圆形不换向蓄热式天然气熔铝炉的数值模拟
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摘要
文章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。针对目前较为广泛应用的12吨以天然气为燃料的圆形熔铝炉,利用CFD软件,采用标准k-ε湍流模型、化学组分输运和反应模型中的涡耗散模型对熔铝炉炉内传热、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。
Article outlines the working principle of regenerative combustion technology, and fuel commutation regenerative combustion technology and fuel without reversing regenerative combustion technology are compared. Aiming at the more widely used 12 tons of round aluminium melting furnace with natural gas as fuel, the use of CFD software using the standard k-ε turbulence model, chemical reaction model of component transport and dissipation of vortex model for aluminum melting furnace heat transfer, flow and combustion simulation of three dimensional steady-state flow. Obtained through numerical simulation of furnace gas temperature and flow field distribution, for not reversing regenerative aluminium melting furnace design and research to provide a rationale. Finally, through energy saving effect of actual project verifying the accuracy of mathematical model and numerical simulation.
Article outlines the working principle of regenerative combustion technology, and fuel commutation regenerative combustion technology and fuel without reversing regenerative combustion technology are compared. Aiming at the more widely used 12 tons of round aluminium melting furnace with natural gas as fuel, the use of CFD software using the standard k-ε turbulence model, chemical reaction model of component transport and dissipation of vortex model for aluminum melting furnace heat transfer, flow and combustion simulation of three dimensional steady-state flow. Obtained through numerical simulation of furnace gas temperature and flow field distribution, for not reversing regenerative aluminium melting furnace design and research to provide a rationale. Finally, through energy saving effect of actual project verifying the accuracy of mathematical model and numerical simulation.
引文
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[6]岑可法,樊建人.燃烧流体力学[M].北京:水利电力出版社,1991:18-19.
[2]周怀春,盛锋,等.高温空气燃烧技术——2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):18-2.
[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,2009:16-20.
[5]罗启全.铝合金熔炼与铸造[M].广州:广东科技出版社,2002:78-103.
[6]岑可法,樊建人.燃烧流体力学[M].北京:水利电力出版社,1991:18-19.