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)(ran)(ran)燒煤(mei)的發(fa)電廠將煤(mei)磨成(cheng)100微(wei)米以下(xia)的煤(mei)粉，用預熱空氣噴入爐膛經燃(ran)(ran)(ran)燒形成(cheng)懸(xuan)浮狀態，產生混(hun)雜有大量不(bu)燃(ran)(ran)(ran)物的高溫煙氣，經集(ji)塵裝置捕集(ji)就得到了粉煤(mei)灰。粉煤(mei)灰的化學組成(cheng)與(yu)粘土質相似，主要成(cheng)分為二氧(yang)(yang)化硅、三氧(yang)(yang)化二鋁、三氧(yang)(yang)化二鐵(tie)、氧(yang)(yang)化鈣和未燃(ran)(ran)(ran)盡碳(tan)。

工(gong)作(zuo)原理(li)

濕(shi)粉煤灰由供料(liao)(liao)(liao)裝置進(jin)(jin)(jin)入三層(ceng)(ceng)(ceng)(ceng)(ceng)滾筒(tong)(tong)的(de)(de)(de)內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)(ceng),實現(xian)(xian)順流(liu)烘干(gan), 粉煤灰在內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)的(de)(de)(de)抄板(ban)下(xia)不(bu)斷(duan)抄起(qi)、散落呈螺旋行(xing)(xing)(xing)進(jin)(jin)(jin)式(shi)實現(xian)(xian)熱(re)交(jiao)換(huan)，物(wu)(wu)料(liao)(liao)(liao)移動(dong)至內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)的(de)(de)(de)另一端進(jin)(jin)(jin)入中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)，進(jin)(jin)(jin)行(xing)(xing)(xing)逆流(liu)烘干(gan)，物(wu)(wu)料(liao)(liao)(liao)在中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)不(bu)斷(duan)地被反復揚進(jin)(jin)(jin)，呈進(jin)(jin)(jin)兩步(bu)退一步(bu)的(de)(de)(de)行(xing)(xing)(xing)進(jin)(jin)(jin)方(fang)式(shi)，物(wu)(wu)料(liao)(liao)(liao)在中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)既充分(fen)(fen)吸收(shou)內(nei)(nei)層(ceng)(ceng)(ceng)(ceng)(ceng)滾筒(tong)(tong)散發的(de)(de)(de)熱(re)量，又吸收(shou)中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)滾筒(tong)(tong)的(de)(de)(de)熱(re)量，同時又延長了(le)干(gan)燥時間，物(wu)(wu)料(liao)(liao)(liao)在此(ci)達到(dao)干(gan)燥狀態。物(wu)(wu)料(liao)(liao)(liao)行(xing)(xing)(xing)至中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)另一端而落入外層(ceng)(ceng)(ceng)(ceng)(ceng)，物(wu)(wu)料(liao)(liao)(liao)在外層(ceng)(ceng)(ceng)(ceng)(ceng)滾筒(tong)(tong)內(nei)(nei)呈矩形多回(hui)路方(fang)式(shi)行(xing)(xing)(xing)進(jin)(jin)(jin)，達到(dao)干(gan)燥效(xiao)果的(de)(de)(de)物(wu)(wu)料(liao)(liao)(liao)在熱(re)風作用下(xia)快速行(xing)(xing)(xing)進(jin)(jin)(jin)排(pai)出滾筒(tong)(tong)，沒(mei)有達到(dao)干(gan)燥效(xiao)果的(de)(de)(de)濕(shi)物(wu)(wu)料(liao)(liao)(liao)因自重而不(bu)能(neng)快速行(xing)(xing)(xing)進(jin)(jin)(jin)，物(wu)(wu)料(liao)(liao)(liao)在此(ci)矩形抄板(ban)內(nei)(nei)進(jin)(jin)(jin)行(xing)(xing)(xing)充分(fen)(fen)干(gan)燥，由此(ci)達到(dao)干(gan)燥效(xiao)果，完成干(gan)燥過程。

設(she)備特(te)點

該(gai)設備與其(qi)他干燥設備相比(bi)，生(sheng)產(chan)能(neng)力大(da)(da)(da)，可(ke)連續(xu)操(cao)作； 結構(gou)簡(jian)單(dan)，操(cao)作方(fang)便(bian)；故障少，維(wei)修費用低；適用范圍(wei)廣(guang)，流體阻力小(xiao)，可(ke)以(yi)用它干燥顆(ke)料狀物(wu)料，對于那些附(fu)著性大(da)(da)(da)的物(wu)料也很有(you)利；操(cao)作彈(dan)性大(da)(da)(da)，生(sheng)產(chan)上允許產(chan)品的流量(liang)有(you)較大(da)(da)(da)波動(dong)范圍(wei)，不會影響(xiang)產(chan)品的質量(liang)；清掃容易(yi)。