煤粉(fen)灰(hui)烘干機是煤粉(fen)經高(gao)溫燃(ran)燒后(hou)形成(cheng)的一種似火山灰(hui)質混合材料。

它是燃(ran)(ran)(ran)燒煤(mei)的發電廠將煤(mei)磨成(cheng)100微(wei)米(mi)以下的煤(mei)粉，用預(yu)熱(re)空氣噴入爐膛經燃(ran)(ran)(ran)燒形成(cheng)懸(xuan)浮狀態，產生混雜有大量不燃(ran)(ran)(ran)物的高(gao)溫煙氣，經集塵裝置捕集就得到(dao)了粉煤(mei)灰(hui)。粉煤(mei)灰(hui)的化學組成(cheng)與粘土質相似，主(zhu)要成(cheng)分為二氧(yang)化硅、三氧(yang)化二鋁、三氧(yang)化二鐵、氧(yang)化鈣和未燃(ran)(ran)(ran)盡(jin)碳。

工作原(yuan)理(li)

濕粉(fen)煤灰由供料(liao)(liao)(liao)裝置進(jin)(jin)(jin)(jin)入(ru)三層(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)(gun)筒的內層(ceng)(ceng)(ceng)(ceng)(ceng),實現順流(liu)烘干(gan), 粉(fen)煤灰在(zai)(zai)(zai)(zai)內層(ceng)(ceng)(ceng)(ceng)(ceng)的抄(chao)板下不(bu)(bu)斷抄(chao)起(qi)、散落呈(cheng)螺旋行(xing)進(jin)(jin)(jin)(jin)式(shi)(shi)(shi)實現熱(re)交換，物(wu)(wu)料(liao)(liao)(liao)移(yi)動至內層(ceng)(ceng)(ceng)(ceng)(ceng)的另一端進(jin)(jin)(jin)(jin)入(ru)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)，進(jin)(jin)(jin)(jin)行(xing)逆流(liu)烘干(gan)，物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)不(bu)(bu)斷地(di)被反復揚進(jin)(jin)(jin)(jin)，呈(cheng)進(jin)(jin)(jin)(jin)兩步退一步的行(xing)進(jin)(jin)(jin)(jin)方式(shi)(shi)(shi)，物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)既充(chong)分吸(xi)收內層(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)(gun)筒散發(fa)的熱(re)量，又吸(xi)收中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)(gun)筒的熱(re)量，同時又延長了干(gan)燥(zao)時間，物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)(zai)(zai)此(ci)(ci)(ci)達(da)(da)到(dao)干(gan)燥(zao)狀(zhuang)態。物(wu)(wu)料(liao)(liao)(liao)行(xing)至中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)另一端而落入(ru)外(wai)(wai)層(ceng)(ceng)(ceng)(ceng)(ceng)，物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)(zai)(zai)外(wai)(wai)層(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)(gun)筒內呈(cheng)矩(ju)形多(duo)回路方式(shi)(shi)(shi)行(xing)進(jin)(jin)(jin)(jin)，達(da)(da)到(dao)干(gan)燥(zao)效果(guo)的物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)(zai)(zai)熱(re)風作(zuo)用下快速行(xing)進(jin)(jin)(jin)(jin)排(pai)出滾(gun)(gun)筒，沒有(you)達(da)(da)到(dao)干(gan)燥(zao)效果(guo)的濕物(wu)(wu)料(liao)(liao)(liao)因自重而不(bu)(bu)能(neng)快速行(xing)進(jin)(jin)(jin)(jin)，物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)(zai)(zai)此(ci)(ci)(ci)矩(ju)形抄(chao)板內進(jin)(jin)(jin)(jin)行(xing)充(chong)分干(gan)燥(zao)，由此(ci)(ci)(ci)達(da)(da)到(dao)干(gan)燥(zao)效果(guo)，完成干(gan)燥(zao)過程。

設(she)備特點

該設備與其他干燥(zao)設備相比，生產(chan)能力大，可連(lian)續操作(zuo)； 結構簡單(dan)，操作(zuo)方便；故(gu)障少，維修費用(yong)低；適用(yong)范圍廣，流體阻力小，可以用(yong)它干燥(zao)顆(ke)料狀(zhuang)物料，對(dui)于那些(xie)附著性(xing)(xing)大的物料也(ye)很(hen)有利；操作(zuo)彈性(xing)(xing)大，生產(chan)上允(yun)許產(chan)品(pin)的流量(liang)有較大波動范圍，不會(hui)影響產(chan)品(pin)的質量(liang)；清掃容易。