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(wo)式靜電(dian)(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)器是以(yi)靜電(dian)(dian)(dian)(dian)(dian)(dian)凈化法來(lai)收捕廢氣(qi)(qi)(qi)(qi)中(zhong)(zhong)的(de)(de)(de)粉塵(chen)(chen),它的(de)(de)(de)凈化工(gong)作上要(yao)是依靠(kao)電(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)和沉淀(dian)兩(liang)個系統來(lai)完(wan)成(cheng)的(de)(de)(de),當含(han)塵(chen)(chen)氣(qi)(qi)(qi)(qi)體進人(ren)氣(qi)(qi)(qi)(qi)刺叭時,含(han)塵(chen)(chen)氣(qi)(qi)(qi)(qi)體受(shou)到氣(qi)(qi)(qi)(qi)流(liu)分(fen)布板(ban)(ban)以(yi)及折流(liu)板(ban)(ban)的(de)(de)(de)調整后,使(shi)氣(qi)(qi)(qi)(qi)流(liu)能較均勻地進人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場。在橫斷面擴大的(de)(de)(de)作用(yong)下(xia),氣(qi)(qi)(qi)(qi)流(liu)速(su)度(du)迅速(su)降低,其中(zhong)(zhong)有些(xie)較重的(de)(de)(de)塵(chen)(chen)粒(li)便失去速(su)度(du)而沉降下(xia)來(lai)。進人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場的(de)(de)(de)含(han)塵(chen)(chen)氣(qi)(qi)(qi)(qi)體由于電(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)通人(ren)高壓直流(liu)電(dian)(dian)(dian)(dian)(dian)(dian),則在電(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)附近產生電(dian)(dian)(dian)(dian)(dian)(dian)暈現象,使(shi)氣(qi)(qi)(qi)(qi)體電(dian)(dian)(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)(dian)(dian)離后的(de)(de)(de)氣(qi)(qi)(qi)(qi)體中(zhong)(zhong)存在大量的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)子和離子,這些(xie)電(dian)(dian)(dian)(dian)(dian)(dian)子和離子與進人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場的(de)(de)(de)粉塵(chen)(chen)結合起來(lai),使(shi)塵(chen)(chen)粒(li)帶(dai)電(dian)(dian)(dian)(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)粒(li)在電(dian)(dian)(dian)(dian)(dian)(dian)場力的(de)(de)(de)作用(yong)下(xia)趨向本設備陽極(ji)(正極(ji)、本設備采用(yong)負高壓制)和陰(yin)極(ji)(負極(ji)) , 釋放出電(dian)(dian)(dian)(dian)(dian)(dian)子分(fen)別沉積(ji)(ji)在相應的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)上,通過設備陰(yin)陽極(ji)振打(da)系統的(de)(de)(de)振打(da),使(shi)沉積(ji)(ji)在陰(yin)陽電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)上的(de)(de)(de)粉塵(chen)(chen)振落,進人(ren)集(ji)灰(hui)斗(dou) 通過排灰(hui)裝置放出,回收有物(wu)料,被(bei))凈化的(de)(de)(de)氣(qi)(qi)(qi)(qi)體排入大氣(qi)(qi)(qi)(qi)。
工作原理
靜電(dian)(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)(chen)器的工作原(yuan)理是(shi)利用高壓電(dian)(dian)(dian)(dian)(dian)(dian)場使(shi)煙(yan)氣(qi)(qi)發生(sheng)電(dian)(dian)(dian)(dian)(dian)(dian)離,氣(qi)(qi)流中的粉塵(chen)(chen)(chen)(chen)荷(he)電(dian)(dian)(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)(dian)(dian)場作用下與氣(qi)(qi)流分(fen)離。負極(ji)(ji)(ji)由不(bu)同斷面形(xing)狀的金(jin)屬導線制(zhi)成(cheng),叫(jiao)放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)。正(zheng)極(ji)(ji)(ji)由不(bu)同幾何形(xing)狀的金(jin)屬板(ban)制(zhi)成(cheng),叫(jiao)集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)。靜電(dian)(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)(chen)器的性(xing)能受粉塵(chen)(chen)(chen)(chen)性(xing)質、設備構造和(he)煙(yan)氣(qi)(qi)流速(su)等三個因素的影響。粉塵(chen)(chen)(chen)(chen)的比電(dian)(dian)(dian)(dian)(dian)(dian)阻是(shi)評價導電(dian)(dian)(dian)(dian)(dian)(dian)性(xing)的指標,它對除塵(chen)(chen)(chen)(chen)效率(lv)有直接的影響。比電(dian)(dian)(dian)(dian)(dian)(dian)阻過低,塵(chen)(chen)(chen)(chen)粒(li)難(nan)以保持(chi)在集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上,致使(shi)其重返氣(qi)(qi)流。比電(dian)(dian)(dian)(dian)(dian)(dian)阻過高,到(dao)達集(ji)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)的塵(chen)(chen)(chen)(chen)粒(li)電(dian)(dian)(dian)(dian)(dian)(dian)荷(he)不(bu)易放(fang)出,在塵(chen)(chen)(chen)(chen)層(ceng)之間(jian)形(xing)成(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)壓梯度會(hui)產生(sheng)局部擊穿和(he)放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)現象。這些情況都會(hui)造成(cheng)除塵(chen)(chen)(chen)(chen)效率(lv)下降。
電(dian)(dian)除(chu)塵(chen)器的(de)基(ji)本原(yuan)理是(shi)利用電(dian)(dian)力捕集煙氣中的(de)粉(fen)(fen)塵(chen),主要包括以下四個(ge)相互有關的(de)物理過程: (1) 氣體的(de)電(dian)(dian)離。(2) 粉(fen)(fen)塵(chen)的(de)荷電(dian)(dian)。(3) 荷電(dian)(dian)粉(fen)(fen)塵(chen)向電(dian)(dian)極移動。(4) 荷電(dian)(dian)粉(fen)(fen)塵(chen)的(de)捕集。