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基夫赛特熔炼过程中供氧方式的CFD模拟与优化 预览

CFD modelling and optimization of oxygen supply mode in KIVCET smelting process
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摘要 通过数值模拟研究供氧方式对基夫赛特熔炼过程的影响。以中央喷射分配喷嘴的中央氧与侧氧质量流量比表示供氧方式,模拟质量流量比在 0.09~0.39 范围内的基夫赛特炉熔炼过程。结果表明,4 个中央喷射分配喷嘴下方区域为高效反应区。增大中央氧流量可以改善颗粒与气体的混合状况,从而促进化学反应的进行,同时会缩短高效反应区;但是,由于喷嘴下颗粒柱的分散会使烟尘率增加。对于熔炼能力为 50000 kg/h 的基夫赛特炉,其最优的供氧方式为质量流量比取 0.31,在该工况下,炉料的化学反应可以充分进行,同时也保证较低的烟尘率。 The influence of oxygen supply mode on the KIVCET (a Russian acronym for flash?cyclone?oxygen?electric?smelting) process was investigated using numerical simulation. The mass rate ratio (MRR) of central oxygen to lateral oxygen of the central jet distributor (CJD) burner was defined to express the oxygen supply mode, and the KIVCET process with an MRR ranging from 0.09 to 0.39 was simulated. The results show that there are four efficient reaction regions that correspond to four CJD burners. A higher central oxygen flow improves the mixing between particles and oxygen, thus enhancing reactions and shortening the reaction regions. However, a higher dust rate is induced due to the spread of the particle columns. The optimal MRR for a KIVCET furnace with a smelting capacity of 50000 kg/h is suggested to be 0.31. In this case, the chemical reactions associated with the feed are completed with an acceptable dust rate.
作者 李家栋 周萍 廖舟 柴立元 Chenn Q.ZHOU 张岭 Jia-dong LI;Ping ZHOU;Zhou LIAO;Li-yuan CHAI;Chenn Q. ZHOU;Ling ZHANG(School of Energy Science and Engineering,Central South University,Changsha 410083,China;Zhuzhou Smelter Group Company Limited,Zhuzhou 412004,China;School of Metallurgy and Environment,Central South University,Changsha 410083,China;Center for Innovation through Visualization and Simulation,Purdue University Northwest,2200 169th Street,Hammond,IN 46323,USA;Changsha Nonferrous Metallurgy Design and Research Institute Company Limited,Changsha 410019,China)
出处 《中国有色金属学报:英文版》 SCIE EI CAS CSCD 2019年第7期1560-1568,共9页 Transactions of Nonferrous Metals Society of China
基金 Project (61621062) supported by the Foundation for Innovative Research Groups of the National Natural Science Foundation of China.
关键词 基夫赛特炉 中央喷射分散喷嘴 计算流体力学 中央氧 侧氧 最优化 KIVCET furnace central jet distributor (CJD) burner computational fluid dynamics (CFD) central oxygen lateral oxygen optimization
作者简介 Corresponding author:Ping ZHOU;Tel:+86-13975804856;E-mail:zhoup@csu.edu.cn.
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