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(shao)煤(mei)的發(fa)電廠將煤(mei)磨成(cheng)100微米(mi)以下(xia)的煤(mei)粉，用(yong)預熱(re)空氣(qi)(qi)噴入(ru)爐膛(tang)經(jing)(jing)燃(ran)燒(shao)形成(cheng)懸(xuan)浮狀(zhuang)態，產生混雜(za)有大量不燃(ran)物的高溫煙氣(qi)(qi)，經(jing)(jing)集塵裝(zhuang)置(zhi)捕集就得(de)到了粉煤(mei)灰(hui)。粉煤(mei)灰(hui)的化(hua)(hua)學組成(cheng)與粘(zhan)土質相似，主要成(cheng)分為(wei)二(er)氧(yang)(yang)化(hua)(hua)硅、三(san)氧(yang)(yang)化(hua)(hua)二(er)鋁、三(san)氧(yang)(yang)化(hua)(hua)二(er)鐵、氧(yang)(yang)化(hua)(hua)鈣和未燃(ran)盡碳。

工作原理(li)

濕(shi)粉(fen)煤灰由供料(liao)(liao)裝置(zhi)進(jin)(jin)入三層(ceng)(ceng)滾筒(tong)的(de)(de)內層(ceng)(ceng),實(shi)現順流烘干(gan), 粉(fen)煤灰在(zai)內層(ceng)(ceng)的(de)(de)抄(chao)(chao)板下不斷抄(chao)(chao)起、散落呈(cheng)(cheng)螺旋(xuan)行(xing)(xing)進(jin)(jin)式實(shi)現熱(re)交(jiao)換，物(wu)(wu)(wu)料(liao)(liao)移動至內層(ceng)(ceng)的(de)(de)另一(yi)端進(jin)(jin)入中(zhong)(zhong)(zhong)層(ceng)(ceng)，進(jin)(jin)行(xing)(xing)逆流烘干(gan)，物(wu)(wu)(wu)料(liao)(liao)在(zai)中(zhong)(zhong)(zhong)層(ceng)(ceng)不斷地被反(fan)復揚進(jin)(jin)，呈(cheng)(cheng)進(jin)(jin)兩步退一(yi)步的(de)(de)行(xing)(xing)進(jin)(jin)方式，物(wu)(wu)(wu)料(liao)(liao)在(zai)中(zhong)(zhong)(zhong)層(ceng)(ceng)既充(chong)分吸收內層(ceng)(ceng)滾筒(tong)散發的(de)(de)熱(re)量，又(you)吸收中(zhong)(zhong)(zhong)層(ceng)(ceng)滾筒(tong)的(de)(de)熱(re)量，同時又(you)延長(chang)了干(gan)燥(zao)時間，物(wu)(wu)(wu)料(liao)(liao)在(zai)此(ci)達(da)到(dao)(dao)干(gan)燥(zao)狀態。物(wu)(wu)(wu)料(liao)(liao)行(xing)(xing)至中(zhong)(zhong)(zhong)層(ceng)(ceng)另一(yi)端而落入外層(ceng)(ceng)，物(wu)(wu)(wu)料(liao)(liao)在(zai)外層(ceng)(ceng)滾筒(tong)內呈(cheng)(cheng)矩形多回(hui)路方式行(xing)(xing)進(jin)(jin)，達(da)到(dao)(dao)干(gan)燥(zao)效(xiao)果的(de)(de)物(wu)(wu)(wu)料(liao)(liao)在(zai)熱(re)風(feng)作用(yong)下快速行(xing)(xing)進(jin)(jin)排(pai)出(chu)滾筒(tong)，沒有達(da)到(dao)(dao)干(gan)燥(zao)效(xiao)果的(de)(de)濕(shi)物(wu)(wu)(wu)料(liao)(liao)因(yin)自重而不能(neng)快速行(xing)(xing)進(jin)(jin)，物(wu)(wu)(wu)料(liao)(liao)在(zai)此(ci)矩形抄(chao)(chao)板內進(jin)(jin)行(xing)(xing)充(chong)分干(gan)燥(zao)，由此(ci)達(da)到(dao)(dao)干(gan)燥(zao)效(xiao)果，完成(cheng)干(gan)燥(zao)過程。

設(she)備特點

該設備(bei)與其他(ta)干燥設備(bei)相比，生產(chan)能力(li)大，可連續操(cao)作； 結構簡單(dan)，操(cao)作方便；故(gu)障少，維修費用(yong)低(di)；適(shi)用(yong)范圍廣(guang)，流體阻力(li)小，可以用(yong)它干燥顆料狀物(wu)料，對于那些附著性大的物(wu)料也很有利(li)；操(cao)作彈(dan)性大，生產(chan)上允許產(chan)品的流量有較大波動范圍，不會影(ying)響產(chan)品的質量；清掃容(rong)易。