粉煤灰烘干機是煤粉經高溫燃燒后形成的一種似火山灰質混合材料。

它是(shi)燃燒煤(mei)(mei)的(de)發(fa)電廠將煤(mei)(mei)磨(mo)成100微(wei)米(mi)以下(xia)的(de)煤(mei)(mei)粉，用預熱空氣噴(pen)入(ru)爐膛經(jing)燃燒形成懸(xuan)浮狀態，產生混雜有(you)大量不燃物的(de)高溫煙(yan)氣，經(jing)集(ji)塵裝置捕(bu)集(ji)就得到(dao)了粉煤(mei)(mei)灰。粉煤(mei)(mei)灰的(de)化學(xue)組(zu)成與(yu)粘(zhan)土(tu)質(zhi)相似，主要成分為二氧化硅(gui)、三氧化二鋁、三氧化二鐵、氧化鈣和未(wei)燃盡碳。

工(gong)作原理

濕(shi)(shi)粉(fen)煤灰由供(gong)料(liao)(liao)(liao)(liao)裝置進(jin)入(ru)三層(ceng)(ceng)(ceng)(ceng)(ceng)滾筒(tong)的(de)(de)(de)內(nei)層(ceng)(ceng)(ceng)(ceng)(ceng),實現(xian)順流(liu)烘(hong)干(gan)(gan), 粉(fen)煤灰在(zai)(zai)內(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)的(de)(de)(de)抄板下不斷(duan)抄起、散(san)落呈(cheng)螺旋行(xing)(xing)進(jin)式(shi)實現(xian)熱(re)(re)(re)交換(huan)，物(wu)(wu)料(liao)(liao)(liao)(liao)移動(dong)至(zhi)內(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)的(de)(de)(de)另(ling)一(yi)端(duan)進(jin)入(ru)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)，進(jin)行(xing)(xing)逆流(liu)烘(hong)干(gan)(gan)，物(wu)(wu)料(liao)(liao)(liao)(liao)在(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)不斷(duan)地被(bei)反復(fu)揚(yang)進(jin)，呈(cheng)進(jin)兩步退一(yi)步的(de)(de)(de)行(xing)(xing)進(jin)方(fang)式(shi)，物(wu)(wu)料(liao)(liao)(liao)(liao)在(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)既(ji)充(chong)分吸收(shou)內(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)滾筒(tong)散(san)發的(de)(de)(de)熱(re)(re)(re)量，又(you)吸收(shou)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)滾筒(tong)的(de)(de)(de)熱(re)(re)(re)量，同時又(you)延長了(le)干(gan)(gan)燥(zao)(zao)時間，物(wu)(wu)料(liao)(liao)(liao)(liao)在(zai)(zai)此(ci)達到(dao)干(gan)(gan)燥(zao)(zao)狀態。物(wu)(wu)料(liao)(liao)(liao)(liao)行(xing)(xing)至(zhi)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)另(ling)一(yi)端(duan)而落入(ru)外(wai)層(ceng)(ceng)(ceng)(ceng)(ceng)，物(wu)(wu)料(liao)(liao)(liao)(liao)在(zai)(zai)外(wai)層(ceng)(ceng)(ceng)(ceng)(ceng)滾筒(tong)內(nei)呈(cheng)矩形多回路方(fang)式(shi)行(xing)(xing)進(jin)，達到(dao)干(gan)(gan)燥(zao)(zao)效(xiao)果的(de)(de)(de)物(wu)(wu)料(liao)(liao)(liao)(liao)在(zai)(zai)熱(re)(re)(re)風作用下快速行(xing)(xing)進(jin)排(pai)出(chu)滾筒(tong)，沒有達到(dao)干(gan)(gan)燥(zao)(zao)效(xiao)果的(de)(de)(de)濕(shi)(shi)物(wu)(wu)料(liao)(liao)(liao)(liao)因自(zi)重(zhong)而不能快速行(xing)(xing)進(jin)，物(wu)(wu)料(liao)(liao)(liao)(liao)在(zai)(zai)此(ci)矩形抄板內(nei)進(jin)行(xing)(xing)充(chong)分干(gan)(gan)燥(zao)(zao)，由此(ci)達到(dao)干(gan)(gan)燥(zao)(zao)效(xiao)果，完成干(gan)(gan)燥(zao)(zao)過程。

設備特點

該設備與其他干(gan)(gan)燥設備相比，生(sheng)(sheng)產(chan)(chan)能力大(da)(da)(da)，可連續操(cao)作； 結構簡(jian)單，操(cao)作方便；故障少(shao)，維修費用低；適用范(fan)圍廣，流體(ti)阻力小，可以用它(ta)干(gan)(gan)燥顆料(liao)狀物料(liao)，對于那些附著性大(da)(da)(da)的物料(liao)也很(hen)有利(li)；操(cao)作彈性大(da)(da)(da)，生(sheng)(sheng)產(chan)(chan)上允許產(chan)(chan)品(pin)(pin)的流量有較大(da)(da)(da)波(bo)動范(fan)圍，不會影響產(chan)(chan)品(pin)(pin)的質量；清掃容易。