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(jing)電(dian)(dian)(dian)(dian)(dian)(dian)除塵(chen)器(qi)是(shi)以靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)凈(jing)化(hua)法來(lai)收捕廢(fei)氣(qi)(qi)(qi)中(zhong)(zhong)的(de)(de)粉塵(chen),它的(de)(de)凈(jing)化(hua)工(gong)作上(shang)要是(shi)依(yi)靠電(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)和(he)沉淀兩個系(xi)統來(lai)完成的(de)(de),當含塵(chen)氣(qi)(qi)(qi)體進人(ren)(ren)氣(qi)(qi)(qi)刺叭時,含塵(chen)氣(qi)(qi)(qi)體受到(dao)氣(qi)(qi)(qi)流(liu)分布板(ban)以及折流(liu)板(ban)的(de)(de)調整后,使(shi)氣(qi)(qi)(qi)流(liu)能較均勻(yun)地進人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場。在(zai)橫斷面擴大的(de)(de)作用下(xia),氣(qi)(qi)(qi)流(liu)速(su)度迅速(su)降低,其中(zhong)(zhong)有(you)些較重的(de)(de)塵(chen)粒(li)便失去(qu)速(su)度而沉降下(xia)來(lai)。進人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場的(de)(de)含塵(chen)氣(qi)(qi)(qi)體由于電(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)通人(ren)(ren)高壓(ya)直流(liu)電(dian)(dian)(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)附近產(chan)生(sheng)電(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)現象,使(shi)氣(qi)(qi)(qi)體電(dian)(dian)(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)(dian)(dian)離后的(de)(de)氣(qi)(qi)(qi)體中(zhong)(zhong)存在(zai)大量的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)和(he)離子(zi),這些電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)和(he)離子(zi)與進人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場的(de)(de)粉塵(chen)結合起(qi)來(lai),使(shi)塵(chen)粒(li)帶電(dian)(dian)(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)(dian)(dian)塵(chen)粒(li)在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)場力的(de)(de)作用下(xia)趨向本設備陽極(ji)(ji)(正極(ji)(ji)、本設備采用負高壓(ya)制)和(he)陰(yin)極(ji)(ji)(負極(ji)(ji)) , 釋放(fang)(fang)出(chu)電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)分別(bie)沉積在(zai)相應(ying)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上(shang),通過(guo)設備陰(yin)陽極(ji)(ji)振打系(xi)統的(de)(de)振打,使(shi)沉積在(zai)陰(yin)陽電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上(shang)的(de)(de)粉塵(chen)振落(luo),進人(ren)(ren)集灰(hui)(hui)斗 通過(guo)排灰(hui)(hui)裝置放(fang)(fang)出(chu),回收有(you)物料,被(bei))凈(jing)化(hua)的(de)(de)氣(qi)(qi)(qi)體排入大氣(qi)(qi)(qi)。
工作原理(li)
靜電(dian)(dian)(dian)(dian)除(chu)塵(chen)器(qi)的(de)(de)(de)工作(zuo)原理是利用高壓(ya)電(dian)(dian)(dian)(dian)場(chang)使煙氣(qi)發生電(dian)(dian)(dian)(dian)離(li),氣(qi)流中的(de)(de)(de)粉(fen)塵(chen)荷電(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)場(chang)作(zuo)用下與(yu)氣(qi)流分離(li)。負極由(you)(you)不同(tong)斷面形(xing)狀的(de)(de)(de)金屬導線制(zhi)成(cheng),叫放電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極。正極由(you)(you)不同(tong)幾何形(xing)狀的(de)(de)(de)金屬板制(zhi)成(cheng),叫集塵(chen)電(dian)(dian)(dian)(dian)極。靜電(dian)(dian)(dian)(dian)除(chu)塵(chen)器(qi)的(de)(de)(de)性能受粉(fen)塵(chen)性質、設備構造(zao)和煙氣(qi)流速等(deng)三(san)個因素的(de)(de)(de)影響(xiang)(xiang)。粉(fen)塵(chen)的(de)(de)(de)比(bi)電(dian)(dian)(dian)(dian)阻是評價(jia)導電(dian)(dian)(dian)(dian)性的(de)(de)(de)指(zhi)標,它對(dui)除(chu)塵(chen)效率有直接的(de)(de)(de)影響(xiang)(xiang)。比(bi)電(dian)(dian)(dian)(dian)阻過低,塵(chen)粒難以保持在集塵(chen)電(dian)(dian)(dian)(dian)極上,致使其重(zhong)返氣(qi)流。比(bi)電(dian)(dian)(dian)(dian)阻過高,到達集塵(chen)電(dian)(dian)(dian)(dian)極的(de)(de)(de)塵(chen)粒電(dian)(dian)(dian)(dian)荷不易放出,在塵(chen)層之間形(xing)成(cheng)電(dian)(dian)(dian)(dian)壓(ya)梯度會(hui)產生局(ju)部擊(ji)穿和放電(dian)(dian)(dian)(dian)現(xian)象。這些情(qing)況都會(hui)造(zao)成(cheng)除(chu)塵(chen)效率下降。
電(dian)除(chu)塵(chen)(chen)(chen)器的(de)(de)基本原理是利(li)用(yong)電(dian)力捕(bu)集煙(yan)氣中的(de)(de)粉塵(chen)(chen)(chen),主要(yao)包括(kuo)以(yi)下四個相互(hu)有關的(de)(de)物(wu)理過程: (1) 氣體的(de)(de)電(dian)離。(2) 粉塵(chen)(chen)(chen)的(de)(de)荷(he)電(dian)。(3) 荷(he)電(dian)粉塵(chen)(chen)(chen)向電(dian)極(ji)移(yi)動。(4) 荷(he)電(dian)粉塵(chen)(chen)(chen)的(de)(de)捕(bu)集。