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)的發電(dian)廠將煤(mei)磨成(cheng)(cheng)(cheng)100微(wei)米以(yi)下的煤(mei)粉，用預熱空氣(qi)噴入(ru)爐膛經燃燒(shao)形成(cheng)(cheng)(cheng)懸浮(fu)狀態，產(chan)生混雜有大量不燃物的高溫煙氣(qi)，經集塵裝(zhuang)置捕(bu)集就(jiu)得到了粉煤(mei)灰。粉煤(mei)灰的化(hua)(hua)學(xue)組成(cheng)(cheng)(cheng)與粘土質相似，主要成(cheng)(cheng)(cheng)分(fen)為二(er)氧(yang)化(hua)(hua)硅、三氧(yang)化(hua)(hua)二(er)鋁(lv)、三氧(yang)化(hua)(hua)二(er)鐵(tie)、氧(yang)化(hua)(hua)鈣(gai)和未燃盡碳。

工作(zuo)原理

濕(shi)粉煤(mei)灰由供(gong)料裝置進(jin)(jin)(jin)(jin)(jin)入(ru)三層(ceng)(ceng)(ceng)滾(gun)(gun)筒(tong)(tong)(tong)的(de)內層(ceng)(ceng)(ceng),實(shi)(shi)現(xian)(xian)順(shun)流烘(hong)干(gan)(gan)(gan), 粉煤(mei)灰在(zai)(zai)內層(ceng)(ceng)(ceng)的(de)抄板下不(bu)斷(duan)抄起、散落呈(cheng)螺(luo)旋(xuan)行(xing)(xing)進(jin)(jin)(jin)(jin)(jin)式實(shi)(shi)現(xian)(xian)熱交換，物(wu)料移(yi)動至內層(ceng)(ceng)(ceng)的(de)另一端(duan)進(jin)(jin)(jin)(jin)(jin)入(ru)中(zhong)層(ceng)(ceng)(ceng)，進(jin)(jin)(jin)(jin)(jin)行(xing)(xing)逆流烘(hong)干(gan)(gan)(gan)，物(wu)料在(zai)(zai)中(zhong)層(ceng)(ceng)(ceng)不(bu)斷(duan)地(di)被反復揚進(jin)(jin)(jin)(jin)(jin)，呈(cheng)進(jin)(jin)(jin)(jin)(jin)兩(liang)步退一步的(de)行(xing)(xing)進(jin)(jin)(jin)(jin)(jin)方(fang)式，物(wu)料在(zai)(zai)中(zhong)層(ceng)(ceng)(ceng)既充分(fen)吸收內層(ceng)(ceng)(ceng)滾(gun)(gun)筒(tong)(tong)(tong)散發(fa)的(de)熱量(liang)，又吸收中(zhong)層(ceng)(ceng)(ceng)滾(gun)(gun)筒(tong)(tong)(tong)的(de)熱量(liang)，同時(shi)又延長了干(gan)(gan)(gan)燥(zao)(zao)時(shi)間(jian)，物(wu)料在(zai)(zai)此(ci)達(da)(da)到干(gan)(gan)(gan)燥(zao)(zao)狀態。物(wu)料行(xing)(xing)至中(zhong)層(ceng)(ceng)(ceng)另一端(duan)而(er)落入(ru)外層(ceng)(ceng)(ceng)，物(wu)料在(zai)(zai)外層(ceng)(ceng)(ceng)滾(gun)(gun)筒(tong)(tong)(tong)內呈(cheng)矩形多回路方(fang)式行(xing)(xing)進(jin)(jin)(jin)(jin)(jin)，達(da)(da)到干(gan)(gan)(gan)燥(zao)(zao)效(xiao)(xiao)果的(de)物(wu)料在(zai)(zai)熱風(feng)作用下快(kuai)速(su)行(xing)(xing)進(jin)(jin)(jin)(jin)(jin)排出滾(gun)(gun)筒(tong)(tong)(tong)，沒有(you)達(da)(da)到干(gan)(gan)(gan)燥(zao)(zao)效(xiao)(xiao)果的(de)濕(shi)物(wu)料因自(zi)重(zhong)而(er)不(bu)能快(kuai)速(su)行(xing)(xing)進(jin)(jin)(jin)(jin)(jin)，物(wu)料在(zai)(zai)此(ci)矩形抄板內進(jin)(jin)(jin)(jin)(jin)行(xing)(xing)充分(fen)干(gan)(gan)(gan)燥(zao)(zao)，由此(ci)達(da)(da)到干(gan)(gan)(gan)燥(zao)(zao)效(xiao)(xiao)果，完成(cheng)干(gan)(gan)(gan)燥(zao)(zao)過程。

設備(bei)特點

該設備與(yu)其(qi)他(ta)干燥設備相比，生(sheng)產(chan)(chan)(chan)能力大(da)，可連續操(cao)作； 結構簡單，操(cao)作方便；故障少，維修費用(yong)低(di)；適(shi)用(yong)范圍廣，流體(ti)阻力小，可以用(yong)它干燥顆料狀物料，對于那些附著性大(da)的(de)物料也很有利；操(cao)作彈(dan)性大(da)，生(sheng)產(chan)(chan)(chan)上允許(xu)產(chan)(chan)(chan)品(pin)的(de)流量有較(jiao)大(da)波動范圍，不(bu)會影響產(chan)(chan)(chan)品(pin)的(de)質(zhi)量；清掃容易(yi)。