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(jing)電(dian)(dian)(dian)(dian)除(chu)塵(chen)器是(shi)以(yi)靜(jing)電(dian)(dian)(dian)(dian)凈化(hua)法來(lai)(lai)收捕廢氣(qi)(qi)(qi)(qi)中的(de)(de)(de)粉塵(chen),它的(de)(de)(de)凈化(hua)工作上(shang)(shang)要是(shi)依(yi)靠電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)和沉淀兩個系統來(lai)(lai)完成的(de)(de)(de),當含塵(chen)氣(qi)(qi)(qi)(qi)體(ti)(ti)進(jin)(jin)人(ren)(ren)氣(qi)(qi)(qi)(qi)刺(ci)叭時,含塵(chen)氣(qi)(qi)(qi)(qi)體(ti)(ti)受到氣(qi)(qi)(qi)(qi)流(liu)分布板以(yi)及折流(liu)板的(de)(de)(de)調整(zheng)后(hou),使(shi)氣(qi)(qi)(qi)(qi)流(liu)能(neng)較(jiao)(jiao)均勻地進(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)場(chang)(chang)。在(zai)(zai)(zai)(zai)橫斷面擴大(da)的(de)(de)(de)作用下,氣(qi)(qi)(qi)(qi)流(liu)速(su)度迅速(su)降低(di),其中有(you)(you)些較(jiao)(jiao)重的(de)(de)(de)塵(chen)粒便失去(qu)速(su)度而沉降下來(lai)(lai)。進(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)場(chang)(chang)的(de)(de)(de)含塵(chen)氣(qi)(qi)(qi)(qi)體(ti)(ti)由于電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)通人(ren)(ren)高壓直(zhi)流(liu)電(dian)(dian)(dian)(dian),則在(zai)(zai)(zai)(zai)電(dian)(dian)(dian)(dian)暈(yun)極(ji)(ji)(ji)附近產生(sheng)電(dian)(dian)(dian)(dian)暈(yun)現象,使(shi)氣(qi)(qi)(qi)(qi)體(ti)(ti)電(dian)(dian)(dian)(dian)離(li),電(dian)(dian)(dian)(dian)離(li)后(hou)的(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)(ti)中存在(zai)(zai)(zai)(zai)大(da)量的(de)(de)(de)電(dian)(dian)(dian)(dian)子和離(li)子,這(zhe)些電(dian)(dian)(dian)(dian)子和離(li)子與進(jin)(jin)人(ren)(ren)電(dian)(dian)(dian)(dian)場(chang)(chang)的(de)(de)(de)粉塵(chen)結合起來(lai)(lai),使(shi)塵(chen)粒帶(dai)(dai)電(dian)(dian)(dian)(dian),帶(dai)(dai)電(dian)(dian)(dian)(dian)塵(chen)粒在(zai)(zai)(zai)(zai)電(dian)(dian)(dian)(dian)場(chang)(chang)力的(de)(de)(de)作用下趨向本(ben)(ben)設備陽極(ji)(ji)(ji)(正極(ji)(ji)(ji)、本(ben)(ben)設備采用負(fu)高壓制)和陰極(ji)(ji)(ji)(負(fu)極(ji)(ji)(ji)) , 釋放出(chu)(chu)電(dian)(dian)(dian)(dian)子分別沉積在(zai)(zai)(zai)(zai)相應的(de)(de)(de)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上(shang)(shang),通過設備陰陽極(ji)(ji)(ji)振(zhen)打系統的(de)(de)(de)振(zhen)打,使(shi)沉積在(zai)(zai)(zai)(zai)陰陽電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上(shang)(shang)的(de)(de)(de)粉塵(chen)振(zhen)落(luo),進(jin)(jin)人(ren)(ren)集灰(hui)斗(dou) 通過排(pai)灰(hui)裝置放出(chu)(chu),回收有(you)(you)物料,被)凈化(hua)的(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)(ti)排(pai)入大(da)氣(qi)(qi)(qi)(qi)。
工(gong)作原理
靜(jing)電(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)器的(de)(de)(de)(de)(de)工作(zuo)原理是利用高壓(ya)電(dian)(dian)(dian)(dian)場(chang)(chang)使煙(yan)氣(qi)發生電(dian)(dian)(dian)(dian)離(li),氣(qi)流(liu)(liu)中的(de)(de)(de)(de)(de)粉塵(chen)(chen)荷(he)電(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)場(chang)(chang)作(zuo)用下與氣(qi)流(liu)(liu)分離(li)。負(fu)極由(you)不同斷面形(xing)狀的(de)(de)(de)(de)(de)金(jin)屬導線制成(cheng),叫放電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)極。正極由(you)不同幾何(he)形(xing)狀的(de)(de)(de)(de)(de)金(jin)屬板(ban)制成(cheng),叫集(ji)塵(chen)(chen)電(dian)(dian)(dian)(dian)極。靜(jing)電(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)器的(de)(de)(de)(de)(de)性能受粉塵(chen)(chen)性質、設(she)備構造和(he)(he)煙(yan)氣(qi)流(liu)(liu)速等(deng)三個因(yin)素(su)的(de)(de)(de)(de)(de)影響(xiang)。粉塵(chen)(chen)的(de)(de)(de)(de)(de)比(bi)電(dian)(dian)(dian)(dian)阻(zu)(zu)是評價導電(dian)(dian)(dian)(dian)性的(de)(de)(de)(de)(de)指標,它對除(chu)塵(chen)(chen)效率有直接的(de)(de)(de)(de)(de)影響(xiang)。比(bi)電(dian)(dian)(dian)(dian)阻(zu)(zu)過低,塵(chen)(chen)粒難以保持在集(ji)塵(chen)(chen)電(dian)(dian)(dian)(dian)極上,致(zhi)使其重返氣(qi)流(liu)(liu)。比(bi)電(dian)(dian)(dian)(dian)阻(zu)(zu)過高,到達集(ji)塵(chen)(chen)電(dian)(dian)(dian)(dian)極的(de)(de)(de)(de)(de)塵(chen)(chen)粒電(dian)(dian)(dian)(dian)荷(he)不易放出,在塵(chen)(chen)層之間形(xing)成(cheng)電(dian)(dian)(dian)(dian)壓(ya)梯度會產生局部擊穿和(he)(he)放電(dian)(dian)(dian)(dian)現(xian)象。這些情況都會造成(cheng)除(chu)塵(chen)(chen)效率下降。
電除(chu)塵(chen)器的(de)基本(ben)原(yuan)理(li)是(shi)利用電力捕集煙氣(qi)(qi)中的(de)粉(fen)塵(chen),主要包括以下四個相互有關的(de)物理(li)過程: (1) 氣(qi)(qi)體的(de)電離(li)。(2) 粉(fen)塵(chen)的(de)荷(he)電。(3) 荷(he)電粉(fen)塵(chen)向電極(ji)移動(dong)。(4) 荷(he)電粉(fen)塵(chen)的(de)捕集。