Numerical investigations on the effects of High Temperature Air Combustion in a coal-powered boiler

M. Abdul Majid, N. H. Shuaib, H. Hasini, M. H. Boosroh
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引用次数: 2

Abstract

In this paper, High-Temperature Air Combustion (HiTAC) method utilizing coal as fuel is studied numerically using Computational Fluid Dynamics (CFD). A case study was performed using the CFD code FLUENT 6.2 to investigate the effects of utilizing high temperature air combustion on a real 700MW coal-powered boiler operating on a tangential firing mechanism. The results obtained were consistent with the ones reported in the literature. For high temperature air, a bigger flame structure and higher average temperature inside the boiler was found. The firing performance is found to be improved mainly due to formation of stable flame which further leads to the reduction in ignition delay.
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燃煤锅炉高温空气燃烧影响的数值研究
本文利用计算流体力学(CFD)对煤为燃料的高温空气燃烧(HiTAC)方法进行了数值研究。利用FLUENT 6.2 CFD软件,对实际700MW切向燃烧机制燃煤锅炉采用高温空气燃烧的效果进行了研究。所得结果与文献报道一致。对于高温空气,火焰结构更大,锅炉内平均温度更高。燃烧性能的提高主要是由于形成了稳定的火焰,从而进一步减少了点火延迟。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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