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)(de)發(fa)電廠將煤(mei)(mei)磨成(cheng)100微米以下的(de)(de)煤(mei)(mei)粉，用(yong)預熱空(kong)氣(qi)噴(pen)入爐膛經(jing)(jing)燃(ran)燒(shao)形成(cheng)懸(xuan)浮狀態，產生(sheng)混雜有大量不燃(ran)物的(de)(de)高(gao)溫煙氣(qi)，經(jing)(jing)集塵裝置捕集就(jiu)得到(dao)了粉煤(mei)(mei)灰(hui)。粉煤(mei)(mei)灰(hui)的(de)(de)化學組成(cheng)與粘土質相似，主要成(cheng)分為二(er)(er)氧(yang)化硅(gui)、三氧(yang)化二(er)(er)鋁、三氧(yang)化二(er)(er)鐵、氧(yang)化鈣(gai)和未燃(ran)盡(jin)碳。

工作原理

濕粉煤灰由(you)供(gong)料裝(zhuang)置進(jin)入(ru)三層(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)的(de)內(nei)(nei)(nei)層(ceng)(ceng)(ceng)(ceng),實現順流(liu)烘干(gan)(gan), 粉煤灰在(zai)(zai)(zai)內(nei)(nei)(nei)層(ceng)(ceng)(ceng)(ceng)的(de)抄(chao)板下不斷抄(chao)起、散(san)落呈螺旋行(xing)(xing)(xing)進(jin)式實現熱(re)交換，物(wu)(wu)(wu)料移(yi)動(dong)至(zhi)內(nei)(nei)(nei)層(ceng)(ceng)(ceng)(ceng)的(de)另(ling)一(yi)端進(jin)入(ru)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)，進(jin)行(xing)(xing)(xing)逆流(liu)烘干(gan)(gan)，物(wu)(wu)(wu)料在(zai)(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)不斷地(di)被反復揚進(jin)，呈進(jin)兩步退一(yi)步的(de)行(xing)(xing)(xing)進(jin)方(fang)式，物(wu)(wu)(wu)料在(zai)(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)既充分(fen)(fen)吸收(shou)內(nei)(nei)(nei)層(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)散(san)發的(de)熱(re)量，又(you)吸收(shou)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)的(de)熱(re)量，同時又(you)延長(chang)了干(gan)(gan)燥時間，物(wu)(wu)(wu)料在(zai)(zai)(zai)此達(da)到(dao)干(gan)(gan)燥狀態(tai)。物(wu)(wu)(wu)料行(xing)(xing)(xing)至(zhi)中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)另(ling)一(yi)端而落入(ru)外(wai)層(ceng)(ceng)(ceng)(ceng)，物(wu)(wu)(wu)料在(zai)(zai)(zai)外(wai)層(ceng)(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)內(nei)(nei)(nei)呈矩形(xing)多(duo)回路方(fang)式行(xing)(xing)(xing)進(jin)，達(da)到(dao)干(gan)(gan)燥效果的(de)物(wu)(wu)(wu)料在(zai)(zai)(zai)熱(re)風作用下快(kuai)速行(xing)(xing)(xing)進(jin)排出滾(gun)筒(tong)(tong)，沒有達(da)到(dao)干(gan)(gan)燥效果的(de)濕物(wu)(wu)(wu)料因自(zi)重(zhong)而不能(neng)快(kuai)速行(xing)(xing)(xing)進(jin)，物(wu)(wu)(wu)料在(zai)(zai)(zai)此矩形(xing)抄(chao)板內(nei)(nei)(nei)進(jin)行(xing)(xing)(xing)充分(fen)(fen)干(gan)(gan)燥，由(you)此達(da)到(dao)干(gan)(gan)燥效果，完成干(gan)(gan)燥過程。

設備特點(dian)

該設(she)備與(yu)其他干(gan)燥(zao)設(she)備相比，生(sheng)產(chan)能力(li)大(da)，可(ke)連續操(cao)作(zuo)(zuo)； 結構(gou)簡(jian)單，操(cao)作(zuo)(zuo)方便；故障少，維修費用(yong)低；適用(yong)范(fan)圍(wei)廣，流體阻力(li)小，可(ke)以用(yong)它干(gan)燥(zao)顆料狀物(wu)料，對于那些附著性大(da)的物(wu)料也很有(you)利；操(cao)作(zuo)(zuo)彈(dan)性大(da)，生(sheng)產(chan)上允許產(chan)品(pin)的流量(liang)有(you)較大(da)波(bo)動范(fan)圍(wei)，不會影響產(chan)品(pin)的質(zhi)量(liang)；清(qing)掃容易。