共查询到10条相似文献,搜索用时 109 毫秒
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介绍转底炉炉衬采用新型节能保温材料-无石棉耐高温硅酸钙板,可减少炉衬散热损失14.1%,同时还减少炉衬厚度25MM,炉门设计新颖,动作快、密封性好、压紧力可调。 相似文献
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随着国家对大气环境保护的越发重视,钢铁行业超低排放的不断深入,转底炉项目污染物排放限值的要求也将进一步收紧。结合转底炉生产情况,分析其燃料特性和烟气污染物的生成机理,阐述了转底炉烟气处理的必要性、难点以及推动超低排放的合理化建议。基于对传统的烟气污染物控制技术进行综述,介绍了湿法脱硫、半干法脱硫、干法脱硫、选择性催化还原法和选择性非催化还原法等主流的烟气脱硫脱硝技术,从技术、投资和运行等多方面进行了对比探讨,为转底炉烟气脱硫脱硝新形势下超低排放技术路线的选择提供了一定的借鉴。转底炉烟气处置技术路线首选为“低氮燃烧器+SNCR+余热锅炉+SDS干法脱硫+布袋除尘器”,次选为“低氮燃烧器+余热锅炉+SDS干法脱硫+布袋除尘器+SCR”技术路线。 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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积极发展直接还原铁(DRI)生产技术,应对21世纪电炉废钢紧缺的挑战 总被引:4,自引:1,他引:4
简述了直接还原铁(DRI)生产技术的发展历史,我国DRI生产技术现状以及一些DRI新技术进展。分析了DRI技术得以迅速发展的原因,对主要的直接还原工艺进行了简介。指出了发展DRI生产技术的紧迫性和我国发展DRI的方向,展望了DRI生产技术的发展前景。 相似文献
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Wei-Hsin Chen Mu-Rong Lin A.B. Yu Shan-Wen Du Tzong-Shyng Leu 《International Journal of Hydrogen Energy》2012
Hydrogen and synthesis gas (syngas) can be produced from steam reforming (SR) of coke oven gas (COG). When the reforming gas is used for indirect reduction (IR) of iron oxides in blast furnaces (BFs), carbon dioxide emissions can be lessened. Motivated from utilizing hydrogen and mitigating greenhouse gas emissions in ironmaking, the reaction phenomena of SR of COG are investigated thermodynamically. Low-temperature and high-temperature IR of iron oxides using reforming gas as a feedstock is also analyzed. With appropriate operating conditions, the maximum H2 and syngas yields are 3.5 and 4.2 mol (mol fuel)−1, respectively. Two different reforming gases are employed to reduce iron oxides. When the reforming gas/hematite (R/H) molar ratio is no less than 1, Fe2O3 conversion is always higher than 98.5%, whether low-temperature or high-temperature IR is carried out. This reveals that COG possesses the potential as a reducing agent in BFs. The reactions of IR from the two reforming gases are almost identical, implying that the operation of SR from COG for producing hydrogen or syngas and reducing iron oxides in BFs is flexible. 相似文献