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转炉二次燃烧氧枪技术是一种可有效提高转炉废钢比的清洁热补偿技术.介绍了转炉二次燃烧氧枪的原理、分类及工业应用研究进展,并对二次燃烧氧枪技术进行了深入研究.研究结果表明,采用二次燃烧氧枪加补热剂的单转炉废钢比达到41.6%的条件下,可使转炉终点温度达到1598℃,脱磷率为92.9%;与双流道二次燃烧氧枪相比,单流道二次燃烧氧枪只需将普通氧枪喷头更换为二次燃烧氧枪喷头,无需对原有枪体进行改造,具有结构简单,投资少,见效快的优点,适合大生产推广应用. 相似文献
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1概述随着冶金技术的发展和节能技术的开发,出现了转炉氧枪二次燃烧技术,此项技术不需改变原有供氧系统,不需增加投资,具有一定节能效果,为许多厂家所采用。本文主要对二次燃烧氧枪的节能效果进行分析。2二次燃烧氧枪的节能原理二次燃烧氧枪是在原有多孔氧枪喷头侧... 相似文献
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论述了武钢平炉顶吹二次燃烧喷头结构的特点及射流特性,分析了二次燃烧氧枪工业性试验的结果,与单流氧枪相比,二次燃烧氧枪吹炼过程成渣快,脱磷脱硫效果改善,吹炼基本无溅,脱碳升温速度提高,平均每炉炉钢吹氧时间缩短20min。 相似文献
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二次燃烧技术在70 t超高功率电弧炉上的应用 总被引:3,自引:0,他引:3
介绍了淮钢采用二次燃烧氧枪向70t超高功率电弧炉的一定区域内吹入低纯氧气进行二次燃烧,理论计算了二次燃烧的供氧流量和节能效果,并与已获得的工业效果进行了比较,结果表明了在超高功率电弧炉上应用二次燃烧技术效果较好。 相似文献
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Consteel电弧炉预热装置的二次燃烧技术 总被引:3,自引:0,他引:3
电弧炉废气的能量损失约为80~200kWh/t[1],采用预热废钢回收废气中的显热和采用二次燃烧技术回收废气中的CO的潜热,已成为电弧炉工作者追求的目标之一。西宁特钢集团公司的Consteel电弧炉[2]将二次燃烧从炉内移到炉外的预热装置中进行,并在此装置中完成CO气体的二次燃烧和废气预热。该项技术称为预热装置的二次燃烧技术。1预热装置二次燃烧技术的原理Consteel电弧炉使用了高效水冷自动碳氧枪,由于向炉内喷吹大量的碳、氧,熔池中的碳氧发生如下反应:C 12(O2)=CO↑ Q炉内产生大量的CO气体,废气中部分CO气体在炉内燃烧,但… 相似文献
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富氧顶吹炼铅炉炉龄探讨 总被引:1,自引:0,他引:1
介绍了富氧顶吹炼铅炉的工艺特点及其存在炉龄相对较短的问题,分析了影响炉龄的主要因素,试验研究了耐火砖的浸蚀和膨胀机理。结合6年生产实践,完成了相应的技改措施,使富氧顶吹炼铅炉的炉龄得到了大幅提高,创造了较好的经济效益。 相似文献
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对舞钢90t偏心底出钢UHP电炉从加料、造渣、废钢预热、吹氧助熔等进行了全面的节能降耗分析,提出解决电弧炉内熔池搅拌的动力学条件,提高传热传质效率成为舞钢降本增效、提高市场竞争力,适应钢铁形式的重要举措。 相似文献
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水钢1350m^3高炉大修后,经2年强化冶炼,炉缸西铁口下方侧壁温度上升至623℃,通过控制冶炼强度、钛矿护炉、休风堵风口、降低生铁锰、改变出铁方式,炉缸灌浆等措施,侧壁温度得到有效控制,并降低至500℃以下。侧壁温度稳定后,采取坚持钛矿护炉,逐步加氧强化冶炼,实现技术指标改善,侧壁温度稳定在安全水平,最大限度实现安全生产、增产降耗的目标。 相似文献
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《钢铁冶炼》2013,40(8):600-609
AbstractA heat transfer model was developed for scrap melting in an oxyfuel fired continuous process rotary melting furnace (CPRMF), which was envisioned as a replacement for the electric arc furnace in minimill steelmaking. The results are presented in a two part series. This first paper describes the bench scale CPRMF, the experimental procedure, and the operational results which will be used to validate the model. Two groups of copper melting trials were performed to explore aspects of furnace operation such as oxygen enrichment and slag thickness. The experimental results indicated that furnace thermal efficiency was significantly improved by moving from 37 to 80% oxygen in the combustion air and, extrapolating the results, would be ~30% for oxy fuel firing. With the constant oxygen level of 53%, the introduction of a slag layer significantly lowered the efficiency from 22 to 18% for 1·3 cm slag and 12% for 2·5 cm slag. 相似文献
