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。

它是燃燒(shao)(shao)煤的(de)(de)發電廠將煤磨成(cheng)(cheng)100微(wei)米以下(xia)的(de)(de)煤粉(fen)，用(yong)預熱空氣(qi)噴入爐膛經燃燒(shao)(shao)形成(cheng)(cheng)懸浮狀態，產(chan)生混雜有大(da)量不燃物(wu)的(de)(de)高溫煙(yan)氣(qi)，經集塵裝置捕集就(jiu)得到了粉(fen)煤灰。粉(fen)煤灰的(de)(de)化(hua)學組成(cheng)(cheng)與粘(zhan)土質相似(si)，主要成(cheng)(cheng)分為二(er)氧(yang)(yang)化(hua)硅、三氧(yang)(yang)化(hua)二(er)鋁、三氧(yang)(yang)化(hua)二(er)鐵(tie)、氧(yang)(yang)化(hua)鈣和未燃盡碳(tan)。

工作原理

濕粉(fen)(fen)煤灰(hui)由供(gong)料(liao)(liao)(liao)裝置進(jin)(jin)(jin)(jin)入三(san)層(ceng)(ceng)(ceng)滾(gun)筒(tong)的內(nei)(nei)層(ceng)(ceng)(ceng),實現順流(liu)烘干(gan), 粉(fen)(fen)煤灰(hui)在(zai)(zai)內(nei)(nei)層(ceng)(ceng)(ceng)的抄板(ban)(ban)下不(bu)斷(duan)抄起、散落呈螺旋行(xing)(xing)進(jin)(jin)(jin)(jin)式(shi)(shi)(shi)實現熱交換(huan)，物(wu)(wu)料(liao)(liao)(liao)移動至內(nei)(nei)層(ceng)(ceng)(ceng)的另(ling)一端(duan)進(jin)(jin)(jin)(jin)入中(zhong)(zhong)層(ceng)(ceng)(ceng)，進(jin)(jin)(jin)(jin)行(xing)(xing)逆流(liu)烘干(gan)，物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)不(bu)斷(duan)地被反復揚(yang)進(jin)(jin)(jin)(jin)，呈進(jin)(jin)(jin)(jin)兩步退一步的行(xing)(xing)進(jin)(jin)(jin)(jin)方(fang)式(shi)(shi)(shi)，物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)既(ji)充分吸收內(nei)(nei)層(ceng)(ceng)(ceng)滾(gun)筒(tong)散發的熱量，又(you)吸收中(zhong)(zhong)層(ceng)(ceng)(ceng)滾(gun)筒(tong)的熱量，同時又(you)延長了干(gan)燥(zao)(zao)(zao)時間，物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)此達(da)到(dao)干(gan)燥(zao)(zao)(zao)狀態。物(wu)(wu)料(liao)(liao)(liao)行(xing)(xing)至中(zhong)(zhong)層(ceng)(ceng)(ceng)另(ling)一端(duan)而落入外(wai)層(ceng)(ceng)(ceng)，物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)外(wai)層(ceng)(ceng)(ceng)滾(gun)筒(tong)內(nei)(nei)呈矩形多(duo)回(hui)路方(fang)式(shi)(shi)(shi)行(xing)(xing)進(jin)(jin)(jin)(jin)，達(da)到(dao)干(gan)燥(zao)(zao)(zao)效(xiao)果的物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)熱風作用下快速行(xing)(xing)進(jin)(jin)(jin)(jin)排出滾(gun)筒(tong)，沒有達(da)到(dao)干(gan)燥(zao)(zao)(zao)效(xiao)果的濕物(wu)(wu)料(liao)(liao)(liao)因(yin)自重而不(bu)能快速行(xing)(xing)進(jin)(jin)(jin)(jin)，物(wu)(wu)料(liao)(liao)(liao)在(zai)(zai)此矩形抄板(ban)(ban)內(nei)(nei)進(jin)(jin)(jin)(jin)行(xing)(xing)充分干(gan)燥(zao)(zao)(zao)，由此達(da)到(dao)干(gan)燥(zao)(zao)(zao)效(xiao)果，完成干(gan)燥(zao)(zao)(zao)過程。

設備特點

該設備與其他(ta)干燥設備相比，生產能力大(da)(da)，可連續(xu)操(cao)作； 結構簡(jian)單，操(cao)作方便；故障少，維修費用(yong)低(di)；適用(yong)范圍廣，流體(ti)阻力小，可以(yi)用(yong)它干燥顆料(liao)狀物料(liao)，對于那些附著性大(da)(da)的(de)(de)物料(liao)也(ye)很(hen)有利；操(cao)作彈性大(da)(da)，生產上允許產品(pin)的(de)(de)流量有較大(da)(da)波動范圍，不會影響產品(pin)的(de)(de)質(zhi)量；清(qing)掃容易。