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(chen)器是(shi)(shi)以(yi)(yi)靜電(dian)(dian)(dian)(dian)凈化法來(lai)(lai)收捕廢氣中的(de)(de)(de)粉(fen)(fen)塵(chen),它的(de)(de)(de)凈化工作(zuo)上要是(shi)(shi)依靠電(dian)(dian)(dian)(dian)暈極(ji)(ji)(ji)和(he)(he)沉淀(dian)兩(liang)個系統(tong)來(lai)(lai)完(wan)成的(de)(de)(de),當(dang)含塵(chen)氣體(ti)進(jin)人(ren)氣刺叭時,含塵(chen)氣體(ti)受到氣流(liu)分布板(ban)以(yi)(yi)及折流(liu)板(ban)的(de)(de)(de)調整后(hou)(hou),使(shi)氣流(liu)能較均勻地進(jin)人(ren)電(dian)(dian)(dian)(dian)場(chang)。在(zai)橫斷面擴大的(de)(de)(de)作(zuo)用(yong)下,氣流(liu)速度迅速降低,其中有些較重的(de)(de)(de)塵(chen)粒便失去速度而沉降下來(lai)(lai)。進(jin)人(ren)電(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)含塵(chen)氣體(ti)由(you)于(yu)電(dian)(dian)(dian)(dian)暈極(ji)(ji)(ji)通人(ren)高(gao)壓直流(liu)電(dian)(dian)(dian)(dian),則(ze)在(zai)電(dian)(dian)(dian)(dian)暈極(ji)(ji)(ji)附近(jin)產生電(dian)(dian)(dian)(dian)暈現象(xiang),使(shi)氣體(ti)電(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)離(li)后(hou)(hou)的(de)(de)(de)氣體(ti)中存在(zai)大量的(de)(de)(de)電(dian)(dian)(dian)(dian)子(zi)(zi)和(he)(he)離(li)子(zi)(zi),這些電(dian)(dian)(dian)(dian)子(zi)(zi)和(he)(he)離(li)子(zi)(zi)與進(jin)人(ren)電(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)粉(fen)(fen)塵(chen)結合起來(lai)(lai),使(shi)塵(chen)粒帶(dai)電(dian)(dian)(dian)(dian),帶(dai)電(dian)(dian)(dian)(dian)塵(chen)粒在(zai)電(dian)(dian)(dian)(dian)場(chang)力(li)的(de)(de)(de)作(zuo)用(yong)下趨向本設備陽極(ji)(ji)(ji)(正極(ji)(ji)(ji)、本設備采(cai)用(yong)負高(gao)壓制)和(he)(he)陰極(ji)(ji)(ji)(負極(ji)(ji)(ji)) , 釋(shi)放出電(dian)(dian)(dian)(dian)子(zi)(zi)分別沉積(ji)在(zai)相應(ying)的(de)(de)(de)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上,通過設備陰陽極(ji)(ji)(ji)振(zhen)打(da)(da)系統(tong)的(de)(de)(de)振(zhen)打(da)(da),使(shi)沉積(ji)在(zai)陰陽電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上的(de)(de)(de)粉(fen)(fen)塵(chen)振(zhen)落,進(jin)人(ren)集(ji)灰(hui)斗 通過排灰(hui)裝置放出,回收有物料(liao),被)凈化的(de)(de)(de)氣體(ti)排入(ru)大氣。
工作原理
靜電(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)(chen)(chen)器的(de)(de)工作原(yuan)理是(shi)利用高(gao)壓電(dian)(dian)(dian)(dian)場使(shi)煙(yan)氣(qi)(qi)(qi)發生電(dian)(dian)(dian)(dian)離,氣(qi)(qi)(qi)流中的(de)(de)粉(fen)塵(chen)(chen)(chen)(chen)(chen)荷電(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)場作用下(xia)與氣(qi)(qi)(qi)流分離。負極(ji)(ji)(ji)由(you)不(bu)同(tong)斷面(mian)形(xing)狀的(de)(de)金屬導線制成(cheng),叫放(fang)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)。正(zheng)極(ji)(ji)(ji)由(you)不(bu)同(tong)幾何(he)形(xing)狀的(de)(de)金屬板制成(cheng),叫集塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)。靜電(dian)(dian)(dian)(dian)除塵(chen)(chen)(chen)(chen)(chen)器的(de)(de)性能受粉(fen)塵(chen)(chen)(chen)(chen)(chen)性質、設備構(gou)造和煙(yan)氣(qi)(qi)(qi)流速等三個因素的(de)(de)影響。粉(fen)塵(chen)(chen)(chen)(chen)(chen)的(de)(de)比(bi)電(dian)(dian)(dian)(dian)阻是(shi)評價(jia)導電(dian)(dian)(dian)(dian)性的(de)(de)指標,它對除塵(chen)(chen)(chen)(chen)(chen)效率(lv)有(you)直接的(de)(de)影響。比(bi)電(dian)(dian)(dian)(dian)阻過(guo)低,塵(chen)(chen)(chen)(chen)(chen)粒(li)(li)難以保持在(zai)集塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上(shang),致(zhi)使(shi)其重返氣(qi)(qi)(qi)流。比(bi)電(dian)(dian)(dian)(dian)阻過(guo)高(gao),到達集塵(chen)(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)的(de)(de)塵(chen)(chen)(chen)(chen)(chen)粒(li)(li)電(dian)(dian)(dian)(dian)荷不(bu)易放(fang)出,在(zai)塵(chen)(chen)(chen)(chen)(chen)層(ceng)之間形(xing)成(cheng)電(dian)(dian)(dian)(dian)壓梯度(du)會產生局(ju)部(bu)擊穿(chuan)和放(fang)電(dian)(dian)(dian)(dian)現(xian)象。這些情(qing)況(kuang)都會造成(cheng)除塵(chen)(chen)(chen)(chen)(chen)效率(lv)下(xia)降。
電(dian)(dian)(dian)除塵(chen)(chen)器的(de)(de)基(ji)本原理是(shi)利用電(dian)(dian)(dian)力捕集(ji)煙氣中的(de)(de)粉(fen)塵(chen)(chen),主要包括(kuo)以(yi)下四個相(xiang)互有關的(de)(de)物理過程(cheng): (1) 氣體的(de)(de)電(dian)(dian)(dian)離(li)。(2) 粉(fen)塵(chen)(chen)的(de)(de)荷電(dian)(dian)(dian)。(3) 荷電(dian)(dian)(dian)粉(fen)塵(chen)(chen)向電(dian)(dian)(dian)極(ji)移動。(4) 荷電(dian)(dian)(dian)粉(fen)塵(chen)(chen)的(de)(de)捕集(ji)。