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)除塵(chen)(chen)(chen)(chen)(chen)(chen)器是以靜(jing)電(dian)(dian)(dian)(dian)凈化(hua)法來收捕廢(fei)氣(qi)中的(de)(de)(de)粉塵(chen)(chen)(chen)(chen)(chen)(chen),它的(de)(de)(de)凈化(hua)工作上(shang)要是依靠電(dian)(dian)(dian)(dian)暈(yun)極(ji)和(he)沉淀(dian)兩個(ge)系統來完成的(de)(de)(de),當(dang)含(han)塵(chen)(chen)(chen)(chen)(chen)(chen)氣(qi)體(ti)(ti)進人(ren)(ren)(ren)(ren)氣(qi)刺叭時,含(han)塵(chen)(chen)(chen)(chen)(chen)(chen)氣(qi)體(ti)(ti)受到氣(qi)流(liu)分(fen)布板以及折(zhe)流(liu)板的(de)(de)(de)調整后(hou),使(shi)氣(qi)流(liu)能較均(jun)勻地進人(ren)(ren)(ren)(ren)電(dian)(dian)(dian)(dian)場(chang)。在(zai)(zai)(zai)橫斷面擴大的(de)(de)(de)作用下(xia),氣(qi)流(liu)速(su)(su)度(du)迅速(su)(su)降低,其(qi)中有(you)些較重的(de)(de)(de)塵(chen)(chen)(chen)(chen)(chen)(chen)粒(li)便失去速(su)(su)度(du)而沉降下(xia)來。進人(ren)(ren)(ren)(ren)電(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)含(han)塵(chen)(chen)(chen)(chen)(chen)(chen)氣(qi)體(ti)(ti)由于(yu)電(dian)(dian)(dian)(dian)暈(yun)極(ji)通人(ren)(ren)(ren)(ren)高壓直(zhi)流(liu)電(dian)(dian)(dian)(dian),則在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)暈(yun)極(ji)附近產生電(dian)(dian)(dian)(dian)暈(yun)現象,使(shi)氣(qi)體(ti)(ti)電(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)離后(hou)的(de)(de)(de)氣(qi)體(ti)(ti)中存在(zai)(zai)(zai)大量的(de)(de)(de)電(dian)(dian)(dian)(dian)子(zi)和(he)離子(zi),這(zhe)些電(dian)(dian)(dian)(dian)子(zi)和(he)離子(zi)與進人(ren)(ren)(ren)(ren)電(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)粉塵(chen)(chen)(chen)(chen)(chen)(chen)結合起來,使(shi)塵(chen)(chen)(chen)(chen)(chen)(chen)粒(li)帶電(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)塵(chen)(chen)(chen)(chen)(chen)(chen)粒(li)在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)場(chang)力的(de)(de)(de)作用下(xia)趨向(xiang)本(ben)設備(bei)(bei)陽(yang)(yang)極(ji)(正極(ji)、本(ben)設備(bei)(bei)采用負高壓制)和(he)陰極(ji)(負極(ji)) , 釋放(fang)出(chu)電(dian)(dian)(dian)(dian)子(zi)分(fen)別沉積(ji)在(zai)(zai)(zai)相應(ying)的(de)(de)(de)電(dian)(dian)(dian)(dian)極(ji)上(shang),通過設備(bei)(bei)陰陽(yang)(yang)極(ji)振(zhen)打系統的(de)(de)(de)振(zhen)打,使(shi)沉積(ji)在(zai)(zai)(zai)陰陽(yang)(yang)電(dian)(dian)(dian)(dian)極(ji)上(shang)的(de)(de)(de)粉塵(chen)(chen)(chen)(chen)(chen)(chen)振(zhen)落(luo),進人(ren)(ren)(ren)(ren)集灰斗 通過排(pai)灰裝置放(fang)出(chu),回收有(you)物料,被)凈化(hua)的(de)(de)(de)氣(qi)體(ti)(ti)排(pai)入大氣(qi)。
工作原理(li)
靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)器(qi)的工作原理是利用(yong)高壓電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場使(shi)煙(yan)氣(qi)發生電(dian)(dian)(dian)(dian)(dian)(dian)(dian)離(li),氣(qi)流中的粉(fen)塵(chen)(chen)(chen)荷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場作用(yong)下(xia)與氣(qi)流分離(li)。負極(ji)由(you)不(bu)(bu)(bu)同斷(duan)面形狀的金屬導線制成(cheng),叫放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)。正極(ji)由(you)不(bu)(bu)(bu)同幾何(he)形狀的金屬板制成(cheng),叫集塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)。靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)器(qi)的性(xing)能受(shou)粉(fen)塵(chen)(chen)(chen)性(xing)質(zhi)、設備構造(zao)和煙(yan)氣(qi)流速等三個因素的影(ying)響(xiang)。粉(fen)塵(chen)(chen)(chen)的比電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻是評價導電(dian)(dian)(dian)(dian)(dian)(dian)(dian)性(xing)的指標,它(ta)對除塵(chen)(chen)(chen)效率(lv)(lv)有直(zhi)接的影(ying)響(xiang)。比電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻過低,塵(chen)(chen)(chen)粒難以保持在(zai)集塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)上,致使(shi)其重返(fan)氣(qi)流。比電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻過高,到達集塵(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)的塵(chen)(chen)(chen)粒電(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷不(bu)(bu)(bu)易(yi)放出,在(zai)塵(chen)(chen)(chen)層之間形成(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓梯度會產(chan)生局部(bu)擊(ji)穿和放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)現(xian)象。這些情況都會造(zao)成(cheng)除塵(chen)(chen)(chen)效率(lv)(lv)下(xia)降(jiang)。
電(dian)(dian)除塵(chen)(chen)器的(de)基本原理是利用(yong)電(dian)(dian)力捕(bu)(bu)集煙氣(qi)(qi)中的(de)粉塵(chen)(chen),主要包括以下四個(ge)相(xiang)互有關的(de)物理過程: (1) 氣(qi)(qi)體的(de)電(dian)(dian)離。(2) 粉塵(chen)(chen)的(de)荷(he)電(dian)(dian)。(3) 荷(he)電(dian)(dian)粉塵(chen)(chen)向電(dian)(dian)極移(yi)動。(4) 荷(he)電(dian)(dian)粉塵(chen)(chen)的(de)捕(bu)(bu)集。