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(wo)式靜(jing)電(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)器是以靜(jing)電(dian)(dian)(dian)(dian)(dian)凈(jing)化法(fa)來收捕廢氣(qi)(qi)(qi)中的(de)(de)(de)粉(fen)(fen)塵(chen)(chen),它的(de)(de)(de)凈(jing)化工作上(shang)要是依靠電(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)和(he)沉(chen)淀兩個系(xi)統(tong)來完成的(de)(de)(de),當含塵(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)進(jin)(jin)(jin)人(ren)(ren)氣(qi)(qi)(qi)刺(ci)叭時,含塵(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)受(shou)到氣(qi)(qi)(qi)流分(fen)布板(ban)以及折流板(ban)的(de)(de)(de)調整后,使(shi)(shi)氣(qi)(qi)(qi)流能較均勻地(di)進(jin)(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)。在(zai)橫斷面擴大的(de)(de)(de)作用(yong)(yong)下(xia),氣(qi)(qi)(qi)流速(su)度(du)迅速(su)降低,其中有些較重(zhong)的(de)(de)(de)塵(chen)(chen)粒便失(shi)去速(su)度(du)而沉(chen)降下(xia)來。進(jin)(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)含塵(chen)(chen)氣(qi)(qi)(qi)體(ti)(ti)由于(yu)電(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)通(tong)人(ren)(ren)高壓直(zhi)流電(dian)(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)附近產生(sheng)電(dian)(dian)(dian)(dian)(dian)暈(yun)現(xian)象,使(shi)(shi)氣(qi)(qi)(qi)體(ti)(ti)電(dian)(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)(dian)離(li)后的(de)(de)(de)氣(qi)(qi)(qi)體(ti)(ti)中存在(zai)大量的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)子(zi)和(he)離(li)子(zi),這些電(dian)(dian)(dian)(dian)(dian)子(zi)和(he)離(li)子(zi)與進(jin)(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)粉(fen)(fen)塵(chen)(chen)結(jie)合起(qi)來,使(shi)(shi)塵(chen)(chen)粒帶電(dian)(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)粒在(zai)電(dian)(dian)(dian)(dian)(dian)場(chang)力的(de)(de)(de)作用(yong)(yong)下(xia)趨向(xiang)本設(she)備陽(yang)極(ji)(ji)(正極(ji)(ji)、本設(she)備采用(yong)(yong)負高壓制)和(he)陰極(ji)(ji)(負極(ji)(ji)) , 釋放出(chu)電(dian)(dian)(dian)(dian)(dian)子(zi)分(fen)別沉(chen)積在(zai)相(xiang)應(ying)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上(shang),通(tong)過(guo)設(she)備陰陽(yang)極(ji)(ji)振打(da)系(xi)統(tong)的(de)(de)(de)振打(da),使(shi)(shi)沉(chen)積在(zai)陰陽(yang)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上(shang)的(de)(de)(de)粉(fen)(fen)塵(chen)(chen)振落,進(jin)(jin)(jin)人(ren)(ren)集灰斗 通(tong)過(guo)排灰裝(zhuang)置(zhi)放出(chu),回收有物料,被)凈(jing)化的(de)(de)(de)氣(qi)(qi)(qi)體(ti)(ti)排入大氣(qi)(qi)(qi)。
工作原理(li)
靜電(dian)除(chu)(chu)(chu)塵(chen)(chen)器的(de)(de)(de)工作原理(li)是利(li)用(yong)高壓電(dian)場(chang)使煙氣(qi)發生電(dian)離(li),氣(qi)流(liu)中的(de)(de)(de)粉塵(chen)(chen)荷(he)電(dian)在電(dian)場(chang)作用(yong)下(xia)與氣(qi)流(liu)分離(li)。負極(ji)由(you)(you)不同(tong)斷(duan)面形(xing)狀(zhuang)的(de)(de)(de)金屬導(dao)線制成(cheng)(cheng)(cheng),叫(jiao)(jiao)放電(dian)電(dian)極(ji)。正極(ji)由(you)(you)不同(tong)幾(ji)何形(xing)狀(zhuang)的(de)(de)(de)金屬板(ban)制成(cheng)(cheng)(cheng),叫(jiao)(jiao)集(ji)塵(chen)(chen)電(dian)極(ji)。靜電(dian)除(chu)(chu)(chu)塵(chen)(chen)器的(de)(de)(de)性能受(shou)粉塵(chen)(chen)性質、設(she)備(bei)構(gou)造(zao)和(he)煙氣(qi)流(liu)速等三(san)個因(yin)素的(de)(de)(de)影響(xiang)(xiang)。粉塵(chen)(chen)的(de)(de)(de)比(bi)電(dian)阻是評(ping)價導(dao)電(dian)性的(de)(de)(de)指標,它對(dui)除(chu)(chu)(chu)塵(chen)(chen)效率有(you)直接的(de)(de)(de)影響(xiang)(xiang)。比(bi)電(dian)阻過(guo)低,塵(chen)(chen)粒難以保(bao)持在集(ji)塵(chen)(chen)電(dian)極(ji)上(shang),致使其重返氣(qi)流(liu)。比(bi)電(dian)阻過(guo)高,到達(da)集(ji)塵(chen)(chen)電(dian)極(ji)的(de)(de)(de)塵(chen)(chen)粒電(dian)荷(he)不易放出(chu),在塵(chen)(chen)層之間形(xing)成(cheng)(cheng)(cheng)電(dian)壓梯度會(hui)產生局(ju)部擊穿和(he)放電(dian)現(xian)象(xiang)。這些情(qing)況都會(hui)造(zao)成(cheng)(cheng)(cheng)除(chu)(chu)(chu)塵(chen)(chen)效率下(xia)降。
電(dian)除(chu)塵器的(de)基本原理(li)是(shi)利用(yong)電(dian)力捕集煙(yan)氣中的(de)粉(fen)塵,主要包括以下四個相(xiang)互有關的(de)物理(li)過程: (1) 氣體(ti)的(de)電(dian)離。(2) 粉(fen)塵的(de)荷(he)電(dian)。(3) 荷(he)電(dian)粉(fen)塵向電(dian)極移動。(4) 荷(he)電(dian)粉(fen)塵的(de)捕集。