煤(mei)粉(fen)灰(hui)烘干機是(shi)煤(mei)粉(fen)經高溫燃燒后形成(cheng)的一種(zhong)似火山灰(hui)質(zhi)混合材料。

它(ta)是燃燒(shao)煤的發電廠將煤磨成100微(wei)米以下的煤粉(fen)，用預熱空(kong)氣噴入爐膛經燃燒(shao)形(xing)成懸浮狀(zhuang)態，產生混雜有大量不燃物(wu)的高溫(wen)煙氣，經集(ji)塵(chen)裝置捕集(ji)就得到了粉(fen)煤灰。粉(fen)煤灰的化學組成與(yu)粘土質(zhi)相似，主要成分為二氧(yang)化硅、三氧(yang)化二鋁、三氧(yang)化二鐵、氧(yang)化鈣(gai)和未燃盡碳。

工作(zuo)原理

濕粉煤(mei)灰由(you)供(gong)料(liao)(liao)(liao)(liao)裝置進(jin)(jin)入三層(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)的內(nei)層(ceng)(ceng)(ceng)(ceng),實(shi)現順流(liu)烘干(gan)(gan), 粉煤(mei)灰在(zai)(zai)內(nei)層(ceng)(ceng)(ceng)(ceng)的抄板下不斷抄起、散(san)落呈螺旋行(xing)(xing)(xing)進(jin)(jin)式(shi)實(shi)現熱(re)交(jiao)換(huan)，物(wu)料(liao)(liao)(liao)(liao)移動至(zhi)內(nei)層(ceng)(ceng)(ceng)(ceng)的另一(yi)端進(jin)(jin)入中(zhong)層(ceng)(ceng)(ceng)(ceng)，進(jin)(jin)行(xing)(xing)(xing)逆流(liu)烘干(gan)(gan)，物(wu)料(liao)(liao)(liao)(liao)在(zai)(zai)中(zhong)層(ceng)(ceng)(ceng)(ceng)不斷地被(bei)反復揚進(jin)(jin)，呈進(jin)(jin)兩步退一(yi)步的行(xing)(xing)(xing)進(jin)(jin)方(fang)式(shi)，物(wu)料(liao)(liao)(liao)(liao)在(zai)(zai)中(zhong)層(ceng)(ceng)(ceng)(ceng)既充分吸收內(nei)層(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)散(san)發的熱(re)量，又吸收中(zhong)層(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)的熱(re)量，同(tong)時又延長了干(gan)(gan)燥(zao)(zao)時間，物(wu)料(liao)(liao)(liao)(liao)在(zai)(zai)此達到(dao)干(gan)(gan)燥(zao)(zao)狀態(tai)。物(wu)料(liao)(liao)(liao)(liao)行(xing)(xing)(xing)至(zhi)中(zhong)層(ceng)(ceng)(ceng)(ceng)另一(yi)端而落入外層(ceng)(ceng)(ceng)(ceng)，物(wu)料(liao)(liao)(liao)(liao)在(zai)(zai)外層(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)內(nei)呈矩形多回路方(fang)式(shi)行(xing)(xing)(xing)進(jin)(jin)，達到(dao)干(gan)(gan)燥(zao)(zao)效(xiao)(xiao)果(guo)的物(wu)料(liao)(liao)(liao)(liao)在(zai)(zai)熱(re)風作用下快速(su)行(xing)(xing)(xing)進(jin)(jin)排出滾(gun)筒(tong)(tong)，沒有達到(dao)干(gan)(gan)燥(zao)(zao)效(xiao)(xiao)果(guo)的濕物(wu)料(liao)(liao)(liao)(liao)因自重而不能(neng)快速(su)行(xing)(xing)(xing)進(jin)(jin)，物(wu)料(liao)(liao)(liao)(liao)在(zai)(zai)此矩形抄板內(nei)進(jin)(jin)行(xing)(xing)(xing)充分干(gan)(gan)燥(zao)(zao)，由(you)此達到(dao)干(gan)(gan)燥(zao)(zao)效(xiao)(xiao)果(guo)，完成干(gan)(gan)燥(zao)(zao)過程。

設(she)備特點(dian)

該(gai)設備與其他干燥(zao)設備相比，生產能力(li)大(da)(da)，可連續操作； 結構簡單(dan)，操作方便(bian)；故障少，維修費用(yong)低；適用(yong)范圍廣，流體阻力(li)小，可以用(yong)它(ta)干燥(zao)顆料狀物(wu)料，對于那些附著(zhu)性大(da)(da)的物(wu)料也很有利；操作彈性大(da)(da)，生產上允(yun)許產品的流量有較(jiao)大(da)(da)波動范圍，不會影響(xiang)產品的質量；清掃容易。