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(ta)是燃(ran)燒煤(mei)(mei)的(de)發電(dian)廠將煤(mei)(mei)磨成(cheng)100微米以下的(de)煤(mei)(mei)粉(fen)(fen)，用預(yu)熱空氣噴(pen)入爐膛經(jing)(jing)燃(ran)燒形(xing)成(cheng)懸浮狀態，產生混雜有大量不燃(ran)物(wu)的(de)高溫煙(yan)氣，經(jing)(jing)集塵裝(zhuang)置捕集就(jiu)得到了粉(fen)(fen)煤(mei)(mei)灰(hui)。粉(fen)(fen)煤(mei)(mei)灰(hui)的(de)化學組成(cheng)與粘土(tu)質相似，主要成(cheng)分(fen)為(wei)二(er)氧(yang)化硅(gui)、三氧(yang)化二(er)鋁、三氧(yang)化二(er)鐵、氧(yang)化鈣和(he)未(wei)燃(ran)盡碳。

工作(zuo)原理

濕粉煤灰由供料(liao)裝置進(jin)入三層(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)的(de)(de)內(nei)(nei)層(ceng)(ceng)(ceng)(ceng),實現順(shun)流烘干(gan)(gan), 粉煤灰在(zai)(zai)(zai)內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)的(de)(de)抄板下(xia)不斷抄起(qi)、散(san)落呈(cheng)(cheng)螺旋行(xing)進(jin)式(shi)實現熱(re)交(jiao)換(huan)，物(wu)(wu)(wu)(wu)料(liao)移動至內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)的(de)(de)另(ling)一端(duan)進(jin)入中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)，進(jin)行(xing)逆流烘干(gan)(gan)，物(wu)(wu)(wu)(wu)料(liao)在(zai)(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)不斷地被反復揚進(jin)，呈(cheng)(cheng)進(jin)兩步退一步的(de)(de)行(xing)進(jin)方式(shi)，物(wu)(wu)(wu)(wu)料(liao)在(zai)(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)既充分(fen)吸(xi)收(shou)內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)散(san)發(fa)的(de)(de)熱(re)量，又(you)吸(xi)收(shou)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)的(de)(de)熱(re)量，同(tong)時(shi)又(you)延長了(le)干(gan)(gan)燥(zao)時(shi)間，物(wu)(wu)(wu)(wu)料(liao)在(zai)(zai)(zai)此(ci)達(da)到干(gan)(gan)燥(zao)狀(zhuang)態。物(wu)(wu)(wu)(wu)料(liao)行(xing)至中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)另(ling)一端(duan)而落入外層(ceng)(ceng)(ceng)(ceng)，物(wu)(wu)(wu)(wu)料(liao)在(zai)(zai)(zai)外層(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)內(nei)(nei)呈(cheng)(cheng)矩(ju)形(xing)多回路方式(shi)行(xing)進(jin)，達(da)到干(gan)(gan)燥(zao)效(xiao)果(guo)的(de)(de)物(wu)(wu)(wu)(wu)料(liao)在(zai)(zai)(zai)熱(re)風(feng)作用下(xia)快(kuai)速行(xing)進(jin)排出滾(gun)筒(tong)(tong)，沒(mei)有達(da)到干(gan)(gan)燥(zao)效(xiao)果(guo)的(de)(de)濕物(wu)(wu)(wu)(wu)料(liao)因(yin)自重而不能快(kuai)速行(xing)進(jin)，物(wu)(wu)(wu)(wu)料(liao)在(zai)(zai)(zai)此(ci)矩(ju)形(xing)抄板內(nei)(nei)進(jin)行(xing)充分(fen)干(gan)(gan)燥(zao)，由此(ci)達(da)到干(gan)(gan)燥(zao)效(xiao)果(guo)，完成干(gan)(gan)燥(zao)過程。

設備特(te)點

該設備(bei)與其他干燥(zao)設備(bei)相比，生(sheng)產能力(li)大，可(ke)連續操(cao)(cao)作(zuo)； 結構簡(jian)單，操(cao)(cao)作(zuo)方便；故障少，維(wei)修(xiu)費(fei)用低(di)；適(shi)用范圍廣(guang)，流體阻力(li)小，可(ke)以用它干燥(zao)顆料狀(zhuang)物料，對于那些附著(zhu)性大的(de)物料也很有利；操(cao)(cao)作(zuo)彈(dan)性大，生(sheng)產上允許產品(pin)的(de)流量有較大波動范圍，不會影響產品(pin)的(de)質(zhi)量；清掃容易。