煤粉灰烘干機是煤粉經高溫燃(ran)燒后形成的一(yi)種似火山灰質混(hun)合材料。

它(ta)是燃(ran)燒煤的發電廠將煤磨成100微(wei)米(mi)以下的煤粉(fen)，用(yong)預熱(re)空氣噴入爐膛經燃(ran)燒形(xing)成懸浮狀(zhuang)態(tai)，產(chan)生(sheng)混雜有(you)大量不燃(ran)物的高溫煙氣，經集塵裝(zhuang)置捕(bu)集就得到了粉(fen)煤灰(hui)。粉(fen)煤灰(hui)的化(hua)(hua)(hua)學組成與粘土質相(xiang)似，主要成分為二(er)氧(yang)化(hua)(hua)(hua)硅、三(san)氧(yang)化(hua)(hua)(hua)二(er)鋁、三(san)氧(yang)化(hua)(hua)(hua)二(er)鐵、氧(yang)化(hua)(hua)(hua)鈣和未燃(ran)盡碳。

工作原理

濕粉煤灰由供料(liao)(liao)裝(zhuang)置進(jin)(jin)入(ru)三層(ceng)(ceng)(ceng)滾筒(tong)(tong)的(de)內(nei)(nei)(nei)層(ceng)(ceng)(ceng),實(shi)現(xian)順流(liu)烘干(gan)(gan), 粉煤灰在內(nei)(nei)(nei)層(ceng)(ceng)(ceng)的(de)抄(chao)(chao)(chao)板下(xia)(xia)不(bu)斷抄(chao)(chao)(chao)起、散落(luo)呈(cheng)(cheng)螺旋行(xing)(xing)(xing)進(jin)(jin)式(shi)實(shi)現(xian)熱(re)(re)交換，物(wu)(wu)(wu)料(liao)(liao)移動至內(nei)(nei)(nei)層(ceng)(ceng)(ceng)的(de)另一端(duan)進(jin)(jin)入(ru)中(zhong)層(ceng)(ceng)(ceng)，進(jin)(jin)行(xing)(xing)(xing)逆流(liu)烘干(gan)(gan)，物(wu)(wu)(wu)料(liao)(liao)在中(zhong)層(ceng)(ceng)(ceng)不(bu)斷地被反復(fu)揚(yang)進(jin)(jin)，呈(cheng)(cheng)進(jin)(jin)兩(liang)步退一步的(de)行(xing)(xing)(xing)進(jin)(jin)方式(shi)，物(wu)(wu)(wu)料(liao)(liao)在中(zhong)層(ceng)(ceng)(ceng)既充分吸收內(nei)(nei)(nei)層(ceng)(ceng)(ceng)滾筒(tong)(tong)散發的(de)熱(re)(re)量，又吸收中(zhong)層(ceng)(ceng)(ceng)滾筒(tong)(tong)的(de)熱(re)(re)量，同時又延長了干(gan)(gan)燥(zao)時間，物(wu)(wu)(wu)料(liao)(liao)在此(ci)達到(dao)(dao)干(gan)(gan)燥(zao)狀態。物(wu)(wu)(wu)料(liao)(liao)行(xing)(xing)(xing)至中(zhong)層(ceng)(ceng)(ceng)另一端(duan)而落(luo)入(ru)外層(ceng)(ceng)(ceng)，物(wu)(wu)(wu)料(liao)(liao)在外層(ceng)(ceng)(ceng)滾筒(tong)(tong)內(nei)(nei)(nei)呈(cheng)(cheng)矩形(xing)多回(hui)路(lu)方式(shi)行(xing)(xing)(xing)進(jin)(jin)，達到(dao)(dao)干(gan)(gan)燥(zao)效(xiao)果(guo)(guo)(guo)的(de)物(wu)(wu)(wu)料(liao)(liao)在熱(re)(re)風作用下(xia)(xia)快(kuai)速行(xing)(xing)(xing)進(jin)(jin)排出(chu)滾筒(tong)(tong)，沒有達到(dao)(dao)干(gan)(gan)燥(zao)效(xiao)果(guo)(guo)(guo)的(de)濕物(wu)(wu)(wu)料(liao)(liao)因自重而不(bu)能(neng)快(kuai)速行(xing)(xing)(xing)進(jin)(jin)，物(wu)(wu)(wu)料(liao)(liao)在此(ci)矩形(xing)抄(chao)(chao)(chao)板內(nei)(nei)(nei)進(jin)(jin)行(xing)(xing)(xing)充分干(gan)(gan)燥(zao)，由此(ci)達到(dao)(dao)干(gan)(gan)燥(zao)效(xiao)果(guo)(guo)(guo)，完成干(gan)(gan)燥(zao)過程。

設(she)備特點

該設備與其他(ta)干燥(zao)設備相(xiang)比，生(sheng)產(chan)(chan)能力大，可(ke)連續操(cao)作(zuo)(zuo)； 結構簡單，操(cao)作(zuo)(zuo)方便；故障少，維修費用(yong)(yong)低；適(shi)用(yong)(yong)范圍(wei)廣(guang)，流(liu)體阻力小，可(ke)以用(yong)(yong)它干燥(zao)顆料狀物料，對(dui)于那些附著性大的物料也(ye)很有利；操(cao)作(zuo)(zuo)彈性大，生(sheng)產(chan)(chan)上允許(xu)產(chan)(chan)品(pin)的流(liu)量(liang)有較大波動范圍(wei)，不會(hui)影(ying)響(xiang)產(chan)(chan)品(pin)的質量(liang)；清(qing)掃(sao)容易(yi)。