煤(mei)粉(fen)灰烘干機是(shi)煤(mei)粉(fen)經高溫燃(ran)燒后形成的一(yi)種似(si)火山灰質混合材料。

它(ta)是燃(ran)(ran)燒煤(mei)(mei)的發電廠將煤(mei)(mei)磨成(cheng)(cheng)100微(wei)米以下的煤(mei)(mei)粉，用預熱(re)空氣噴入(ru)爐膛經(jing)燃(ran)(ran)燒形成(cheng)(cheng)懸浮狀(zhuang)態(tai)，產生混雜有大量不(bu)燃(ran)(ran)物的高溫(wen)煙氣，經(jing)集塵裝置(zhi)捕(bu)集就得到了粉煤(mei)(mei)灰(hui)。粉煤(mei)(mei)灰(hui)的化(hua)學組成(cheng)(cheng)與(yu)粘土質相(xiang)似，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(gai)和(he)未燃(ran)(ran)盡(jin)碳。

工作原理

濕(shi)粉煤(mei)灰由(you)供料(liao)(liao)(liao)裝置進(jin)入三層(ceng)(ceng)(ceng)滾(gun)(gun)筒(tong)(tong)的內(nei)(nei)層(ceng)(ceng)(ceng),實現順流(liu)烘(hong)干(gan)(gan)(gan), 粉煤(mei)灰在(zai)(zai)內(nei)(nei)層(ceng)(ceng)(ceng)的抄板下不(bu)斷抄起、散落(luo)呈(cheng)螺旋行(xing)(xing)(xing)(xing)進(jin)式(shi)實現熱(re)交(jiao)換(huan)，物(wu)(wu)料(liao)(liao)(liao)移動至內(nei)(nei)層(ceng)(ceng)(ceng)的另(ling)一(yi)端(duan)(duan)進(jin)入中(zhong)(zhong)層(ceng)(ceng)(ceng)，進(jin)行(xing)(xing)(xing)(xing)逆流(liu)烘(hong)干(gan)(gan)(gan)，物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)不(bu)斷地被反復揚進(jin)，呈(cheng)進(jin)兩步(bu)(bu)退一(yi)步(bu)(bu)的行(xing)(xing)(xing)(xing)進(jin)方式(shi)，物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)既充分(fen)吸收內(nei)(nei)層(ceng)(ceng)(ceng)滾(gun)(gun)筒(tong)(tong)散發的熱(re)量，又(you)吸收中(zhong)(zhong)層(ceng)(ceng)(ceng)滾(gun)(gun)筒(tong)(tong)的熱(re)量，同時又(you)延長了干(gan)(gan)(gan)燥(zao)時間(jian)，物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)此達(da)到干(gan)(gan)(gan)燥(zao)狀(zhuang)態。物(wu)(wu)料(liao)(liao)(liao)行(xing)(xing)(xing)(xing)至中(zhong)(zhong)層(ceng)(ceng)(ceng)另(ling)一(yi)端(duan)(duan)而落(luo)入外層(ceng)(ceng)(ceng)，物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)外層(ceng)(ceng)(ceng)滾(gun)(gun)筒(tong)(tong)內(nei)(nei)呈(cheng)矩形(xing)多回路方式(shi)行(xing)(xing)(xing)(xing)進(jin)，達(da)到干(gan)(gan)(gan)燥(zao)效(xiao)果(guo)的物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)熱(re)風作用(yong)下快速(su)行(xing)(xing)(xing)(xing)進(jin)排出滾(gun)(gun)筒(tong)(tong)，沒有(you)達(da)到干(gan)(gan)(gan)燥(zao)效(xiao)果(guo)的濕(shi)物(wu)(wu)料(liao)(liao)(liao)因自重而不(bu)能快速(su)行(xing)(xing)(xing)(xing)進(jin)，物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)此矩形(xing)抄板內(nei)(nei)進(jin)行(xing)(xing)(xing)(xing)充分(fen)干(gan)(gan)(gan)燥(zao)，由(you)此達(da)到干(gan)(gan)(gan)燥(zao)效(xiao)果(guo)，完成干(gan)(gan)(gan)燥(zao)過程。

設(she)備特點

該設備(bei)與其他干(gan)(gan)燥(zao)設備(bei)相比(bi)，生(sheng)產能力(li)大(da)，可(ke)連續操作(zuo)(zuo)； 結構簡(jian)單(dan)，操作(zuo)(zuo)方(fang)便；故(gu)障(zhang)少，維修費用低；適用范圍廣，流體阻力(li)小，可(ke)以用它干(gan)(gan)燥(zao)顆料(liao)狀物(wu)料(liao)，對于那(nei)些附著性大(da)的物(wu)料(liao)也很有利(li)；操作(zuo)(zuo)彈性大(da)，生(sheng)產上允許(xu)產品的流量(liang)有較大(da)波(bo)動范圍，不會影響產品的質量(liang)；清掃容易(yi)。