煤粉灰(hui)烘干機是煤粉經高溫(wen)燃(ran)燒后(hou)形成的(de)一種(zhong)似火山灰(hui)質混合材料。

它是(shi)燃(ran)燒煤(mei)的發電(dian)廠(chang)將煤(mei)磨成100微(wei)米以下的煤(mei)粉(fen)，用預熱空氣噴(pen)入(ru)爐膛經燃(ran)燒形成懸浮(fu)狀態，產生混雜有大(da)量(liang)不燃(ran)物(wu)的高溫煙氣，經集(ji)塵裝(zhuang)置捕集(ji)就得到(dao)了粉(fen)煤(mei)灰。粉(fen)煤(mei)灰的化(hua)學(xue)組成與粘土質相似，主要(yao)成分(fen)為二氧(yang)化(hua)硅、三氧(yang)化(hua)二鋁、三氧(yang)化(hua)二鐵、氧(yang)化(hua)鈣和未燃(ran)盡(jin)碳(tan)。

工作原理

濕粉(fen)(fen)煤(mei)灰由供料(liao)裝置進(jin)入(ru)三層(ceng)(ceng)(ceng)(ceng)滾(gun)(gun)(gun)筒(tong)(tong)(tong)的內層(ceng)(ceng)(ceng)(ceng),實現順(shun)流(liu)(liu)烘干(gan)(gan)(gan), 粉(fen)(fen)煤(mei)灰在(zai)內層(ceng)(ceng)(ceng)(ceng)的抄板(ban)下(xia)不斷抄起、散(san)落呈(cheng)螺(luo)旋行(xing)進(jin)式實現熱交換，物(wu)(wu)(wu)料(liao)移動至(zhi)(zhi)內層(ceng)(ceng)(ceng)(ceng)的另(ling)一(yi)端進(jin)入(ru)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)，進(jin)行(xing)逆(ni)流(liu)(liu)烘干(gan)(gan)(gan)，物(wu)(wu)(wu)料(liao)在(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)不斷地被反復揚進(jin)，呈(cheng)進(jin)兩步退一(yi)步的行(xing)進(jin)方式，物(wu)(wu)(wu)料(liao)在(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)既充(chong)(chong)分吸收內層(ceng)(ceng)(ceng)(ceng)滾(gun)(gun)(gun)筒(tong)(tong)(tong)散(san)發的熱量，又吸收中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)滾(gun)(gun)(gun)筒(tong)(tong)(tong)的熱量，同時又延長了干(gan)(gan)(gan)燥(zao)時間，物(wu)(wu)(wu)料(liao)在(zai)此(ci)達到干(gan)(gan)(gan)燥(zao)狀態。物(wu)(wu)(wu)料(liao)行(xing)至(zhi)(zhi)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)另(ling)一(yi)端而(er)落入(ru)外層(ceng)(ceng)(ceng)(ceng)，物(wu)(wu)(wu)料(liao)在(zai)外層(ceng)(ceng)(ceng)(ceng)滾(gun)(gun)(gun)筒(tong)(tong)(tong)內呈(cheng)矩形多回路方式行(xing)進(jin)，達到干(gan)(gan)(gan)燥(zao)效(xiao)果(guo)(guo)的物(wu)(wu)(wu)料(liao)在(zai)熱風作用(yong)下(xia)快速(su)行(xing)進(jin)排出滾(gun)(gun)(gun)筒(tong)(tong)(tong)，沒有(you)達到干(gan)(gan)(gan)燥(zao)效(xiao)果(guo)(guo)的濕物(wu)(wu)(wu)料(liao)因自重而(er)不能快速(su)行(xing)進(jin)，物(wu)(wu)(wu)料(liao)在(zai)此(ci)矩形抄板(ban)內進(jin)行(xing)充(chong)(chong)分干(gan)(gan)(gan)燥(zao)，由此(ci)達到干(gan)(gan)(gan)燥(zao)效(xiao)果(guo)(guo)，完成干(gan)(gan)(gan)燥(zao)過程。

設備特點

該設(she)備與其(qi)他干燥設(she)備相比，生(sheng)產能力大，可(ke)連續(xu)操(cao)(cao)作(zuo)； 結構簡單，操(cao)(cao)作(zuo)方便；故(gu)障少，維修(xiu)費用低；適用范(fan)圍廣，流體阻力小(xiao)，可(ke)以用它干燥顆料(liao)狀物料(liao)，對于那些附著性大的物料(liao)也很(hen)有(you)利；操(cao)(cao)作(zuo)彈性大，生(sheng)產上允(yun)許產品的流量有(you)較大波動范(fan)圍，不會影響產品的質(zhi)量；清掃容易。