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。
臥式靜電(dian)(dian)(dian)(dian)(dian)除塵(chen)器是以靜電(dian)(dian)(dian)(dian)(dian)凈(jing)化(hua)法來收捕廢氣(qi)中的(de)(de)(de)粉(fen)(fen)塵(chen),它的(de)(de)(de)凈(jing)化(hua)工作(zuo)上(shang)要是依(yi)靠電(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)和(he)(he)沉淀兩個系統(tong)來完成的(de)(de)(de),當含(han)塵(chen)氣(qi)體(ti)(ti)進人(ren)(ren)(ren)(ren)氣(qi)刺叭時(shi),含(han)塵(chen)氣(qi)體(ti)(ti)受到氣(qi)流分布板(ban)以及折流板(ban)的(de)(de)(de)調整后,使氣(qi)流能較均勻(yun)地進人(ren)(ren)(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場。在(zai)橫斷(duan)面擴(kuo)大的(de)(de)(de)作(zuo)用下,氣(qi)流速(su)度(du)(du)迅速(su)降(jiang)低,其中有(you)些(xie)較重的(de)(de)(de)塵(chen)粒(li)便(bian)失去速(su)度(du)(du)而沉降(jiang)下來。進人(ren)(ren)(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場的(de)(de)(de)含(han)塵(chen)氣(qi)體(ti)(ti)由于電(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)通人(ren)(ren)(ren)(ren)高壓直流電(dian)(dian)(dian)(dian)(dian),則(ze)在(zai)電(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)附近產生電(dian)(dian)(dian)(dian)(dian)暈(yun)現象,使氣(qi)體(ti)(ti)電(dian)(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)(dian)離后的(de)(de)(de)氣(qi)體(ti)(ti)中存在(zai)大量的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)子(zi)和(he)(he)離子(zi),這些(xie)電(dian)(dian)(dian)(dian)(dian)子(zi)和(he)(he)離子(zi)與(yu)進人(ren)(ren)(ren)(ren)電(dian)(dian)(dian)(dian)(dian)場的(de)(de)(de)粉(fen)(fen)塵(chen)結合起來,使塵(chen)粒(li)帶電(dian)(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)(dian)塵(chen)粒(li)在(zai)電(dian)(dian)(dian)(dian)(dian)場力的(de)(de)(de)作(zuo)用下趨向(xiang)本(ben)設(she)備陽(yang)極(ji)(正極(ji)、本(ben)設(she)備采(cai)用負高壓制)和(he)(he)陰(yin)(yin)極(ji)(負極(ji)) , 釋放出(chu)電(dian)(dian)(dian)(dian)(dian)子(zi)分別沉積在(zai)相應的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)極(ji)上(shang),通過設(she)備陰(yin)(yin)陽(yang)極(ji)振(zhen)打(da)系統(tong)的(de)(de)(de)振(zhen)打(da),使沉積在(zai)陰(yin)(yin)陽(yang)電(dian)(dian)(dian)(dian)(dian)極(ji)上(shang)的(de)(de)(de)粉(fen)(fen)塵(chen)振(zhen)落,進人(ren)(ren)(ren)(ren)集灰斗 通過排灰裝(zhuang)置(zhi)放出(chu),回收有(you)物(wu)料(liao),被)凈(jing)化(hua)的(de)(de)(de)氣(qi)體(ti)(ti)排入大氣(qi)。
工作原(yuan)理
靜電(dian)(dian)(dian)除塵(chen)(chen)(chen)(chen)(chen)器的(de)(de)(de)(de)工作(zuo)原理是利用高壓電(dian)(dian)(dian)場使煙氣(qi)發生電(dian)(dian)(dian)離,氣(qi)流中的(de)(de)(de)(de)粉塵(chen)(chen)(chen)(chen)(chen)荷電(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)場作(zuo)用下(xia)與氣(qi)流分離。負(fu)極(ji)由(you)不同(tong)斷面(mian)形(xing)狀的(de)(de)(de)(de)金屬導線制成,叫放(fang)電(dian)(dian)(dian)電(dian)(dian)(dian)極(ji)。正極(ji)由(you)不同(tong)幾何形(xing)狀的(de)(de)(de)(de)金屬板制成,叫集(ji)塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)極(ji)。靜電(dian)(dian)(dian)除塵(chen)(chen)(chen)(chen)(chen)器的(de)(de)(de)(de)性(xing)能受(shou)粉塵(chen)(chen)(chen)(chen)(chen)性(xing)質、設(she)備(bei)構造和(he)煙氣(qi)流速等(deng)三(san)個因素的(de)(de)(de)(de)影響。粉塵(chen)(chen)(chen)(chen)(chen)的(de)(de)(de)(de)比(bi)電(dian)(dian)(dian)阻(zu)(zu)(zu)是評(ping)價導電(dian)(dian)(dian)性(xing)的(de)(de)(de)(de)指標,它對除塵(chen)(chen)(chen)(chen)(chen)效(xiao)率有直接(jie)的(de)(de)(de)(de)影響。比(bi)電(dian)(dian)(dian)阻(zu)(zu)(zu)過低,塵(chen)(chen)(chen)(chen)(chen)粒難以保(bao)持在(zai)集(ji)塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)極(ji)上,致使其重返(fan)氣(qi)流。比(bi)電(dian)(dian)(dian)阻(zu)(zu)(zu)過高,到達集(ji)塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)極(ji)的(de)(de)(de)(de)塵(chen)(chen)(chen)(chen)(chen)粒電(dian)(dian)(dian)荷不易放(fang)出,在(zai)塵(chen)(chen)(chen)(chen)(chen)層(ceng)之間形(xing)成電(dian)(dian)(dian)壓梯度會產生局部擊穿(chuan)和(he)放(fang)電(dian)(dian)(dian)現象。這些情況都會造成除塵(chen)(chen)(chen)(chen)(chen)效(xiao)率下(xia)降(jiang)。
電(dian)除(chu)塵(chen)(chen)器的(de)基本原理是(shi)利用(yong)電(dian)力捕集煙氣(qi)中的(de)粉(fen)塵(chen)(chen),主(zhu)要(yao)包括以下四個相互有關的(de)物理過(guo)程: (1) 氣(qi)體的(de)電(dian)離(li)。(2) 粉(fen)塵(chen)(chen)的(de)荷(he)電(dian)。(3) 荷(he)電(dian)粉(fen)塵(chen)(chen)向(xiang)電(dian)極移動。(4) 荷(he)電(dian)粉(fen)塵(chen)(chen)的(de)捕集。