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。

它是燃(ran)(ran)燒(shao)煤的發電(dian)廠將煤磨成100微(wei)米以下的煤粉，用(yong)預(yu)熱空氣噴入(ru)爐膛經(jing)燃(ran)(ran)燒(shao)形成懸浮狀態，產生(sheng)混雜有(you)大量不燃(ran)(ran)物的高(gao)溫煙氣，經(jing)集(ji)塵(chen)裝(zhuang)置捕集(ji)就得(de)到了粉煤灰(hui)(hui)。粉煤灰(hui)(hui)的化學(xue)組成與粘土質(zhi)相似，主要成分為(wei)二(er)氧化硅、三(san)氧化二(er)鋁、三(san)氧化二(er)鐵、氧化鈣和未(wei)燃(ran)(ran)盡碳。

工(gong)作原理

濕(shi)粉(fen)煤灰(hui)由(you)供(gong)料(liao)(liao)裝置(zhi)進(jin)(jin)(jin)入(ru)三層(ceng)(ceng)滾筒(tong)(tong)(tong)的內(nei)層(ceng)(ceng),實(shi)現(xian)順流(liu)(liu)烘(hong)干(gan)(gan), 粉(fen)煤灰(hui)在(zai)內(nei)層(ceng)(ceng)的抄(chao)板下(xia)不斷(duan)抄(chao)起、散(san)落呈螺旋(xuan)行(xing)(xing)(xing)進(jin)(jin)(jin)式(shi)實(shi)現(xian)熱交換，物(wu)(wu)(wu)料(liao)(liao)移動至內(nei)層(ceng)(ceng)的另(ling)一端(duan)進(jin)(jin)(jin)入(ru)中層(ceng)(ceng)，進(jin)(jin)(jin)行(xing)(xing)(xing)逆流(liu)(liu)烘(hong)干(gan)(gan)，物(wu)(wu)(wu)料(liao)(liao)在(zai)中層(ceng)(ceng)不斷(duan)地被(bei)反復揚進(jin)(jin)(jin)，呈進(jin)(jin)(jin)兩步退一步的行(xing)(xing)(xing)進(jin)(jin)(jin)方(fang)式(shi)，物(wu)(wu)(wu)料(liao)(liao)在(zai)中層(ceng)(ceng)既充分(fen)吸(xi)收內(nei)層(ceng)(ceng)滾筒(tong)(tong)(tong)散(san)發的熱量，又(you)吸(xi)收中層(ceng)(ceng)滾筒(tong)(tong)(tong)的熱量，同時又(you)延長(chang)了干(gan)(gan)燥(zao)時間，物(wu)(wu)(wu)料(liao)(liao)在(zai)此(ci)達(da)到干(gan)(gan)燥(zao)狀態。物(wu)(wu)(wu)料(liao)(liao)行(xing)(xing)(xing)至中層(ceng)(ceng)另(ling)一端(duan)而落入(ru)外(wai)層(ceng)(ceng)，物(wu)(wu)(wu)料(liao)(liao)在(zai)外(wai)層(ceng)(ceng)滾筒(tong)(tong)(tong)內(nei)呈矩(ju)形(xing)多回路方(fang)式(shi)行(xing)(xing)(xing)進(jin)(jin)(jin)，達(da)到干(gan)(gan)燥(zao)效果的物(wu)(wu)(wu)料(liao)(liao)在(zai)熱風作用下(xia)快速(su)行(xing)(xing)(xing)進(jin)(jin)(jin)排出(chu)滾筒(tong)(tong)(tong)，沒有達(da)到干(gan)(gan)燥(zao)效果的濕(shi)物(wu)(wu)(wu)料(liao)(liao)因自重而不能快速(su)行(xing)(xing)(xing)進(jin)(jin)(jin)，物(wu)(wu)(wu)料(liao)(liao)在(zai)此(ci)矩(ju)形(xing)抄(chao)板內(nei)進(jin)(jin)(jin)行(xing)(xing)(xing)充分(fen)干(gan)(gan)燥(zao)，由(you)此(ci)達(da)到干(gan)(gan)燥(zao)效果，完(wan)成干(gan)(gan)燥(zao)過(guo)程。

設備(bei)特點

該設備與其他干(gan)燥設備相比，生產能力大(da)，可連(lian)續操作； 結構簡單，操作方便(bian)；故障少，維修費用(yong)低；適(shi)用(yong)范圍廣，流(liu)體阻力小，可以用(yong)它干(gan)燥顆料(liao)狀(zhuang)物(wu)料(liao)，對于那些附著性大(da)的(de)物(wu)料(liao)也(ye)很有利(li)；操作彈性大(da)，生產上允許產品的(de)流(liu)量有較大(da)波動范圍，不(bu)會影(ying)響產品的(de)質量；清掃容易。