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)(jing)電(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)(chen)器是(shi)以靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)凈(jing)化法來(lai)(lai)收捕廢氣(qi)(qi)中(zhong)的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen),它的(de)(de)(de)凈(jing)化工作(zuo)上(shang)要是(shi)依(yi)靠(kao)電(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)和(he)(he)(he)沉淀兩個系(xi)統來(lai)(lai)完成的(de)(de)(de),當含(han)(han)塵(chen)(chen)(chen)(chen)氣(qi)(qi)體(ti)進(jin)人(ren)(ren)氣(qi)(qi)刺叭時(shi),含(han)(han)塵(chen)(chen)(chen)(chen)氣(qi)(qi)體(ti)受到(dao)氣(qi)(qi)流(liu)分(fen)布(bu)板(ban)(ban)以及(ji)折流(liu)板(ban)(ban)的(de)(de)(de)調整后,使氣(qi)(qi)流(liu)能較(jiao)均勻地進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)。在(zai)(zai)(zai)橫斷面擴大(da)的(de)(de)(de)作(zuo)用(yong)下(xia),氣(qi)(qi)流(liu)速(su)(su)度迅速(su)(su)降(jiang)低,其中(zhong)有(you)些(xie)較(jiao)重(zhong)的(de)(de)(de)塵(chen)(chen)(chen)(chen)粒便失去速(su)(su)度而沉降(jiang)下(xia)來(lai)(lai)。進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)含(han)(han)塵(chen)(chen)(chen)(chen)氣(qi)(qi)體(ti)由于(yu)電(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)通人(ren)(ren)高(gao)(gao)壓直流(liu)電(dian)(dian)(dian)(dian)(dian),則在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)附近產生(sheng)電(dian)(dian)(dian)(dian)(dian)暈(yun)現象,使氣(qi)(qi)體(ti)電(dian)(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)(dian)離后的(de)(de)(de)氣(qi)(qi)體(ti)中(zhong)存在(zai)(zai)(zai)大(da)量(liang)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)和(he)(he)(he)離子(zi)(zi),這些(xie)電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)和(he)(he)(he)離子(zi)(zi)與進(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)結(jie)合(he)起(qi)來(lai)(lai),使塵(chen)(chen)(chen)(chen)粒帶電(dian)(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)(chen)(chen)粒在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)場(chang)力的(de)(de)(de)作(zuo)用(yong)下(xia)趨向本(ben)設(she)備(bei)陽極(ji)(ji)(ji)(正極(ji)(ji)(ji)、本(ben)設(she)備(bei)采(cai)用(yong)負高(gao)(gao)壓制)和(he)(he)(he)陰極(ji)(ji)(ji)(負極(ji)(ji)(ji)) , 釋(shi)放出電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)分(fen)別沉積在(zai)(zai)(zai)相應的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上(shang),通過設(she)備(bei)陰陽極(ji)(ji)(ji)振打系(xi)統的(de)(de)(de)振打,使沉積在(zai)(zai)(zai)陰陽電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上(shang)的(de)(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)振落,進(jin)人(ren)(ren)集灰斗 通過排(pai)灰裝置(zhi)放出,回收有(you)物料(liao),被(bei))凈(jing)化的(de)(de)(de)氣(qi)(qi)體(ti)排(pai)入大(da)氣(qi)(qi)。
工(gong)作原理
靜(jing)電(dian)(dian)(dian)(dian)(dian)除塵(chen)器的(de)工作原(yuan)理是利用高壓電(dian)(dian)(dian)(dian)(dian)場(chang)使煙氣(qi)發生(sheng)電(dian)(dian)(dian)(dian)(dian)離,氣(qi)流(liu)(liu)中(zhong)的(de)粉塵(chen)荷(he)電(dian)(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)(dian)場(chang)作用下與氣(qi)流(liu)(liu)分離。負極(ji)由(you)不同斷面形狀的(de)金(jin)屬導線制成(cheng)(cheng),叫放電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)極(ji)。正極(ji)由(you)不同幾何形狀的(de)金(jin)屬板制成(cheng)(cheng),叫集塵(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)。靜(jing)電(dian)(dian)(dian)(dian)(dian)除塵(chen)器的(de)性(xing)能受粉塵(chen)性(xing)質、設備構(gou)造(zao)和煙氣(qi)流(liu)(liu)速等(deng)三個因(yin)素的(de)影響。粉塵(chen)的(de)比(bi)電(dian)(dian)(dian)(dian)(dian)阻是評(ping)價(jia)導電(dian)(dian)(dian)(dian)(dian)性(xing)的(de)指標,它對除塵(chen)效(xiao)率有(you)直接的(de)影響。比(bi)電(dian)(dian)(dian)(dian)(dian)阻過低,塵(chen)粒難(nan)以保持在(zai)集塵(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)上,致使其重返氣(qi)流(liu)(liu)。比(bi)電(dian)(dian)(dian)(dian)(dian)阻過高,到(dao)達集塵(chen)電(dian)(dian)(dian)(dian)(dian)極(ji)的(de)塵(chen)粒電(dian)(dian)(dian)(dian)(dian)荷(he)不易放出,在(zai)塵(chen)層之間形成(cheng)(cheng)電(dian)(dian)(dian)(dian)(dian)壓梯度會產生(sheng)局(ju)部擊穿(chuan)和放電(dian)(dian)(dian)(dian)(dian)現象(xiang)。這些(xie)情況都會造(zao)成(cheng)(cheng)除塵(chen)效(xiao)率下降。
電(dian)(dian)(dian)除塵(chen)(chen)器的(de)基本原理是利用電(dian)(dian)(dian)力捕集煙氣(qi)中的(de)粉(fen)塵(chen)(chen),主要包括以下四個相互有關的(de)物理過程: (1) 氣(qi)體的(de)電(dian)(dian)(dian)離。(2) 粉(fen)塵(chen)(chen)的(de)荷(he)電(dian)(dian)(dian)。(3) 荷(he)電(dian)(dian)(dian)粉(fen)塵(chen)(chen)向電(dian)(dian)(dian)極(ji)移動。(4) 荷(he)電(dian)(dian)(dian)粉(fen)塵(chen)(chen)的(de)捕集。