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)(ran)燒煤(mei)(mei)的(de)發(fa)電(dian)廠將煤(mei)(mei)磨成100微(wei)米(mi)以下的(de)煤(mei)(mei)粉(fen)，用(yong)預熱空(kong)氣噴入爐膛(tang)經燃(ran)(ran)燒形成懸浮狀(zhuang)態，產(chan)生混(hun)雜(za)有大量不燃(ran)(ran)物的(de)高(gao)溫(wen)煙氣，經集塵(chen)裝置捕集就(jiu)得到了粉(fen)煤(mei)(mei)灰。粉(fen)煤(mei)(mei)灰的(de)化(hua)(hua)學(xue)組(zu)成與粘土(tu)質相似(si)，主要成分為二氧(yang)化(hua)(hua)硅、三氧(yang)化(hua)(hua)二鋁、三氧(yang)化(hua)(hua)二鐵、氧(yang)化(hua)(hua)鈣(gai)和未燃(ran)(ran)盡碳。

工作原理(li)

濕粉(fen)煤(mei)灰由供(gong)料(liao)(liao)(liao)裝置進(jin)(jin)入三層(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)的內(nei)(nei)(nei)層(ceng)(ceng)(ceng)(ceng)(ceng),實現(xian)順流烘干(gan)(gan), 粉(fen)煤(mei)灰在(zai)內(nei)(nei)(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)的抄(chao)板(ban)下不斷抄(chao)起(qi)、散落(luo)呈螺(luo)旋行(xing)(xing)(xing)(xing)進(jin)(jin)式實現(xian)熱(re)交(jiao)換，物(wu)料(liao)(liao)(liao)移動(dong)至(zhi)內(nei)(nei)(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)的另一(yi)端(duan)進(jin)(jin)入中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)，進(jin)(jin)行(xing)(xing)(xing)(xing)逆(ni)流烘干(gan)(gan)，物(wu)料(liao)(liao)(liao)在(zai)中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)不斷地被(bei)反復揚(yang)進(jin)(jin)，呈進(jin)(jin)兩步退(tui)一(yi)步的行(xing)(xing)(xing)(xing)進(jin)(jin)方式，物(wu)料(liao)(liao)(liao)在(zai)中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)既(ji)充分(fen)(fen)吸(xi)收(shou)內(nei)(nei)(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)散發的熱(re)量，又吸(xi)收(shou)中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)的熱(re)量，同(tong)時又延長了干(gan)(gan)燥(zao)時間(jian)，物(wu)料(liao)(liao)(liao)在(zai)此(ci)(ci)達(da)到干(gan)(gan)燥(zao)狀態。物(wu)料(liao)(liao)(liao)行(xing)(xing)(xing)(xing)至(zhi)中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)另一(yi)端(duan)而(er)落(luo)入外層(ceng)(ceng)(ceng)(ceng)(ceng)，物(wu)料(liao)(liao)(liao)在(zai)外層(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)內(nei)(nei)(nei)呈矩(ju)形多(duo)回路方式行(xing)(xing)(xing)(xing)進(jin)(jin)，達(da)到干(gan)(gan)燥(zao)效果的物(wu)料(liao)(liao)(liao)在(zai)熱(re)風作(zuo)用下快速行(xing)(xing)(xing)(xing)進(jin)(jin)排出滾(gun)筒(tong)，沒有(you)達(da)到干(gan)(gan)燥(zao)效果的濕物(wu)料(liao)(liao)(liao)因自重而(er)不能快速行(xing)(xing)(xing)(xing)進(jin)(jin)，物(wu)料(liao)(liao)(liao)在(zai)此(ci)(ci)矩(ju)形抄(chao)板(ban)內(nei)(nei)(nei)進(jin)(jin)行(xing)(xing)(xing)(xing)充分(fen)(fen)干(gan)(gan)燥(zao)，由此(ci)(ci)達(da)到干(gan)(gan)燥(zao)效果，完(wan)成干(gan)(gan)燥(zao)過(guo)程。

設備特點

該設備(bei)與(yu)其他干燥設備(bei)相(xiang)比(bi)，生產能力(li)大(da)(da)，可(ke)連續操(cao)作(zuo)； 結(jie)構(gou)簡單(dan)，操(cao)作(zuo)方(fang)便(bian)；故障(zhang)少，維(wei)修費(fei)用(yong)(yong)低；適用(yong)(yong)范圍(wei)廣，流(liu)體阻力(li)小，可(ke)以用(yong)(yong)它干燥顆(ke)料(liao)狀物料(liao)，對(dui)于那些附著(zhu)性(xing)大(da)(da)的物料(liao)也很有(you)利(li)；操(cao)作(zuo)彈性(xing)大(da)(da)，生產上允許產品(pin)的流(liu)量有(you)較大(da)(da)波動范圍(wei)，不會影(ying)響產品(pin)的質量；清(qing)掃容易。