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(de)發電(dian)廠(chang)將(jiang)煤磨成(cheng)100微(wei)米以下的(de)煤粉，用(yong)預熱空氣噴入爐膛經燃燒形成(cheng)懸浮狀態，產生(sheng)混(hun)雜有(you)大量(liang)不燃物的(de)高溫(wen)煙氣，經集塵裝置捕集就得到了粉煤灰(hui)。粉煤灰(hui)的(de)化學(xue)組成(cheng)與粘土質相(xiang)似，主要(yao)成(cheng)分(fen)為二氧化硅、三氧化二鋁、三氧化二鐵、氧化鈣和(he)未燃盡碳。

工(gong)作原理(li)

濕(shi)粉(fen)煤灰由(you)供料(liao)(liao)裝置進(jin)(jin)(jin)入三層(ceng)(ceng)(ceng)(ceng)滾筒(tong)的(de)內(nei)(nei)層(ceng)(ceng)(ceng)(ceng),實現(xian)順(shun)流烘干(gan), 粉(fen)煤灰在(zai)(zai)內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)的(de)抄板下(xia)不斷抄起、散落呈(cheng)螺旋行(xing)(xing)(xing)(xing)進(jin)(jin)(jin)式(shi)(shi)實現(xian)熱交換，物(wu)(wu)料(liao)(liao)移動至(zhi)內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)的(de)另(ling)一端進(jin)(jin)(jin)入中(zhong)層(ceng)(ceng)(ceng)(ceng)，進(jin)(jin)(jin)行(xing)(xing)(xing)(xing)逆流烘干(gan)，物(wu)(wu)料(liao)(liao)在(zai)(zai)中(zhong)層(ceng)(ceng)(ceng)(ceng)不斷地被反復揚進(jin)(jin)(jin)，呈(cheng)進(jin)(jin)(jin)兩步退一步的(de)行(xing)(xing)(xing)(xing)進(jin)(jin)(jin)方式(shi)(shi)，物(wu)(wu)料(liao)(liao)在(zai)(zai)中(zhong)層(ceng)(ceng)(ceng)(ceng)既(ji)充分(fen)吸(xi)收內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)滾筒(tong)散發的(de)熱量(liang)，又吸(xi)收中(zhong)層(ceng)(ceng)(ceng)(ceng)滾筒(tong)的(de)熱量(liang)，同時(shi)又延(yan)長了干(gan)燥(zao)(zao)時(shi)間(jian)，物(wu)(wu)料(liao)(liao)在(zai)(zai)此達到(dao)干(gan)燥(zao)(zao)狀(zhuang)態(tai)。物(wu)(wu)料(liao)(liao)行(xing)(xing)(xing)(xing)至(zhi)中(zhong)層(ceng)(ceng)(ceng)(ceng)另(ling)一端而落入外層(ceng)(ceng)(ceng)(ceng)，物(wu)(wu)料(liao)(liao)在(zai)(zai)外層(ceng)(ceng)(ceng)(ceng)滾筒(tong)內(nei)(nei)呈(cheng)矩(ju)(ju)形(xing)多回路方式(shi)(shi)行(xing)(xing)(xing)(xing)進(jin)(jin)(jin)，達到(dao)干(gan)燥(zao)(zao)效(xiao)果的(de)物(wu)(wu)料(liao)(liao)在(zai)(zai)熱風作(zuo)用下(xia)快速行(xing)(xing)(xing)(xing)進(jin)(jin)(jin)排出滾筒(tong)，沒有達到(dao)干(gan)燥(zao)(zao)效(xiao)果的(de)濕(shi)物(wu)(wu)料(liao)(liao)因自重而不能快速行(xing)(xing)(xing)(xing)進(jin)(jin)(jin)，物(wu)(wu)料(liao)(liao)在(zai)(zai)此矩(ju)(ju)形(xing)抄板內(nei)(nei)進(jin)(jin)(jin)行(xing)(xing)(xing)(xing)充分(fen)干(gan)燥(zao)(zao)，由(you)此達到(dao)干(gan)燥(zao)(zao)效(xiao)果，完成干(gan)燥(zao)(zao)過(guo)程。

設(she)備特點(dian)

該(gai)設備與其他(ta)干燥設備相比，生(sheng)(sheng)產(chan)(chan)(chan)能(neng)力(li)(li)大(da)，可連(lian)續操(cao)(cao)作(zuo)； 結(jie)構簡單(dan)，操(cao)(cao)作(zuo)方便；故障少，維修(xiu)費(fei)用(yong)低；適(shi)用(yong)范圍(wei)廣，流(liu)體阻力(li)(li)小，可以用(yong)它(ta)干燥顆(ke)料狀(zhuang)物(wu)料，對于(yu)那些附著性大(da)的物(wu)料也很(hen)有(you)(you)利；操(cao)(cao)作(zuo)彈性大(da)，生(sheng)(sheng)產(chan)(chan)(chan)上(shang)允許產(chan)(chan)(chan)品的流(liu)量有(you)(you)較大(da)波動范圍(wei)，不會影響產(chan)(chan)(chan)品的質量；清掃容易(yi)。