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)燒煤的發電廠將煤磨成(cheng)(cheng)100微米以下的煤粉，用預熱(re)空氣(qi)噴入爐膛經燃(ran)(ran)燒形成(cheng)(cheng)懸(xuan)浮狀態，產生混雜有大量不(bu)燃(ran)(ran)物的高溫煙氣(qi)，經集(ji)塵裝置捕集(ji)就得到了粉煤灰(hui)。粉煤灰(hui)的化學組成(cheng)(cheng)與粘(zhan)土質相似(si)，主要成(cheng)(cheng)分為二氧(yang)化硅、三氧(yang)化二鋁、三氧(yang)化二鐵、氧(yang)化鈣(gai)和未燃(ran)(ran)盡碳。

工(gong)作原理

濕(shi)粉(fen)煤灰由供料(liao)(liao)裝置進(jin)(jin)(jin)入三層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)(gun)筒的(de)(de)內(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng),實現順流烘(hong)干(gan), 粉(fen)煤灰在(zai)(zai)(zai)內(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)的(de)(de)抄板(ban)下不(bu)(bu)(bu)斷抄起、散落呈螺旋行(xing)進(jin)(jin)(jin)式實現熱(re)交(jiao)換(huan)，物(wu)(wu)料(liao)(liao)移動至內(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)的(de)(de)另一端(duan)進(jin)(jin)(jin)入中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)，進(jin)(jin)(jin)行(xing)逆流烘(hong)干(gan)，物(wu)(wu)料(liao)(liao)在(zai)(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)不(bu)(bu)(bu)斷地被反復揚(yang)進(jin)(jin)(jin)，呈進(jin)(jin)(jin)兩步退一步的(de)(de)行(xing)進(jin)(jin)(jin)方(fang)(fang)式，物(wu)(wu)料(liao)(liao)在(zai)(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)既充分吸(xi)收內(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)(gun)筒散發的(de)(de)熱(re)量(liang)，又(you)吸(xi)收中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)(gun)筒的(de)(de)熱(re)量(liang)，同時又(you)延(yan)長了干(gan)燥(zao)(zao)(zao)(zao)時間，物(wu)(wu)料(liao)(liao)在(zai)(zai)(zai)此(ci)(ci)達(da)到(dao)(dao)干(gan)燥(zao)(zao)(zao)(zao)狀態。物(wu)(wu)料(liao)(liao)行(xing)至中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)另一端(duan)而落入外層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)，物(wu)(wu)料(liao)(liao)在(zai)(zai)(zai)外層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)(gun)筒內(nei)呈矩(ju)(ju)形(xing)多回路方(fang)(fang)式行(xing)進(jin)(jin)(jin)，達(da)到(dao)(dao)干(gan)燥(zao)(zao)(zao)(zao)效果(guo)的(de)(de)物(wu)(wu)料(liao)(liao)在(zai)(zai)(zai)熱(re)風(feng)作用(yong)下快(kuai)速(su)行(xing)進(jin)(jin)(jin)排出滾(gun)(gun)筒，沒有達(da)到(dao)(dao)干(gan)燥(zao)(zao)(zao)(zao)效果(guo)的(de)(de)濕(shi)物(wu)(wu)料(liao)(liao)因自重而不(bu)(bu)(bu)能快(kuai)速(su)行(xing)進(jin)(jin)(jin)，物(wu)(wu)料(liao)(liao)在(zai)(zai)(zai)此(ci)(ci)矩(ju)(ju)形(xing)抄板(ban)內(nei)進(jin)(jin)(jin)行(xing)充分干(gan)燥(zao)(zao)(zao)(zao)，由此(ci)(ci)達(da)到(dao)(dao)干(gan)燥(zao)(zao)(zao)(zao)效果(guo)，完成干(gan)燥(zao)(zao)(zao)(zao)過程。

設(she)備特點

該設備與其他干(gan)燥設備相比，生產(chan)(chan)能力大，可(ke)連續操作； 結構簡單，操作方便(bian)；故障少，維修費用(yong)低；適用(yong)范(fan)圍廣(guang)，流(liu)體阻力小(xiao)，可(ke)以用(yong)它(ta)干(gan)燥顆料狀(zhuang)物料，對于(yu)那些附著性大的物料也很有(you)利；操作彈(dan)性大，生產(chan)(chan)上允許產(chan)(chan)品的流(liu)量有(you)較大波動范(fan)圍，不(bu)會影響產(chan)(chan)品的質(zhi)量；清掃容易。