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年產(chǎn)80萬(wàn)㎡拋光磚天然氣輥道窯設(shè)計(jì)畢業(yè)論文(存儲(chǔ)版)

  

【正文】 40℃ : 材料及厚度:輕質(zhì)高鋁磚230mmλ高鋁磚=+103t=+103=(w/m/m179。216。擋板最大入窯深度距離輥?zhàn)又行纳?50mm。、擋板由于輥道窯屬中空窯,工作通道空間大,氣流阻力小,難以調(diào)節(jié)窯內(nèi)壓力制度及溫度制度。 測(cè)溫孔為嚴(yán)密監(jiān)視及控制窯內(nèi)溫度制度,及時(shí)調(diào)整燒嘴開(kāi)度,一般在窯道頂及火道側(cè)墻留設(shè)若干處測(cè)溫孔以安裝熱電偶。設(shè)置風(fēng)管的好處是:一、對(duì)生產(chǎn)環(huán)境較有利,噪音??;二、在窯爐上所占位置較小,有利于設(shè)置測(cè)溫孔和事故處理孔。各自一臺(tái)運(yùn)行,一臺(tái)備用。 燒嘴布置位置7—8節(jié)9—12節(jié)13—18節(jié)燒嘴布置每節(jié)2個(gè)燒嘴每節(jié)4個(gè)燒嘴每節(jié)8個(gè)燒嘴燒嘴總數(shù)4個(gè)16個(gè)48個(gè)總共68個(gè) 冷卻系統(tǒng)制品在冷卻帶有晶體成長(zhǎng),轉(zhuǎn)化的過(guò)程,并且冷卻出窯是整個(gè)燒成過(guò)程最后的一個(gè)環(huán)節(jié)。 燃燒系統(tǒng)在輥?zhàn)由舷赂髟O(shè)一層燒嘴,同一層燒嘴兩側(cè)交錯(cuò)布置,同一側(cè)燒嘴上下交錯(cuò)布置。min1長(zhǎng)度比例/%節(jié)數(shù)預(yù)熱帶20~9502712燒成帶950~12106急冷帶1210~950652緩冷段950~4009快冷段400~803累計(jì)7210032 ③ 溫度曲線圖(2)氣氛制度:全窯氧化氣氛(3)壓力制度:預(yù)熱帶8~4 Pa ,燒成帶 8 Pa 窯長(zhǎng)及各帶長(zhǎng) 窯長(zhǎng)同一列磚磚距取30 mm ,則裝窯密度=每米排數(shù)每排片數(shù)每片磚面積=3= ()所以, 窯長(zhǎng)=。 內(nèi)高內(nèi)高為窯道內(nèi)整個(gè)空間的高度,等于輥上高(輥道中心線至窯頂?shù)木嚯x)與輥下高(輥道中心線至窯底的距離)之和。我設(shè)計(jì)的輥道窯是連續(xù)式窯。沒(méi)有合理的燒成控制,產(chǎn)品質(zhì)量和產(chǎn)量都會(huì)很低。另一種是連續(xù)式窯爐,比如輥道窯。全窯采用氣密性良好的布置,盡可能隔絕窯內(nèi)外環(huán)境,倡導(dǎo)潔凈生產(chǎn),優(yōu)化工作環(huán)境。燒成溫度是1210℃。排煙口和抽熱風(fēng)口分別設(shè)置在輥上下,且在這些區(qū)段的前后設(shè)有擋墻和擋板,有效加強(qiáng)內(nèi)部氣體滯留時(shí)間,提高冷熱交換效果。 slow cooling section to set a longer conducive to control of product defects。所以,輥道窯是當(dāng)前陶瓷工業(yè)中優(yōu)質(zhì)、高產(chǎn)、低消耗的先進(jìn)窯型,在我國(guó)已得到越來(lái)越廣泛的應(yīng)用。設(shè)計(jì)之前我已經(jīng)將設(shè)計(jì)的基本情況確定,并進(jìn)行了詳盡的計(jì)算。我設(shè)計(jì)的輥道窯,窯體趨向輕型化,燒成質(zhì)量好,產(chǎn)量高,年產(chǎn)80萬(wàn)㎡。 取內(nèi)高如下:標(biāo)準(zhǔn)磚:23011475mm。在每段排煙處設(shè)4個(gè)排煙口直通窯體外,在排煙口出口處設(shè)置一條支煙管,每條支煙管設(shè)置排煙閘,以調(diào)節(jié)煙氣支流量。最佳燃燒使得污染物排放水平極低。輥道窯急冷段應(yīng)用最廣的是直接風(fēng)冷是在輥上下設(shè)置橫窯斷面的冷風(fēng)噴管。大多數(shù)輥道窯在該處設(shè)有3~6處抽風(fēng)口,使從急冷段與窯尾段過(guò)來(lái)的熱風(fēng)流經(jīng)制品,讓制品慢速均勻得冷卻。為了便于處理事故,兩側(cè)墻事故處理一般采用交錯(cuò)布置形式,為了能清除窯內(nèi)任何位置上的事故而不造成“死角”,兩相鄰事故處理孔間距不應(yīng)大于事故處理孔對(duì)角線延長(zhǎng)線與對(duì)側(cè)內(nèi)壁交點(diǎn)連線。窯頂測(cè)溫孔設(shè)計(jì)安裝在距離窯前1340mm處,側(cè)墻安裝位置距離窯底200mm,距窯前1340mm。再一個(gè)就是防止高溫?zé)煔獾妮椛鋵?duì)急冷管的損害。耐火材料必須具有一定的強(qiáng)度和耐火性能以便保證燒到高溫窯體不會(huì)出現(xiàn)故障。 厚度應(yīng)保證強(qiáng)度和耐火度。℃)設(shè)=1500℃,查表得=(Kj/m179?!?