50t对冲式不换向蓄热式天然气熔铝炉的数值模拟
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摘要
简述了蓄热式燃烧技术的工作原理,并对燃料换向蓄热式燃烧技术和燃料不换向蓄热式燃烧技术进行了比较。针对目前大型的50 t以天然气为燃料的圆形熔铝炉,利用CFD软件,对采用对冲式不换向熔铝炉炉内传热、流动以及燃烧进行了三维稳态流动的模拟研究。通过数值模拟得到了炉内气体温度场、流场的分布情况,为对冲式不换向蓄热式熔铝炉的设计与研究提供了理论基础。最后,通过实际工程项目的节能效果验证了数学模型及数值模拟的正确性。
The working principle of regenerative com bustion technology is briefly described, and the fuel reversing regenerative combustion technology and not the reversing regenerative combustion technology are compared. In view of the present large 50 t circular aluminium melting furnace with natural gas as fuel,using CFD software, and adopting hedge type non-reversing aluminium melting furnace to study the threedimensional steady flow simulation of the heat transfer, flow and combustion in the furnace. The furnace gas temperature field and the distribution of flow field are obtained by numerical simulation, it provides a theoretical basis for hedge type reversing regenerative aluminium melting furnace design and research.Finally, a practical mathematical model and the energy saving effect of the project are verified the correctness of the numerical simulation.
The working principle of regenerative com bustion technology is briefly described, and the fuel reversing regenerative combustion technology and not the reversing regenerative combustion technology are compared. In view of the present large 50 t circular aluminium melting furnace with natural gas as fuel,using CFD software, and adopting hedge type non-reversing aluminium melting furnace to study the threedimensional steady flow simulation of the heat transfer, flow and combustion in the furnace. The furnace gas temperature field and the distribution of flow field are obtained by numerical simulation, it provides a theoretical basis for hedge type reversing regenerative aluminium melting furnace design and research.Finally, a practical mathematical model and the energy saving effect of the project are verified the correctness of the numerical simulation.
引文
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[2]周怀春,盛锋,姚宏,等.高温空气燃烧技术——21世纪关键技术之一[J].工业炉,1998(1):19-27.
[3]曹丰平,刘江.蓄热式燃烧技术实际应用中几个问题的探讨[J].工业炉,2002,24(4):20-22.
[4]唐剑,王德满,刘静安,等.铝合金熔炼与铸造技术[M].北京:冶金工业出版社,2009.
[5]罗启全.铝合金熔炼与铸造[M].广州:广东科技出版社,2002.
[6]岑可法,樊建人.燃烧流体力学[M].北京:水利电力出版社,1991.