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(shi)靜電(dian)(dian)(dian)(dian)(dian)(dian)除塵(chen)(chen)器是(shi)以靜電(dian)(dian)(dian)(dian)(dian)(dian)凈(jing)(jing)化法來收(shou)捕廢氣(qi)(qi)(qi)(qi)(qi)中的(de)(de)(de)(de)(de)粉塵(chen)(chen),它的(de)(de)(de)(de)(de)凈(jing)(jing)化工作上(shang)要(yao)是(shi)依靠電(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)(ji)和沉淀(dian)兩個系統(tong)來完成的(de)(de)(de)(de)(de),當含塵(chen)(chen)氣(qi)(qi)(qi)(qi)(qi)體(ti)進(jin)(jin)人(ren)(ren)氣(qi)(qi)(qi)(qi)(qi)刺叭時,含塵(chen)(chen)氣(qi)(qi)(qi)(qi)(qi)體(ti)受到(dao)氣(qi)(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(zheng)后,使(shi)氣(qi)(qi)(qi)(qi)(qi)流(liu)(liu)能較均(jun)勻(yun)地進(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場。在(zai)橫斷面擴大的(de)(de)(de)(de)(de)作用下(xia),氣(qi)(qi)(qi)(qi)(qi)流(liu)(liu)速度迅(xun)速降低,其中有些(xie)較重的(de)(de)(de)(de)(de)塵(chen)(chen)粒便(bian)失(shi)去速度而沉降下(xia)來。進(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場的(de)(de)(de)(de)(de)含塵(chen)(chen)氣(qi)(qi)(qi)(qi)(qi)體(ti)由(you)于電(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)(ji)通(tong)人(ren)(ren)高壓直流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian),則在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)(ji)附近產生(sheng)電(dian)(dian)(dian)(dian)(dian)(dian)暈(yun)現象(xiang),使(shi)氣(qi)(qi)(qi)(qi)(qi)體(ti)電(dian)(dian)(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)(dian)(dian)離(li)后的(de)(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)(qi)體(ti)中存在(zai)大量(liang)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)和離(li)子(zi)(zi),這些(xie)電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)和離(li)子(zi)(zi)與(yu)進(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)(dian)(dian)場的(de)(de)(de)(de)(de)粉塵(chen)(chen)結合起來,使(shi)塵(chen)(chen)粒帶電(dian)(dian)(dian)(dian)(dian)(dian),帶電(dian)(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)粒在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)場力的(de)(de)(de)(de)(de)作用下(xia)趨向本設(she)備(bei)陽極(ji)(ji)(ji)(ji)(正(zheng)極(ji)(ji)(ji)(ji)、本設(she)備(bei)采用負高壓制)和陰(yin)極(ji)(ji)(ji)(ji)(負極(ji)(ji)(ji)(ji)) , 釋(shi)放(fang)出電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)分別(bie)沉積在(zai)相應的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上(shang),通(tong)過設(she)備(bei)陰(yin)陽極(ji)(ji)(ji)(ji)振打系統(tong)的(de)(de)(de)(de)(de)振打,使(shi)沉積在(zai)陰(yin)陽電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)上(shang)的(de)(de)(de)(de)(de)粉塵(chen)(chen)振落,進(jin)(jin)人(ren)(ren)集(ji)灰斗 通(tong)過排(pai)(pai)灰裝(zhuang)置放(fang)出,回收(shou)有物料,被)凈(jing)(jing)化的(de)(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)(qi)體(ti)排(pai)(pai)入大氣(qi)(qi)(qi)(qi)(qi)。
工作原理
靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)器的(de)工作原理(li)是利(li)用高(gao)(gao)壓(ya)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場使煙氣(qi)(qi)(qi)發生電(dian)(dian)(dian)(dian)(dian)(dian)(dian)離(li),氣(qi)(qi)(qi)流(liu)中的(de)粉(fen)(fen)塵(chen)(chen)荷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場作用下與氣(qi)(qi)(qi)流(liu)分離(li)。負極(ji)由(you)不(bu)同斷面形(xing)狀的(de)金(jin)屬(shu)導線制成(cheng),叫(jiao)放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)。正極(ji)由(you)不(bu)同幾何形(xing)狀的(de)金(jin)屬(shu)板制成(cheng),叫(jiao)集塵(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)。靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)器的(de)性能受粉(fen)(fen)塵(chen)(chen)性質、設(she)備(bei)構造和(he)煙氣(qi)(qi)(qi)流(liu)速等三(san)個因素(su)的(de)影響(xiang)。粉(fen)(fen)塵(chen)(chen)的(de)比(bi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻是評價導電(dian)(dian)(dian)(dian)(dian)(dian)(dian)性的(de)指標,它對(dui)除(chu)塵(chen)(chen)效率有(you)直接的(de)影響(xiang)。比(bi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻過低,塵(chen)(chen)粒難以保持在(zai)集塵(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)上,致使其重返氣(qi)(qi)(qi)流(liu)。比(bi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻過高(gao)(gao),到達(da)集塵(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)的(de)塵(chen)(chen)粒電(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷不(bu)易放(fang)出,在(zai)塵(chen)(chen)層之(zhi)間形(xing)成(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)梯度會(hui)產生局(ju)部(bu)擊(ji)穿和(he)放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)現(xian)象。這些情(qing)況都會(hui)造成(cheng)除(chu)塵(chen)(chen)效率下降。
電(dian)(dian)除塵器的(de)(de)基本原理(li)是(shi)利用(yong)電(dian)(dian)力捕集煙氣中的(de)(de)粉塵,主要包括以下(xia)四個相互有關(guan)的(de)(de)物理(li)過程(cheng): (1) 氣體的(de)(de)電(dian)(dian)離。(2) 粉塵的(de)(de)荷電(dian)(dian)。(3) 荷電(dian)(dian)粉塵向電(dian)(dian)極移動。(4) 荷電(dian)(dian)粉塵的(de)(de)捕集。