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(mei)(mei)的發電廠(chang)將(jiang)煤(mei)(mei)磨成100微(wei)米以下的煤(mei)(mei)粉，用預熱空(kong)氣噴入爐膛(tang)經燃燒形成懸(xuan)浮狀態，產生混雜有大量不燃物(wu)的高(gao)溫(wen)煙(yan)氣，經集塵(chen)裝置捕(bu)集就得到了粉煤(mei)(mei)灰。粉煤(mei)(mei)灰的化(hua)學(xue)組成與粘土質(zhi)相(xiang)似，主要(yao)成分(fen)為(wei)二(er)氧(yang)(yang)化(hua)硅(gui)、三氧(yang)(yang)化(hua)二(er)鋁、三氧(yang)(yang)化(hua)二(er)鐵、氧(yang)(yang)化(hua)鈣和未燃盡碳。

工作原理

濕粉煤灰由供料(liao)(liao)(liao)裝(zhuang)置進(jin)(jin)(jin)入三層(ceng)(ceng)滾(gun)(gun)(gun)筒(tong)的內層(ceng)(ceng),實現(xian)順(shun)流(liu)烘(hong)干(gan)(gan)(gan)(gan), 粉煤灰在(zai)(zai)內層(ceng)(ceng)的抄(chao)板(ban)(ban)下不斷抄(chao)起、散落呈螺旋行(xing)(xing)(xing)(xing)進(jin)(jin)(jin)式(shi)(shi)實現(xian)熱(re)(re)交換(huan)，物(wu)(wu)料(liao)(liao)(liao)移動至內層(ceng)(ceng)的另一端(duan)(duan)進(jin)(jin)(jin)入中(zhong)(zhong)層(ceng)(ceng)，進(jin)(jin)(jin)行(xing)(xing)(xing)(xing)逆流(liu)烘(hong)干(gan)(gan)(gan)(gan)，物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)不斷地(di)被(bei)反復揚(yang)進(jin)(jin)(jin)，呈進(jin)(jin)(jin)兩步(bu)退一步(bu)的行(xing)(xing)(xing)(xing)進(jin)(jin)(jin)方式(shi)(shi)，物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)既(ji)充分吸收(shou)內層(ceng)(ceng)滾(gun)(gun)(gun)筒(tong)散發的熱(re)(re)量，又吸收(shou)中(zhong)(zhong)層(ceng)(ceng)滾(gun)(gun)(gun)筒(tong)的熱(re)(re)量，同時又延長(chang)了(le)干(gan)(gan)(gan)(gan)燥(zao)時間(jian)，物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)此(ci)達(da)到(dao)干(gan)(gan)(gan)(gan)燥(zao)狀態。物(wu)(wu)料(liao)(liao)(liao)行(xing)(xing)(xing)(xing)至中(zhong)(zhong)層(ceng)(ceng)另一端(duan)(duan)而(er)落入外層(ceng)(ceng)，物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)外層(ceng)(ceng)滾(gun)(gun)(gun)筒(tong)內呈矩形多回路方式(shi)(shi)行(xing)(xing)(xing)(xing)進(jin)(jin)(jin)，達(da)到(dao)干(gan)(gan)(gan)(gan)燥(zao)效(xiao)果的物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)熱(re)(re)風作用下快速行(xing)(xing)(xing)(xing)進(jin)(jin)(jin)排出(chu)滾(gun)(gun)(gun)筒(tong)，沒有達(da)到(dao)干(gan)(gan)(gan)(gan)燥(zao)效(xiao)果的濕物(wu)(wu)料(liao)(liao)(liao)因自重而(er)不能(neng)快速行(xing)(xing)(xing)(xing)進(jin)(jin)(jin)，物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)此(ci)矩形抄(chao)板(ban)(ban)內進(jin)(jin)(jin)行(xing)(xing)(xing)(xing)充分干(gan)(gan)(gan)(gan)燥(zao)，由此(ci)達(da)到(dao)干(gan)(gan)(gan)(gan)燥(zao)效(xiao)果，完成干(gan)(gan)(gan)(gan)燥(zao)過程。

設備特點(dian)

該(gai)設備(bei)與其他干燥設備(bei)相比，生(sheng)產(chan)(chan)能(neng)力(li)大，可(ke)連(lian)續操(cao)作(zuo)； 結構簡單，操(cao)作(zuo)方便(bian)；故障少，維修費用(yong)低(di)；適用(yong)范(fan)圍廣，流體阻力(li)小，可(ke)以用(yong)它干燥顆料狀(zhuang)物料，對(dui)于那些附著性大的(de)(de)物料也很有利；操(cao)作(zuo)彈性大，生(sheng)產(chan)(chan)上允(yun)許產(chan)(chan)品的(de)(de)流量有較大波動(dong)范(fan)圍，不會影響(xiang)產(chan)(chan)品的(de)(de)質(zhi)量；清(qing)掃容(rong)易。