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(shi)以靜電(dian)(dian)(dian)凈化(hua)法(fa)來(lai)收(shou)捕(bu)廢氣(qi)(qi)中的(de)(de)粉(fen)(fen)塵(chen)(chen),它的(de)(de)凈化(hua)工作(zuo)上(shang)要是(shi)依靠(kao)電(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)(ji)(ji)和沉(chen)(chen)淀兩(liang)個系統(tong)來(lai)完成的(de)(de),當含塵(chen)(chen)氣(qi)(qi)體進人(ren)氣(qi)(qi)刺叭時,含塵(chen)(chen)氣(qi)(qi)體受(shou)到氣(qi)(qi)流(liu)分(fen)布板(ban)以及(ji)折流(liu)板(ban)的(de)(de)調整后,使氣(qi)(qi)流(liu)能較均勻地(di)進人(ren)電(dian)(dian)(dian)場。在(zai)(zai)橫斷面擴大(da)(da)的(de)(de)作(zuo)用下(xia),氣(qi)(qi)流(liu)速度(du)迅速降低(di),其中有些(xie)(xie)較重的(de)(de)塵(chen)(chen)粒(li)便失去速度(du)而沉(chen)(chen)降下(xia)來(lai)。進人(ren)電(dian)(dian)(dian)場的(de)(de)含塵(chen)(chen)氣(qi)(qi)體由于電(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)(ji)(ji)通人(ren)高壓直流(liu)電(dian)(dian)(dian),則(ze)在(zai)(zai)電(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)(ji)(ji)附近產生電(dian)(dian)(dian)暈(yun)(yun)現象,使氣(qi)(qi)體電(dian)(dian)(dian)離,電(dian)(dian)(dian)離后的(de)(de)氣(qi)(qi)體中存在(zai)(zai)大(da)(da)量的(de)(de)電(dian)(dian)(dian)子(zi)和離子(zi),這些(xie)(xie)電(dian)(dian)(dian)子(zi)和離子(zi)與進人(ren)電(dian)(dian)(dian)場的(de)(de)粉(fen)(fen)塵(chen)(chen)結合(he)起來(lai),使塵(chen)(chen)粒(li)帶電(dian)(dian)(dian),帶電(dian)(dian)(dian)塵(chen)(chen)粒(li)在(zai)(zai)電(dian)(dian)(dian)場力(li)的(de)(de)作(zuo)用下(xia)趨向本設(she)備陽(yang)極(ji)(ji)(ji)(ji)(正極(ji)(ji)(ji)(ji)、本設(she)備采(cai)用負高壓制)和陰極(ji)(ji)(ji)(ji)(負極(ji)(ji)(ji)(ji)) , 釋放出電(dian)(dian)(dian)子(zi)分(fen)別沉(chen)(chen)積(ji)在(zai)(zai)相應(ying)的(de)(de)電(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上(shang),通過設(she)備陰陽(yang)極(ji)(ji)(ji)(ji)振(zhen)打(da)系統(tong)的(de)(de)振(zhen)打(da),使沉(chen)(chen)積(ji)在(zai)(zai)陰陽(yang)電(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上(shang)的(de)(de)粉(fen)(fen)塵(chen)(chen)振(zhen)落,進人(ren)集灰斗 通過排灰裝置放出,回收(shou)有物(wu)料(liao),被)凈化(hua)的(de)(de)氣(qi)(qi)體排入(ru)大(da)(da)氣(qi)(qi)。
工(gong)作原理(li)
靜電(dian)除塵(chen)(chen)(chen)器的工作(zuo)原理是利用高壓(ya)電(dian)場使煙(yan)氣(qi)發(fa)生電(dian)離(li),氣(qi)流(liu)中的粉(fen)塵(chen)(chen)(chen)荷電(dian)在電(dian)場作(zuo)用下與氣(qi)流(liu)分離(li)。負極(ji)由(you)不同斷(duan)面(mian)形(xing)狀的金屬導線制成(cheng),叫放電(dian)電(dian)極(ji)。正(zheng)極(ji)由(you)不同幾(ji)何(he)形(xing)狀的金屬板制成(cheng),叫集(ji)塵(chen)(chen)(chen)電(dian)極(ji)。靜電(dian)除塵(chen)(chen)(chen)器的性(xing)能受粉(fen)塵(chen)(chen)(chen)性(xing)質、設(she)備構造和煙(yan)氣(qi)流(liu)速等(deng)三個因素的影響。粉(fen)塵(chen)(chen)(chen)的比(bi)(bi)電(dian)阻(zu)是評價(jia)導電(dian)性(xing)的指(zhi)標,它對除塵(chen)(chen)(chen)效(xiao)率有直接的影響。比(bi)(bi)電(dian)阻(zu)過低,塵(chen)(chen)(chen)粒難(nan)以保持在集(ji)塵(chen)(chen)(chen)電(dian)極(ji)上,致使其重返(fan)氣(qi)流(liu)。比(bi)(bi)電(dian)阻(zu)過高,到達集(ji)塵(chen)(chen)(chen)電(dian)極(ji)的塵(chen)(chen)(chen)粒電(dian)荷不易放出,在塵(chen)(chen)(chen)層之間形(xing)成(cheng)電(dian)壓(ya)梯(ti)度會(hui)產生局部(bu)擊(ji)穿和放電(dian)現象(xiang)。這些情況都會(hui)造成(cheng)除塵(chen)(chen)(chen)效(xiao)率下降。
電(dian)除塵(chen)器的(de)(de)基本原理(li)是利用電(dian)力捕集(ji)煙(yan)氣中的(de)(de)粉(fen)(fen)(fen)塵(chen),主要包括(kuo)以下(xia)四個相互有關的(de)(de)物(wu)理(li)過程: (1) 氣體的(de)(de)電(dian)離。(2) 粉(fen)(fen)(fen)塵(chen)的(de)(de)荷(he)電(dian)。(3) 荷(he)電(dian)粉(fen)(fen)(fen)塵(chen)向(xiang)電(dian)極(ji)移動。(4) 荷(he)電(dian)粉(fen)(fen)(fen)塵(chen)的(de)(de)捕集(ji)。