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)燒煤的發電廠將煤磨成(cheng)100微米以下的煤粉(fen)(fen)(fen)，用預(yu)熱(re)空氣(qi)(qi)噴入爐膛經(jing)燃(ran)燒形成(cheng)懸浮狀態，產生混(hun)雜(za)有(you)大量不燃(ran)物的高溫煙氣(qi)(qi)，經(jing)集塵裝(zhuang)置(zhi)捕集就得到了粉(fen)(fen)(fen)煤灰(hui)。粉(fen)(fen)(fen)煤灰(hui)的化(hua)(hua)學組成(cheng)與粘土(tu)質(zhi)相似，主(zhu)要(yao)成(cheng)分為二氧(yang)(yang)化(hua)(hua)硅、三(san)氧(yang)(yang)化(hua)(hua)二鋁、三(san)氧(yang)(yang)化(hua)(hua)二鐵、氧(yang)(yang)化(hua)(hua)鈣和未燃(ran)盡碳(tan)。

工作(zuo)原(yuan)理

濕粉煤灰(hui)由(you)供料(liao)裝(zhuang)置進(jin)(jin)入(ru)三層(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)筒的(de)(de)(de)內(nei)層(ceng)(ceng)(ceng)(ceng)(ceng),實現順流烘干(gan), 粉煤灰(hui)在(zai)內(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)的(de)(de)(de)抄板下不(bu)斷抄起、散落呈螺旋行(xing)(xing)(xing)進(jin)(jin)式實現熱(re)(re)交換，物(wu)(wu)料(liao)移動至內(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)的(de)(de)(de)另一端(duan)(duan)進(jin)(jin)入(ru)中層(ceng)(ceng)(ceng)(ceng)(ceng)，進(jin)(jin)行(xing)(xing)(xing)逆(ni)流烘干(gan)，物(wu)(wu)料(liao)在(zai)中層(ceng)(ceng)(ceng)(ceng)(ceng)不(bu)斷地被反復揚(yang)進(jin)(jin)，呈進(jin)(jin)兩步退一步的(de)(de)(de)行(xing)(xing)(xing)進(jin)(jin)方式，物(wu)(wu)料(liao)在(zai)中層(ceng)(ceng)(ceng)(ceng)(ceng)既(ji)充(chong)分吸收(shou)內(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)筒散發的(de)(de)(de)熱(re)(re)量，又(you)吸收(shou)中層(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)筒的(de)(de)(de)熱(re)(re)量，同時又(you)延長了干(gan)燥時間，物(wu)(wu)料(liao)在(zai)此達(da)到干(gan)燥狀態。物(wu)(wu)料(liao)行(xing)(xing)(xing)至中層(ceng)(ceng)(ceng)(ceng)(ceng)另一端(duan)(duan)而落入(ru)外層(ceng)(ceng)(ceng)(ceng)(ceng)，物(wu)(wu)料(liao)在(zai)外層(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)筒內(nei)呈矩形多回路方式行(xing)(xing)(xing)進(jin)(jin)，達(da)到干(gan)燥效(xiao)果的(de)(de)(de)物(wu)(wu)料(liao)在(zai)熱(re)(re)風作用下快速行(xing)(xing)(xing)進(jin)(jin)排出滾(gun)筒，沒有達(da)到干(gan)燥效(xiao)果的(de)(de)(de)濕物(wu)(wu)料(liao)因自重而不(bu)能(neng)快速行(xing)(xing)(xing)進(jin)(jin)，物(wu)(wu)料(liao)在(zai)此矩形抄板內(nei)進(jin)(jin)行(xing)(xing)(xing)充(chong)分干(gan)燥，由(you)此達(da)到干(gan)燥效(xiao)果，完成(cheng)干(gan)燥過(guo)程。

設備特(te)點

該設備(bei)與其(qi)他(ta)干(gan)燥設備(bei)相比(bi)，生(sheng)產(chan)能力(li)大(da)，可(ke)連續操(cao)作； 結構(gou)簡單(dan)，操(cao)作方(fang)便；故(gu)障少，維(wei)修(xiu)費(fei)用(yong)(yong)低(di)；適用(yong)(yong)范圍(wei)廣，流(liu)體阻(zu)力(li)小，可(ke)以用(yong)(yong)它(ta)干(gan)燥顆料狀物料，對于(yu)那些附著性(xing)大(da)的(de)物料也很有利；操(cao)作彈性(xing)大(da)，生(sheng)產(chan)上允許產(chan)品的(de)流(liu)量有較大(da)波動范圍(wei)，不(bu)會影(ying)響產(chan)品的(de)質量；清掃容易。