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。

它是燃燒(shao)煤的(de)發電廠將(jiang)煤磨成(cheng)100微米以下的(de)煤粉，用預(yu)熱空(kong)氣噴入爐膛經燃燒(shao)形成(cheng)懸浮狀(zhuang)態，產生混(hun)雜有大量不(bu)燃物的(de)高溫煙氣，經集塵裝置(zhi)捕(bu)集就得到了(le)粉煤灰(hui)。粉煤灰(hui)的(de)化學組(zu)成(cheng)與(yu)粘土質(zhi)相似(si)，主要成(cheng)分為二氧化硅(gui)、三氧化二鋁、三氧化二鐵(tie)、氧化鈣和(he)未燃盡碳。

工作(zuo)原理

濕粉煤(mei)灰(hui)由(you)供料(liao)裝(zhuang)置進(jin)入三層(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)(tong)的(de)內(nei)層(ceng)(ceng)(ceng)(ceng),實(shi)(shi)現(xian)順流(liu)烘干, 粉煤(mei)灰(hui)在(zai)內(nei)層(ceng)(ceng)(ceng)(ceng)的(de)抄(chao)板下不(bu)斷(duan)抄(chao)起、散(san)落(luo)呈(cheng)螺旋行(xing)(xing)(xing)進(jin)式實(shi)(shi)現(xian)熱(re)交換，物(wu)(wu)料(liao)移動至內(nei)層(ceng)(ceng)(ceng)(ceng)的(de)另一端進(jin)入中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)，進(jin)行(xing)(xing)(xing)逆流(liu)烘干，物(wu)(wu)料(liao)在(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)不(bu)斷(duan)地被反復揚進(jin)，呈(cheng)進(jin)兩步(bu)退一步(bu)的(de)行(xing)(xing)(xing)進(jin)方式，物(wu)(wu)料(liao)在(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)既充分(fen)(fen)吸收內(nei)層(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)(tong)散(san)發的(de)熱(re)量(liang)，又(you)吸收中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)(tong)的(de)熱(re)量(liang)，同(tong)時(shi)又(you)延(yan)長了干燥時(shi)間，物(wu)(wu)料(liao)在(zai)此達(da)到干燥狀態。物(wu)(wu)料(liao)行(xing)(xing)(xing)至中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)另一端而落(luo)入外層(ceng)(ceng)(ceng)(ceng)，物(wu)(wu)料(liao)在(zai)外層(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)(tong)內(nei)呈(cheng)矩形多回路方式行(xing)(xing)(xing)進(jin)，達(da)到干燥效(xiao)(xiao)果的(de)物(wu)(wu)料(liao)在(zai)熱(re)風作用(yong)下快(kuai)速行(xing)(xing)(xing)進(jin)排出滾(gun)筒(tong)(tong)(tong)，沒有達(da)到干燥效(xiao)(xiao)果的(de)濕物(wu)(wu)料(liao)因(yin)自(zi)重而不(bu)能快(kuai)速行(xing)(xing)(xing)進(jin)，物(wu)(wu)料(liao)在(zai)此矩形抄(chao)板內(nei)進(jin)行(xing)(xing)(xing)充分(fen)(fen)干燥，由(you)此達(da)到干燥效(xiao)(xiao)果，完成干燥過(guo)程(cheng)。

設備特(te)點

該設備與其他干燥設備相(xiang)比，生產(chan)能力大(da)，可(ke)連續操(cao)作； 結構簡單(dan)，操(cao)作方(fang)便(bian)；故障少，維(wei)修費用(yong)低(di)；適用(yong)范(fan)圍廣，流(liu)體阻力小，可(ke)以用(yong)它干燥顆(ke)料狀物料，對于(yu)那些附著性大(da)的物料也(ye)很有利；操(cao)作彈性大(da)，生產(chan)上允許(xu)產(chan)品(pin)的流(liu)量(liang)有較大(da)波動范(fan)圍，不會影(ying)響產(chan)品(pin)的質量(liang)；清掃容易。