煤粉(fen)灰烘干機是煤粉(fen)經高溫(wen)燃(ran)燒后形(xing)成的一種似火(huo)山灰質混合材(cai)料(liao)。

它是燃(ran)燒煤(mei)(mei)的(de)發電(dian)廠將煤(mei)(mei)磨(mo)成100微米以下的(de)煤(mei)(mei)粉(fen)，用預熱(re)空氣噴入(ru)爐(lu)膛經(jing)燃(ran)燒形成懸(xuan)浮狀態，產生混雜有大(da)量不燃(ran)物(wu)的(de)高(gao)溫煙氣，經(jing)集塵裝置(zhi)捕集就得到了(le)粉(fen)煤(mei)(mei)灰。粉(fen)煤(mei)(mei)灰的(de)化(hua)學組成與粘(zhan)土(tu)質相似(si)，主(zhu)要成分為二(er)氧化(hua)硅、三(san)氧化(hua)二(er)鋁(lv)、三(san)氧化(hua)二(er)鐵、氧化(hua)鈣和未燃(ran)盡碳。

工作(zuo)原理

濕粉煤灰(hui)由供料(liao)(liao)裝置進(jin)(jin)(jin)(jin)入(ru)三層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)的內(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng),實現(xian)順流烘干, 粉煤灰(hui)在(zai)(zai)內(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)的抄板下不斷抄起、散(san)落(luo)呈(cheng)螺旋行(xing)進(jin)(jin)(jin)(jin)式(shi)實現(xian)熱交換，物料(liao)(liao)移動至內(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)的另一(yi)端進(jin)(jin)(jin)(jin)入(ru)中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)，進(jin)(jin)(jin)(jin)行(xing)逆流烘干，物料(liao)(liao)在(zai)(zai)中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)不斷地被反復揚進(jin)(jin)(jin)(jin)，呈(cheng)進(jin)(jin)(jin)(jin)兩步退一(yi)步的行(xing)進(jin)(jin)(jin)(jin)方(fang)(fang)式(shi)，物料(liao)(liao)在(zai)(zai)中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)既充(chong)分吸(xi)收(shou)內(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)散(san)發的熱量，又吸(xi)收(shou)中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)的熱量，同時(shi)又延(yan)長(chang)了(le)干燥(zao)(zao)時(shi)間(jian)，物料(liao)(liao)在(zai)(zai)此(ci)(ci)達(da)到(dao)干燥(zao)(zao)狀態。物料(liao)(liao)行(xing)至中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)另一(yi)端而(er)落(luo)入(ru)外(wai)(wai)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)，物料(liao)(liao)在(zai)(zai)外(wai)(wai)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)內(nei)呈(cheng)矩形多回路方(fang)(fang)式(shi)行(xing)進(jin)(jin)(jin)(jin)，達(da)到(dao)干燥(zao)(zao)效(xiao)果的物料(liao)(liao)在(zai)(zai)熱風作用下快速行(xing)進(jin)(jin)(jin)(jin)排出滾(gun)筒(tong)，沒(mei)有(you)達(da)到(dao)干燥(zao)(zao)效(xiao)果的濕物料(liao)(liao)因(yin)自重而(er)不能(neng)快速行(xing)進(jin)(jin)(jin)(jin)，物料(liao)(liao)在(zai)(zai)此(ci)(ci)矩形抄板內(nei)進(jin)(jin)(jin)(jin)行(xing)充(chong)分干燥(zao)(zao)，由此(ci)(ci)達(da)到(dao)干燥(zao)(zao)效(xiao)果，完成干燥(zao)(zao)過程(cheng)。

設備特(te)點(dian)

該設(she)(she)備與其他干(gan)燥設(she)(she)備相比，生(sheng)產(chan)能(neng)力(li)大，可(ke)連續(xu)操(cao)作； 結構簡單(dan)，操(cao)作方(fang)便；故障少，維修費用(yong)低；適用(yong)范圍廣，流體(ti)阻力(li)小，可(ke)以用(yong)它干(gan)燥顆(ke)料(liao)狀物(wu)料(liao)，對于(yu)那些(xie)附著性大的物(wu)料(liao)也很(hen)有(you)(you)利；操(cao)作彈性大，生(sheng)產(chan)上允許產(chan)品的流量有(you)(you)較大波動(dong)范圍，不會影(ying)響(xiang)產(chan)品的質(zhi)量；清掃容(rong)易。