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)器是以靜(jing)電(dian)(dian)(dian)(dian)凈(jing)(jing)化法來收(shou)捕(bu)廢氣(qi)中(zhong)的粉塵(chen)(chen)(chen),它的凈(jing)(jing)化工(gong)作(zuo)(zuo)上(shang)要是依靠(kao)電(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)和(he)(he)沉(chen)淀兩個系統來完成的,當含(han)塵(chen)(chen)(chen)氣(qi)體(ti)(ti)進(jin)人(ren)(ren)氣(qi)刺叭時,含(han)塵(chen)(chen)(chen)氣(qi)體(ti)(ti)受到(dao)氣(qi)流分(fen)布(bu)板以及折(zhe)流板的調整后(hou),使(shi)(shi)氣(qi)流能較均勻地進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)場(chang)。在(zai)橫斷面(mian)擴大的作(zuo)(zuo)用(yong)下(xia),氣(qi)流速(su)(su)(su)度(du)迅速(su)(su)(su)降(jiang)低,其中(zhong)有些較重的塵(chen)(chen)(chen)粒(li)便失去(qu)速(su)(su)(su)度(du)而沉(chen)降(jiang)下(xia)來。進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)場(chang)的含(han)塵(chen)(chen)(chen)氣(qi)體(ti)(ti)由于電(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)通人(ren)(ren)高壓直流電(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)附近產生電(dian)(dian)(dian)(dian)暈(yun)(yun)現象(xiang),使(shi)(shi)氣(qi)體(ti)(ti)電(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)離(li)后(hou)的氣(qi)體(ti)(ti)中(zhong)存在(zai)大量(liang)的電(dian)(dian)(dian)(dian)子(zi)和(he)(he)離(li)子(zi),這(zhe)些電(dian)(dian)(dian)(dian)子(zi)和(he)(he)離(li)子(zi)與(yu)進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)場(chang)的粉塵(chen)(chen)(chen)結合起來,使(shi)(shi)塵(chen)(chen)(chen)粒(li)帶電(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)塵(chen)(chen)(chen)粒(li)在(zai)電(dian)(dian)(dian)(dian)場(chang)力的作(zuo)(zuo)用(yong)下(xia)趨向本設備(bei)陽(yang)極(ji)(ji)(正極(ji)(ji)、本設備(bei)采用(yong)負(fu)高壓制)和(he)(he)陰(yin)極(ji)(ji)(負(fu)極(ji)(ji)) , 釋(shi)放出電(dian)(dian)(dian)(dian)子(zi)分(fen)別沉(chen)積在(zai)相應的電(dian)(dian)(dian)(dian)極(ji)(ji)上(shang),通過設備(bei)陰(yin)陽(yang)極(ji)(ji)振(zhen)打(da)系統的振(zhen)打(da),使(shi)(shi)沉(chen)積在(zai)陰(yin)陽(yang)電(dian)(dian)(dian)(dian)極(ji)(ji)上(shang)的粉塵(chen)(chen)(chen)振(zhen)落,進(jin)人(ren)(ren)集灰斗 通過排灰裝(zhuang)置放出,回收(shou)有物料(liao),被(bei))凈(jing)(jing)化的氣(qi)體(ti)(ti)排入大氣(qi)。
工作原(yuan)理(li)
靜電(dian)(dian)(dian)(dian)(dian)(dian)(dian)除塵(chen)器(qi)的(de)工作(zuo)原理是(shi)(shi)利(li)用高(gao)壓電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場使(shi)煙氣(qi)(qi)(qi)(qi)發生(sheng)(sheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)離,氣(qi)(qi)(qi)(qi)流(liu)(liu)中的(de)粉塵(chen)荷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場作(zuo)用下(xia)與氣(qi)(qi)(qi)(qi)流(liu)(liu)分離。負極(ji)(ji)(ji)由(you)不(bu)同斷面形(xing)狀的(de)金屬導(dao)線(xian)制成,叫放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)。正極(ji)(ji)(ji)由(you)不(bu)同幾何形(xing)狀的(de)金屬板(ban)制成,叫集塵(chen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)。靜電(dian)(dian)(dian)(dian)(dian)(dian)(dian)除塵(chen)器(qi)的(de)性(xing)能(neng)受粉塵(chen)性(xing)質、設備構(gou)造和(he)煙氣(qi)(qi)(qi)(qi)流(liu)(liu)速等三(san)個因素的(de)影響。粉塵(chen)的(de)比(bi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻是(shi)(shi)評(ping)價導(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)性(xing)的(de)指標,它對除塵(chen)效(xiao)率(lv)有(you)直接的(de)影響。比(bi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻過低,塵(chen)粒難以保持在(zai)集塵(chen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上,致使(shi)其重(zhong)返氣(qi)(qi)(qi)(qi)流(liu)(liu)。比(bi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻過高(gao),到達集塵(chen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)的(de)塵(chen)粒電(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷不(bu)易放出,在(zai)塵(chen)層之(zhi)間(jian)形(xing)成電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓梯度會產(chan)生(sheng)(sheng)局部(bu)擊(ji)穿和(he)放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)現象(xiang)。這些情(qing)況(kuang)都會造成除塵(chen)效(xiao)率(lv)下(xia)降。
電(dian)(dian)(dian)除塵(chen)器的(de)(de)(de)基本原理(li)是(shi)利用電(dian)(dian)(dian)力捕(bu)集煙氣(qi)中的(de)(de)(de)粉(fen)塵(chen),主要包括以下四個(ge)相(xiang)互有關的(de)(de)(de)物理(li)過程: (1) 氣(qi)體(ti)的(de)(de)(de)電(dian)(dian)(dian)離。(2) 粉(fen)塵(chen)的(de)(de)(de)荷電(dian)(dian)(dian)。(3) 荷電(dian)(dian)(dian)粉(fen)塵(chen)向(xiang)電(dian)(dian)(dian)極移動。(4) 荷電(dian)(dian)(dian)粉(fen)塵(chen)的(de)(de)(de)捕(bu)集。