煤(mei)粉灰(hui)烘(hong)干機(ji)是煤(mei)粉經高溫燃燒(shao)后形成的一種(zhong)似火山灰(hui)質(zhi)混合材料。

它是燃(ran)(ran)燒煤的發電(dian)廠將煤磨(mo)成100微米(mi)以下(xia)的煤粉，用(yong)預熱空(kong)氣噴入(ru)爐膛經(jing)燃(ran)(ran)燒形成懸浮狀(zhuang)態，產生(sheng)混雜有大量不燃(ran)(ran)物的高溫煙(yan)氣，經(jing)集(ji)塵裝置(zhi)捕集(ji)就(jiu)得到了粉煤灰(hui)。粉煤灰(hui)的化(hua)(hua)(hua)學組成與粘土質相似，主要成分為二氧(yang)化(hua)(hua)(hua)硅、三氧(yang)化(hua)(hua)(hua)二鋁、三氧(yang)化(hua)(hua)(hua)二鐵、氧(yang)化(hua)(hua)(hua)鈣(gai)和未(wei)燃(ran)(ran)盡碳。

工作原(yuan)理(li)

濕粉煤灰由(you)供料(liao)裝置進(jin)(jin)入三層(ceng)(ceng)(ceng)滾(gun)(gun)筒(tong)(tong)的內(nei)(nei)(nei)層(ceng)(ceng)(ceng),實(shi)(shi)現(xian)順流烘(hong)干(gan)(gan)(gan), 粉煤灰在(zai)(zai)(zai)內(nei)(nei)(nei)層(ceng)(ceng)(ceng)的抄(chao)板下不斷(duan)抄(chao)起(qi)、散落呈(cheng)(cheng)螺旋行(xing)(xing)(xing)進(jin)(jin)式實(shi)(shi)現(xian)熱(re)交換，物(wu)(wu)(wu)料(liao)移動至內(nei)(nei)(nei)層(ceng)(ceng)(ceng)的另一(yi)端(duan)進(jin)(jin)入中(zhong)層(ceng)(ceng)(ceng)，進(jin)(jin)行(xing)(xing)(xing)逆流烘(hong)干(gan)(gan)(gan)，物(wu)(wu)(wu)料(liao)在(zai)(zai)(zai)中(zhong)層(ceng)(ceng)(ceng)不斷(duan)地被反復(fu)揚進(jin)(jin)，呈(cheng)(cheng)進(jin)(jin)兩(liang)步退一(yi)步的行(xing)(xing)(xing)進(jin)(jin)方式，物(wu)(wu)(wu)料(liao)在(zai)(zai)(zai)中(zhong)層(ceng)(ceng)(ceng)既充分吸收(shou)內(nei)(nei)(nei)層(ceng)(ceng)(ceng)滾(gun)(gun)筒(tong)(tong)散發的熱(re)量(liang)，又(you)吸收(shou)中(zhong)層(ceng)(ceng)(ceng)滾(gun)(gun)筒(tong)(tong)的熱(re)量(liang)，同時又(you)延長了干(gan)(gan)(gan)燥(zao)時間(jian)，物(wu)(wu)(wu)料(liao)在(zai)(zai)(zai)此(ci)(ci)達(da)(da)到(dao)干(gan)(gan)(gan)燥(zao)狀態。物(wu)(wu)(wu)料(liao)行(xing)(xing)(xing)至中(zhong)層(ceng)(ceng)(ceng)另一(yi)端(duan)而(er)落入外(wai)層(ceng)(ceng)(ceng)，物(wu)(wu)(wu)料(liao)在(zai)(zai)(zai)外(wai)層(ceng)(ceng)(ceng)滾(gun)(gun)筒(tong)(tong)內(nei)(nei)(nei)呈(cheng)(cheng)矩(ju)形多回(hui)路方式行(xing)(xing)(xing)進(jin)(jin)，達(da)(da)到(dao)干(gan)(gan)(gan)燥(zao)效果的物(wu)(wu)(wu)料(liao)在(zai)(zai)(zai)熱(re)風(feng)作(zuo)用下快速行(xing)(xing)(xing)進(jin)(jin)排出滾(gun)(gun)筒(tong)(tong)，沒有達(da)(da)到(dao)干(gan)(gan)(gan)燥(zao)效果的濕物(wu)(wu)(wu)料(liao)因自重(zhong)而(er)不能快速行(xing)(xing)(xing)進(jin)(jin)，物(wu)(wu)(wu)料(liao)在(zai)(zai)(zai)此(ci)(ci)矩(ju)形抄(chao)板內(nei)(nei)(nei)進(jin)(jin)行(xing)(xing)(xing)充分干(gan)(gan)(gan)燥(zao)，由(you)此(ci)(ci)達(da)(da)到(dao)干(gan)(gan)(gan)燥(zao)效果，完成干(gan)(gan)(gan)燥(zao)過程。

設備(bei)特點

該設備(bei)與(yu)其他干燥設備(bei)相比，生(sheng)(sheng)產(chan)能力大(da)(da)(da)，可連續操(cao)(cao)作； 結構簡單，操(cao)(cao)作方便；故障少，維修(xiu)費用(yong)低；適用(yong)范(fan)(fan)圍廣，流(liu)體阻力小，可以用(yong)它(ta)干燥顆料狀物料，對于那些附著性(xing)大(da)(da)(da)的物料也很有利；操(cao)(cao)作彈(dan)性(xing)大(da)(da)(da)，生(sheng)(sheng)產(chan)上允許產(chan)品的流(liu)量(liang)(liang)有較大(da)(da)(da)波動范(fan)(fan)圍，不會影響(xiang)產(chan)品的質量(liang)(liang)；清掃容易。