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

它是(shi)燃(ran)(ran)燒煤的發電(dian)廠將(jiang)煤磨成(cheng)100微米以下的煤粉(fen)，用預熱(re)空氣噴入爐膛經(jing)燃(ran)(ran)燒形(xing)成(cheng)懸浮狀態(tai)，產生混雜(za)有大量不(bu)燃(ran)(ran)物的高(gao)溫煙氣，經(jing)集塵裝置捕集就得(de)到了粉(fen)煤灰。粉(fen)煤灰的化(hua)學組成(cheng)與粘土質相似，主要成(cheng)分為二氧化(hua)硅、三氧化(hua)二鋁、三氧化(hua)二鐵、氧化(hua)鈣和未(wei)燃(ran)(ran)盡(jin)碳。

工作原理(li)

濕(shi)粉煤灰(hui)由供(gong)料(liao)(liao)(liao)裝置進(jin)入(ru)三層(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)的內(nei)層(ceng)(ceng)(ceng)(ceng)(ceng),實(shi)(shi)現(xian)順流烘干, 粉煤灰(hui)在(zai)(zai)內(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)的抄板(ban)下不斷(duan)抄起、散落呈螺旋(xuan)行進(jin)式實(shi)(shi)現(xian)熱交換(huan)，物(wu)(wu)料(liao)(liao)(liao)移動(dong)至內(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)的另(ling)一(yi)端進(jin)入(ru)中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)，進(jin)行逆流烘干，物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)不斷(duan)地被反復揚進(jin)，呈進(jin)兩步退一(yi)步的行進(jin)方式，物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)既充分(fen)吸(xi)(xi)收內(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)散發的熱量，又(you)(you)吸(xi)(xi)收中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)的熱量，同時又(you)(you)延長(chang)了(le)干燥時間(jian)，物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)此達(da)到(dao)干燥狀(zhuang)態。物(wu)(wu)料(liao)(liao)(liao)行至中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)另(ling)一(yi)端而(er)落入(ru)外層(ceng)(ceng)(ceng)(ceng)(ceng)，物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)外層(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)內(nei)呈矩(ju)形(xing)多(duo)回路方式行進(jin)，達(da)到(dao)干燥效果(guo)的物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)熱風作用下快速行進(jin)排出滾(gun)筒(tong)，沒有達(da)到(dao)干燥效果(guo)的濕(shi)物(wu)(wu)料(liao)(liao)(liao)因(yin)自重而(er)不能(neng)快速行進(jin)，物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)此矩(ju)形(xing)抄板(ban)內(nei)進(jin)行充分(fen)干燥，由此達(da)到(dao)干燥效果(guo)，完成干燥過(guo)程。

設(she)備特點

該設備與其(qi)他干燥設備相比(bi)，生(sheng)產(chan)(chan)能(neng)力大，可連續操作； 結構簡單，操作方(fang)便(bian)；故障(zhang)少，維(wei)修費用(yong)低；適用(yong)范圍(wei)(wei)廣，流體阻(zu)力小，可以用(yong)它干燥顆料狀物(wu)料，對于那些附著(zhu)性大的物(wu)料也很有(you)利；操作彈性大，生(sheng)產(chan)(chan)上允(yun)許產(chan)(chan)品(pin)(pin)的流量有(you)較大波動范圍(wei)(wei)，不會影(ying)響產(chan)(chan)品(pin)(pin)的質量；清掃容(rong)易。