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(ran)燒煤(mei)(mei)的發電廠將煤(mei)(mei)磨(mo)成(cheng)100微米(mi)以下的煤(mei)(mei)粉，用預熱空氣噴入爐膛經燃(ran)燒形成(cheng)懸浮狀態，產生混雜有大量不燃(ran)物的高溫煙氣，經集(ji)塵裝置捕集(ji)就得(de)到了粉煤(mei)(mei)灰。粉煤(mei)(mei)灰的化(hua)(hua)(hua)學(xue)組成(cheng)與粘土質相似，主要成(cheng)分為二(er)氧(yang)化(hua)(hua)(hua)硅、三(san)氧(yang)化(hua)(hua)(hua)二(er)鋁、三(san)氧(yang)化(hua)(hua)(hua)二(er)鐵、氧(yang)化(hua)(hua)(hua)鈣和(he)未燃(ran)盡碳。

工作原理

濕粉(fen)煤(mei)灰由供(gong)料裝(zhuang)置進(jin)(jin)(jin)(jin)入三(san)層(ceng)(ceng)滾(gun)(gun)(gun)筒(tong)(tong)(tong)的(de)(de)內(nei)層(ceng)(ceng),實(shi)現順流(liu)烘干(gan), 粉(fen)煤(mei)灰在(zai)(zai)內(nei)層(ceng)(ceng)的(de)(de)抄(chao)板下不(bu)斷抄(chao)起、散(san)落呈螺旋行(xing)(xing)進(jin)(jin)(jin)(jin)式(shi)(shi)實(shi)現熱(re)交換，物(wu)(wu)料移動至(zhi)內(nei)層(ceng)(ceng)的(de)(de)另一端進(jin)(jin)(jin)(jin)入中(zhong)(zhong)層(ceng)(ceng)，進(jin)(jin)(jin)(jin)行(xing)(xing)逆流(liu)烘干(gan)，物(wu)(wu)料在(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)不(bu)斷地被反復(fu)揚進(jin)(jin)(jin)(jin)，呈進(jin)(jin)(jin)(jin)兩步退(tui)一步的(de)(de)行(xing)(xing)進(jin)(jin)(jin)(jin)方式(shi)(shi)，物(wu)(wu)料在(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)既充分吸收內(nei)層(ceng)(ceng)滾(gun)(gun)(gun)筒(tong)(tong)(tong)散(san)發的(de)(de)熱(re)量，又吸收中(zhong)(zhong)層(ceng)(ceng)滾(gun)(gun)(gun)筒(tong)(tong)(tong)的(de)(de)熱(re)量，同時又延長了干(gan)燥(zao)時間(jian)，物(wu)(wu)料在(zai)(zai)此(ci)達(da)(da)到(dao)干(gan)燥(zao)狀態(tai)。物(wu)(wu)料行(xing)(xing)至(zhi)中(zhong)(zhong)層(ceng)(ceng)另一端而落入外(wai)層(ceng)(ceng)，物(wu)(wu)料在(zai)(zai)外(wai)層(ceng)(ceng)滾(gun)(gun)(gun)筒(tong)(tong)(tong)內(nei)呈矩(ju)(ju)形(xing)(xing)多回(hui)路方式(shi)(shi)行(xing)(xing)進(jin)(jin)(jin)(jin)，達(da)(da)到(dao)干(gan)燥(zao)效果的(de)(de)物(wu)(wu)料在(zai)(zai)熱(re)風作用(yong)下快速(su)行(xing)(xing)進(jin)(jin)(jin)(jin)排出(chu)滾(gun)(gun)(gun)筒(tong)(tong)(tong)，沒有達(da)(da)到(dao)干(gan)燥(zao)效果的(de)(de)濕物(wu)(wu)料因自重而不(bu)能快速(su)行(xing)(xing)進(jin)(jin)(jin)(jin)，物(wu)(wu)料在(zai)(zai)此(ci)矩(ju)(ju)形(xing)(xing)抄(chao)板內(nei)進(jin)(jin)(jin)(jin)行(xing)(xing)充分干(gan)燥(zao)，由此(ci)達(da)(da)到(dao)干(gan)燥(zao)效果，完成干(gan)燥(zao)過程。

設備特(te)點

該設(she)備與其他干(gan)燥設(she)備相(xiang)比，生產(chan)(chan)能(neng)力大(da)，可(ke)連續操(cao)(cao)作(zuo)； 結構(gou)簡單，操(cao)(cao)作(zuo)方便；故障少(shao)，維修費(fei)用低(di)；適用范(fan)(fan)圍廣，流體阻力小，可(ke)以用它干(gan)燥顆料狀物(wu)料，對于那些附著性大(da)的物(wu)料也很有利；操(cao)(cao)作(zuo)彈(dan)性大(da)，生產(chan)(chan)上(shang)允許產(chan)(chan)品的流量有較大(da)波動范(fan)(fan)圍，不(bu)會影(ying)響產(chan)(chan)品的質量；清掃容(rong)易。