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(ta)是燃(ran)燒煤(mei)的發電(dian)廠將煤(mei)磨成100微(wei)米以下(xia)的煤(mei)粉，用預熱空(kong)氣(qi)噴入爐膛(tang)經(jing)燃(ran)燒形(xing)成懸浮狀態，產生混(hun)雜有大量不燃(ran)物(wu)的高(gao)溫煙氣(qi)，經(jing)集(ji)(ji)塵(chen)裝置捕集(ji)(ji)就(jiu)得到了粉煤(mei)灰(hui)。粉煤(mei)灰(hui)的化(hua)(hua)學組成與粘土質(zhi)相(xiang)似，主要(yao)成分為(wei)二氧(yang)化(hua)(hua)硅、三(san)氧(yang)化(hua)(hua)二鋁、三(san)氧(yang)化(hua)(hua)二鐵(tie)、氧(yang)化(hua)(hua)鈣和未(wei)燃(ran)盡碳。

工(gong)作(zuo)原(yuan)理(li)

濕(shi)粉煤灰(hui)由供料(liao)裝置進(jin)(jin)(jin)(jin)入(ru)三層(ceng)(ceng)(ceng)(ceng)滾筒(tong)(tong)的(de)(de)(de)(de)內(nei)(nei)層(ceng)(ceng)(ceng)(ceng),實現(xian)順流(liu)烘干(gan)(gan), 粉煤灰(hui)在(zai)(zai)(zai)(zai)內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)的(de)(de)(de)(de)抄(chao)板下不(bu)斷(duan)抄(chao)起、散(san)落(luo)呈螺旋(xuan)行(xing)進(jin)(jin)(jin)(jin)式(shi)實現(xian)熱交換，物(wu)(wu)(wu)(wu)料(liao)移動至(zhi)內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)的(de)(de)(de)(de)另一(yi)端進(jin)(jin)(jin)(jin)入(ru)中(zhong)層(ceng)(ceng)(ceng)(ceng)，進(jin)(jin)(jin)(jin)行(xing)逆(ni)流(liu)烘干(gan)(gan)，物(wu)(wu)(wu)(wu)料(liao)在(zai)(zai)(zai)(zai)中(zhong)層(ceng)(ceng)(ceng)(ceng)不(bu)斷(duan)地被反復揚(yang)進(jin)(jin)(jin)(jin)，呈進(jin)(jin)(jin)(jin)兩步(bu)退(tui)一(yi)步(bu)的(de)(de)(de)(de)行(xing)進(jin)(jin)(jin)(jin)方式(shi)，物(wu)(wu)(wu)(wu)料(liao)在(zai)(zai)(zai)(zai)中(zhong)層(ceng)(ceng)(ceng)(ceng)既(ji)充(chong)分吸收(shou)內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)滾筒(tong)(tong)散(san)發的(de)(de)(de)(de)熱量，又(you)吸收(shou)中(zhong)層(ceng)(ceng)(ceng)(ceng)滾筒(tong)(tong)的(de)(de)(de)(de)熱量，同時又(you)延長了干(gan)(gan)燥(zao)(zao)時間，物(wu)(wu)(wu)(wu)料(liao)在(zai)(zai)(zai)(zai)此(ci)達(da)到干(gan)(gan)燥(zao)(zao)狀態。物(wu)(wu)(wu)(wu)料(liao)行(xing)至(zhi)中(zhong)層(ceng)(ceng)(ceng)(ceng)另一(yi)端而落(luo)入(ru)外層(ceng)(ceng)(ceng)(ceng)，物(wu)(wu)(wu)(wu)料(liao)在(zai)(zai)(zai)(zai)外層(ceng)(ceng)(ceng)(ceng)滾筒(tong)(tong)內(nei)(nei)呈矩(ju)形多回路(lu)方式(shi)行(xing)進(jin)(jin)(jin)(jin)，達(da)到干(gan)(gan)燥(zao)(zao)效(xiao)果的(de)(de)(de)(de)物(wu)(wu)(wu)(wu)料(liao)在(zai)(zai)(zai)(zai)熱風(feng)作用下快(kuai)速行(xing)進(jin)(jin)(jin)(jin)排出滾筒(tong)(tong)，沒有(you)達(da)到干(gan)(gan)燥(zao)(zao)效(xiao)果的(de)(de)(de)(de)濕(shi)物(wu)(wu)(wu)(wu)料(liao)因自重(zhong)而不(bu)能快(kuai)速行(xing)進(jin)(jin)(jin)(jin)，物(wu)(wu)(wu)(wu)料(liao)在(zai)(zai)(zai)(zai)此(ci)矩(ju)形抄(chao)板內(nei)(nei)進(jin)(jin)(jin)(jin)行(xing)充(chong)分干(gan)(gan)燥(zao)(zao)，由此(ci)達(da)到干(gan)(gan)燥(zao)(zao)效(xiao)果，完成(cheng)干(gan)(gan)燥(zao)(zao)過程(cheng)。

設備特點(dian)

該設(she)(she)備與其他干燥(zao)設(she)(she)備相(xiang)比，生(sheng)產能力大，可連續(xu)操作； 結構簡單，操作方便(bian)；故障少，維修費用(yong)低；適用(yong)范(fan)圍(wei)廣(guang)，流體阻力小，可以用(yong)它干燥(zao)顆料狀物料，對于那些附著(zhu)性大的(de)物料也很有(you)利；操作彈性大，生(sheng)產上允許(xu)產品(pin)的(de)流量(liang)有(you)較大波動(dong)范(fan)圍(wei)，不會影響產品(pin)的(de)質量(liang)；清掃容易。