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硅酸铝纤维板被广泛用于工业炉隔热保温,节能效果明显。 我厂的工业炉燃烧室面积比较大,工艺设计定额每炉装铸钢件17t,煤气耗量为600m~3/h。采用硅酸铝纤维板作为工业炉内衬,炉顶用10mm厚的,易于贴牢;炉侧用20mm厚的。自己配制的粘贴剂50%的耐 相似文献
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概述与桶式钢包炉精为不锈钢密切联系的5项相关技术,拉瓦尔氧枪喷嘴的设计和脱碳保铬工艺技术;氧浓差电池民和废气温度变化规律的掌握,风中硅碳含量比与脱碳速度回归式的应用;水冷拉瓦尔氧枪和精炼钢包内壁包口防溅技术的开发。 相似文献
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徐州彭城发电厂#1炉在省内首次采用加氧冲管新工艺,#2炉在总结#1炉加氧冲管经验的基础上,进一步提高加氧浓度,取得了明显的效果。本文阐述了蒸汽加氧冲管的基本原理,同时介绍了彭城发电一期工程两台锅炉采用蒸汽加氧冲管的实际应用情况,实践表明,无论在冲管能耗及工期方面,还是冲管效果方面,采用适当的加氧浓度对蒸汽加氧冲管都具有显著的影响。 相似文献
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由中国科学院大连化学物理研究所膜技术国家工程研究中心研究成功的膜法富氧局部增氧助燃技术于 2 0 0 3年 7月 2 1日首次在国内成功用于泰山玻璃纤维股份有限公司的单元窑 :平均节油大于 1 0 % ,而且产品产量和质量等明显提高 ,助燃风、大碹温度和排烟温度均大幅下降等。膜法富氧局部增氧助燃技术适用于各种燃料和大多数炉窑如马蹄焰窑、横火焰窑、油炉、链条炉、抛煤机炉、煤粉炉、焚烧炉、加热炉和热媒炉等 ,由于能提高产品产量和质量、显著节能、减少污染和延长炉龄等优点 ,曾通过北京市人民政府和中国科学院的联合鉴定 ,并被评为国家级… 相似文献
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在纵观工业炉窑节能技术实施现状的基础上,提出空燃气双预热和富氧空气助燃两项进一步节能的燃烧技术。以高炉气、发生炉气和焦炉气为例,通过计算绘图展示了这两项技术实施后的节能效果,并指出了目前存在的具体问题。 相似文献
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热水锅炉内除氧缓蚀剂的研制与应用 总被引:1,自引:0,他引:1
从停炉保护和锅炉运行两方面分析了氧腐蚀的特征和原因,概括地部结了锅炉湿保剂,除氧剂的特点及应用,论述了阻垢除氧缓蚀剂在阻垢,除氧,除垢,缓蚀等方面的优异性能及其显著的经济效益。 相似文献
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对火焰炉采用乳化重油后的节能进行的分析,并联系到平炉燃用乳化重油的情况,作者认为火焰炉采用乳化油后是否节能,需依据炉子的具体情况而定。使用乳化油后应适当降低空气消耗系数及调整有关参数。 相似文献
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介绍了武钢炼钢平炉改转炉技术改造系统工程的基本情况,并对该项目实施后的综合节能效益进行了详细分析,在此基础上提出了进一步改进的具体措施。 相似文献
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C.M. Chang W.T. Cheng C.E. Huang S.W. Du 《International Communications in Heat and Mass Transfer》2009
The erosion caused by mass transfer in hearth is the most important factor for determining blast furnace campaign life. To support a helpful insight information of mass transfer for the hearth of the No. 2 blast furnace at CSC (China Steel Corporation), a numerical model including the mass transfer of carbon in thermal convective flow from a blast furnace hearth has been developed during the steady tapping process (based on a uninterrupted tapping process assumption). The three dimensional Navier–Stokes equation combined with the transport equations of energy and species with conjugate heat transfer and physical dissolution source is solved by the finite control volume scheme subjected to the segregated iterate under propriety boundary conditions. The results showed the concentration distribution of carbon expressed in terms of mass flux for analyzing the erosion of carbon brick in the blast furnace hearth with the different conditions including the status of dead-man, production of liquid iron, carbon concentration at the inlet, and porosity distribution in coke zone during tapping process at steady state. The result is useful to mitigate the erosion caused by mass transfer, and prolong the life span of the blast furnace. 相似文献
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介绍氮基气氛辊底炉热处理生产线的设计特点,该生产线消化吸收国外先进技术,性能优越,主要用于轴承零件的淬、回火。 相似文献
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This communication presents a review of reduction of heat flux through the roof of a building by open evaporation of water over the roof. A comparative study of (i) roof pond, (ii) spray cooling/gunny bags and (iii) moving water over the roof system is presented. Analysis of the moving water system has been given from which results for the roof pond and water spray can be obtained as special cases. Numerical results, discussion and conclusions have also been presented. 相似文献
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This paper discusses the thermal modelling of the technique for cooling buildings by means of open evaporation of water over the roof. A comparative study of cooling by means of (i) a roof pond, (ii) a water spray and (iii) moving water over the roof is presented. The influences of parameters such as wind speed, relative humidity and water flow velocity on the performance of the system are numerically examined. 相似文献
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主要论述了高温辊底式热处理生产线在炉体、燃烧、温控、传动、冷却等方面所使用的新技术。采用这些技术后,提高了炉子的自动化程度、炉子热效率和热处理水平。 相似文献
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This study performs the numerical simulation of hydrogen dispersion in a partially open space with a single roof vent. The effects of various roof vent positions, leak positions, leak flow rates and exhaust flow rates on the forced ventilation of leaking hydrogen, are shown and discussed. Based on the results, a proper roof vent position and the disadvantage of ventilation with constant exhaust flow rates are established. To overcome the disadvantage, a new control strategy to change exhaust flow rates with the roof vent fixed at the proper position is proposed. First a plot is constructed to show acceptable exhaust flow rates to various inflow rates and leak positions. Assuming real-time sensing of hydrogen concentration and height-direction velocity, volume flow rates of leaking hydrogen are then estimated. Based on the estimated leak flow rates and hydrogen sensor information near the roof, control is conducted considering the plot of acceptable exhaust flow rates to various inflow rates and leak positions. The proposed method is validated against various leak positions, leak flow rates and leak modes. This paper proposes an innovative approach to sensing-based risk mitigation control of hydrogen dispersion and accumulation in a partially open space by forced ventilation. 相似文献