共查询到20条相似文献,搜索用时 93 毫秒
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分析了推焦车平煤杆烧损的原因,指出了避免其烧损的必要性,研究出了防止烧损的技术革新方案,并且在生产中得到了应用。 相似文献
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采用计算机在线氧化烧损数模来计算宝钢热轧加热炉钢坯氧化烧损,比原采用人工称量的办法既省力又精确,同时还优化了加热炉的燃烧控制,对减少氧化烧损和节约能源起到一定作用。 相似文献
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燃烧器是热风炉的重要燃烧设备。本钢热风炉用燃烧器由金属燃烧器到陶瓷燃烧器.由套简式陶瓷燃烧器到矩型陶瓷燃烧器的应用过程,风温水平上了一个台阶. 相似文献
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本文介绍了三明钢铁厂通过分析电机烧损原因,加强电机的综合管理,大力推广现代化管理,降低了电机烧损,并取得初步成效。 相似文献
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V. V. Koptsev 《Metallurgist》2004,48(11-12):548-552
The application package PHOENICS was used to model the aerodynamics of new turbulent gas burner GGT, designed by the author. The article presents the results of the modeling, which were used to refine the burner’s design and determine efficient conditions for its use in the lime kilns at the Magnitogorsk Metallurgical Combine. Introduction of the burner has produced substantial monetary savings and improved the quality of the metallurgical lime made in the kiln. 相似文献
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论述了锅炉原用直流式燃烧器出现的问题,水平浓淡燃烧器的原理技术特点,改造后取得的良好效果。 相似文献
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Experimental and mathematical investigation of the fluid flow inside and below a 1/4 scale air model of a flash smelting burner 总被引:1,自引:0,他引:1
I. D. Šutalo F. R. A. Jorgensen N. B. Gray 《Metallurgical and Materials Transactions B》1998,29(5):993-1006
Single-phase turbulent fluid flow inside and below a burner model was studied to better understand the fluid flow processes
occurring inside and below flash smelting burners. The effect of Reynolds number and temperature on the axial velocity profiles
in a 1/4 scale experimental air model of a jet flow burner and shaft were investigated. Laser Doppler anemometry (LDA) was
used to determine the mean and fluctuating axial velocity components within and below this burner. Also experimentally determined
were the pressure profiles along the length of the burner and shaft and the inlet air and wall temperature profiles. In the
experiments, the Reynolds number range was approximately 60,600 to 76,100, which was in the turbulent flow regime. A mathematical
model was used to simulate axisymmetric two-dimensional air flow through a jet flow burner and shaft for Reynolds numbers
of 60,000 to 304,000. The axial velocity predictions of the high axial velocity region and surrounding region in the shaft
were in reasonable agreement with the axial velocity experimental results. Recommendations are made for the improvement of
the design of flash smelting burners. 相似文献
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Several approaches were chosen to simulate the combustion of carbon particles recycled in the melter gasifier of the COREX plant via a dust burner. Reaction rates from different literature sources were analysed to develop a functional reaction set for the carbon combustion. These models were tested in a 180° sector of the burner domain and were compared among each other. The results were transferred into a full 3D model of the dome region in the melter gasifier. 相似文献
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为研究含水汽低浓度瓦斯气体在多孔介质燃烧器中的燃烧特性,采用计算流体力学方法对其进行数值分析,研究了瓦斯含不同水汽量燃烧时燃烧器中温度分布规律和污染物排放情况.随着瓦斯中水汽含量的增大,燃烧器轴向温度及燃烧热效率下降.由温度二维等值线图可以直观看到不同工况下燃烧器中各个地点的温度分布,为燃烧器设计提供指导.在确保一定热效率时,适当增加水汽含量,可降低燃烧器中NOx排放量,不但可以保护环境,而且有助于CO转化为CO2以控制有毒气体排放量. 相似文献