XWD型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(shi)以靜(jing)電(dian)(dian)(dian)(dian)凈化法來(lai)收捕廢氣(qi)(qi)中的(de)(de)粉塵(chen)(chen)(chen)(chen)(chen)(chen),它的(de)(de)凈化工作(zuo)上(shang)要(yao)是(shi)依靠電(dian)(dian)(dian)(dian)暈極(ji)(ji)(ji)(ji)和沉淀(dian)兩個系統(tong)來(lai)完成的(de)(de),當(dang)含(han)塵(chen)(chen)(chen)(chen)(chen)(chen)氣(qi)(qi)體(ti)(ti)進(jin)人(ren)(ren)(ren)氣(qi)(qi)刺叭時,含(han)塵(chen)(chen)(chen)(chen)(chen)(chen)氣(qi)(qi)體(ti)(ti)受到(dao)氣(qi)(qi)流分布板(ban)以及折流板(ban)的(de)(de)調整后(hou),使(shi)(shi)氣(qi)(qi)流能較(jiao)均勻地進(jin)人(ren)(ren)(ren)電(dian)(dian)(dian)(dian)場。在(zai)(zai)橫斷面(mian)擴(kuo)大(da)的(de)(de)作(zuo)用下,氣(qi)(qi)流速(su)度迅速(su)降(jiang)低,其中有(you)些較(jiao)重的(de)(de)塵(chen)(chen)(chen)(chen)(chen)(chen)粒(li)(li)便失去速(su)度而沉降(jiang)下來(lai)。進(jin)人(ren)(ren)(ren)電(dian)(dian)(dian)(dian)場的(de)(de)含(han)塵(chen)(chen)(chen)(chen)(chen)(chen)氣(qi)(qi)體(ti)(ti)由于電(dian)(dian)(dian)(dian)暈極(ji)(ji)(ji)(ji)通人(ren)(ren)(ren)高壓直流電(dian)(dian)(dian)(dian),則(ze)在(zai)(zai)電(dian)(dian)(dian)(dian)暈極(ji)(ji)(ji)(ji)附近(jin)產生(sheng)電(dian)(dian)(dian)(dian)暈現象,使(shi)(shi)氣(qi)(qi)體(ti)(ti)電(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)離后(hou)的(de)(de)氣(qi)(qi)體(ti)(ti)中存在(zai)(zai)大(da)量(liang)的(de)(de)電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)和離子(zi)(zi)(zi),這些電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)和離子(zi)(zi)(zi)與進(jin)人(ren)(ren)(ren)電(dian)(dian)(dian)(dian)場的(de)(de)粉塵(chen)(chen)(chen)(chen)(chen)(chen)結合起來(lai),使(shi)(shi)塵(chen)(chen)(chen)(chen)(chen)(chen)粒(li)(li)帶電(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)塵(chen)(chen)(chen)(chen)(chen)(chen)粒(li)(li)在(zai)(zai)電(dian)(dian)(dian)(dian)場力的(de)(de)作(zuo)用下趨(qu)向本(ben)設備陽(yang)極(ji)(ji)(ji)(ji)(正極(ji)(ji)(ji)(ji)、本(ben)設備采用負(fu)高壓制)和陰極(ji)(ji)(ji)(ji)(負(fu)極(ji)(ji)(ji)(ji)) , 釋放出電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)分別(bie)沉積在(zai)(zai)相應的(de)(de)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上(shang),通過設備陰陽(yang)極(ji)(ji)(ji)(ji)振(zhen)打(da)系統(tong)的(de)(de)振(zhen)打(da),使(shi)(shi)沉積在(zai)(zai)陰陽(yang)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上(shang)的(de)(de)粉塵(chen)(chen)(chen)(chen)(chen)(chen)振(zhen)落,進(jin)人(ren)(ren)(ren)集灰斗 通過排灰裝(zhuang)置放出,回(hui)收有(you)物(wu)料(liao),被)凈化的(de)(de)氣(qi)(qi)體(ti)(ti)排入大(da)氣(qi)(qi)。
工(gong)作原(yuan)理
靜(jing)電(dian)除(chu)塵(chen)(chen)器的(de)(de)工作(zuo)原理是利用高(gao)壓電(dian)場(chang)使(shi)煙氣(qi)發(fa)生電(dian)離,氣(qi)流(liu)中(zhong)的(de)(de)粉塵(chen)(chen)荷電(dian)在(zai)電(dian)場(chang)作(zuo)用下(xia)與氣(qi)流(liu)分離。負極由不同斷面形狀的(de)(de)金屬(shu)導(dao)線制成(cheng)(cheng),叫放電(dian)電(dian)極。正極由不同幾何形狀的(de)(de)金屬(shu)板制成(cheng)(cheng),叫集(ji)塵(chen)(chen)電(dian)極。靜(jing)電(dian)除(chu)塵(chen)(chen)器的(de)(de)性能受粉塵(chen)(chen)性質、設(she)備構造和(he)煙氣(qi)流(liu)速等三個因素的(de)(de)影響(xiang)。粉塵(chen)(chen)的(de)(de)比(bi)電(dian)阻是評價導(dao)電(dian)性的(de)(de)指標,它對除(chu)塵(chen)(chen)效(xiao)率有直(zhi)接的(de)(de)影響(xiang)。比(bi)電(dian)阻過低,塵(chen)(chen)粒難以保持(chi)在(zai)集(ji)塵(chen)(chen)電(dian)極上(shang),致使(shi)其重返氣(qi)流(liu)。比(bi)電(dian)阻過高(gao),到達集(ji)塵(chen)(chen)電(dian)極的(de)(de)塵(chen)(chen)粒電(dian)荷不易放出,在(zai)塵(chen)(chen)層(ceng)之間(jian)形成(cheng)(cheng)電(dian)壓梯(ti)度(du)會(hui)產生局部擊穿和(he)放電(dian)現(xian)象。這些(xie)情況都會(hui)造成(cheng)(cheng)除(chu)塵(chen)(chen)效(xiao)率下(xia)降。
電(dian)(dian)(dian)(dian)除塵(chen)器的(de)(de)基本(ben)原理是利(li)用電(dian)(dian)(dian)(dian)力捕(bu)集煙(yan)氣中的(de)(de)粉(fen)塵(chen),主要包括以下四個(ge)相互有關的(de)(de)物理過程: (1) 氣體的(de)(de)電(dian)(dian)(dian)(dian)離。(2) 粉(fen)塵(chen)的(de)(de)荷電(dian)(dian)(dian)(dian)。(3) 荷電(dian)(dian)(dian)(dian)粉(fen)塵(chen)向電(dian)(dian)(dian)(dian)極移動(dong)。(4) 荷電(dian)(dian)(dian)(dian)粉(fen)塵(chen)的(de)(de)捕(bu)集。