煤粉(fen)灰烘干機是煤粉(fen)經高溫燃燒后形成的一種似火山灰質混合材料。

它是燃(ran)燒(shao)煤(mei)的發電廠將煤(mei)磨成(cheng)100微米以(yi)下的煤(mei)粉，用預熱空氣(qi)噴入爐膛(tang)經燃(ran)燒(shao)形成(cheng)懸(xuan)浮狀(zhuang)態，產生混雜有大量(liang)不燃(ran)物的高(gao)溫煙氣(qi)，經集塵裝置捕集就得到了粉煤(mei)灰(hui)。粉煤(mei)灰(hui)的化(hua)學組成(cheng)與粘土質相似，主要(yao)成(cheng)分為二氧(yang)(yang)化(hua)硅、三(san)氧(yang)(yang)化(hua)二鋁、三(san)氧(yang)(yang)化(hua)二鐵(tie)、氧(yang)(yang)化(hua)鈣和(he)未燃(ran)盡碳。

工作(zuo)原理

濕粉煤(mei)灰由供(gong)料(liao)(liao)(liao)(liao)(liao)(liao)裝(zhuang)置(zhi)進(jin)(jin)(jin)(jin)入(ru)三層(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)的(de)內(nei)(nei)層(ceng)(ceng)(ceng)(ceng),實現順流烘干, 粉煤(mei)灰在(zai)(zai)(zai)內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)的(de)抄(chao)板(ban)下不(bu)斷抄(chao)起、散落呈(cheng)螺旋行(xing)(xing)(xing)進(jin)(jin)(jin)(jin)式實現熱交換，物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)(liao)(liao)(liao)移動至(zhi)內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)的(de)另(ling)一端進(jin)(jin)(jin)(jin)入(ru)中(zhong)層(ceng)(ceng)(ceng)(ceng)，進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)逆流烘干，物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)(liao)(liao)(liao)在(zai)(zai)(zai)中(zhong)層(ceng)(ceng)(ceng)(ceng)不(bu)斷地被(bei)反復揚進(jin)(jin)(jin)(jin)，呈(cheng)進(jin)(jin)(jin)(jin)兩步退一步的(de)行(xing)(xing)(xing)進(jin)(jin)(jin)(jin)方式，物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)(liao)(liao)(liao)在(zai)(zai)(zai)中(zhong)層(ceng)(ceng)(ceng)(ceng)既充(chong)分吸(xi)收內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)散發(fa)的(de)熱量，又吸(xi)收中(zhong)層(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)的(de)熱量，同時(shi)又延長了干燥(zao)(zao)(zao)時(shi)間，物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)(liao)(liao)(liao)在(zai)(zai)(zai)此達到干燥(zao)(zao)(zao)狀態。物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)(liao)(liao)(liao)行(xing)(xing)(xing)至(zhi)中(zhong)層(ceng)(ceng)(ceng)(ceng)另(ling)一端而(er)落入(ru)外層(ceng)(ceng)(ceng)(ceng)，物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)(liao)(liao)(liao)在(zai)(zai)(zai)外層(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)內(nei)(nei)呈(cheng)矩形(xing)多(duo)回路(lu)方式行(xing)(xing)(xing)進(jin)(jin)(jin)(jin)，達到干燥(zao)(zao)(zao)效(xiao)果的(de)物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)(liao)(liao)(liao)在(zai)(zai)(zai)熱風作用(yong)下快速(su)(su)行(xing)(xing)(xing)進(jin)(jin)(jin)(jin)排出(chu)滾(gun)筒(tong)(tong)，沒(mei)有達到干燥(zao)(zao)(zao)效(xiao)果的(de)濕物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)(liao)(liao)(liao)因自重(zhong)而(er)不(bu)能快速(su)(su)行(xing)(xing)(xing)進(jin)(jin)(jin)(jin)，物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)(liao)(liao)(liao)在(zai)(zai)(zai)此矩形(xing)抄(chao)板(ban)內(nei)(nei)進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)充(chong)分干燥(zao)(zao)(zao)，由此達到干燥(zao)(zao)(zao)效(xiao)果，完(wan)成干燥(zao)(zao)(zao)過程。

設備(bei)特點

該(gai)設備(bei)與其他干(gan)燥(zao)設備(bei)相比，生(sheng)產(chan)能(neng)力大(da)，可(ke)連續操(cao)作； 結構簡單，操(cao)作方便；故障(zhang)少，維修費用低；適用范(fan)圍廣，流體阻力小，可(ke)以用它干(gan)燥(zao)顆料(liao)狀物料(liao)，對于那些附著性大(da)的物料(liao)也很有(you)利；操(cao)作彈性大(da)，生(sheng)產(chan)上允許產(chan)品的流量有(you)較大(da)波動(dong)范(fan)圍，不會影響(xiang)產(chan)品的質量；清掃容易。