煤(mei)粉(fen)灰烘干機是煤(mei)粉(fen)經高溫燃燒后形成(cheng)的一(yi)種似火山灰質混(hun)合材料。

它是燃(ran)(ran)燒煤的(de)(de)發(fa)電廠將煤磨成(cheng)100微(wei)米以下的(de)(de)煤粉，用預(yu)熱空氣噴入爐(lu)膛(tang)經燃(ran)(ran)燒形成(cheng)懸浮狀態，產生(sheng)混雜(za)有大量不燃(ran)(ran)物的(de)(de)高溫煙氣，經集(ji)塵裝置捕集(ji)就得到了粉煤灰。粉煤灰的(de)(de)化學組成(cheng)與粘土質相似，主(zhu)要(yao)成(cheng)分為二氧(yang)化硅、三(san)氧(yang)化二鋁、三(san)氧(yang)化二鐵、氧(yang)化鈣和未(wei)燃(ran)(ran)盡碳。

工作(zuo)原理

濕粉煤(mei)(mei)灰(hui)由(you)供料(liao)裝置(zhi)進(jin)(jin)(jin)(jin)(jin)入(ru)(ru)三(san)層(ceng)(ceng)滾筒(tong)的(de)內(nei)(nei)層(ceng)(ceng),實現(xian)順流(liu)烘干, 粉煤(mei)(mei)灰(hui)在(zai)(zai)(zai)內(nei)(nei)層(ceng)(ceng)的(de)抄板(ban)下不斷抄起、散落(luo)(luo)呈螺旋行(xing)(xing)(xing)進(jin)(jin)(jin)(jin)(jin)式(shi)(shi)實現(xian)熱交換，物(wu)(wu)(wu)(wu)料(liao)移動至內(nei)(nei)層(ceng)(ceng)的(de)另一端進(jin)(jin)(jin)(jin)(jin)入(ru)(ru)中(zhong)(zhong)層(ceng)(ceng)，進(jin)(jin)(jin)(jin)(jin)行(xing)(xing)(xing)逆流(liu)烘干，物(wu)(wu)(wu)(wu)料(liao)在(zai)(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)不斷地被反復(fu)揚進(jin)(jin)(jin)(jin)(jin)，呈進(jin)(jin)(jin)(jin)(jin)兩步(bu)退一步(bu)的(de)行(xing)(xing)(xing)進(jin)(jin)(jin)(jin)(jin)方(fang)(fang)式(shi)(shi)，物(wu)(wu)(wu)(wu)料(liao)在(zai)(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)既(ji)充分(fen)吸收內(nei)(nei)層(ceng)(ceng)滾筒(tong)散發的(de)熱量，又吸收中(zhong)(zhong)層(ceng)(ceng)滾筒(tong)的(de)熱量，同時又延長了干燥(zao)(zao)時間，物(wu)(wu)(wu)(wu)料(liao)在(zai)(zai)(zai)此達到(dao)(dao)干燥(zao)(zao)狀態。物(wu)(wu)(wu)(wu)料(liao)行(xing)(xing)(xing)至中(zhong)(zhong)層(ceng)(ceng)另一端而落(luo)(luo)入(ru)(ru)外層(ceng)(ceng)，物(wu)(wu)(wu)(wu)料(liao)在(zai)(zai)(zai)外層(ceng)(ceng)滾筒(tong)內(nei)(nei)呈矩形多回路方(fang)(fang)式(shi)(shi)行(xing)(xing)(xing)進(jin)(jin)(jin)(jin)(jin)，達到(dao)(dao)干燥(zao)(zao)效果(guo)(guo)(guo)的(de)物(wu)(wu)(wu)(wu)料(liao)在(zai)(zai)(zai)熱風(feng)作用下快速行(xing)(xing)(xing)進(jin)(jin)(jin)(jin)(jin)排出(chu)滾筒(tong)，沒有達到(dao)(dao)干燥(zao)(zao)效果(guo)(guo)(guo)的(de)濕物(wu)(wu)(wu)(wu)料(liao)因自重而不能快速行(xing)(xing)(xing)進(jin)(jin)(jin)(jin)(jin)，物(wu)(wu)(wu)(wu)料(liao)在(zai)(zai)(zai)此矩形抄板(ban)內(nei)(nei)進(jin)(jin)(jin)(jin)(jin)行(xing)(xing)(xing)充分(fen)干燥(zao)(zao)，由(you)此達到(dao)(dao)干燥(zao)(zao)效果(guo)(guo)(guo)，完成干燥(zao)(zao)過程。

設備特點

該(gai)設備(bei)與其他干燥設備(bei)相比，生產(chan)能力大(da)，可(ke)連(lian)續操作； 結構簡單(dan)，操作方便；故障少(shao)，維修費用(yong)低；適(shi)用(yong)范圍廣，流(liu)體阻力小，可(ke)以用(yong)它干燥顆(ke)料狀物(wu)料，對(dui)于那些附(fu)著(zhu)性大(da)的物(wu)料也很有利；操作彈(dan)性大(da)，生產(chan)上(shang)允許產(chan)品的流(liu)量(liang)有較大(da)波(bo)動范圍，不會(hui)影響(xiang)產(chan)品的質量(liang)；清掃容易。