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)靜電(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)器是(shi)以靜電(dian)(dian)(dian)(dian)(dian)凈化(hua)(hua)法來收(shou)捕廢(fei)氣(qi)中的(de)(de)粉(fen)塵(chen)(chen)(chen),它的(de)(de)凈化(hua)(hua)工作(zuo)上(shang)(shang)要是(shi)依靠電(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)和沉(chen)淀兩個系(xi)統來完成的(de)(de),當含塵(chen)(chen)(chen)氣(qi)體(ti)(ti)進人(ren)(ren)氣(qi)刺叭時,含塵(chen)(chen)(chen)氣(qi)體(ti)(ti)受到(dao)氣(qi)流(liu)分(fen)布板(ban)以及折流(liu)板(ban)的(de)(de)調整后,使(shi)氣(qi)流(liu)能較(jiao)均勻地進人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)(chang)。在(zai)(zai)(zai)橫斷面擴大(da)的(de)(de)作(zuo)用(yong)(yong)下,氣(qi)流(liu)速(su)度迅速(su)降低(di),其中有些較(jiao)重的(de)(de)塵(chen)(chen)(chen)粒(li)便失(shi)去速(su)度而沉(chen)降下來。進人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)(chang)的(de)(de)含塵(chen)(chen)(chen)氣(qi)體(ti)(ti)由于(yu)電(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)通人(ren)(ren)高壓直流(liu)電(dian)(dian)(dian)(dian)(dian),則在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)附近產生電(dian)(dian)(dian)(dian)(dian)暈現(xian)象,使(shi)氣(qi)體(ti)(ti)電(dian)(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)(dian)離(li)后的(de)(de)氣(qi)體(ti)(ti)中存在(zai)(zai)(zai)大(da)量的(de)(de)電(dian)(dian)(dian)(dian)(dian)子和離(li)子,這些電(dian)(dian)(dian)(dian)(dian)子和離(li)子與進人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)(chang)的(de)(de)粉(fen)塵(chen)(chen)(chen)結合起來,使(shi)塵(chen)(chen)(chen)粒(li)帶(dai)電(dian)(dian)(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)(chen)粒(li)在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)場(chang)(chang)力的(de)(de)作(zuo)用(yong)(yong)下趨向本設備陽(yang)極(ji)(ji)(正(zheng)極(ji)(ji)、本設備采用(yong)(yong)負(fu)高壓制)和陰(yin)(yin)極(ji)(ji)(負(fu)極(ji)(ji)) , 釋放出電(dian)(dian)(dian)(dian)(dian)子分(fen)別沉(chen)積在(zai)(zai)(zai)相應的(de)(de)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上(shang)(shang),通過設備陰(yin)(yin)陽(yang)極(ji)(ji)振(zhen)打系(xi)統的(de)(de)振(zhen)打,使(shi)沉(chen)積在(zai)(zai)(zai)陰(yin)(yin)陽(yang)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上(shang)(shang)的(de)(de)粉(fen)塵(chen)(chen)(chen)振(zhen)落,進人(ren)(ren)集灰斗 通過排(pai)灰裝置放出,回收(shou)有物料,被(bei))凈化(hua)(hua)的(de)(de)氣(qi)體(ti)(ti)排(pai)入(ru)大(da)氣(qi)。
工作原理
靜電(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)器(qi)的(de)(de)(de)工作原理是利(li)用(yong)高壓(ya)電(dian)(dian)(dian)(dian)(dian)場使(shi)煙氣(qi)發生電(dian)(dian)(dian)(dian)(dian)離,氣(qi)流(liu)中的(de)(de)(de)粉塵(chen)荷電(dian)(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)(dian)場作用(yong)下與(yu)氣(qi)流(liu)分離。負(fu)極(ji)(ji)(ji)(ji)由不同斷面形(xing)(xing)狀的(de)(de)(de)金屬導線(xian)制(zhi)成(cheng),叫放(fang)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)。正極(ji)(ji)(ji)(ji)由不同幾何(he)形(xing)(xing)狀的(de)(de)(de)金屬板(ban)制(zhi)成(cheng),叫集塵(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)。靜電(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)器(qi)的(de)(de)(de)性能受(shou)粉塵(chen)性質、設備構造和(he)煙氣(qi)流(liu)速(su)等(deng)三(san)個因(yin)素的(de)(de)(de)影響。粉塵(chen)的(de)(de)(de)比電(dian)(dian)(dian)(dian)(dian)阻是評價導電(dian)(dian)(dian)(dian)(dian)性的(de)(de)(de)指(zhi)標,它對除(chu)塵(chen)效率(lv)有直(zhi)接(jie)的(de)(de)(de)影響。比電(dian)(dian)(dian)(dian)(dian)阻過低,塵(chen)粒(li)難以保持在集塵(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上,致使(shi)其重返氣(qi)流(liu)。比電(dian)(dian)(dian)(dian)(dian)阻過高,到達集塵(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)的(de)(de)(de)塵(chen)粒(li)電(dian)(dian)(dian)(dian)(dian)荷不易放(fang)出,在塵(chen)層之(zhi)間形(xing)(xing)成(cheng)電(dian)(dian)(dian)(dian)(dian)壓(ya)梯(ti)度會(hui)產生局部擊穿和(he)放(fang)電(dian)(dian)(dian)(dian)(dian)現象。這些情況都(dou)會(hui)造成(cheng)除(chu)塵(chen)效率(lv)下降。
電(dian)(dian)(dian)除塵(chen)器的(de)(de)基本原理是利用電(dian)(dian)(dian)力捕集煙氣中的(de)(de)粉塵(chen),主要(yao)包(bao)括以下(xia)四個(ge)相互有(you)關(guan)的(de)(de)物(wu)理過(guo)程: (1) 氣體(ti)的(de)(de)電(dian)(dian)(dian)離(li)。(2) 粉塵(chen)的(de)(de)荷(he)電(dian)(dian)(dian)。(3) 荷(he)電(dian)(dian)(dian)粉塵(chen)向電(dian)(dian)(dian)極移(yi)動。(4) 荷(he)電(dian)(dian)(dian)粉塵(chen)的(de)(de)捕集。