單位熱流q==(w/㎡)窯底散熱面積A底=A頂=㎡∴Q底= qA==(kJ/h)第6~12節(jié), 窯內(nèi)平均溫度700℃,窯外平均溫度80℃ :材料及厚度:粘土質(zhì)隔熱磚230mm外壁最高溫度為=80℃,環(huán)境溫度取=20℃。℃)單位熱流q==(w/㎡)一側(cè)墻散熱面積A墻=7=㎡∴二側(cè)墻散熱量Q墻=2=(kJ/h):材料及厚度:超輕質(zhì)耐火粘土磚75mm +103t+103t 外壁最高溫度為=80℃,環(huán)境溫度取=20℃。根據(jù)對(duì)流輻射換熱系數(shù)計(jì)算公式有:已知,即為要求的,但未知,須采用試差法計(jì)算:先假定,則= ,重設(shè),則=相對(duì)誤差很小,認(rèn)為第二次假設(shè)合理。8 冷卻帶熱平衡計(jì)算:小時(shí);溫度0℃;計(jì)算范圍:冷卻帶熱平衡框圖以及相關(guān)說(shuō)明 Q2 :產(chǎn)品帶入顯熱 Q7 : 產(chǎn)品帶出顯熱 Q6 :冷風(fēng)帶入顯熱 Q8 :熱風(fēng)抽出帶走顯熱 Q9 :窯體散熱 Q10:其他熱損失此項(xiàng)熱量為預(yù)熱帶和燒成帶產(chǎn)品帶走的顯熱 = (kJ/h)鼓入冷風(fēng)的溫度為: =20oC 查表知此時(shí)冷風(fēng)的比熱為: =(m179。根據(jù)對(duì)流輻射換熱系數(shù)計(jì)算公式有:已知, ,先假定,則= ,重設(shè)=相對(duì)誤差很小,認(rèn)為第二次假設(shè)合理?!?單位熱流q==727(w/㎡)窯底散熱面積A底=A頂=㎡∴Q底= qA=727=(kJ/h)第二部分第21~29節(jié), 窯內(nèi)平均溫度700℃,窯外平均溫度80℃ : 材料及厚度:輕質(zhì)粘土磚230mm, 國(guó)產(chǎn)混合纖維LG46 130mm, λ纖維=外壁最高溫度為=80℃,環(huán)境溫度取=20℃。℃)單位熱流q==(w/㎡)一側(cè)墻散熱面積A墻=9=㎡∴二側(cè)墻散熱量Q墻=2=(kJ/h):材料及厚度:+103t+103t 外壁最高溫度為=80℃,環(huán)境溫度取=20℃。9燒嘴選型每小時(shí)燃料消耗量為 ()本設(shè)計(jì)一共設(shè)置了68個(gè)燒嘴。這種傳動(dòng)方式運(yùn)行平穩(wěn)可靠,調(diào)整簡(jiǎn)單,維修量小。則窯內(nèi)輥?zhàn)涌倲?shù)為N =3230 = 960根。則h=(12+)2=.位壓阻力h煙氣從窯爐至風(fēng)機(jī),高度升高H=,此時(shí)幾何壓頭位煙氣流動(dòng)的動(dòng)力即負(fù)位壓阻力,取煙氣溫度位200℃,∴h=H(ρρ)g =() =局部阻力局部阻力ζ由表查得:煙氣從窯爐進(jìn)入支管:ζ1=1支煙管進(jìn)入分煙管:ζ2=并45圓弧轉(zhuǎn)彎: 3=2=1并90176。=(),長(zhǎng)8節(jié)。長(zhǎng)8節(jié)。所需輕質(zhì)高鋁磚磚數(shù)量=5391塊4) 粘土質(zhì)隔熱磚在全窯窯墻6節(jié)~12節(jié)和21~29用粘土質(zhì)隔熱磚,:所需超輕質(zhì)耐火粘土磚體積為:m179??偣菜琛?179。一、 設(shè)計(jì)不是憑空構(gòu)想。在我整個(gè)設(shè)計(jì)的過(guò)程里得到了各位老師的大力幫助,我在這里特別感謝我的指導(dǎo)老師陳功備老師以及全體熱工系老師給予我的耐心指導(dǎo),感謝同學(xué)們?cè)谠O(shè)計(jì)過(guò)程中給予我的幫助!參考文獻(xiàn)[1] 胡國(guó)林 《建陶工業(yè)輥道窯》. [2] 胡國(guó)林 陳功備 《窯爐砌筑與安裝》.[3] 蔣鑒華 張振剛 《熱工測(cè)量及過(guò)程自動(dòng)控制》.[4] 孫晉淘 《陶瓷工業(yè)熱工設(shè)備》. [5] 蔡增基 龍?zhí)煊濉读黧w力學(xué)泵與風(fēng)機(jī)》.[6] 陳 帆 《現(xiàn)代陶瓷工業(yè)技術(shù)設(shè)備》. [7] 續(xù)魁昌 《風(fēng)機(jī)手冊(cè)》. [8] 王秉銓 《工業(yè)爐設(shè)計(jì)手冊(cè)》. [9] 姜正侯 《燃?xì)夤こ碳夹g(shù)手冊(cè)》.[10] 劉麟瑞 林彬蔭 《工業(yè)窯爐用耐火材料手冊(cè)》 [11] 楊世銘 陶文銓 《傳熱學(xué)》第三版 . 英文文獻(xiàn)Energy saving furnace and waste heat utilizationFirst, macrosurface Dealing with the fire kiln, furnace output by the daily life of most products occupy, which is also an important part of modern society. Dealing with fire, it involves bustion, involving insulation, related to emissions, so that people attached furnace industry a better life, an attached greenhouse gases and harmful gas emissions, its important can be seen. Based on this understanding, the Copenhagen meeting, if the furnace industry changes, can bring immediate results. 