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。

它是燃燒煤的(de)(de)發電(dian)廠將煤磨(mo)成(cheng)(cheng)100微(wei)(wei)米以(yi)下的(de)(de)煤粉(fen)，用預熱空氣噴入爐膛經燃燒形成(cheng)(cheng)懸浮狀態，產生混雜有大量(liang)不燃物的(de)(de)高溫煙氣，經集(ji)塵(chen)裝(zhuang)置捕集(ji)就得到了粉(fen)煤灰(hui)。粉(fen)煤灰(hui)的(de)(de)化(hua)(hua)學組成(cheng)(cheng)與粘土質相似，主(zhu)要成(cheng)(cheng)分為二氧化(hua)(hua)硅(gui)、三氧化(hua)(hua)二鋁、三氧化(hua)(hua)二鐵、氧化(hua)(hua)鈣和(he)未(wei)燃盡(jin)碳。

工(gong)作原(yuan)理

濕粉煤灰由(you)(you)供料(liao)裝(zhuang)置進(jin)入三層(ceng)(ceng)(ceng)滾筒(tong)(tong)的內(nei)層(ceng)(ceng)(ceng),實(shi)現(xian)順流(liu)烘(hong)干(gan)(gan), 粉煤灰在(zai)(zai)(zai)內(nei)層(ceng)(ceng)(ceng)的抄板下(xia)不斷(duan)(duan)抄起、散落呈(cheng)螺旋(xuan)行(xing)(xing)進(jin)式(shi)(shi)實(shi)現(xian)熱交(jiao)換(huan)，物(wu)料(liao)移(yi)動至內(nei)層(ceng)(ceng)(ceng)的另一端(duan)進(jin)入中(zhong)(zhong)層(ceng)(ceng)(ceng)，進(jin)行(xing)(xing)逆流(liu)烘(hong)干(gan)(gan)，物(wu)料(liao)在(zai)(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)不斷(duan)(duan)地被反復揚進(jin)，呈(cheng)進(jin)兩步(bu)退一步(bu)的行(xing)(xing)進(jin)方式(shi)(shi)，物(wu)料(liao)在(zai)(zai)(zai)中(zhong)(zhong)層(ceng)(ceng)(ceng)既(ji)充分(fen)吸收內(nei)層(ceng)(ceng)(ceng)滾筒(tong)(tong)散發的熱量，又吸收中(zhong)(zhong)層(ceng)(ceng)(ceng)滾筒(tong)(tong)的熱量，同時又延長了干(gan)(gan)燥(zao)(zao)時間，物(wu)料(liao)在(zai)(zai)(zai)此達到干(gan)(gan)燥(zao)(zao)狀態。物(wu)料(liao)行(xing)(xing)至中(zhong)(zhong)層(ceng)(ceng)(ceng)另一端(duan)而(er)落入外層(ceng)(ceng)(ceng)，物(wu)料(liao)在(zai)(zai)(zai)外層(ceng)(ceng)(ceng)滾筒(tong)(tong)內(nei)呈(cheng)矩(ju)形多回路方式(shi)(shi)行(xing)(xing)進(jin)，達到干(gan)(gan)燥(zao)(zao)效果的物(wu)料(liao)在(zai)(zai)(zai)熱風作(zuo)用(yong)下(xia)快(kuai)速(su)行(xing)(xing)進(jin)排出(chu)滾筒(tong)(tong)，沒有(you)達到干(gan)(gan)燥(zao)(zao)效果的濕物(wu)料(liao)因自(zi)重而(er)不能快(kuai)速(su)行(xing)(xing)進(jin)，物(wu)料(liao)在(zai)(zai)(zai)此矩(ju)形抄板內(nei)進(jin)行(xing)(xing)充分(fen)干(gan)(gan)燥(zao)(zao)，由(you)(you)此達到干(gan)(gan)燥(zao)(zao)效果，完成干(gan)(gan)燥(zao)(zao)過程(cheng)。

設備特點

該設(she)(she)備與其他干燥設(she)(she)備相比，生(sheng)產能力大(da)，可連(lian)續操(cao)作； 結(jie)構簡單，操(cao)作方便；故障少，維修費(fei)用(yong)(yong)低；適用(yong)(yong)范(fan)圍(wei)(wei)廣，流體阻力小，可以用(yong)(yong)它干燥顆料狀物料，對(dui)于那些附著性大(da)的(de)(de)物料也很有(you)利；操(cao)作彈性大(da)，生(sheng)產上允許產品(pin)的(de)(de)流量(liang)有(you)較(jiao)大(da)波動(dong)范(fan)圍(wei)(wei)，不會(hui)影響產品(pin)的(de)(de)質量(liang)；清(qing)掃容易(yi)。