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)除塵(chen)(chen)(chen)器是以(yi)靜(jing)電(dian)凈(jing)化(hua)法來收捕(bu)廢氣(qi)(qi)(qi)(qi)(qi)中的(de)(de)(de)(de)(de)粉塵(chen)(chen)(chen),它的(de)(de)(de)(de)(de)凈(jing)化(hua)工作(zuo)(zuo)上(shang)(shang)(shang)要是依靠電(dian)暈(yun)極(ji)(ji)和(he)沉(chen)淀(dian)兩(liang)個系統來完成的(de)(de)(de)(de)(de),當(dang)含(han)(han)塵(chen)(chen)(chen)氣(qi)(qi)(qi)(qi)(qi)體(ti)(ti)(ti)進人(ren)(ren)氣(qi)(qi)(qi)(qi)(qi)刺(ci)叭時(shi),含(han)(han)塵(chen)(chen)(chen)氣(qi)(qi)(qi)(qi)(qi)體(ti)(ti)(ti)受(shou)到(dao)氣(qi)(qi)(qi)(qi)(qi)流(liu)分布(bu)板以(yi)及折流(liu)板的(de)(de)(de)(de)(de)調整后(hou),使氣(qi)(qi)(qi)(qi)(qi)流(liu)能(neng)較(jiao)均(jun)勻(yun)地進人(ren)(ren)電(dian)場(chang)(chang)。在(zai)橫斷面(mian)擴(kuo)大的(de)(de)(de)(de)(de)作(zuo)(zuo)用(yong)下(xia),氣(qi)(qi)(qi)(qi)(qi)流(liu)速度(du)迅速降(jiang)(jiang)低,其(qi)中有些較(jiao)重的(de)(de)(de)(de)(de)塵(chen)(chen)(chen)粒便失(shi)去速度(du)而沉(chen)降(jiang)(jiang)下(xia)來。進人(ren)(ren)電(dian)場(chang)(chang)的(de)(de)(de)(de)(de)含(han)(han)塵(chen)(chen)(chen)氣(qi)(qi)(qi)(qi)(qi)體(ti)(ti)(ti)由于電(dian)暈(yun)極(ji)(ji)通人(ren)(ren)高(gao)壓直流(liu)電(dian),則(ze)在(zai)電(dian)暈(yun)極(ji)(ji)附近產生電(dian)暈(yun)現象(xiang),使氣(qi)(qi)(qi)(qi)(qi)體(ti)(ti)(ti)電(dian)離,電(dian)離后(hou)的(de)(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)(qi)體(ti)(ti)(ti)中存在(zai)大量的(de)(de)(de)(de)(de)電(dian)子(zi)和(he)離子(zi),這些電(dian)子(zi)和(he)離子(zi)與進人(ren)(ren)電(dian)場(chang)(chang)的(de)(de)(de)(de)(de)粉塵(chen)(chen)(chen)結合起來,使塵(chen)(chen)(chen)粒帶(dai)電(dian),帶(dai)電(dian)塵(chen)(chen)(chen)粒在(zai)電(dian)場(chang)(chang)力(li)的(de)(de)(de)(de)(de)作(zuo)(zuo)用(yong)下(xia)趨向本(ben)設(she)備陽(yang)極(ji)(ji)(正極(ji)(ji)、本(ben)設(she)備采用(yong)負高(gao)壓制)和(he)陰(yin)極(ji)(ji)(負極(ji)(ji)) , 釋放(fang)出電(dian)子(zi)分別沉(chen)積在(zai)相應的(de)(de)(de)(de)(de)電(dian)極(ji)(ji)上(shang)(shang)(shang),通過設(she)備陰(yin)陽(yang)極(ji)(ji)振(zhen)打系統的(de)(de)(de)(de)(de)振(zhen)打,使沉(chen)積在(zai)陰(yin)陽(yang)電(dian)極(ji)(ji)上(shang)(shang)(shang)的(de)(de)(de)(de)(de)粉塵(chen)(chen)(chen)振(zhen)落,進人(ren)(ren)集(ji)灰斗(dou) 通過排灰裝(zhuang)置放(fang)出,回(hui)收有物(wu)料,被(bei))凈(jing)化(hua)的(de)(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)(qi)體(ti)(ti)(ti)排入大氣(qi)(qi)(qi)(qi)(qi)。
工作原(yuan)理(li)
靜電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器(qi)的(de)(de)(de)(de)工作原(yuan)理是利(li)用高壓電(dian)(dian)(dian)場使(shi)(shi)煙氣發生(sheng)電(dian)(dian)(dian)離,氣流中的(de)(de)(de)(de)粉(fen)塵(chen)(chen)(chen)荷(he)電(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)場作用下與氣流分離。負極(ji)由不同斷(duan)面形狀的(de)(de)(de)(de)金(jin)屬導線制(zhi)成(cheng),叫(jiao)放(fang)(fang)電(dian)(dian)(dian)電(dian)(dian)(dian)極(ji)。正(zheng)極(ji)由不同幾何形狀的(de)(de)(de)(de)金(jin)屬板制(zhi)成(cheng),叫(jiao)集塵(chen)(chen)(chen)電(dian)(dian)(dian)極(ji)。靜電(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)器(qi)的(de)(de)(de)(de)性(xing)能受粉(fen)塵(chen)(chen)(chen)性(xing)質、設備(bei)構造和(he)煙氣流速(su)等三(san)個因(yin)素的(de)(de)(de)(de)影響。粉(fen)塵(chen)(chen)(chen)的(de)(de)(de)(de)比(bi)電(dian)(dian)(dian)阻(zu)是評價導電(dian)(dian)(dian)性(xing)的(de)(de)(de)(de)指標,它對除(chu)塵(chen)(chen)(chen)效率(lv)(lv)有直(zhi)接的(de)(de)(de)(de)影響。比(bi)電(dian)(dian)(dian)阻(zu)過低(di),塵(chen)(chen)(chen)粒(li)難以保持在(zai)集塵(chen)(chen)(chen)電(dian)(dian)(dian)極(ji)上,致使(shi)(shi)其重返氣流。比(bi)電(dian)(dian)(dian)阻(zu)過高,到達(da)集塵(chen)(chen)(chen)電(dian)(dian)(dian)極(ji)的(de)(de)(de)(de)塵(chen)(chen)(chen)粒(li)電(dian)(dian)(dian)荷(he)不易(yi)放(fang)(fang)出,在(zai)塵(chen)(chen)(chen)層(ceng)之(zhi)間(jian)形成(cheng)電(dian)(dian)(dian)壓梯度會(hui)產生(sheng)局部擊穿和(he)放(fang)(fang)電(dian)(dian)(dian)現象。這些情況都會(hui)造成(cheng)除(chu)塵(chen)(chen)(chen)效率(lv)(lv)下降。
電(dian)除塵(chen)(chen)(chen)器的基本(ben)原理(li)是(shi)利用電(dian)力捕集煙氣中的粉塵(chen)(chen)(chen),主(zhu)要包括(kuo)以下(xia)四(si)個相(xiang)互有關(guan)的物理(li)過程(cheng): (1) 氣體的電(dian)離(li)。(2) 粉塵(chen)(chen)(chen)的荷(he)電(dian)。(3) 荷(he)電(dian)粉塵(chen)(chen)(chen)向(xiang)電(dian)極移動。(4) 荷(he)電(dian)粉塵(chen)(chen)(chen)的捕集。