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)燒煤的(de)發電(dian)廠將煤磨成(cheng)(cheng)(cheng)100微(wei)米以下的(de)煤粉(fen)(fen)，用(yong)預熱空氣(qi)噴(pen)入(ru)爐膛經(jing)燃(ran)燒形成(cheng)(cheng)(cheng)懸浮狀(zhuang)態，產生混雜有大量(liang)不(bu)燃(ran)物的(de)高溫煙氣(qi)，經(jing)集(ji)塵裝置捕集(ji)就得(de)到(dao)了粉(fen)(fen)煤灰(hui)。粉(fen)(fen)煤灰(hui)的(de)化(hua)(hua)學(xue)組成(cheng)(cheng)(cheng)與粘土質(zhi)相(xiang)似，主要成(cheng)(cheng)(cheng)分為二氧化(hua)(hua)硅、三氧化(hua)(hua)二鋁、三氧化(hua)(hua)二鐵、氧化(hua)(hua)鈣和未(wei)燃(ran)盡(jin)碳。

工作原理

濕(shi)粉(fen)煤(mei)(mei)灰(hui)由供料(liao)(liao)(liao)裝置進(jin)(jin)(jin)(jin)入(ru)三層(ceng)滾(gun)(gun)筒(tong)(tong)的(de)(de)內(nei)(nei)(nei)層(ceng),實現順流烘(hong)(hong)干(gan)(gan), 粉(fen)煤(mei)(mei)灰(hui)在(zai)(zai)(zai)(zai)內(nei)(nei)(nei)層(ceng)的(de)(de)抄(chao)板下不(bu)斷(duan)(duan)抄(chao)起、散落呈(cheng)(cheng)(cheng)螺(luo)旋(xuan)行(xing)(xing)(xing)(xing)(xing)進(jin)(jin)(jin)(jin)式(shi)(shi)實現熱交換，物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)移動至內(nei)(nei)(nei)層(ceng)的(de)(de)另一端進(jin)(jin)(jin)(jin)入(ru)中(zhong)層(ceng)，進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)(xing)逆流烘(hong)(hong)干(gan)(gan)，物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)(zai)(zai)中(zhong)層(ceng)不(bu)斷(duan)(duan)地被反復揚進(jin)(jin)(jin)(jin)，呈(cheng)(cheng)(cheng)進(jin)(jin)(jin)(jin)兩步(bu)退(tui)一步(bu)的(de)(de)行(xing)(xing)(xing)(xing)(xing)進(jin)(jin)(jin)(jin)方(fang)式(shi)(shi)，物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)(zai)(zai)中(zhong)層(ceng)既(ji)充(chong)分(fen)吸收(shou)內(nei)(nei)(nei)層(ceng)滾(gun)(gun)筒(tong)(tong)散發的(de)(de)熱量，又吸收(shou)中(zhong)層(ceng)滾(gun)(gun)筒(tong)(tong)的(de)(de)熱量，同時又延(yan)長了干(gan)(gan)燥(zao)(zao)時間(jian)，物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)(zai)(zai)此(ci)(ci)達(da)(da)到干(gan)(gan)燥(zao)(zao)狀態。物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)行(xing)(xing)(xing)(xing)(xing)至中(zhong)層(ceng)另一端而(er)落入(ru)外層(ceng)，物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)(zai)(zai)外層(ceng)滾(gun)(gun)筒(tong)(tong)內(nei)(nei)(nei)呈(cheng)(cheng)(cheng)矩形(xing)多回路方(fang)式(shi)(shi)行(xing)(xing)(xing)(xing)(xing)進(jin)(jin)(jin)(jin)，達(da)(da)到干(gan)(gan)燥(zao)(zao)效(xiao)果(guo)(guo)的(de)(de)物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)(zai)(zai)熱風作用下快(kuai)速行(xing)(xing)(xing)(xing)(xing)進(jin)(jin)(jin)(jin)排出滾(gun)(gun)筒(tong)(tong)，沒(mei)有達(da)(da)到干(gan)(gan)燥(zao)(zao)效(xiao)果(guo)(guo)的(de)(de)濕(shi)物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)因自(zi)重而(er)不(bu)能快(kuai)速行(xing)(xing)(xing)(xing)(xing)進(jin)(jin)(jin)(jin)，物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)(zai)(zai)此(ci)(ci)矩形(xing)抄(chao)板內(nei)(nei)(nei)進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)(xing)充(chong)分(fen)干(gan)(gan)燥(zao)(zao)，由此(ci)(ci)達(da)(da)到干(gan)(gan)燥(zao)(zao)效(xiao)果(guo)(guo)，完成(cheng)干(gan)(gan)燥(zao)(zao)過程。

設備特點(dian)

該設(she)(she)備(bei)(bei)與(yu)其他干燥設(she)(she)備(bei)(bei)相比，生產(chan)能力大(da)，可連(lian)續操(cao)作(zuo)； 結構簡單，操(cao)作(zuo)方便；故障(zhang)少，維修費用低；適(shi)用范圍廣(guang)，流體阻力小(xiao)，可以用它干燥顆料(liao)狀(zhuang)物(wu)料(liao)，對(dui)于(yu)那些(xie)附著性大(da)的物(wu)料(liao)也很有利；操(cao)作(zuo)彈(dan)性大(da)，生產(chan)上允許(xu)產(chan)品(pin)的流量(liang)有較大(da)波(bo)動范圍，不會影響產(chan)品(pin)的質(zhi)量(liang)；清掃容(rong)易。