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(ta)是燃(ran)燒煤(mei)的發電(dian)廠將煤(mei)磨成(cheng)(cheng)100微米以下(xia)的煤(mei)粉(fen)，用(yong)預熱空氣噴(pen)入爐膛經(jing)(jing)燃(ran)燒形(xing)成(cheng)(cheng)懸浮狀態(tai)，產生混雜有大量不燃(ran)物的高溫(wen)煙氣，經(jing)(jing)集塵裝置捕集就得到(dao)了粉(fen)煤(mei)灰(hui)(hui)。粉(fen)煤(mei)灰(hui)(hui)的化(hua)(hua)學組成(cheng)(cheng)與粘(zhan)土質(zhi)相(xiang)似(si)，主要成(cheng)(cheng)分為二(er)氧化(hua)(hua)硅、三(san)氧化(hua)(hua)二(er)鋁、三(san)氧化(hua)(hua)二(er)鐵(tie)、氧化(hua)(hua)鈣和未燃(ran)盡碳(tan)。

工作(zuo)原理

濕粉煤(mei)(mei)灰由(you)供料(liao)(liao)(liao)裝置(zhi)進(jin)(jin)(jin)(jin)(jin)入(ru)(ru)三層(ceng)(ceng)(ceng)滾筒(tong)的內(nei)層(ceng)(ceng)(ceng),實現順流(liu)烘(hong)干(gan), 粉煤(mei)(mei)灰在(zai)內(nei)層(ceng)(ceng)(ceng)的抄(chao)(chao)板下不斷抄(chao)(chao)起(qi)、散(san)落(luo)呈(cheng)螺旋行(xing)進(jin)(jin)(jin)(jin)(jin)式實現熱(re)交換，物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)移(yi)動(dong)至(zhi)內(nei)層(ceng)(ceng)(ceng)的另一端進(jin)(jin)(jin)(jin)(jin)入(ru)(ru)中(zhong)(zhong)層(ceng)(ceng)(ceng)，進(jin)(jin)(jin)(jin)(jin)行(xing)逆流(liu)烘(hong)干(gan)，物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)不斷地被反復揚進(jin)(jin)(jin)(jin)(jin)，呈(cheng)進(jin)(jin)(jin)(jin)(jin)兩步退(tui)一步的行(xing)進(jin)(jin)(jin)(jin)(jin)方式，物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)既(ji)充分吸(xi)收內(nei)層(ceng)(ceng)(ceng)滾筒(tong)散(san)發的熱(re)量，又(you)吸(xi)收中(zhong)(zhong)層(ceng)(ceng)(ceng)滾筒(tong)的熱(re)量，同(tong)時(shi)又(you)延長(chang)了干(gan)燥(zao)(zao)(zao)(zao)時(shi)間，物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)此達到(dao)干(gan)燥(zao)(zao)(zao)(zao)狀態。物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)行(xing)至(zhi)中(zhong)(zhong)層(ceng)(ceng)(ceng)另一端而(er)落(luo)入(ru)(ru)外(wai)層(ceng)(ceng)(ceng)，物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)外(wai)層(ceng)(ceng)(ceng)滾筒(tong)內(nei)呈(cheng)矩(ju)形多回路方式行(xing)進(jin)(jin)(jin)(jin)(jin)，達到(dao)干(gan)燥(zao)(zao)(zao)(zao)效(xiao)果的物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)熱(re)風作用(yong)下快(kuai)速行(xing)進(jin)(jin)(jin)(jin)(jin)排出滾筒(tong)，沒有達到(dao)干(gan)燥(zao)(zao)(zao)(zao)效(xiao)果的濕物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)因自重而(er)不能快(kuai)速行(xing)進(jin)(jin)(jin)(jin)(jin)，物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)此矩(ju)形抄(chao)(chao)板內(nei)進(jin)(jin)(jin)(jin)(jin)行(xing)充分干(gan)燥(zao)(zao)(zao)(zao)，由(you)此達到(dao)干(gan)燥(zao)(zao)(zao)(zao)效(xiao)果，完成干(gan)燥(zao)(zao)(zao)(zao)過程。

設(she)備特(te)點

該(gai)設備(bei)與其他干(gan)(gan)燥設備(bei)相比(bi)，生產能力(li)大(da)(da)，可連續操作(zuo)； 結構簡單(dan)，操作(zuo)方便；故障少，維修費用低；適用范(fan)圍廣，流(liu)體阻(zu)力(li)小，可以用它干(gan)(gan)燥顆料(liao)狀物料(liao)，對(dui)于那些(xie)附著性(xing)大(da)(da)的物料(liao)也很有(you)利；操作(zuo)彈性(xing)大(da)(da)，生產上允許(xu)產品(pin)的流(liu)量有(you)較大(da)(da)波動范(fan)圍，不會影響(xiang)產品(pin)的質量；清(qing)掃(sao)容(rong)易。