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)除塵器(qi)是以靜電(dian)(dian)(dian)(dian)凈(jing)化(hua)法來(lai)(lai)收(shou)捕(bu)廢(fei)氣(qi)(qi)(qi)(qi)中的(de)(de)(de)(de)(de)粉塵,它的(de)(de)(de)(de)(de)凈(jing)化(hua)工作(zuo)(zuo)上(shang)要是依靠電(dian)(dian)(dian)(dian)暈極和(he)(he)沉淀(dian)兩個系(xi)統(tong)來(lai)(lai)完(wan)成(cheng)的(de)(de)(de)(de)(de),當含塵氣(qi)(qi)(qi)(qi)體進人(ren)氣(qi)(qi)(qi)(qi)刺叭(ba)時,含塵氣(qi)(qi)(qi)(qi)體受(shou)到氣(qi)(qi)(qi)(qi)流(liu)(liu)分布板(ban)以及折流(liu)(liu)板(ban)的(de)(de)(de)(de)(de)調整后,使氣(qi)(qi)(qi)(qi)流(liu)(liu)能較均勻(yun)地進人(ren)電(dian)(dian)(dian)(dian)場。在(zai)(zai)橫斷面擴大的(de)(de)(de)(de)(de)作(zuo)(zuo)用下,氣(qi)(qi)(qi)(qi)流(liu)(liu)速度(du)迅(xun)速降低(di),其(qi)中有些(xie)較重的(de)(de)(de)(de)(de)塵粒(li)便(bian)失去(qu)速度(du)而沉降下來(lai)(lai)。進人(ren)電(dian)(dian)(dian)(dian)場的(de)(de)(de)(de)(de)含塵氣(qi)(qi)(qi)(qi)體由于電(dian)(dian)(dian)(dian)暈極通人(ren)高壓直流(liu)(liu)電(dian)(dian)(dian)(dian),則在(zai)(zai)電(dian)(dian)(dian)(dian)暈極附近產生電(dian)(dian)(dian)(dian)暈現(xian)象,使氣(qi)(qi)(qi)(qi)體電(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)離后的(de)(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)體中存在(zai)(zai)大量的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)子(zi)(zi)和(he)(he)離子(zi)(zi),這(zhe)些(xie)電(dian)(dian)(dian)(dian)子(zi)(zi)和(he)(he)離子(zi)(zi)與進人(ren)電(dian)(dian)(dian)(dian)場的(de)(de)(de)(de)(de)粉塵結合起來(lai)(lai),使塵粒(li)帶電(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)塵粒(li)在(zai)(zai)電(dian)(dian)(dian)(dian)場力的(de)(de)(de)(de)(de)作(zuo)(zuo)用下趨(qu)向本設(she)備陽(yang)極(正極、本設(she)備采用負高壓制)和(he)(he)陰極(負極) , 釋放(fang)出電(dian)(dian)(dian)(dian)子(zi)(zi)分別沉積在(zai)(zai)相(xiang)應的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)極上(shang),通過設(she)備陰陽(yang)極振(zhen)打系(xi)統(tong)的(de)(de)(de)(de)(de)振(zhen)打,使沉積在(zai)(zai)陰陽(yang)電(dian)(dian)(dian)(dian)極上(shang)的(de)(de)(de)(de)(de)粉塵振(zhen)落(luo),進人(ren)集灰斗 通過排灰裝置放(fang)出,回(hui)收(shou)有物料,被)凈(jing)化(hua)的(de)(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)體排入大氣(qi)(qi)(qi)(qi)。
工作原理
靜(jing)電(dian)(dian)(dian)(dian)除(chu)塵器的(de)(de)(de)工作原理是(shi)(shi)利用(yong)高(gao)壓(ya)電(dian)(dian)(dian)(dian)場使煙(yan)氣(qi)(qi)發生電(dian)(dian)(dian)(dian)離(li),氣(qi)(qi)流(liu)中的(de)(de)(de)粉塵荷電(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)場作用(yong)下與氣(qi)(qi)流(liu)分離(li)。負極(ji)(ji)由(you)不(bu)同(tong)斷面(mian)形狀的(de)(de)(de)金(jin)屬導線制成,叫放(fang)(fang)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極(ji)(ji)。正極(ji)(ji)由(you)不(bu)同(tong)幾何形狀的(de)(de)(de)金(jin)屬板制成,叫集塵電(dian)(dian)(dian)(dian)極(ji)(ji)。靜(jing)電(dian)(dian)(dian)(dian)除(chu)塵器的(de)(de)(de)性(xing)能受(shou)粉塵性(xing)質(zhi)、設(she)備構(gou)造和(he)煙(yan)氣(qi)(qi)流(liu)速(su)等三個因素(su)的(de)(de)(de)影(ying)響。粉塵的(de)(de)(de)比(bi)電(dian)(dian)(dian)(dian)阻是(shi)(shi)評價導電(dian)(dian)(dian)(dian)性(xing)的(de)(de)(de)指標,它(ta)對除(chu)塵效(xiao)率有直接的(de)(de)(de)影(ying)響。比(bi)電(dian)(dian)(dian)(dian)阻過(guo)低,塵粒難(nan)以保持(chi)在集塵電(dian)(dian)(dian)(dian)極(ji)(ji)上,致(zhi)使其重(zhong)返氣(qi)(qi)流(liu)。比(bi)電(dian)(dian)(dian)(dian)阻過(guo)高(gao),到(dao)達集塵電(dian)(dian)(dian)(dian)極(ji)(ji)的(de)(de)(de)塵粒電(dian)(dian)(dian)(dian)荷不(bu)易放(fang)(fang)出(chu),在塵層之間形成電(dian)(dian)(dian)(dian)壓(ya)梯(ti)度(du)會(hui)產生局(ju)部擊穿和(he)放(fang)(fang)電(dian)(dian)(dian)(dian)現象。這(zhe)些情況都(dou)會(hui)造成除(chu)塵效(xiao)率下降。
電(dian)(dian)(dian)除塵(chen)器的(de)(de)基(ji)本原理(li)是利用電(dian)(dian)(dian)力捕(bu)集(ji)煙氣中的(de)(de)粉(fen)(fen)塵(chen),主要(yao)包(bao)括(kuo)以下四個相(xiang)互(hu)有關的(de)(de)物(wu)理(li)過程: (1) 氣體(ti)的(de)(de)電(dian)(dian)(dian)離。(2) 粉(fen)(fen)塵(chen)的(de)(de)荷電(dian)(dian)(dian)。(3) 荷電(dian)(dian)(dian)粉(fen)(fen)塵(chen)向電(dian)(dian)(dian)極移(yi)動。(4) 荷電(dian)(dian)(dian)粉(fen)(fen)塵(chen)的(de)(de)捕(bu)集(ji)。