無機非金屬材料外文翻譯---富氧燃燒在輥道窯方面的應用

1、<p><b>　　外文文獻報告</b></p><p><b>　　附：文獻調(diào)研報告</b></p><p>　　Oxygen-enriched combustion in kiln applications</p><p>　　In recent years， domestic ceramic industr

2、y developing fast， especially the kiln in architectural ceramics industry wide application. Ceramic industry is at present large industrial users increasingly nervous energy， status， and how to improve the kiln heat util

3、ization rate of burned appears very important. And rich oxygen technology application in kiln for solving this problem provides a kind of way。</p><p>　　First，oxygen-enriched combustion technology in foreign

4、application in industry。</p><p>　　As early as 1982， the United States， Japan， Britain， France and other countries to be engaged in membrane technology of oxygen enrichment development and use。 They from memb

5、rane materials， film technology， components and devices and other aspects of the product production， production amplification， process design， process optimization and combustion application research work， and analyzed d

6、etection method and the development of analytical instruments such as oxygen concentration， eventually deve</p><p>　　Second， oxygen-enriched combustion technology energy-saving and control pollution mechanis

7、m。</p><p>　　1. Raise the flame temperature: </p><p>　　Oxygen-enriched air to participate in relative amount of nitrogen after combustion， thus make oxygen decrease rapidly and combustible mix to

8、 achieve full combustion， make the flame temperature as oxygen-enriched air of the carbon ratio increased with the accelerated， and radiation， conduction， convection of the three forms of heat transfer rate。 </p>

9、<p>　　2. Accelerate burning rate </p><p>　　Fuel burn in oxygen-enriched air speed reason: is due to increased oxygen content， so that the flame temperature increase in oxygen， such as natural gas caused

10、 the combustion rate than in normal air speed can improve the burning 10 times。 </p><p>　　Burning rate rise， lead to fuel the chamber of a stove or furnace quickly complete combustion。 </p><p>　

11、　3. To reduce fuel burn temperature </p><p>　　Flash point temperature clearly influenced by the reaction rate and the influence of heat loss。 Oxygen-enriched air than ordinary air helps to reduce "burn&

12、quot; temperature characteristics， and increase the heat release flame quantity of unit volume。 For inferior fuel effect more prominent。 </p><p>　　4. Reduce the displacement after combustion </p><

13、p>　　Use oxygen levels for 29% of oxygen-enriched air to burning， and ordinary air burning comparison， when excess air coefficient is a = 1， 20% less volume， the exhaust smoke heat loss also decreased by 20%， thus impr

14、oving the thermal efficiency and energy saving。 </p><p>　　5. Increase heat utilization rate </p><p>　　When heating temperature of 1300 DHS， use common air when C combustion. Its thermal utilizat

15、ion at 42%， but by oxygenation 26% of oxygen-enriched air combustion， the utilization rate increased to 56%， with heating temperature increases， energy-saving better effect。 </p><p>　　6. Reduce air surplus c

16、oefficient </p><p>　　Oxygen-enriched combustion can effectively reduce air surplus coefficient， make exhaust heat loss， so as to improve drastically lower thermal efficiency and energy saving kiln。 </p>

17、;<p>　　Third， roller kiln local increasing oxygen technology basic characteristics .</p><p>　　Currently get oxygen into kiln have oxygen - fuel spray gun， air - oxygen - fuel spray gun， secondary air

18、zofran and gun under local gush oxygen etc four basic methods. The top three species overall increase gas measures， the latter for local add oxygen。 </p><p>　　In the combustion system designing a roller kiln

19、， must consider the following five factors。 </p><p>　　(1).Will fuel heat maximum transfer to the glass; </p><p>　　(2). Will the burning heat transfer to the minimum upper structure; roller </

20、p><p>　　(3). Avoid flame washed into refractory material surface; </p><p>　　(4). The fuel and the combustion air effective mix， in order to reduce the flue caused by air in the excess heat loss。 &l

21、t;/p><p>　　Fourth， conclusion </p><p>　　(1) oxygen-enriched combustion technology and total oxygen burning technology in industrial furnaces， will give the successful application of enterprise to b

22、ring huge economic benefits and social benefits， have broad application prospect。 </p><p>　　(2) oxygen-enriched combustion compared with traditional combustion way way， have energy-saving， increase flue gas

23、radiation ability and shorten the heating time， increase production， etc。 </p><p>　　(3) in the future application of metallurgical industry furnaces oxygen-enriched combustion technology， pay attention to th

24、e following problems: highly efficient and clean system optimal oxygen-enriched combustion furnace type; Widen fuel use scope， undertake furnace pressure and furnace gas component effective control; Meanwhile the key dev

25、elopment practical， reliable low NOx emissions of engineering technology。 One pure oxygen concentration dilution mixer and oxygen-rich burner is the key tech</p><p>　　(4) some Chinese are battling for the ci

26、ty and the city built international famous scenery tourist city is likely to take the lead in using the developed countries， the environmental protection standard of other parts of the environmental protection also is va

