煤粉灰(hui)烘干機是煤粉經高溫燃(ran)燒(shao)后形成的一(yi)種(zhong)似火山灰(hui)質(zhi)混(hun)合(he)材(cai)料(liao)。

它是燃(ran)燒煤(mei)(mei)的發電廠將煤(mei)(mei)磨成(cheng)(cheng)100微米以下的煤(mei)(mei)粉(fen)，用預熱空氣噴(pen)入爐(lu)膛經燃(ran)燒形(xing)成(cheng)(cheng)懸浮狀態，產(chan)生混雜有大量(liang)不燃(ran)物的高溫煙氣，經集塵裝置捕集就得到了粉(fen)煤(mei)(mei)灰。粉(fen)煤(mei)(mei)灰的化(hua)學(xue)組成(cheng)(cheng)與粘土(tu)質(zhi)相似(si)，主要成(cheng)(cheng)分為二(er)氧化(hua)硅、三(san)氧化(hua)二(er)鋁、三(san)氧化(hua)二(er)鐵、氧化(hua)鈣和未燃(ran)盡碳。

工(gong)作原理

濕粉(fen)(fen)煤灰(hui)由(you)供料裝置進(jin)(jin)(jin)(jin)(jin)(jin)入(ru)三層(ceng)(ceng)(ceng)(ceng)滾(gun)(gun)筒的(de)內(nei)層(ceng)(ceng)(ceng)(ceng),實現順(shun)流烘干, 粉(fen)(fen)煤灰(hui)在(zai)(zai)內(nei)層(ceng)(ceng)(ceng)(ceng)的(de)抄板下(xia)不斷抄起、散(san)落呈(cheng)螺旋行進(jin)(jin)(jin)(jin)(jin)(jin)式(shi)實現熱交(jiao)換，物(wu)(wu)(wu)料移動至內(nei)層(ceng)(ceng)(ceng)(ceng)的(de)另一(yi)(yi)端(duan)進(jin)(jin)(jin)(jin)(jin)(jin)入(ru)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)，進(jin)(jin)(jin)(jin)(jin)(jin)行逆流烘干，物(wu)(wu)(wu)料在(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)不斷地被反(fan)復揚進(jin)(jin)(jin)(jin)(jin)(jin)，呈(cheng)進(jin)(jin)(jin)(jin)(jin)(jin)兩步退一(yi)(yi)步的(de)行進(jin)(jin)(jin)(jin)(jin)(jin)方式(shi)，物(wu)(wu)(wu)料在(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)既充(chong)分吸收(shou)內(nei)層(ceng)(ceng)(ceng)(ceng)滾(gun)(gun)筒散(san)發的(de)熱量(liang)，又(you)吸收(shou)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)滾(gun)(gun)筒的(de)熱量(liang)，同(tong)時又(you)延長了(le)干燥(zao)(zao)(zao)時間，物(wu)(wu)(wu)料在(zai)(zai)此達到(dao)干燥(zao)(zao)(zao)狀態。物(wu)(wu)(wu)料行至中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)另一(yi)(yi)端(duan)而落入(ru)外層(ceng)(ceng)(ceng)(ceng)，物(wu)(wu)(wu)料在(zai)(zai)外層(ceng)(ceng)(ceng)(ceng)滾(gun)(gun)筒內(nei)呈(cheng)矩形多回路方式(shi)行進(jin)(jin)(jin)(jin)(jin)(jin)，達到(dao)干燥(zao)(zao)(zao)效果的(de)物(wu)(wu)(wu)料在(zai)(zai)熱風作用下(xia)快(kuai)速行進(jin)(jin)(jin)(jin)(jin)(jin)排出滾(gun)(gun)筒，沒(mei)有達到(dao)干燥(zao)(zao)(zao)效果的(de)濕物(wu)(wu)(wu)料因自重而不能快(kuai)速行進(jin)(jin)(jin)(jin)(jin)(jin)，物(wu)(wu)(wu)料在(zai)(zai)此矩形抄板內(nei)進(jin)(jin)(jin)(jin)(jin)(jin)行充(chong)分干燥(zao)(zao)(zao)，由(you)此達到(dao)干燥(zao)(zao)(zao)效果，完成干燥(zao)(zao)(zao)過程。

設備特(te)點

該(gai)設備與(yu)其他(ta)干燥(zao)設備相(xiang)比，生(sheng)產(chan)能(neng)力(li)大(da)，可連續(xu)操作； 結構簡單，操作方(fang)便；故障少，維修費用(yong)低；適用(yong)范圍廣，流體阻力(li)小(xiao)，可以用(yong)它干燥(zao)顆料狀物(wu)料，對于那些附著性大(da)的物(wu)料也很有(you)利；操作彈性大(da)，生(sheng)產(chan)上(shang)允許產(chan)品(pin)的流量(liang)有(you)較大(da)波(bo)動范圍，不會影響產(chan)品(pin)的質(zhi)量(liang)；清掃容易。