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(shao)煤(mei)(mei)的發電(dian)廠(chang)將煤(mei)(mei)磨成(cheng)100微米以下(xia)的煤(mei)(mei)粉(fen)，用預熱(re)空氣噴入爐(lu)膛經(jing)燃燒(shao)形成(cheng)懸(xuan)浮狀態，產(chan)生混雜(za)有大量不燃物的高溫煙(yan)氣，經(jing)集塵裝(zhuang)置捕集就得到了(le)粉(fen)煤(mei)(mei)灰。粉(fen)煤(mei)(mei)灰的化(hua)(hua)(hua)學組成(cheng)與粘土質相(xiang)似(si)，主要成(cheng)分為二氧化(hua)(hua)(hua)硅、三(san)氧化(hua)(hua)(hua)二鋁、三(san)氧化(hua)(hua)(hua)二鐵、氧化(hua)(hua)(hua)鈣(gai)和未燃盡碳(tan)。

工作原理

濕(shi)粉煤灰由供料(liao)裝置進入(ru)三(san)層(ceng)(ceng)(ceng)(ceng)滾筒(tong)(tong)(tong)的(de)(de)內(nei)層(ceng)(ceng)(ceng)(ceng),實(shi)現順流烘干(gan)(gan), 粉煤灰在(zai)(zai)內(nei)層(ceng)(ceng)(ceng)(ceng)的(de)(de)抄(chao)板下不(bu)斷(duan)抄(chao)起(qi)、散(san)落呈(cheng)(cheng)螺旋(xuan)行(xing)(xing)進式實(shi)現熱(re)交換，物(wu)料(liao)移動至內(nei)層(ceng)(ceng)(ceng)(ceng)的(de)(de)另一(yi)端(duan)進入(ru)中(zhong)(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)，進行(xing)(xing)逆流烘干(gan)(gan)，物(wu)料(liao)在(zai)(zai)中(zhong)(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)不(bu)斷(duan)地被(bei)反復揚(yang)進，呈(cheng)(cheng)進兩步退一(yi)步的(de)(de)行(xing)(xing)進方(fang)式，物(wu)料(liao)在(zai)(zai)中(zhong)(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)既(ji)充分吸(xi)收內(nei)層(ceng)(ceng)(ceng)(ceng)滾筒(tong)(tong)(tong)散(san)發的(de)(de)熱(re)量，又(you)吸(xi)收中(zhong)(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)滾筒(tong)(tong)(tong)的(de)(de)熱(re)量，同(tong)時(shi)又(you)延長了干(gan)(gan)燥(zao)(zao)(zao)時(shi)間(jian)，物(wu)料(liao)在(zai)(zai)此達(da)(da)到(dao)(dao)干(gan)(gan)燥(zao)(zao)(zao)狀態。物(wu)料(liao)行(xing)(xing)至中(zhong)(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)另一(yi)端(duan)而(er)落入(ru)外層(ceng)(ceng)(ceng)(ceng)，物(wu)料(liao)在(zai)(zai)外層(ceng)(ceng)(ceng)(ceng)滾筒(tong)(tong)(tong)內(nei)呈(cheng)(cheng)矩形(xing)多回路方(fang)式行(xing)(xing)進，達(da)(da)到(dao)(dao)干(gan)(gan)燥(zao)(zao)(zao)效果的(de)(de)物(wu)料(liao)在(zai)(zai)熱(re)風作用下快速(su)行(xing)(xing)進排出(chu)滾筒(tong)(tong)(tong)，沒有達(da)(da)到(dao)(dao)干(gan)(gan)燥(zao)(zao)(zao)效果的(de)(de)濕(shi)物(wu)料(liao)因自(zi)重(zhong)而(er)不(bu)能(neng)快速(su)行(xing)(xing)進，物(wu)料(liao)在(zai)(zai)此矩形(xing)抄(chao)板內(nei)進行(xing)(xing)充分干(gan)(gan)燥(zao)(zao)(zao)，由此達(da)(da)到(dao)(dao)干(gan)(gan)燥(zao)(zao)(zao)效果，完成(cheng)干(gan)(gan)燥(zao)(zao)(zao)過程。

設備特點(dian)

該(gai)設備與(yu)其(qi)他干(gan)(gan)燥(zao)設備相比，生產(chan)能力(li)大(da)，可連續操(cao)作； 結構簡單，操(cao)作方便(bian)；故障少，維修費用低；適用范圍廣(guang)，流(liu)體阻力(li)小，可以用它干(gan)(gan)燥(zao)顆(ke)料(liao)狀物料(liao)，對(dui)于(yu)那(nei)些附著性大(da)的(de)物料(liao)也很有利；操(cao)作彈性大(da)，生產(chan)上允許(xu)產(chan)品的(de)流(liu)量有較大(da)波動(dong)范圍，不(bu)會(hui)影響(xiang)產(chan)品的(de)質量；清掃容易。