煤(mei)(mei)粉(fen)灰(hui)烘干機是煤(mei)(mei)粉(fen)經高(gao)溫(wen)燃燒后(hou)形成(cheng)的一種似火山灰(hui)質混合(he)材(cai)料。

它是(shi)燃燒煤(mei)的發電廠(chang)將煤(mei)磨成(cheng)(cheng)100微米(mi)以下的煤(mei)粉(fen)，用預熱空氣(qi)(qi)噴入爐膛(tang)經燃燒形成(cheng)(cheng)懸(xuan)浮狀態(tai)，產生混雜有大(da)量不燃物的高溫煙氣(qi)(qi)，經集塵裝置(zhi)捕集就得到(dao)了(le)粉(fen)煤(mei)灰。粉(fen)煤(mei)灰的化(hua)學組成(cheng)(cheng)與粘土質(zhi)相似，主(zhu)要成(cheng)(cheng)分為(wei)二(er)氧(yang)(yang)化(hua)硅、三氧(yang)(yang)化(hua)二(er)鋁、三氧(yang)(yang)化(hua)二(er)鐵、氧(yang)(yang)化(hua)鈣和未燃盡碳。

工作(zuo)原(yuan)理(li)

濕(shi)粉煤(mei)灰由供料(liao)(liao)裝置(zhi)進(jin)(jin)(jin)入(ru)三層(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)(gun)筒(tong)(tong)的(de)(de)(de)內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)(ceng),實(shi)現順(shun)流烘干(gan)(gan), 粉煤(mei)灰在(zai)內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)的(de)(de)(de)抄(chao)板下(xia)(xia)不斷抄(chao)起、散(san)落呈(cheng)(cheng)螺旋行(xing)進(jin)(jin)(jin)式實(shi)現熱(re)交換，物(wu)(wu)(wu)(wu)(wu)料(liao)(liao)移(yi)動至內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)的(de)(de)(de)另一(yi)端(duan)進(jin)(jin)(jin)入(ru)中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)，進(jin)(jin)(jin)行(xing)逆流烘干(gan)(gan)，物(wu)(wu)(wu)(wu)(wu)料(liao)(liao)在(zai)中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)不斷地被反復揚進(jin)(jin)(jin)，呈(cheng)(cheng)進(jin)(jin)(jin)兩步(bu)退一(yi)步(bu)的(de)(de)(de)行(xing)進(jin)(jin)(jin)方式，物(wu)(wu)(wu)(wu)(wu)料(liao)(liao)在(zai)中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)既充(chong)分吸收內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)(gun)筒(tong)(tong)散(san)發的(de)(de)(de)熱(re)量，又吸收中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)(gun)筒(tong)(tong)的(de)(de)(de)熱(re)量，同時又延長了(le)干(gan)(gan)燥(zao)時間，物(wu)(wu)(wu)(wu)(wu)料(liao)(liao)在(zai)此達(da)到干(gan)(gan)燥(zao)狀(zhuang)態。物(wu)(wu)(wu)(wu)(wu)料(liao)(liao)行(xing)至中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)另一(yi)端(duan)而(er)落入(ru)外(wai)層(ceng)(ceng)(ceng)(ceng)(ceng)，物(wu)(wu)(wu)(wu)(wu)料(liao)(liao)在(zai)外(wai)層(ceng)(ceng)(ceng)(ceng)(ceng)滾(gun)(gun)筒(tong)(tong)內(nei)(nei)呈(cheng)(cheng)矩形多(duo)回路方式行(xing)進(jin)(jin)(jin)，達(da)到干(gan)(gan)燥(zao)效(xiao)果的(de)(de)(de)物(wu)(wu)(wu)(wu)(wu)料(liao)(liao)在(zai)熱(re)風作用(yong)下(xia)(xia)快速行(xing)進(jin)(jin)(jin)排出滾(gun)(gun)筒(tong)(tong)，沒有達(da)到干(gan)(gan)燥(zao)效(xiao)果的(de)(de)(de)濕(shi)物(wu)(wu)(wu)(wu)(wu)料(liao)(liao)因自(zi)重而(er)不能快速行(xing)進(jin)(jin)(jin)，物(wu)(wu)(wu)(wu)(wu)料(liao)(liao)在(zai)此矩形抄(chao)板內(nei)(nei)進(jin)(jin)(jin)行(xing)充(chong)分干(gan)(gan)燥(zao)，由此達(da)到干(gan)(gan)燥(zao)效(xiao)果，完(wan)成干(gan)(gan)燥(zao)過(guo)程。

設(she)備特點(dian)

該設備(bei)與其(qi)他干燥(zao)設備(bei)相比，生產能力大，可連續操作(zuo)； 結(jie)構簡單，操作(zuo)方便；故(gu)障(zhang)少，維修(xiu)費用低；適用范圍廣，流體阻力小，可以用它干燥(zao)顆料(liao)狀物(wu)料(liao)，對(dui)于那(nei)些附著性(xing)大的物(wu)料(liao)也很(hen)有利(li)；操作(zuo)彈性(xing)大，生產上允許產品的流量有較大波動范圍，不會影響產品的質量；清掃容(rong)易。