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                当前位置:首页 > 技术知识 > 工业热风炉在提高空气与燃料混合融合◥性方面有哪些举措呢

                工业热风炉在提高空气与燃料混合融合性方面▲有哪些举措呢

                文章出处:   发布时间:2019-07-28 08:59:54   浏览:2

                工业热风炉在提高空气与燃料混合融合性方面有哪些举措呢?随着热风炉在工业制造方面广泛被使用的频次越来越高,现在大多数人的重心都会放在如何使之可以让空气和燃料充分的混合达到一定的融合点.根据之前的一些实地考察和经验汇总得知,钢铁工业制造用户通过热风炉技术研究和生产操作改进,开发出一系★列高风温技术,如热风炉余热回收、转炉煤气(LDG)烧炉、富氧烧炉、计算机模型烧炉等,使宝钢高炉ξ风温可以长期稳定在1 250℃左右,高达1280℃, 热风炉高风温技术达〓到国际先进水平。
                What measures do industrial hot stoves take to improve the mixing fusibility of air and fuel? With the increasing frequency of hot stoves being widely used in industrial manufacturing, most people now focus on how to make the full mixing of air and fuel reach a certain fusion point. According to some previous field tests. Through the research and improvement of hot-blast stove technology and production operation, a series of high blast temperature technologies have been developed by the users of iron and steel industry, such as hot-blast stove waste heat recovery, converter gas (LDG) burner, oxygen-enriched burner and computer model burner, so that the blast temperature of Baosteel's blast furnace can be stabilized at about 1 250 C for a long time, up to 1280 C. The high blast temperature technology of hot blast stove has reached the advanced international level. 
                提高热风温度是增加高炉喷煤、降ζ 低成本的主要手段 ,从理论燃烧温度、加热面积、工业节能设备的合理结构设计和操作4方面来讨论提高热风温度的途径 ,分析了国内各种燃烧器的优缺点及各种可供选择的热风炉预热方案。同时讨论了烟气和冷风分配技术及消除热「应力的方法 ,以便热风炉※能达到1200℃以上风温和10年以上寿命。
                Increasing hot blast temperature is the main means to increase coal injection and reduce cost. The ways to increase hot blast temperature are discussed from four aspects: theoretical combustion temperature, heating area, reasonable structure design and operation of industrial energy-saving equipment. The advantages and disadvantages of various domestic burners and various preheating schemes for hot blast stoves are analyzed. At the same time, the distribution technology of flue gas and cold air and the method of eliminating thermal stress are discussed, so that the hot blast stove can reach a temperature above 1200 C and a life of more than 10 years.


                提高高炉风温不仅直接影响生铁产品的产量和质量ζ,而且是高炉提高煤比(增加喷煤量)和降低燃料比(焦比)的重要措施之一。从热工角度初步分析了高炉设备的热工行为;在此基础上,根据热工炉窑3类变量之间的关系,系统分析了高炉热能设备结构参数和操作参数对其出口风温的影响;指出了如何从结构参数和操作参数上提高高炉热风炉风温。
                Increasing blast furnace temperature not only directly affects the output and quality of pig iron products, but also is one of the important measures to increase coal ratio (increase coal injection) and reduce fuel ratio (coke ratio) in blast furnace. The thermal behavior of blast furnace equipment is preliminarily analyzed from the point of view of thermotechnics. On this basis, according to the relationship among three kinds of variables of blast furnace, the influence of structural and operational parameters of blast furnace thermal energy equipment on its outlet air temperature is systematically analyzed, and how to improve blast furnace air temperature from structural and operational parameters is pointed out.


                为开发5500m3高炉BSK顶燃▆式热能设备技术,对顶燃式热风炉的燃烧机制和燃烧特性进行了研究。采用CFD数学仿真模拟研究ㄨ了BSK顶燃式热能设备环形陶瓷燃烧器的燃烧机制,解析了顶燃式热风炉燃烧室内气体的混合、流动以及燃烧过程,计算分析了顶燃式热风炉燃烧过程的速度场、温度场以及浓度场分布。通过对实体热能设备的冷态测试,验证了CFD数学仿真计算的结果。研究结果表明,BSK顶燃式热风炉采用旋流扩散燃烧技术使燃烧过程速度场、温度场和浓度场分布均匀对称,并可以有效控制火焰长度和火焰形状,使煤气在拱顶空间内充分燃烧。速度场、温度场和浓度■场的分布与煤气和助燃空气的初始分布有直接关系。通过燃烧器喷嘴结构优化设计可以显著提高空气ㄨ与煤气混合的均匀性,改善燃烧室内浓度、温度分布以及火焰形状。
                In order to develop BSK top-burning heat energy equipment technology for 5500m3 blast furnace, the combustion mechanism and combustion characteristics of top-burning hot blast stove were studied. The combustion mechanism of annular ceramic burner of BSK top-fired heat equipment was studied by CFD simulation. The gas mixing, flow and combustion process in the combustion chamber of top-fired hot blast stove were analyzed. The velocity field, temperature field and concentration field distribution of combustion process in top-fired hot blast stove were calculated and analyzed. The results of CFD mathematical simulation calculation are verified by cold test of solid thermal energy equipment. The results show that the distribution of velocity field, temperature field and concentration field in combustion process is uniform and symmetrical by using swirl diffusion combustion technology in BSK top-fired hot blast stove, and the flame length and shape can be effectively controlled, so that the gas can be fully burned in the vault space. The distribution of velocity field, temperature field and concentration field is directly related to the initial distribution of gas and combustion-supporting air. By optimizing the structure of burner nozzle, the uniformity of air-gas mixing can be significantly improved, and the concentration, temperature distribution and flame shape in combustion chamber can be improved.

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