煤(mei)粉(fen)灰(hui)(hui)烘干機是煤(mei)粉(fen)經高溫燃燒(shao)后形成的(de)一種似火山灰(hui)(hui)質混合材料。

它是燃燒(shao)煤(mei)的發電廠將煤(mei)磨(mo)成100微米以下的煤(mei)粉(fen)，用預熱空(kong)氣噴入(ru)爐膛經(jing)燃燒(shao)形成懸浮狀態(tai)，產生混雜有大量不燃物(wu)的高(gao)溫煙氣，經(jing)集塵裝置捕集就得(de)到(dao)了粉(fen)煤(mei)灰。粉(fen)煤(mei)灰的化(hua)學組成與(yu)粘土質(zhi)相似，主要成分為(wei)二氧(yang)化(hua)硅、三氧(yang)化(hua)二鋁、三氧(yang)化(hua)二鐵、氧(yang)化(hua)鈣和未燃盡(jin)碳。

工(gong)作(zuo)原理

濕(shi)(shi)粉煤灰由供料(liao)(liao)(liao)(liao)裝置進(jin)(jin)(jin)(jin)入(ru)(ru)(ru)三層(ceng)(ceng)滾筒(tong)(tong)的(de)內(nei)層(ceng)(ceng),實現順流烘干(gan), 粉煤灰在(zai)(zai)(zai)內(nei)層(ceng)(ceng)的(de)抄板下不斷抄起、散(san)落呈螺旋行(xing)(xing)(xing)(xing)進(jin)(jin)(jin)(jin)式實現熱交(jiao)換，物(wu)(wu)料(liao)(liao)(liao)(liao)移動(dong)至(zhi)內(nei)層(ceng)(ceng)的(de)另一(yi)端進(jin)(jin)(jin)(jin)入(ru)(ru)(ru)中(zhong)(zhong)層(ceng)(ceng)，進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)逆流烘干(gan)，物(wu)(wu)料(liao)(liao)(liao)(liao)在(zai)(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)不斷地(di)被反復揚進(jin)(jin)(jin)(jin)，呈進(jin)(jin)(jin)(jin)兩(liang)步(bu)退一(yi)步(bu)的(de)行(xing)(xing)(xing)(xing)進(jin)(jin)(jin)(jin)方(fang)式，物(wu)(wu)料(liao)(liao)(liao)(liao)在(zai)(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)既充分(fen)吸(xi)收(shou)內(nei)層(ceng)(ceng)滾筒(tong)(tong)散(san)發的(de)熱量，又(you)吸(xi)收(shou)中(zhong)(zhong)層(ceng)(ceng)滾筒(tong)(tong)的(de)熱量，同(tong)時又(you)延長(chang)了(le)干(gan)燥(zao)(zao)時間，物(wu)(wu)料(liao)(liao)(liao)(liao)在(zai)(zai)(zai)此(ci)達(da)到(dao)干(gan)燥(zao)(zao)狀態。物(wu)(wu)料(liao)(liao)(liao)(liao)行(xing)(xing)(xing)(xing)至(zhi)中(zhong)(zhong)層(ceng)(ceng)另一(yi)端而(er)落入(ru)(ru)(ru)外(wai)層(ceng)(ceng)，物(wu)(wu)料(liao)(liao)(liao)(liao)在(zai)(zai)(zai)外(wai)層(ceng)(ceng)滾筒(tong)(tong)內(nei)呈矩形(xing)多回路方(fang)式行(xing)(xing)(xing)(xing)進(jin)(jin)(jin)(jin)，達(da)到(dao)干(gan)燥(zao)(zao)效(xiao)果(guo)的(de)物(wu)(wu)料(liao)(liao)(liao)(liao)在(zai)(zai)(zai)熱風作(zuo)用下快速行(xing)(xing)(xing)(xing)進(jin)(jin)(jin)(jin)排出(chu)滾筒(tong)(tong)，沒有達(da)到(dao)干(gan)燥(zao)(zao)效(xiao)果(guo)的(de)濕(shi)(shi)物(wu)(wu)料(liao)(liao)(liao)(liao)因(yin)自重而(er)不能快速行(xing)(xing)(xing)(xing)進(jin)(jin)(jin)(jin)，物(wu)(wu)料(liao)(liao)(liao)(liao)在(zai)(zai)(zai)此(ci)矩形(xing)抄板內(nei)進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)充分(fen)干(gan)燥(zao)(zao)，由此(ci)達(da)到(dao)干(gan)燥(zao)(zao)效(xiao)果(guo)，完(wan)成干(gan)燥(zao)(zao)過程。

設(she)備特點

該設(she)備與(yu)其他干(gan)燥設(she)備相比，生產能(neng)力大，可連續操(cao)作； 結構簡單(dan)，操(cao)作方便；故障少，維修費用低(di)；適用范圍廣(guang)，流體(ti)阻力小，可以用它干(gan)燥顆料狀(zhuang)物料，對于(yu)那些附(fu)著性大的(de)(de)物料也很有(you)利；操(cao)作彈性大，生產上允許產品的(de)(de)流量有(you)較大波動(dong)范圍，不會影響產品的(de)(de)質量；清(qing)掃容易。