噴霧降塵除塵裝置

分類

按(an)捕(bu)集(ji)(ji)機理(li)可(ke)分(fen)為(wei)機械除(chu)(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)(chen)器(qi)(qi)、電(dian)(dian)除(chu)(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)(chen)器(qi)(qi)、過(guo)濾(lv)除(chu)(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)(chen)器(qi)(qi)和洗滌除(chu)(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)(chen)器(qi)(qi)等。機械除(chu)(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)(chen)器(qi)(qi)依靠(kao)機械力將塵(chen)(chen)(chen)(chen)(chen)(chen)(chen)粒(li)(li)從氣(qi)(qi)(qi)流(liu)(liu)中除(chu)(chu)(chu)(chu)去，其(qi)結構簡單，設備費(fei)和運行費(fei)均(jun)較低，但除(chu)(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)(chen)效率不(bu)高(gao)。電(dian)(dian)除(chu)(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)(chen)器(qi)(qi)利用靜電(dian)(dian)力實現塵(chen)(chen)(chen)(chen)(chen)(chen)(chen)粒(li)(li)與(yu)(yu)(yu)氣(qi)(qi)(qi)流(liu)(liu)分(fen)離，常按(an)板(ban)式(shi)與(yu)(yu)(yu)管式(shi)分(fen)類，特點是氣(qi)(qi)(qi)流(liu)(liu)阻力小(xiao)，除(chu)(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)(chen)效率可(ke)達99%以上，但投資較高(gao)。占地面(mian)積較大。過(guo)濾(lv)除(chu)(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)(chen)器(qi)(qi)使含塵(chen)(chen)(chen)(chen)(chen)(chen)(chen)氣(qi)(qi)(qi)流(liu)(liu)通過(guo)濾(lv)料(liao)將塵(chen)(chen)(chen)(chen)(chen)(chen)(chen)粒(li)(li)分(fen)離捕(bu)集(ji)(ji)，分(fen)內部過(guo)濾(lv)和表面(mian)過(guo)濾(lv)兩種方式(shi)，除(chu)(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)(chen)效率一般為(wei)90%~99%，不(bu)適(shi)用于溫度高(gao)的含塵(chen)(chen)(chen)(chen)(chen)(chen)(chen)氣(qi)(qi)(qi)體。洗滌除(chu)(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)(chen)器(qi)(qi)用液體洗滌含塵(chen)(chen)(chen)(chen)(chen)(chen)(chen)氣(qi)(qi)(qi)體，使塵(chen)(chen)(chen)(chen)(chen)(chen)(chen)粒(li)(li)與(yu)(yu)(yu)液滴(di)或液膜碰撞而被俘獲，并與(yu)(yu)(yu)氣(qi)(qi)(qi)流(liu)(liu)分(fen)離，除(chu)(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)(chen)效率為(wei)80%~95%，運轉費(fei)用較高(gao)。為(wei)提高(gao)對微(wei)粒(li)(li)的捕(bu)集(ji)(ji)效率，正在研制荷(he)電(dian)(dian)袋式(shi)過(guo)濾(lv)器(qi)(qi)、荷(he)電(dian)(dian)液滴(di)洗滌器(qi)(qi)等綜(zong)合幾(ji)種除(chu)(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)(chen)機制的新(xin)型除(chu)(chu)(chu)(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)(chen)器(qi)(qi)。

除(chu)(chu)塵(chen)(chen)設備行(xing)業發(fa)展(zhan)概(gai)況除(chu)(chu)塵(chen)(chen)設備主要應用于(yu)水(shui)(shui)泥(ni)、鋼鐵(tie)、有色金(jin)屬(shu)、電(dian)力、機械、化(hua)工、垃(la)圾焚燒等粉塵(chen)(chen)污染嚴重的(de)(de)行(xing)業。除(chu)(chu)塵(chen)(chen)設備行(xing)業總產(chan)值變化(hua)情況與國內外經濟發(fa)展(zhan)環(huan)境、下游行(xing)業發(fa)展(zhan)狀況等緊密(mi)相(xiang)關(guan)。近年(nian)來，我國除(chu)(chu)塵(chen)(chen)設備總產(chan)值(銷售收(shou)入)有所(suo)波動，由2005年(nian)的(de)(de)139.98億元(yuan)增加至2008年(nian)的(de)(de)290.07億元(yuan)，年(nian)均復合增長(chang)率達到27.49%。2009年(nian)，受金(jin)融(rong)危機影響，我國水(shui)(shui)泥(ni)、鋼鐵(tie)、有色金(jin)屬(shu)、機械等行(xing)業發(fa)展(zhan)增速大(da)幅度回(hui)落(luo)，部分行(xing)業產(chan)值甚至出現負增長(chang)，從而使(shi)得我國除(chu)(chu)塵(chen)(chen)設備行(xing)業總產(chan)值暫時(shi)出現小幅下降。

噴(pen)嘴所噴(pen)水滴與粉塵顆(ke)粒發生非彈性碰(peng)撞；吸(xi)附顆(ke)粒并(bing)且(qie)包裹住(zhu)，達到(dao)(dao)一定重量滴落，起到(dao)(dao)除塵的作用(yong)。

水滴與粉塵相互(hu)粘接、凝聚、長大、比重(zhong)增加，然(ran)后(hou)與大氣或煙(yan)氣分離。

云霧抑塵

云霧(wu)(wu)(wu)抑(yi)塵技術(shu)是通(tong)過高壓離(li)子(zi)霧(wu)(wu)(wu)化(hua)和超聲(sheng)波霧(wu)(wu)(wu)化(hua) ，可產(chan)生(sheng)1μm~100μm的(de)(de)超細(xi)(xi)干霧(wu)(wu)(wu);超細(xi)(xi)干霧(wu)(wu)(wu)顆粒細(xi)(xi)密，充分增加與粉塵顆粒的(de)(de)接觸面積，水霧(wu)(wu)(wu)顆粒與粉塵顆粒碰撞并凝(ning)聚(ju)，形(xing)成團(tuan)聚(ju)物，團(tuan)聚(ju)物不斷變大(da)變重，直至自(zi)然沉降(jiang)，達(da)到消除粉塵的(de)(de)目的(de)(de);所產(chan)生(sheng)的(de)(de)干霧(wu)(wu)(wu)顆粒，30%~40%粒徑在(zai)2.5μm以下，對大(da)氣細(xi)(xi)微顆粒污(wu)染的(de)(de)防治效果明顯。

噴霧降塵除塵裝置