摘要
借助FLUENTCFD软件平台,对1台200MW切向燃烧锅炉炉内燃烧流动进行了三维数值模拟。计算了炉内流场、温度场、组分场,还对炉内污染物NO排放规律进行了计算。计算结果显示,整个炉膛空间存在旋转流场,直到炉膛出口还有旋转残余。炉内的温度场的最高温度出现在燃烧器区域,各组分浓度场与温度场都有很大关系,NO的生成主要是在燃烧过程中,沿炉膛高度浓度逐渐减小,与炉膛中氧气组分的浓度也有一定的对应关系。计算结果为工业运行、设计和改造提供了参考。
FLUENT CFD software is used to make combustion and flow simulation on a 200MW boiler. Flow, temperature and mixture field is drawn from the calculation results. The contamination NO discharge law is also studied. Circumrotating flow is in the whole boiler space and as far as boiler exit, the circumrotating flow still remains. The highest temperature area is near burners. The mixture relates with temperature distribution.NO is created during combustions. From boiler bottom, to top, NO concentration deduces. The calculation results can provide consults on industry operation, design and rebuilding.Figs 11, table 1 and refs6.
出处
《动力工程》
CSCD
北大核心
2003年第6期2773-2776,共4页
Power Engineering
基金
国家863专项经费项目(2002AA527053)
国家重点研究专项经费项目(G1999022204-3)
全国优秀博士论文专项基金项目(G1999022204-3)。
关键词
煤粉锅炉
切向燃烧
数值模拟
NO
pulverized-coal fired boiler
tangentially combustion
numerical simulation
NO
