian)(dian)(dian)子(zi)(zi)分別沉(chen)(chen)積在(zai)相應的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)極(ji)(ji)上(shang),通(tong)過設(she)備(bei)陰陽(yang)極(ji)(ji)振(zhen)(zhen)打(da)系統的(de)(de)(de)(de)(de)(de)振(zhen)(zhen)打(da),使沉(chen)(chen)積在(zai)陰陽(yang)電(dian)(dian)(dian)(dian)極(ji)(ji)上(shang)的(de)(de)(de)(de)(de)(de)粉塵(chen)振(zhen)(zhen)落,進(jin)人(ren)集(ji)灰(hui)斗 通(tong)過排灰(hui)裝(zhuang)置放出(chu),回收(shou)有(you)物料,被)凈化(hua)的(de)(de)(de)(de)(de)(de)氣(qi)(qi)(qi)體(ti)(ti)(ti)排入大(da)氣(qi)(qi)(qi)。
工作(zuo)原理
靜電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器(qi)的工作原理是利(li)用(yong)高壓(ya)電(dian)(dian)(dian)場(chang)使煙氣(qi)發(fa)生電(dian)(dian)(dian)離,氣(qi)流中的粉塵(chen)(chen)(chen)(chen)荷電(dian)(dian)(dian)在電(dian)(dian)(dian)場(chang)作用(yong)下與氣(qi)流分離。負極由不同斷面(mian)形(xing)狀(zhuang)的金屬(shu)導(dao)線制(zhi)成(cheng),叫放(fang)電(dian)(dian)(dian)電(dian)(dian)(dian)極。正極由不同幾何形(xing)狀(zhuang)的金屬(shu)板制(zhi)成(cheng),叫集塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)極。靜電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器(qi)的性能受粉塵(chen)(chen)(chen)(chen)性質、設備構造(zao)和煙氣(qi)流速等三(san)個因素的影響(xiang)。粉塵(chen)(chen)(chen)(chen)的比電(dian)(dian)(dian)阻是評價導(dao)電(dian)(dian)(dian)性的指(zhi)標,它對除(chu)塵(chen)(chen)(chen)(chen)效率(lv)有(you)直(zhi)接的影響(xiang)。比電(dian)(dian)(dian)阻過低,塵(chen)(chen)(chen)(chen)粒(li)難(nan)以保(bao)持在集塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)極上,致使其重返氣(qi)流。比電(dian)(dian)(dian)阻過高,到(dao)達集塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)極的塵(chen)(chen)(chen)(chen)粒(li)電(dian)(dian)(dian)荷不易放(fang)出(chu),在塵(chen)(chen)(chen)(chen)層之(zhi)間形(xing)成(cheng)電(dian)(dian)(dian)壓(ya)梯(ti)度會產生局部(bu)擊穿和放(fang)電(dian)(dian)(dian)現象。這(zhe)些情況都會造(zao)成(cheng)除(chu)塵(chen)(chen)(chen)(chen)效率(lv)下降。
電(dian)除塵(chen)器(qi)的(de)(de)基(ji)本原理(li)是(shi)利用電(dian)力捕集煙氣(qi)中的(de)(de)粉(fen)塵(chen),主要包(bao)括以下四個相互有關的(de)(de)物(wu)理(li)過程: (1) 氣(qi)體的(de)(de)電(dian)離。(2) 粉(fen)塵(chen)的(de)(de)荷(he)電(dian)。(3) 荷(he)電(dian)粉(fen)塵(chen)向電(dian)極移動。(4) 荷(he)電(dian)粉(fen)塵(chen)的(de)(de)捕集。