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)(mei)的(de)發電廠將煤(mei)(mei)磨成100微米以下的(de)煤(mei)(mei)粉(fen)(fen)，用(yong)預熱空氣噴入爐膛經(jing)燃(ran)燒(shao)形(xing)成懸浮狀(zhuang)態，產生混雜有大量不燃(ran)物的(de)高溫煙(yan)氣，經(jing)集塵(chen)裝置捕集就得到了粉(fen)(fen)煤(mei)(mei)灰(hui)。粉(fen)(fen)煤(mei)(mei)灰(hui)的(de)化(hua)學組成與(yu)粘土質相似，主要(yao)成分(fen)為二氧(yang)化(hua)硅(gui)、三(san)(san)氧(yang)化(hua)二鋁、三(san)(san)氧(yang)化(hua)二鐵、氧(yang)化(hua)鈣(gai)和未燃(ran)盡碳。

工作原理(li)

濕(shi)粉煤(mei)灰(hui)由供料(liao)(liao)裝置進(jin)(jin)(jin)(jin)(jin)入三層(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)的(de)內(nei)(nei)層(ceng)(ceng)(ceng)(ceng),實(shi)現順流(liu)烘(hong)干(gan)(gan), 粉煤(mei)灰(hui)在(zai)(zai)內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)的(de)抄(chao)板(ban)下(xia)不(bu)(bu)斷(duan)抄(chao)起(qi)、散(san)落呈(cheng)(cheng)(cheng)螺(luo)旋(xuan)行(xing)(xing)進(jin)(jin)(jin)(jin)(jin)式實(shi)現熱交換，物(wu)(wu)料(liao)(liao)移動至內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)的(de)另一(yi)端進(jin)(jin)(jin)(jin)(jin)入中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)，進(jin)(jin)(jin)(jin)(jin)行(xing)(xing)逆(ni)流(liu)烘(hong)干(gan)(gan)，物(wu)(wu)料(liao)(liao)在(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)不(bu)(bu)斷(duan)地被(bei)反(fan)復揚進(jin)(jin)(jin)(jin)(jin)，呈(cheng)(cheng)(cheng)進(jin)(jin)(jin)(jin)(jin)兩步退一(yi)步的(de)行(xing)(xing)進(jin)(jin)(jin)(jin)(jin)方式，物(wu)(wu)料(liao)(liao)在(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)既充分吸收內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)散(san)發的(de)熱量(liang)(liang)，又吸收中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)的(de)熱量(liang)(liang)，同時(shi)又延長了干(gan)(gan)燥(zao)(zao)(zao)時(shi)間，物(wu)(wu)料(liao)(liao)在(zai)(zai)此達到干(gan)(gan)燥(zao)(zao)(zao)狀態。物(wu)(wu)料(liao)(liao)行(xing)(xing)至中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)另一(yi)端而落入外(wai)層(ceng)(ceng)(ceng)(ceng)，物(wu)(wu)料(liao)(liao)在(zai)(zai)外(wai)層(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)內(nei)(nei)呈(cheng)(cheng)(cheng)矩(ju)(ju)形(xing)(xing)多回路方式行(xing)(xing)進(jin)(jin)(jin)(jin)(jin)，達到干(gan)(gan)燥(zao)(zao)(zao)效(xiao)(xiao)果的(de)物(wu)(wu)料(liao)(liao)在(zai)(zai)熱風作用下(xia)快速(su)行(xing)(xing)進(jin)(jin)(jin)(jin)(jin)排出滾(gun)筒(tong)，沒(mei)有達到干(gan)(gan)燥(zao)(zao)(zao)效(xiao)(xiao)果的(de)濕(shi)物(wu)(wu)料(liao)(liao)因自重而不(bu)(bu)能快速(su)行(xing)(xing)進(jin)(jin)(jin)(jin)(jin)，物(wu)(wu)料(liao)(liao)在(zai)(zai)此矩(ju)(ju)形(xing)(xing)抄(chao)板(ban)內(nei)(nei)進(jin)(jin)(jin)(jin)(jin)行(xing)(xing)充分干(gan)(gan)燥(zao)(zao)(zao)，由此達到干(gan)(gan)燥(zao)(zao)(zao)效(xiao)(xiao)果，完成干(gan)(gan)燥(zao)(zao)(zao)過程。

設備特點

該設備與其他(ta)干燥設備相比(bi)，生產(chan)能力大，可連續操(cao)作； 結構簡單，操(cao)作方(fang)便；故障少，維修費用低(di)；適用范圍(wei)廣，流體阻力小(xiao)，可以(yi)用它(ta)干燥顆料狀(zhuang)物(wu)料，對于那些附著性(xing)大的物(wu)料也很有利；操(cao)作彈性(xing)大，生產(chan)上(shang)允許產(chan)品(pin)的流量有較大波動范圍(wei)，不會影(ying)響產(chan)品(pin)的質量；清(qing)掃容易。