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)除塵(chen)(chen)器是以(yi)靜電(dian)(dian)(dian)凈化(hua)法(fa)來收捕廢氣(qi)(qi)(qi)中(zhong)的(de)(de)(de)(de)(de)粉塵(chen)(chen),它的(de)(de)(de)(de)(de)凈化(hua)工作上要是依靠電(dian)(dian)(dian)暈(yun)(yun)極(ji)和(he)(he)沉(chen)淀兩(liang)個系(xi)統來完成(cheng)的(de)(de)(de)(de)(de),當含塵(chen)(chen)氣(qi)(qi)(qi)體(ti)進(jin)人(ren)(ren)氣(qi)(qi)(qi)刺叭時,含塵(chen)(chen)氣(qi)(qi)(qi)體(ti)受到氣(qi)(qi)(qi)流分布板以(yi)及折(zhe)流板的(de)(de)(de)(de)(de)調(diao)整后,使(shi)氣(qi)(qi)(qi)流能較均勻地進(jin)人(ren)(ren)電(dian)(dian)(dian)場。在(zai)橫斷面擴大的(de)(de)(de)(de)(de)作用下,氣(qi)(qi)(qi)流速(su)度迅速(su)降低,其中(zhong)有些較重的(de)(de)(de)(de)(de)塵(chen)(chen)粒便失去速(su)度而沉(chen)降下來。進(jin)人(ren)(ren)電(dian)(dian)(dian)場的(de)(de)(de)(de)(de)含塵(chen)(chen)氣(qi)(qi)(qi)體(ti)由于電(dian)(dian)(dian)暈(yun)(yun)極(ji)通人(ren)(ren)高(gao)壓直流電(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)暈(yun)(yun)極(ji)附近產生(sheng)電(dian)(dian)(dian)暈(yun)(yun)現象(xiang),使(shi)氣(qi)(qi)(qi)體(ti)電(dian)(dian)(dian)離,電(dian)(dian)(dian)離后的(de)(de)(de)(de)(de)氣(qi)(qi)(qi)體(ti)中(zhong)存在(zai)大量的(de)(de)(de)(de)(de)電(dian)(dian)(dian)子(zi)和(he)(he)離子(zi),這些電(dian)(dian)(dian)子(zi)和(he)(he)離子(zi)與進(jin)人(ren)(ren)電(dian)(dian)(dian)場的(de)(de)(de)(de)(de)粉塵(chen)(chen)結合起來,使(shi)塵(chen)(chen)粒帶(dai)電(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)塵(chen)(chen)粒在(zai)電(dian)(dian)(dian)場力的(de)(de)(de)(de)(de)作用下趨(qu)向本設備陽極(ji)(正(zheng)極(ji)、本設備采用負高(gao)壓制(zhi))和(he)(he)陰極(ji)(負極(ji)) , 釋放(fang)出電(dian)(dian)(dian)子(zi)分別(bie)沉(chen)積(ji)在(zai)相應的(de)(de)(de)(de)(de)電(dian)(dian)(dian)極(ji)上,通過(guo)設備陰陽極(ji)振打(da)系(xi)統的(de)(de)(de)(de)(de)振打(da),使(shi)沉(chen)積(ji)在(zai)陰陽電(dian)(dian)(dian)極(ji)上的(de)(de)(de)(de)(de)粉塵(chen)(chen)振落(luo),進(jin)人(ren)(ren)集(ji)灰(hui)斗 通過(guo)排灰(hui)裝置放(fang)出,回收有物料,被(bei))凈化(hua)的(de)(de)(de)(de)(de)氣(qi)(qi)(qi)體(ti)排入大氣(qi)(qi)(qi)。
工作原理(li)
靜(jing)電(dian)(dian)除塵(chen)(chen)(chen)(chen)器(qi)的(de)(de)(de)工作(zuo)原理是利用(yong)高壓電(dian)(dian)場使煙氣發生電(dian)(dian)離(li),氣流(liu)(liu)中的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)荷(he)電(dian)(dian)在(zai)電(dian)(dian)場作(zuo)用(yong)下(xia)(xia)與氣流(liu)(liu)分離(li)。負極(ji)(ji)由(you)不同(tong)斷面(mian)形(xing)狀的(de)(de)(de)金屬導線制(zhi)成,叫放(fang)電(dian)(dian)電(dian)(dian)極(ji)(ji)。正極(ji)(ji)由(you)不同(tong)幾何形(xing)狀的(de)(de)(de)金屬板制(zhi)成,叫集塵(chen)(chen)(chen)(chen)電(dian)(dian)極(ji)(ji)。靜(jing)電(dian)(dian)除塵(chen)(chen)(chen)(chen)器(qi)的(de)(de)(de)性(xing)能受粉(fen)塵(chen)(chen)(chen)(chen)性(xing)質、設(she)備構造和煙氣流(liu)(liu)速等三(san)個因素的(de)(de)(de)影響。粉(fen)塵(chen)(chen)(chen)(chen)的(de)(de)(de)比(bi)電(dian)(dian)阻(zu)是評價導電(dian)(dian)性(xing)的(de)(de)(de)指標,它對除塵(chen)(chen)(chen)(chen)效率(lv)有直接(jie)的(de)(de)(de)影響。比(bi)電(dian)(dian)阻(zu)過低,塵(chen)(chen)(chen)(chen)粒(li)難以保持在(zai)集塵(chen)(chen)(chen)(chen)電(dian)(dian)極(ji)(ji)上,致使其(qi)重返氣流(liu)(liu)。比(bi)電(dian)(dian)阻(zu)過高,到達集塵(chen)(chen)(chen)(chen)電(dian)(dian)極(ji)(ji)的(de)(de)(de)塵(chen)(chen)(chen)(chen)粒(li)電(dian)(dian)荷(he)不易放(fang)出(chu),在(zai)塵(chen)(chen)(chen)(chen)層之(zhi)間形(xing)成電(dian)(dian)壓梯度會產(chan)生局部(bu)擊(ji)穿和放(fang)電(dian)(dian)現(xian)象。這些情況都會造成除塵(chen)(chen)(chen)(chen)效率(lv)下(xia)(xia)降。
電(dian)(dian)(dian)除塵器的(de)基本原(yuan)理是(shi)利(li)用電(dian)(dian)(dian)力(li)捕(bu)集煙氣中的(de)粉(fen)塵,主要包(bao)括以下四個相互有關的(de)物(wu)理過程: (1) 氣體(ti)的(de)電(dian)(dian)(dian)離。(2) 粉(fen)塵的(de)荷(he)(he)電(dian)(dian)(dian)。(3) 荷(he)(he)電(dian)(dian)(dian)粉(fen)塵向電(dian)(dian)(dian)極移(yi)動。(4) 荷(he)(he)電(dian)(dian)(dian)粉(fen)塵的(de)捕(bu)集。