1, the quality of the pursuit of the furnace of the pursuit of product quality, can bring twice the impact. Just think, give up this purpose, what will bring serious consequences. Take the building ceramics industry, the turn of the century, the development of Foshan ceramics impressive, as Foshan, even people relish. But cool to think, how much consumption of Foshan ceramics fossil raw materials, chemical raw materials and fuel? Large number of ceramic products has still retained in our home and decoration of public facilities? In other words, is not there for 10 years or 20 years of happiness and joy in exchange for future generations or even centuries of tragic years? starting from 2009 the national expansion of construction ceramics industry, race, location far below the level of Foshan. The development of society should be going up, and such a situation, energy conservation and emission reduction in crying today, means that we will face even greater tragedy! Industrialization is a perpetual motion machine, not long before the earth disappear ceramic raw materials and fuel can depleted. Besides, we have begun to face nonceramic material can be dug, recoverable state. The sake of our posterity, we have to consider seriously some of the problems. The needs of lowquality lowend success of the furnace equipment and other manufacturing equipment market? Or the other hand, because of backward production facilities, it has cultivated a lowend market? This is a subject not tell Road, unknown, but the result is yes, the building ceramics products, the products of low quality means durability, poor persistence, in the near future (maybe this time is about 10 years), social development, and now the rural market and lowine groups, a significant portion of will be renovated, which in turn is a tremendous waste. China is a big country, but it is also resource poor countries, must be considered in the durable goods production conditions, development of appropriate national policy,
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