27、lued. Total oxygen burning technology will be in our country has promoted。 </p><p>　　富氧燃燒在輥道窯方面的應用</p><p>　　近幾年，國內(nèi)陶瓷行業(yè)輥道窯的發(fā)展較快，尤其在建筑陶瓷行業(yè)應用廣泛.陶瓷行業(yè)是工業(yè)耗能大戶，針對目前能源日趨緊張的狀況，如何提高窯爐燒成的熱利用率顯得非常重要.而富氧技術(shù)在輥

28、道窯上的應用為解決這一問題提供了一種途徑。</p><p>　　一、富氧助燃技術(shù)在國外工業(yè)中的應用</p><p>　　早在1982年，美國、日本、英國、法國等國家就從事膜法富氧技術(shù)的研發(fā)和運用. 他們從膜材料、成膜技術(shù)、組件和裝置等方面進行了產(chǎn)品試制、生產(chǎn)放大、流程設計、過程優(yōu)化和燃燒應用等研究工作，并進行了分析檢測手段和分析儀器的開發(fā)等，最終開發(fā)出氧濃度為28%--40 %富氧空氣，裝

29、置，產(chǎn)氣量從幾升/分至1000m 3/h不同規(guī)格的產(chǎn)品，并進行了工業(yè)應用試驗，在燃氣、燃油和燃煤的不同場合下試驗，證實了30 %濃度的富氧空氣，即可用于工業(yè)助燃，其中用23% 的富氧空氣助燃可節(jié)能10% -- 25% .到20世紀80年代末，日本相繼有近20家大小公司推出了膜法富氧裝置.在富氧助燃方面，日本大阪煤氣公司和松下電器公司合作，在鋼坯加熱試驗爐、陶瓷燒成爐、玻璃窯爐上進行了實際應用，并取得了良好的節(jié)能效果。</p>

30、<p>　　二、富氧助燃技術(shù)節(jié)能和治理污染的機理</p><p><b>　　1、提高火焰溫度：</b></p><p>　　富氧空氣參于燃燒后，氮氣量相對減少，從而使氧分子迅速地與可燃物混合達到充分燃燒，使火焰溫度隨著富氧空氣中的氧分子比例的增加而提高，并加快了輻射、傳導、對流三種形式的熱傳率。</p><p><b>

31、;　　2、加快燃燒速度</b></p><p>　　燃料在富氧空氣中燃燒速度加快的原因：是由于增加氧含量后，使火焰溫度提高所致，如天然氣在氧氣中的燃燒速度比在普通空氣中的燃燒速度能提高10倍。燃燒速度的提高，導致燃料在爐膛內(nèi)迅速完全燃燒。</p><p>　　3、降低燃料的燃點溫度</p><p>　　燃點溫度明顯受到反應速率和熱損耗的影響。富氧空氣比普

32、通空氣有助于降低“燃點”溫度的特點，并增加火焰單位體積的熱釋放量。對于劣質(zhì)燃料效果更為突出。</p><p>　　4、減少燃燒后的排氣量</p><p>　　使用含氧量為30%的富氧空氣參加燃燒，與普通空氣燃燒比較，當過?？諝庀禂?shù)a=1時，則排氣體積減少20%，其排煙熱損失也減少20%，從而提高熱效率而節(jié)能。</p><p><b>　　5、增加熱量利用率

33、</b></p><p>　　當加熱溫度為1300oC時，用普通空氣燃燒.其熱利用率為42%，而用含氧量26%的富氧空氣燃燒，則利用率增加到56%，隨著加熱溫度增加，節(jié)能效果更顯著。</p><p>　　6、降低空氣過剩系數(shù)</p><p>　　富氧燃燒能有效地降低空氣過剩系數(shù)，使排煙熱能損失大幅度降低，從而提高窯爐的熱效率而節(jié)能。</p>

34、<p>　　三、 輥道窯局部增氧技術(shù)的基本特點</p><p>　　目前把氧氣引入輥道窯有氧氣-燃料噴槍、空氣-氧氣-燃料噴槍、二次空氣預混合和噴槍下局部噴氧等四種基本方法.其中前三種屬整體增氣措施，后一種為局部增氧。</p><p>　　在設計一座輥道窯的燃燒系統(tǒng)時，必須考慮以下5個因素。</p><p>　　(1)、將燃料的熱能最大限度地傳遞到玻璃中

35、；</p><p>　　(2)、將燃燒的熱能最小地傳遞到輥道窯的上部結(jié)構(gòu)中；</p><p>　　(3)、盡量避免火焰沖刷到耐火材料的表面上；</p><p>　　(4)、燃料和助燃空氣有效的混合，以減少煙道中因空氣過剩而造成的熱損失。</p><p><b>　　四、結(jié)論</b></p><p>

36、;　　(1)富氧燃燒技術(shù)及全氧燃燒技術(shù)在工業(yè)爐窯中的成功應用，將給企業(yè)帶來巨大經(jīng)濟效益和社會效益，具有廣闊的推廣應用前景。</p><p>　　(2)富氧燃燒方式與傳統(tǒng)燃燒方式比較，具有節(jié)能、增加煙氣輻射能力以及縮短加熱時間、增加產(chǎn)量等優(yōu)點。</p><p>　　(3)今后工業(yè)爐窯應用富氧燃燒技術(shù)時，注意以下幾個問題：高效、潔凈富氧燃燒系統(tǒng)的最佳爐型；拓寬燃料使用范圍，進行爐壓與爐氣成分有