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(de)(de)發電廠將煤(mei)磨成100微(wei)(wei)米以(yi)下的(de)(de)煤(mei)粉(fen)，用(yong)預熱空氣噴(pen)入(ru)爐膛(tang)經(jing)燃燒形成懸浮狀態，產生混雜有大量不(bu)燃物的(de)(de)高溫煙(yan)氣，經(jing)集塵裝置捕(bu)集就得到了粉(fen)煤(mei)灰。粉(fen)煤(mei)灰的(de)(de)化(hua)(hua)(hua)(hua)學組成與粘土(tu)質相似，主要成分為二氧(yang)化(hua)(hua)(hua)(hua)硅、三氧(yang)化(hua)(hua)(hua)(hua)二鋁、三氧(yang)化(hua)(hua)(hua)(hua)二鐵、氧(yang)化(hua)(hua)(hua)(hua)鈣和未燃盡碳(tan)。

工(gong)作原理

濕粉煤(mei)灰由(you)(you)供料(liao)裝(zhuang)置進(jin)入(ru)三層(ceng)滾筒(tong)(tong)的內層(ceng),實現順流烘干(gan), 粉煤(mei)灰在內層(ceng)的抄板(ban)下(xia)(xia)不(bu)(bu)(bu)斷抄起(qi)、散落呈(cheng)(cheng)螺旋行(xing)(xing)(xing)(xing)(xing)進(jin)式(shi)(shi)實現熱(re)交換，物(wu)(wu)(wu)料(liao)移動至內層(ceng)的另一端進(jin)入(ru)中(zhong)層(ceng)，進(jin)行(xing)(xing)(xing)(xing)(xing)逆流烘干(gan)，物(wu)(wu)(wu)料(liao)在中(zhong)層(ceng)不(bu)(bu)(bu)斷地(di)被反(fan)復揚進(jin)，呈(cheng)(cheng)進(jin)兩步退一步的行(xing)(xing)(xing)(xing)(xing)進(jin)方式(shi)(shi)，物(wu)(wu)(wu)料(liao)在中(zhong)層(ceng)既充(chong)分(fen)吸收(shou)內層(ceng)滾筒(tong)(tong)散發的熱(re)量(liang)，又吸收(shou)中(zhong)層(ceng)滾筒(tong)(tong)的熱(re)量(liang)，同時又延長了干(gan)燥時間，物(wu)(wu)(wu)料(liao)在此達到干(gan)燥狀(zhuang)態。物(wu)(wu)(wu)料(liao)行(xing)(xing)(xing)(xing)(xing)至中(zhong)層(ceng)另一端而(er)落入(ru)外(wai)層(ceng)，物(wu)(wu)(wu)料(liao)在外(wai)層(ceng)滾筒(tong)(tong)內呈(cheng)(cheng)矩(ju)形多回路方式(shi)(shi)行(xing)(xing)(xing)(xing)(xing)進(jin)，達到干(gan)燥效(xiao)果的物(wu)(wu)(wu)料(liao)在熱(re)風作(zuo)用下(xia)(xia)快(kuai)速行(xing)(xing)(xing)(xing)(xing)進(jin)排(pai)出滾筒(tong)(tong)，沒有達到干(gan)燥效(xiao)果的濕物(wu)(wu)(wu)料(liao)因(yin)自重而(er)不(bu)(bu)(bu)能快(kuai)速行(xing)(xing)(xing)(xing)(xing)進(jin)，物(wu)(wu)(wu)料(liao)在此矩(ju)形抄板(ban)內進(jin)行(xing)(xing)(xing)(xing)(xing)充(chong)分(fen)干(gan)燥，由(you)(you)此達到干(gan)燥效(xiao)果，完成干(gan)燥過程。

設備(bei)特點

該設備(bei)與(yu)其他干(gan)(gan)燥設備(bei)相比(bi)，生產能力大(da)，可連續操(cao)作(zuo)； 結構簡單，操(cao)作(zuo)方便；故障少(shao)，維修費用低；適(shi)用范(fan)圍(wei)廣，流(liu)體阻力小，可以用它干(gan)(gan)燥顆料(liao)狀物料(liao)，對于那些附著(zhu)性大(da)的物料(liao)也很有利；操(cao)作(zuo)彈(dan)性大(da)，生產上允許產品的流(liu)量(liang)有較大(da)波(bo)動(dong)范(fan)圍(wei)，不會影(ying)響產品的質量(liang)；清掃容(rong)易。