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(ran)燒(shao)(shao)煤(mei)的發電廠(chang)將(jiang)煤(mei)磨成100微米以下的煤(mei)粉，用(yong)預(yu)熱空氣(qi)(qi)噴入爐膛經(jing)燃(ran)燒(shao)(shao)形成懸浮狀態，產生混雜有大量不燃(ran)物(wu)的高溫煙氣(qi)(qi)，經(jing)集塵裝(zhuang)置(zhi)捕集就得到了粉煤(mei)灰。粉煤(mei)灰的化(hua)(hua)學(xue)組成與粘土質相(xiang)似，主要(yao)成分為二氧(yang)(yang)化(hua)(hua)硅(gui)、三氧(yang)(yang)化(hua)(hua)二鋁、三氧(yang)(yang)化(hua)(hua)二鐵、氧(yang)(yang)化(hua)(hua)鈣和未燃(ran)盡碳。

工作原理

濕(shi)粉煤灰由供(gong)料(liao)裝置進(jin)入三層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)(gun)(gun)筒(tong)的(de)內(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng),實現(xian)順流烘干, 粉煤灰在(zai)內(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)的(de)抄(chao)板下不斷(duan)抄(chao)起(qi)、散落(luo)呈(cheng)螺旋行(xing)(xing)(xing)進(jin)式(shi)實現(xian)熱(re)交換，物(wu)(wu)(wu)料(liao)移動(dong)至內(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)的(de)另(ling)一端(duan)進(jin)入中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)，進(jin)行(xing)(xing)(xing)逆流烘干，物(wu)(wu)(wu)料(liao)在(zai)中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)不斷(duan)地被反復揚進(jin)，呈(cheng)進(jin)兩步退一步的(de)行(xing)(xing)(xing)進(jin)方式(shi)，物(wu)(wu)(wu)料(liao)在(zai)中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)既充分吸收內(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)(gun)(gun)筒(tong)散發(fa)的(de)熱(re)量(liang)(liang)，又吸收中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)(gun)(gun)筒(tong)的(de)熱(re)量(liang)(liang)，同時又延長了干燥(zao)時間，物(wu)(wu)(wu)料(liao)在(zai)此(ci)達(da)(da)(da)到(dao)干燥(zao)狀(zhuang)態。物(wu)(wu)(wu)料(liao)行(xing)(xing)(xing)至中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)另(ling)一端(duan)而(er)落(luo)入外層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)，物(wu)(wu)(wu)料(liao)在(zai)外層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)(gun)(gun)筒(tong)內(nei)呈(cheng)矩形(xing)多回路方式(shi)行(xing)(xing)(xing)進(jin)，達(da)(da)(da)到(dao)干燥(zao)效(xiao)果(guo)的(de)物(wu)(wu)(wu)料(liao)在(zai)熱(re)風作用下快(kuai)速行(xing)(xing)(xing)進(jin)排出滾(gun)(gun)(gun)筒(tong)，沒有達(da)(da)(da)到(dao)干燥(zao)效(xiao)果(guo)的(de)濕(shi)物(wu)(wu)(wu)料(liao)因自重而(er)不能快(kuai)速行(xing)(xing)(xing)進(jin)，物(wu)(wu)(wu)料(liao)在(zai)此(ci)矩形(xing)抄(chao)板內(nei)進(jin)行(xing)(xing)(xing)充分干燥(zao)，由此(ci)達(da)(da)(da)到(dao)干燥(zao)效(xiao)果(guo)，完成干燥(zao)過(guo)程。

設備特點

該設備(bei)與其他干燥設備(bei)相比(bi)，生(sheng)產能(neng)力(li)大(da)，可連續操(cao)作(zuo)(zuo)； 結構簡單，操(cao)作(zuo)(zuo)方便；故障少，維修費(fei)用低；適用范圍(wei)(wei)廣，流(liu)體阻力(li)小，可以用它干燥顆料(liao)(liao)狀物(wu)料(liao)(liao)，對于那些附著性大(da)的物(wu)料(liao)(liao)也很有利；操(cao)作(zuo)(zuo)彈性大(da)，生(sheng)產上(shang)允(yun)許產品的流(liu)量有較大(da)波動范圍(wei)(wei)，不會影響產品的質量；清掃容易。