煤粉灰烘干機是(shi)煤粉經高(gao)溫燃燒后形(xing)成的一種似火山灰質混合材料。

它是燃(ran)(ran)燒煤(mei)的(de)發電廠將(jiang)煤(mei)磨成(cheng)100微米以下的(de)煤(mei)粉(fen)(fen)，用預熱空氣噴(pen)入爐膛(tang)經燃(ran)(ran)燒形成(cheng)懸浮狀態，產生混雜有大量不燃(ran)(ran)物的(de)高溫煙氣，經集(ji)塵裝置捕(bu)集(ji)就得到了粉(fen)(fen)煤(mei)灰。粉(fen)(fen)煤(mei)灰的(de)化(hua)學(xue)組成(cheng)與(yu)粘土(tu)質相(xiang)似，主要成(cheng)分(fen)為二氧化(hua)硅、三(san)氧化(hua)二鋁、三(san)氧化(hua)二鐵、氧化(hua)鈣和未燃(ran)(ran)盡碳。

工作(zuo)原理

濕粉煤灰由(you)(you)供料(liao)(liao)(liao)裝置進(jin)入(ru)三(san)層(ceng)(ceng)滾筒(tong)(tong)(tong)的內(nei)(nei)(nei)層(ceng)(ceng),實(shi)現順流(liu)烘干(gan)(gan), 粉煤灰在(zai)(zai)內(nei)(nei)(nei)層(ceng)(ceng)的抄(chao)板(ban)下不斷抄(chao)起、散(san)落呈(cheng)(cheng)螺(luo)旋行(xing)進(jin)式實(shi)現熱交換，物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)移動至內(nei)(nei)(nei)層(ceng)(ceng)的另(ling)一(yi)端(duan)進(jin)入(ru)中(zhong)(zhong)(zhong)(zhong)層(ceng)(ceng)，進(jin)行(xing)逆流(liu)烘干(gan)(gan)，物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)中(zhong)(zhong)(zhong)(zhong)層(ceng)(ceng)不斷地被反(fan)復揚進(jin)，呈(cheng)(cheng)進(jin)兩步退一(yi)步的行(xing)進(jin)方(fang)式，物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)中(zhong)(zhong)(zhong)(zhong)層(ceng)(ceng)既充分吸收內(nei)(nei)(nei)層(ceng)(ceng)滾筒(tong)(tong)(tong)散(san)發的熱量，又(you)吸收中(zhong)(zhong)(zhong)(zhong)層(ceng)(ceng)滾筒(tong)(tong)(tong)的熱量，同時又(you)延(yan)長了干(gan)(gan)燥時間，物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)此達到(dao)干(gan)(gan)燥狀態(tai)。物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)行(xing)至中(zhong)(zhong)(zhong)(zhong)層(ceng)(ceng)另(ling)一(yi)端(duan)而落入(ru)外層(ceng)(ceng)，物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)外層(ceng)(ceng)滾筒(tong)(tong)(tong)內(nei)(nei)(nei)呈(cheng)(cheng)矩形(xing)多回(hui)路(lu)方(fang)式行(xing)進(jin)，達到(dao)干(gan)(gan)燥效(xiao)果(guo)(guo)的物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)熱風作(zuo)用下快速行(xing)進(jin)排出(chu)滾筒(tong)(tong)(tong)，沒有達到(dao)干(gan)(gan)燥效(xiao)果(guo)(guo)的濕物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)因自(zi)重而不能快速行(xing)進(jin)，物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)此矩形(xing)抄(chao)板(ban)內(nei)(nei)(nei)進(jin)行(xing)充分干(gan)(gan)燥，由(you)(you)此達到(dao)干(gan)(gan)燥效(xiao)果(guo)(guo)，完成干(gan)(gan)燥過程。

設(she)備(bei)特點(dian)

該(gai)設備與其他(ta)干燥設備相比(bi)，生產(chan)(chan)能力(li)大(da)，可連(lian)續操作(zuo)(zuo)； 結構(gou)簡單，操作(zuo)(zuo)方便；故障少，維修費用(yong)低(di)；適用(yong)范(fan)圍廣，流(liu)體阻力(li)小，可以(yi)用(yong)它干燥顆料狀物料，對于那些(xie)附(fu)著性大(da)的(de)物料也很(hen)有利；操作(zuo)(zuo)彈性大(da)，生產(chan)(chan)上允(yun)許產(chan)(chan)品的(de)流(liu)量(liang)有較大(da)波動范(fan)圍，不會影響產(chan)(chan)品的(de)質(zhi)量(liang)；清(qing)掃容易。