粉煤灰烘干機是煤粉經高溫燃燒后形成的一種似火山灰質混合材料。
它是燃燒煤(mei)的發電廠將煤(mei)磨成(cheng)(cheng)100微米(mi)以(yi)下的煤(mei)粉(fen),用預熱空氣噴入爐膛經燃燒形(xing)成(cheng)(cheng)懸浮狀(zhuang)態,產(chan)生混雜(za)有(you)大(da)量不燃物的高溫煙氣,經集塵裝(zhuang)置(zhi)捕集就(jiu)得到了粉(fen)煤(mei)灰。粉(fen)煤(mei)灰的化(hua)(hua)(hua)學組(zu)成(cheng)(cheng)與粘土質相似(si),主要成(cheng)(cheng)分為二氧化(hua)(hua)(hua)硅、三氧化(hua)(hua)(hua)二鋁(lv)、三氧化(hua)(hua)(hua)二鐵(tie)、氧化(hua)(hua)(hua)鈣和(he)未燃盡碳。
工作原理(li)
濕粉煤灰由供(gong)料(liao)(liao)(liao)(liao)(liao)裝置進(jin)入三層(ceng)(ceng)(ceng)(ceng)滾(gun)(gun)筒(tong)的(de)(de)(de)內(nei)層(ceng)(ceng)(ceng)(ceng),實現順流烘(hong)干(gan)(gan), 粉煤灰在(zai)內(nei)層(ceng)(ceng)(ceng)(ceng)的(de)(de)(de)抄板下(xia)(xia)不(bu)斷抄起、散(san)落(luo)呈螺旋行(xing)(xing)(xing)進(jin)式(shi)實現熱(re)(re)(re)交(jiao)換(huan),物(wu)(wu)料(liao)(liao)(liao)(liao)(liao)移動至內(nei)層(ceng)(ceng)(ceng)(ceng)的(de)(de)(de)另(ling)一(yi)端(duan)進(jin)入中(zhong)層(ceng)(ceng)(ceng)(ceng),進(jin)行(xing)(xing)(xing)逆(ni)流烘(hong)干(gan)(gan),物(wu)(wu)料(liao)(liao)(liao)(liao)(liao)在(zai)中(zhong)層(ceng)(ceng)(ceng)(ceng)不(bu)斷地(di)被反復揚(yang)進(jin),呈進(jin)兩步(bu)退一(yi)步(bu)的(de)(de)(de)行(xing)(xing)(xing)進(jin)方式(shi),物(wu)(wu)料(liao)(liao)(liao)(liao)(liao)在(zai)中(zhong)層(ceng)(ceng)(ceng)(ceng)既充(chong)分(fen)吸收內(nei)層(ceng)(ceng)(ceng)(ceng)滾(gun)(gun)筒(tong)散(san)發(fa)的(de)(de)(de)熱(re)(re)(re)量,又吸收中(zhong)層(ceng)(ceng)(ceng)(ceng)滾(gun)(gun)筒(tong)的(de)(de)(de)熱(re)(re)(re)量,同時又延長了干(gan)(gan)燥(zao)時間,物(wu)(wu)料(liao)(liao)(liao)(liao)(liao)在(zai)此(ci)達到干(gan)(gan)燥(zao)狀(zhuang)態。物(wu)(wu)料(liao)(liao)(liao)(liao)(liao)行(xing)(xing)(xing)至中(zhong)層(ceng)(ceng)(ceng)(ceng)另(ling)一(yi)端(duan)而(er)(er)落(luo)入外層(ceng)(ceng)(ceng)(ceng),物(wu)(wu)料(liao)(liao)(liao)(liao)(liao)在(zai)外層(ceng)(ceng)(ceng)(ceng)滾(gun)(gun)筒(tong)內(nei)呈矩形多回(hui)路方式(shi)行(xing)(xing)(xing)進(jin),達到干(gan)(gan)燥(zao)效果的(de)(de)(de)物(wu)(wu)料(liao)(liao)(liao)(liao)(liao)在(zai)熱(re)(re)(re)風作用下(xia)(xia)快速行(xing)(xing)(xing)進(jin)排出滾(gun)(gun)筒(tong),沒有(you)達到干(gan)(gan)燥(zao)效果的(de)(de)(de)濕物(wu)(wu)料(liao)(liao)(liao)(liao)(liao)因自(zi)重而(er)(er)不(bu)能(neng)快速行(xing)(xing)(xing)進(jin),物(wu)(wu)料(liao)(liao)(liao)(liao)(liao)在(zai)此(ci)矩形抄板內(nei)進(jin)行(xing)(xing)(xing)充(chong)分(fen)干(gan)(gan)燥(zao),由此(ci)達到干(gan)(gan)燥(zao)效果,完成干(gan)(gan)燥(zao)過程。
設備特點(dian)
該設(she)備(bei)(bei)與其他(ta)干燥(zao)(zao)設(she)備(bei)(bei)相比(bi),生產(chan)能力大(da),可連(lian)續操作(zuo); 結構簡單,操作(zuo)方便;故障少,維修費(fei)用低;適用范(fan)圍廣,流體(ti)阻力小,可以用它干燥(zao)(zao)顆料(liao)狀物(wu)料(liao),對于那些附著性大(da)的(de)物(wu)料(liao)也很有(you)利;操作(zuo)彈性大(da),生產(chan)上允許產(chan)品(pin)的(de)流量有(you)較大(da)波動(dong)范(fan)圍,不(bu)會影響(xiang)產(chan)品(pin)的(de)質量;清掃容(rong)易。