煤粉(fen)灰(hui)烘干機是煤粉(fen)經高溫燃燒后形(xing)成的一種似火山灰(hui)質混合材料。

它是燃燒(shao)(shao)煤的發電廠將(jiang)煤磨成(cheng)100微米以(yi)下的煤粉，用預熱空氣噴入爐膛經燃燒(shao)(shao)形成(cheng)懸浮狀(zhuang)態，產生混雜有大(da)量不燃物的高溫煙氣，經集塵裝置(zhi)捕集就得到了(le)粉煤灰。粉煤灰的化(hua)(hua)學組成(cheng)與(yu)粘土質(zhi)相似，主要(yao)成(cheng)分(fen)為二(er)氧化(hua)(hua)硅、三氧化(hua)(hua)二(er)鋁、三氧化(hua)(hua)二(er)鐵、氧化(hua)(hua)鈣和未燃盡(jin)碳。

工作原(yuan)理

濕粉煤灰(hui)由供料(liao)(liao)(liao)裝置進(jin)(jin)(jin)(jin)入(ru)三層(ceng)(ceng)(ceng)滾筒的內(nei)層(ceng)(ceng)(ceng),實現順(shun)流(liu)烘(hong)干, 粉煤灰(hui)在(zai)內(nei)層(ceng)(ceng)(ceng)的抄板下不(bu)斷抄起、散落呈(cheng)(cheng)螺旋行(xing)(xing)(xing)進(jin)(jin)(jin)(jin)式(shi)實現熱(re)交換，物(wu)(wu)(wu)料(liao)(liao)(liao)移動(dong)至內(nei)層(ceng)(ceng)(ceng)的另(ling)一(yi)端進(jin)(jin)(jin)(jin)入(ru)中層(ceng)(ceng)(ceng)，進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)逆流(liu)烘(hong)干，物(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)中層(ceng)(ceng)(ceng)不(bu)斷地被(bei)反(fan)復揚進(jin)(jin)(jin)(jin)，呈(cheng)(cheng)進(jin)(jin)(jin)(jin)兩步(bu)退一(yi)步(bu)的行(xing)(xing)(xing)進(jin)(jin)(jin)(jin)方式(shi)，物(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)中層(ceng)(ceng)(ceng)既充分吸(xi)收(shou)內(nei)層(ceng)(ceng)(ceng)滾筒散發的熱(re)量，又吸(xi)收(shou)中層(ceng)(ceng)(ceng)滾筒的熱(re)量，同(tong)時又延(yan)長了干燥(zao)(zao)時間，物(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)此達(da)到(dao)干燥(zao)(zao)狀態(tai)。物(wu)(wu)(wu)料(liao)(liao)(liao)行(xing)(xing)(xing)至中層(ceng)(ceng)(ceng)另(ling)一(yi)端而落入(ru)外層(ceng)(ceng)(ceng)，物(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)外層(ceng)(ceng)(ceng)滾筒內(nei)呈(cheng)(cheng)矩(ju)形多回路方式(shi)行(xing)(xing)(xing)進(jin)(jin)(jin)(jin)，達(da)到(dao)干燥(zao)(zao)效(xiao)果的物(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)熱(re)風作用下快(kuai)速行(xing)(xing)(xing)進(jin)(jin)(jin)(jin)排出滾筒，沒有(you)達(da)到(dao)干燥(zao)(zao)效(xiao)果的濕物(wu)(wu)(wu)料(liao)(liao)(liao)因自重而不(bu)能快(kuai)速行(xing)(xing)(xing)進(jin)(jin)(jin)(jin)，物(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)此矩(ju)形抄板內(nei)進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)充分干燥(zao)(zao)，由此達(da)到(dao)干燥(zao)(zao)效(xiao)果，完(wan)成干燥(zao)(zao)過程。

設備特(te)點

該設備與其他干(gan)燥設備相比，生(sheng)產能力大，可連續操(cao)作； 結構簡單，操(cao)作方便(bian)；故障少，維修(xiu)費用(yong)低；適用(yong)范(fan)圍(wei)廣(guang)，流體阻力小，可以用(yong)它干(gan)燥顆料狀物料，對于那些(xie)附著(zhu)性(xing)大的物料也很有利(li)；操(cao)作彈性(xing)大，生(sheng)產上允(yun)許產品的流量(liang)(liang)有較(jiao)大波動范(fan)圍(wei)，不會影響產品的質量(liang)(liang)；清(qing)掃容易(yi)。