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(mei)的(de)發(fa)電廠將煤(mei)磨成(cheng)(cheng)100微米以(yi)下的(de)煤(mei)粉(fen)，用預熱空氣(qi)噴入爐膛經(jing)燃(ran)燒形成(cheng)(cheng)懸浮(fu)狀態，產生(sheng)混雜有大量(liang)不燃(ran)物的(de)高溫煙氣(qi)，經(jing)集(ji)塵裝(zhuang)置捕集(ji)就得到了(le)粉(fen)煤(mei)灰(hui)(hui)。粉(fen)煤(mei)灰(hui)(hui)的(de)化(hua)學組成(cheng)(cheng)與粘(zhan)土質相似，主要成(cheng)(cheng)分為二氧(yang)化(hua)硅、三(san)氧(yang)化(hua)二鋁、三(san)氧(yang)化(hua)二鐵(tie)、氧(yang)化(hua)鈣和未燃(ran)盡(jin)碳。

工作原理

濕粉(fen)煤(mei)灰由供料(liao)(liao)(liao)裝置進(jin)(jin)(jin)(jin)入(ru)三層(ceng)(ceng)(ceng)滾(gun)筒(tong)的內(nei)層(ceng)(ceng)(ceng),實現(xian)順流(liu)(liu)烘干(gan), 粉(fen)煤(mei)灰在(zai)內(nei)層(ceng)(ceng)(ceng)的抄(chao)板下不(bu)(bu)斷(duan)抄(chao)起、散落呈螺(luo)旋(xuan)行(xing)(xing)進(jin)(jin)(jin)(jin)式(shi)實現(xian)熱(re)交換，物(wu)(wu)(wu)料(liao)(liao)(liao)移(yi)動至(zhi)內(nei)層(ceng)(ceng)(ceng)的另一端(duan)進(jin)(jin)(jin)(jin)入(ru)中(zhong)(zhong)層(ceng)(ceng)(ceng)，進(jin)(jin)(jin)(jin)行(xing)(xing)逆流(liu)(liu)烘干(gan)，物(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)不(bu)(bu)斷(duan)地被反復(fu)揚進(jin)(jin)(jin)(jin)，呈進(jin)(jin)(jin)(jin)兩(liang)步退(tui)一步的行(xing)(xing)進(jin)(jin)(jin)(jin)方(fang)式(shi)，物(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)既充(chong)分(fen)吸(xi)收內(nei)層(ceng)(ceng)(ceng)滾(gun)筒(tong)散發(fa)的熱(re)量，又吸(xi)收中(zhong)(zhong)層(ceng)(ceng)(ceng)滾(gun)筒(tong)的熱(re)量，同時(shi)又延長了干(gan)燥時(shi)間，物(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)此(ci)達到(dao)干(gan)燥狀態。物(wu)(wu)(wu)料(liao)(liao)(liao)行(xing)(xing)至(zhi)中(zhong)(zhong)層(ceng)(ceng)(ceng)另一端(duan)而落入(ru)外(wai)層(ceng)(ceng)(ceng)，物(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)外(wai)層(ceng)(ceng)(ceng)滾(gun)筒(tong)內(nei)呈矩形(xing)多回路(lu)方(fang)式(shi)行(xing)(xing)進(jin)(jin)(jin)(jin)，達到(dao)干(gan)燥效(xiao)果的物(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)熱(re)風作用下快速行(xing)(xing)進(jin)(jin)(jin)(jin)排出滾(gun)筒(tong)，沒有達到(dao)干(gan)燥效(xiao)果的濕物(wu)(wu)(wu)料(liao)(liao)(liao)因自重(zhong)而不(bu)(bu)能快速行(xing)(xing)進(jin)(jin)(jin)(jin)，物(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)此(ci)矩形(xing)抄(chao)板內(nei)進(jin)(jin)(jin)(jin)行(xing)(xing)充(chong)分(fen)干(gan)燥，由此(ci)達到(dao)干(gan)燥效(xiao)果，完成干(gan)燥過程。

設備特點

該設備與其他干燥設備相比，生(sheng)(sheng)產能力大(da)(da)，可(ke)連續(xu)操作； 結構簡單，操作方便；故障少(shao)，維修費(fei)用(yong)低；適用(yong)范(fan)圍(wei)廣，流體阻力小(xiao)，可(ke)以用(yong)它(ta)干燥顆(ke)料狀物(wu)料，對于那些附著性大(da)(da)的物(wu)料也很有(you)利；操作彈性大(da)(da)，生(sheng)(sheng)產上允許產品的流量有(you)較大(da)(da)波動(dong)范(fan)圍(wei)，不會影響產品的質量；清(qing)掃容易。