煤(mei)粉灰(hui)(hui)烘干機是煤(mei)粉經高溫燃燒后形成(cheng)的一種似火山灰(hui)(hui)質(zhi)混合材料。

它是燃燒(shao)煤的發電廠將煤磨成100微米以(yi)下的煤粉(fen)(fen)，用預(yu)熱(re)空氣噴入爐(lu)膛經燃燒(shao)形(xing)成懸浮狀態，產生混雜(za)有大量(liang)不燃物的高溫(wen)煙氣，經集(ji)塵(chen)裝置捕集(ji)就(jiu)得到了粉(fen)(fen)煤灰。粉(fen)(fen)煤灰的化學組成與粘土質相似(si)，主要(yao)成分為二(er)氧(yang)化硅、三氧(yang)化二(er)鋁、三氧(yang)化二(er)鐵、氧(yang)化鈣和未(wei)燃盡碳。

工作原理

濕粉煤(mei)灰(hui)由(you)供料(liao)(liao)裝置進(jin)(jin)入三(san)層(ceng)(ceng)(ceng)滾(gun)(gun)筒(tong)(tong)(tong)的(de)(de)內層(ceng)(ceng)(ceng),實現(xian)順流烘干(gan)(gan)(gan)(gan), 粉煤(mei)灰(hui)在內層(ceng)(ceng)(ceng)的(de)(de)抄(chao)板下不(bu)斷抄(chao)起、散落呈螺旋行(xing)(xing)(xing)進(jin)(jin)式實現(xian)熱(re)交換(huan)，物(wu)料(liao)(liao)移(yi)動至(zhi)內層(ceng)(ceng)(ceng)的(de)(de)另(ling)一(yi)端進(jin)(jin)入中(zhong)(zhong)層(ceng)(ceng)(ceng)，進(jin)(jin)行(xing)(xing)(xing)逆流烘干(gan)(gan)(gan)(gan)，物(wu)料(liao)(liao)在中(zhong)(zhong)層(ceng)(ceng)(ceng)不(bu)斷地被反復揚進(jin)(jin)，呈進(jin)(jin)兩步(bu)退一(yi)步(bu)的(de)(de)行(xing)(xing)(xing)進(jin)(jin)方(fang)式，物(wu)料(liao)(liao)在中(zhong)(zhong)層(ceng)(ceng)(ceng)既充分吸收內層(ceng)(ceng)(ceng)滾(gun)(gun)筒(tong)(tong)(tong)散發的(de)(de)熱(re)量，又(you)吸收中(zhong)(zhong)層(ceng)(ceng)(ceng)滾(gun)(gun)筒(tong)(tong)(tong)的(de)(de)熱(re)量，同時(shi)又(you)延(yan)長了干(gan)(gan)(gan)(gan)燥(zao)(zao)(zao)時(shi)間，物(wu)料(liao)(liao)在此達(da)(da)到干(gan)(gan)(gan)(gan)燥(zao)(zao)(zao)狀態(tai)。物(wu)料(liao)(liao)行(xing)(xing)(xing)至(zhi)中(zhong)(zhong)層(ceng)(ceng)(ceng)另(ling)一(yi)端而落入外層(ceng)(ceng)(ceng)，物(wu)料(liao)(liao)在外層(ceng)(ceng)(ceng)滾(gun)(gun)筒(tong)(tong)(tong)內呈矩形多回路(lu)方(fang)式行(xing)(xing)(xing)進(jin)(jin)，達(da)(da)到干(gan)(gan)(gan)(gan)燥(zao)(zao)(zao)效(xiao)(xiao)果(guo)的(de)(de)物(wu)料(liao)(liao)在熱(re)風作用(yong)下快速(su)行(xing)(xing)(xing)進(jin)(jin)排出滾(gun)(gun)筒(tong)(tong)(tong)，沒有(you)達(da)(da)到干(gan)(gan)(gan)(gan)燥(zao)(zao)(zao)效(xiao)(xiao)果(guo)的(de)(de)濕物(wu)料(liao)(liao)因(yin)自(zi)重而不(bu)能快速(su)行(xing)(xing)(xing)進(jin)(jin)，物(wu)料(liao)(liao)在此矩形抄(chao)板內進(jin)(jin)行(xing)(xing)(xing)充分干(gan)(gan)(gan)(gan)燥(zao)(zao)(zao)，由(you)此達(da)(da)到干(gan)(gan)(gan)(gan)燥(zao)(zao)(zao)效(xiao)(xiao)果(guo)，完成干(gan)(gan)(gan)(gan)燥(zao)(zao)(zao)過程(cheng)。

設備特點

該設(she)備與其他(ta)干(gan)燥(zao)設(she)備相比，生(sheng)產(chan)(chan)(chan)能力(li)大(da)(da)，可連續操作； 結構簡單，操作方便；故障少，維修費用(yong)低；適用(yong)范圍廣，流體阻力(li)小，可以(yi)用(yong)它干(gan)燥(zao)顆料狀物料，對于那些附(fu)著性(xing)大(da)(da)的物料也(ye)很有(you)利；操作彈性(xing)大(da)(da)，生(sheng)產(chan)(chan)(chan)上允許產(chan)(chan)(chan)品的流量有(you)較大(da)(da)波(bo)動范圍，不會影響(xiang)產(chan)(chan)(chan)品的質量；清掃容(rong)易。