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)的發電廠(chang)將煤(mei)磨成(cheng)(cheng)100微米(mi)以(yi)下的煤(mei)粉，用預(yu)熱空氣噴入爐膛經燃燒(shao)形成(cheng)(cheng)懸浮狀(zhuang)態(tai)，產生(sheng)混雜有大量(liang)不燃物的高溫煙氣，經集塵裝置捕集就得到了粉煤(mei)灰。粉煤(mei)灰的化(hua)學組成(cheng)(cheng)與粘土質(zhi)相似，主要(yao)成(cheng)(cheng)分為二(er)(er)氧化(hua)硅、三氧化(hua)二(er)(er)鋁、三氧化(hua)二(er)(er)鐵、氧化(hua)鈣和未燃盡碳。

工作(zuo)原理

濕(shi)粉(fen)(fen)煤灰由供(gong)料(liao)(liao)(liao)裝(zhuang)置(zhi)進(jin)(jin)入三層(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)的(de)(de)內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)(ceng),實現順流烘干(gan), 粉(fen)(fen)煤灰在(zai)(zai)內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)的(de)(de)抄(chao)板下(xia)不(bu)斷抄(chao)起、散落呈(cheng)螺旋行(xing)進(jin)(jin)式(shi)實現熱(re)交換，物(wu)(wu)(wu)料(liao)(liao)(liao)移動至內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)的(de)(de)另一端進(jin)(jin)入中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)，進(jin)(jin)行(xing)逆流烘干(gan)，物(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)不(bu)斷地(di)被反(fan)復(fu)揚(yang)進(jin)(jin)，呈(cheng)進(jin)(jin)兩步(bu)退一步(bu)的(de)(de)行(xing)進(jin)(jin)方(fang)式(shi)，物(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)既充(chong)分吸收(shou)(shou)內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)散發的(de)(de)熱(re)量(liang)(liang)，又吸收(shou)(shou)中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)的(de)(de)熱(re)量(liang)(liang)，同時又延長(chang)了干(gan)燥時間，物(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)此達到干(gan)燥狀態。物(wu)(wu)(wu)料(liao)(liao)(liao)行(xing)至中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)另一端而落入外層(ceng)(ceng)(ceng)(ceng)(ceng)，物(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)外層(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)內(nei)(nei)呈(cheng)矩形多回路方(fang)式(shi)行(xing)進(jin)(jin)，達到干(gan)燥效果的(de)(de)物(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)熱(re)風作用下(xia)快(kuai)速行(xing)進(jin)(jin)排出滾(gun)筒(tong)(tong)，沒(mei)有達到干(gan)燥效果的(de)(de)濕(shi)物(wu)(wu)(wu)料(liao)(liao)(liao)因自重而不(bu)能快(kuai)速行(xing)進(jin)(jin)，物(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)此矩形抄(chao)板內(nei)(nei)進(jin)(jin)行(xing)充(chong)分干(gan)燥，由此達到干(gan)燥效果，完成干(gan)燥過程。

設(she)備特點(dian)

該設(she)備(bei)與其他干燥設(she)備(bei)相(xiang)比(bi)，生產(chan)(chan)能力(li)大(da)(da)，可(ke)連(lian)續操作(zuo)(zuo)； 結構簡(jian)單，操作(zuo)(zuo)方便；故障少，維修費(fei)用(yong)低(di)；適用(yong)范(fan)圍廣，流體阻力(li)小，可(ke)以(yi)用(yong)它干燥顆料狀(zhuang)物料，對于那些(xie)附著性大(da)(da)的(de)物料也(ye)很有利；操作(zuo)(zuo)彈性大(da)(da)，生產(chan)(chan)上允許(xu)產(chan)(chan)品的(de)流量(liang)有較大(da)(da)波動范(fan)圍，不會(hui)影響產(chan)(chan)品的(de)質量(liang)；清掃容易(yi)。