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)(dian)(dian)(dian)除塵(chen)(chen)(chen)器是以靜電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)凈(jing)化法來(lai)收捕廢氣(qi)(qi)(qi)中的(de)(de)(de)粉塵(chen)(chen)(chen),它的(de)(de)(de)凈(jing)化工(gong)作(zuo)上(shang)要(yao)是依靠(kao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)(ji)和沉淀(dian)兩個系統來(lai)完成的(de)(de)(de),當含塵(chen)(chen)(chen)氣(qi)(qi)(qi)體進(jin)人(ren)氣(qi)(qi)(qi)刺叭時,含塵(chen)(chen)(chen)氣(qi)(qi)(qi)體受(shou)到(dao)氣(qi)(qi)(qi)流(liu)分布板(ban)以及(ji)折流(liu)板(ban)的(de)(de)(de)調整后,使(shi)氣(qi)(qi)(qi)流(liu)能較(jiao)均勻地進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場。在(zai)(zai)(zai)(zai)橫斷(duan)面(mian)擴大(da)的(de)(de)(de)作(zuo)用(yong)下(xia),氣(qi)(qi)(qi)流(liu)速(su)度(du)迅速(su)降(jiang)低,其(qi)中有些較(jiao)重的(de)(de)(de)塵(chen)(chen)(chen)粒(li)便失去速(su)度(du)而沉降(jiang)下(xia)來(lai)。進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場的(de)(de)(de)含塵(chen)(chen)(chen)氣(qi)(qi)(qi)體由于電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)(ji)通(tong)(tong)人(ren)高壓直流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian),則在(zai)(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)極(ji)(ji)(ji)附近產(chan)生電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)(yun)現(xian)象,使(shi)氣(qi)(qi)(qi)體電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)離,電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)離后的(de)(de)(de)氣(qi)(qi)(qi)體中存在(zai)(zai)(zai)(zai)大(da)量(liang)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)(zi)和離子(zi)(zi)(zi),這(zhe)些電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)(zi)和離子(zi)(zi)(zi)與進(jin)人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場的(de)(de)(de)粉塵(chen)(chen)(chen)結合起來(lai),使(shi)塵(chen)(chen)(chen)粒(li)帶電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)(chen)粒(li)在(zai)(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場力(li)的(de)(de)(de)作(zuo)用(yong)下(xia)趨向本設(she)備陽(yang)極(ji)(ji)(ji)(正極(ji)(ji)(ji)、本設(she)備采用(yong)負(fu)高壓制)和陰極(ji)(ji)(ji)(負(fu)極(ji)(ji)(ji)) , 釋放出電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)(zi)分別沉積(ji)在(zai)(zai)(zai)(zai)相應(ying)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上(shang),通(tong)(tong)過(guo)(guo)設(she)備陰陽(yang)極(ji)(ji)(ji)振打(da)系統的(de)(de)(de)振打(da),使(shi)沉積(ji)在(zai)(zai)(zai)(zai)陰陽(yang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上(shang)的(de)(de)(de)粉塵(chen)(chen)(chen)振落,進(jin)人(ren)集灰斗 通(tong)(tong)過(guo)(guo)排(pai)灰裝置放出,回收有物料,被)凈(jing)化的(de)(de)(de)氣(qi)(qi)(qi)體排(pai)入大(da)氣(qi)(qi)(qi)。
工作原理
靜電(dian)(dian)(dian)(dian)除塵(chen)(chen)器的(de)工作原(yuan)理是(shi)利用(yong)高(gao)壓電(dian)(dian)(dian)(dian)場使(shi)煙(yan)氣發生電(dian)(dian)(dian)(dian)離,氣流中的(de)粉塵(chen)(chen)荷(he)電(dian)(dian)(dian)(dian)在(zai)(zai)電(dian)(dian)(dian)(dian)場作用(yong)下(xia)與氣流分離。負(fu)極(ji)由(you)不(bu)同斷(duan)面形(xing)狀的(de)金屬(shu)(shu)導線制(zhi)成(cheng)(cheng),叫放電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極(ji)。正極(ji)由(you)不(bu)同幾何形(xing)狀的(de)金屬(shu)(shu)板制(zhi)成(cheng)(cheng),叫集(ji)塵(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)。靜電(dian)(dian)(dian)(dian)除塵(chen)(chen)器的(de)性能受粉塵(chen)(chen)性質、設備構造(zao)和(he)煙(yan)氣流速等(deng)三個因素的(de)影響。粉塵(chen)(chen)的(de)比電(dian)(dian)(dian)(dian)阻是(shi)評(ping)價(jia)導電(dian)(dian)(dian)(dian)性的(de)指標,它對除塵(chen)(chen)效率有直接的(de)影響。比電(dian)(dian)(dian)(dian)阻過低,塵(chen)(chen)粒難以保持在(zai)(zai)集(ji)塵(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)上,致使(shi)其重返氣流。比電(dian)(dian)(dian)(dian)阻過高(gao),到(dao)達(da)集(ji)塵(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)的(de)塵(chen)(chen)粒電(dian)(dian)(dian)(dian)荷(he)不(bu)易放出,在(zai)(zai)塵(chen)(chen)層(ceng)之間形(xing)成(cheng)(cheng)電(dian)(dian)(dian)(dian)壓梯度會(hui)產生局部擊穿(chuan)和(he)放電(dian)(dian)(dian)(dian)現象。這(zhe)些情況都會(hui)造(zao)成(cheng)(cheng)除塵(chen)(chen)效率下(xia)降。
電(dian)(dian)除(chu)塵器的基本(ben)原(yuan)理是利用電(dian)(dian)力捕集煙氣中的粉(fen)塵,主(zhu)要(yao)包括以下(xia)四個(ge)相互有關的物理過程: (1) 氣體(ti)的電(dian)(dian)離。(2) 粉(fen)塵的荷(he)電(dian)(dian)。(3) 荷(he)電(dian)(dian)粉(fen)塵向電(dian)(dian)極(ji)移動(dong)。(4) 荷(he)電(dian)(dian)粉(fen)塵的捕集。