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(ta)是燃燒煤的發電廠將(jiang)煤磨成100微米(mi)以下(xia)的煤粉(fen)，用預熱空(kong)氣噴入爐膛經燃燒形成懸浮狀態(tai)，產生混雜有(you)大量(liang)不燃物(wu)的高(gao)溫煙(yan)氣，經集塵裝置捕集就得到了(le)粉(fen)煤灰(hui)(hui)。粉(fen)煤灰(hui)(hui)的化(hua)(hua)學(xue)組成與粘土質相似(si)，主要成分為二(er)氧(yang)化(hua)(hua)硅、三氧(yang)化(hua)(hua)二(er)鋁、三氧(yang)化(hua)(hua)二(er)鐵、氧(yang)化(hua)(hua)鈣(gai)和未燃盡碳。

工作原理

濕粉(fen)(fen)煤(mei)灰(hui)由(you)供料(liao)(liao)(liao)(liao)裝置進(jin)(jin)入(ru)(ru)三層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)的(de)(de)內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng),實現(xian)順流烘(hong)干(gan), 粉(fen)(fen)煤(mei)灰(hui)在內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)的(de)(de)抄(chao)板下(xia)不斷抄(chao)起(qi)、散(san)落(luo)呈螺(luo)旋行(xing)(xing)進(jin)(jin)式實現(xian)熱(re)交(jiao)換，物(wu)(wu)(wu)料(liao)(liao)(liao)(liao)移動至內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)的(de)(de)另一端進(jin)(jin)入(ru)(ru)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)，進(jin)(jin)行(xing)(xing)逆流烘(hong)干(gan)，物(wu)(wu)(wu)料(liao)(liao)(liao)(liao)在中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)不斷地被反(fan)復揚進(jin)(jin)，呈進(jin)(jin)兩步退(tui)一步的(de)(de)行(xing)(xing)進(jin)(jin)方(fang)式，物(wu)(wu)(wu)料(liao)(liao)(liao)(liao)在中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)既充分(fen)吸收內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)散(san)發的(de)(de)熱(re)量(liang)，又(you)吸收中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)的(de)(de)熱(re)量(liang)，同時(shi)又(you)延長了干(gan)燥時(shi)間，物(wu)(wu)(wu)料(liao)(liao)(liao)(liao)在此(ci)達(da)(da)(da)到(dao)干(gan)燥狀(zhuang)態。物(wu)(wu)(wu)料(liao)(liao)(liao)(liao)行(xing)(xing)至中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)另一端而(er)落(luo)入(ru)(ru)外層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)，物(wu)(wu)(wu)料(liao)(liao)(liao)(liao)在外層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)內(nei)(nei)呈矩形(xing)多回路方(fang)式行(xing)(xing)進(jin)(jin)，達(da)(da)(da)到(dao)干(gan)燥效(xiao)果的(de)(de)物(wu)(wu)(wu)料(liao)(liao)(liao)(liao)在熱(re)風作用下(xia)快速行(xing)(xing)進(jin)(jin)排出滾(gun)筒(tong)(tong)，沒有達(da)(da)(da)到(dao)干(gan)燥效(xiao)果的(de)(de)濕物(wu)(wu)(wu)料(liao)(liao)(liao)(liao)因自重而(er)不能快速行(xing)(xing)進(jin)(jin)，物(wu)(wu)(wu)料(liao)(liao)(liao)(liao)在此(ci)矩形(xing)抄(chao)板內(nei)(nei)進(jin)(jin)行(xing)(xing)充分(fen)干(gan)燥，由(you)此(ci)達(da)(da)(da)到(dao)干(gan)燥效(xiao)果，完(wan)成干(gan)燥過程。

設備(bei)特(te)點

該設備(bei)(bei)與(yu)其(qi)他干燥(zao)設備(bei)(bei)相比，生(sheng)產能(neng)力大，可連續操(cao)作； 結(jie)構簡單(dan)，操(cao)作方便；故障少，維修費用低；適用范圍廣，流體阻力小(xiao)，可以用它干燥(zao)顆料狀物料，對(dui)于那些附(fu)著性(xing)大的(de)物料也很(hen)有利(li)；操(cao)作彈(dan)性(xing)大，生(sheng)產上允許產品的(de)流量有較大波動(dong)范圍，不(bu)會影(ying)響產品的(de)質量；清(qing)掃容易。