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(ran)(ran)燒(shao)煤的(de)發電廠將煤磨成100微米以下的(de)煤粉，用(yong)預熱空氣噴入爐膛經燃(ran)(ran)燒(shao)形成懸(xuan)浮(fu)狀(zhuang)態(tai)，產生混雜有(you)大量不燃(ran)(ran)物的(de)高溫煙氣，經集塵裝置捕集就(jiu)得到了粉煤灰。粉煤灰的(de)化(hua)(hua)(hua)學組成與粘土質相似，主(zhu)要成分為(wei)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(tie)、氧(yang)化(hua)(hua)(hua)鈣和(he)未燃(ran)(ran)盡碳。

工作原理

濕粉(fen)煤灰由(you)供料(liao)裝置進(jin)(jin)入三層(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)的(de)(de)內(nei)層(ceng)(ceng)(ceng),實現順流(liu)烘(hong)干, 粉(fen)煤灰在(zai)內(nei)層(ceng)(ceng)(ceng)的(de)(de)抄板(ban)下(xia)不(bu)斷抄起、散(san)落(luo)(luo)呈螺旋行(xing)(xing)(xing)(xing)進(jin)(jin)式(shi)(shi)(shi)實現熱交換，物(wu)(wu)料(liao)移動(dong)至內(nei)層(ceng)(ceng)(ceng)的(de)(de)另一(yi)端進(jin)(jin)入中(zhong)層(ceng)(ceng)(ceng)，進(jin)(jin)行(xing)(xing)(xing)(xing)逆流(liu)烘(hong)干，物(wu)(wu)料(liao)在(zai)中(zhong)層(ceng)(ceng)(ceng)不(bu)斷地被反復揚(yang)進(jin)(jin)，呈進(jin)(jin)兩步(bu)退一(yi)步(bu)的(de)(de)行(xing)(xing)(xing)(xing)進(jin)(jin)方式(shi)(shi)(shi)，物(wu)(wu)料(liao)在(zai)中(zhong)層(ceng)(ceng)(ceng)既充(chong)分吸收內(nei)層(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)散(san)發的(de)(de)熱量，又吸收中(zhong)層(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)的(de)(de)熱量，同時又延長了干燥時間(jian)，物(wu)(wu)料(liao)在(zai)此達到干燥狀態。物(wu)(wu)料(liao)行(xing)(xing)(xing)(xing)至中(zhong)層(ceng)(ceng)(ceng)另一(yi)端而(er)(er)落(luo)(luo)入外(wai)層(ceng)(ceng)(ceng)，物(wu)(wu)料(liao)在(zai)外(wai)層(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)內(nei)呈矩形(xing)(xing)多(duo)回路方式(shi)(shi)(shi)行(xing)(xing)(xing)(xing)進(jin)(jin)，達到干燥效果的(de)(de)物(wu)(wu)料(liao)在(zai)熱風作用下(xia)快(kuai)速行(xing)(xing)(xing)(xing)進(jin)(jin)排出滾(gun)筒(tong)(tong)，沒有達到干燥效果的(de)(de)濕物(wu)(wu)料(liao)因自重而(er)(er)不(bu)能(neng)快(kuai)速行(xing)(xing)(xing)(xing)進(jin)(jin)，物(wu)(wu)料(liao)在(zai)此矩形(xing)(xing)抄板(ban)內(nei)進(jin)(jin)行(xing)(xing)(xing)(xing)充(chong)分干燥，由(you)此達到干燥效果，完成(cheng)干燥過程。

設備特點(dian)

該設備(bei)與其他干燥設備(bei)相比，生產能力大(da)，可連(lian)續操(cao)作； 結構簡(jian)單，操(cao)作方便；故障(zhang)少，維修費用(yong)低；適用(yong)范(fan)圍廣(guang)，流體阻力小，可以用(yong)它干燥顆料(liao)狀物(wu)料(liao)，對于那些附著性大(da)的物(wu)料(liao)也(ye)很有利；操(cao)作彈性大(da)，生產上允許產品(pin)的流量有較大(da)波(bo)動范(fan)圍，不會影響產品(pin)的質量；清(qing)掃容易。