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Oxy-fuel firing is more energy efficient and environmental friendly than conventional air-fuel firing and its application for reheating furnaces has begun since 90s. In this study, a computational methodology is presented to predict the steady heat transfer to the billets and temperature distribution in a continuous Pusher type reheating furnace which combustion air is enhanced by oxygen. The furnace is modeled as 2D radiating medium and Weighted Sum of Gray Gases model is used for absorption coefficient. The billets are moved in constant speed through zones of furnace. Radiative heat flux calculated from the radiative heat exchange within the furnace is modeled using the FVM considering the effects of furnace walls and billets. Energy consumption per ton of steel, production rate and thermal efficiency of furnace, and trend of NOx emission in various levels of oxygen enrichment is investigated by comparison with baseline furnace (21% O2 in air). 相似文献
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Energy aspects of a lead blast furnace 总被引:1,自引:0,他引:1
Janice E. Cowperthwaite Peter J. Dugdale Christian J. F. Landry David R.Morris Frank R. Steward Timothy C. W. Wilson 《Metallurgical and Materials Transactions B》1980,11(2):291-299
The energy effects accompanying the processing of the feed material to a lead blast furnace are considered in terms of a reversible
model. Relative to this model the efficiencies of operating furnaces are found to be in the range 18 to 35 pct. The effects
of the effluent gas CO2/CO ratio and temperature and oxygen enrichment of the blast air in the thermodynamic efficiency are quantified. Improvements
in efficiency achieved in industrial furnaces as a result of oxygen enrichment of the blast air are substantially greater
than those predicted. Mass and enthalpy balances on an industrial lead blast furnace are presented from which it is estimated
that approximately 9 pct of the carbon charged to the furnace is lost due to the solution loss reaction in the upper regions
of the furnace.
David R.Morris, currently on sabbatical leave, University of Cambridge, Cambridge, United Kingdom. 相似文献
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济钢对副产煤气加热炉高效燃烧控制系统进行改造 ,煤气混合系统通过控制焦、高、转炉煤气的比例和压力 ,保证了混合煤气的热值和压力稳定 ;加热炉DCS系统通过控制加热炉废气中残氧量 ,调节空燃比 ,使燃烧达到最佳状态 ,提高了炉内钢坯的加热质量 ,实现了节能降耗和环境保护的目的 相似文献
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高炉的进风装置长期工作在高温、高压、喷煤、富氧的恶劣环境下,跑风、发红、表面温度高一直是炼铁亟待解决的问题。研制的新型节能进风装置,采用新的设计和工艺,使表面温度降低,热风温降变小。 相似文献
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邯钢高炉热风炉有外燃式、霍戈文内燃改造式、顶燃式3种,这些热风炉均能为高炉提供较高的风温。在生产实践中,经过不断改进,采取了加强“双预热”、助燃风富氧、优化热风管道系统等多项高风温措施,保证了热风炉的高温、长寿和高效。 相似文献