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。

它是燃燒煤(mei)的(de)(de)發電(dian)廠將(jiang)煤(mei)磨成(cheng)100微(wei)米以下的(de)(de)煤(mei)粉，用預熱(re)空氣(qi)噴入爐膛經燃燒形成(cheng)懸浮狀(zhuang)態，產生混(hun)雜(za)有大量不燃物的(de)(de)高溫煙氣(qi)，經集塵裝置捕集就得到了粉煤(mei)灰(hui)。粉煤(mei)灰(hui)的(de)(de)化(hua)學組成(cheng)與粘土質相似(si)，主要成(cheng)分為(wei)二氧(yang)(yang)化(hua)硅、三氧(yang)(yang)化(hua)二鋁(lv)、三氧(yang)(yang)化(hua)二鐵(tie)、氧(yang)(yang)化(hua)鈣(gai)和未燃盡碳。

工作原(yuan)理

濕(shi)粉煤(mei)(mei)灰由供料(liao)裝置進入(ru)三層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)的內(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng),實(shi)現順流烘干(gan), 粉煤(mei)(mei)灰在(zai)(zai)(zai)內(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)的抄板下(xia)不(bu)斷抄起、散落呈螺旋行(xing)進式(shi)實(shi)現熱交換(huan)，物(wu)(wu)料(liao)移動至內(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)的另(ling)一端進入(ru)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)，進行(xing)逆流烘干(gan)，物(wu)(wu)料(liao)在(zai)(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)不(bu)斷地被反復揚進，呈進兩(liang)步退一步的行(xing)進方式(shi)，物(wu)(wu)料(liao)在(zai)(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)既充分吸(xi)(xi)收內(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)散發的熱量(liang)，又(you)吸(xi)(xi)收中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)的熱量(liang)，同時(shi)又(you)延長了干(gan)燥(zao)(zao)時(shi)間，物(wu)(wu)料(liao)在(zai)(zai)(zai)此達到(dao)干(gan)燥(zao)(zao)狀態。物(wu)(wu)料(liao)行(xing)至中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)另(ling)一端而落入(ru)外層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)，物(wu)(wu)料(liao)在(zai)(zai)(zai)外層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)內(nei)呈矩(ju)形(xing)多回路(lu)方式(shi)行(xing)進，達到(dao)干(gan)燥(zao)(zao)效果的物(wu)(wu)料(liao)在(zai)(zai)(zai)熱風作用下(xia)快速行(xing)進排出滾(gun)筒(tong)，沒有(you)達到(dao)干(gan)燥(zao)(zao)效果的濕(shi)物(wu)(wu)料(liao)因(yin)自重而不(bu)能快速行(xing)進，物(wu)(wu)料(liao)在(zai)(zai)(zai)此矩(ju)形(xing)抄板內(nei)進行(xing)充分干(gan)燥(zao)(zao)，由此達到(dao)干(gan)燥(zao)(zao)效果，完成干(gan)燥(zao)(zao)過程。

設備特點

該(gai)設備與其他(ta)干燥設備相(xiang)比，生(sheng)產能力大，可連續操(cao)(cao)作(zuo)； 結構簡單，操(cao)(cao)作(zuo)方便；故障少，維修(xiu)費(fei)用低；適用范圍廣，流(liu)(liu)體阻力小，可以用它干燥顆(ke)料(liao)狀物料(liao)，對于那(nei)些(xie)附著性(xing)大的(de)物料(liao)也很有(you)(you)利；操(cao)(cao)作(zuo)彈性(xing)大，生(sheng)產上允許產品的(de)流(liu)(liu)量有(you)(you)較大波動范圍，不會(hui)影(ying)響產品的(de)質量；清掃容(rong)易。