[1] Leng Wei*, Xu Zhigao,. Three-Dimensional Dynamic Modeling of a Tangentially FiredUtility Boiler Furnace [J]. Journal of Southeast University (English Edition), 2002, 18 (4): 315-318. [doi:10.3969/j.issn.1003-7985.2002.04.006]
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Three-Dimensional Dynamic Modeling of a Tangentially FiredUtility Boiler Furnace(
)
切圆燃烧电站锅炉炉膛的三维动态模拟
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 18
- Issue:
- 2002 4
- Page:
- 315-318
- Research Field:
- Energy and Power Engineering
- Publishing date:
- 2002-12-30
Info
- Title:
- Three-Dimensional Dynamic Modeling of a Tangentially FiredUtility Boiler Furnace
- 切圆燃烧电站锅炉炉膛的三维动态模拟
- Author(s):
- Leng Wei*; Xu Zhigao
- Department of Power Engineering, Southeast University, Nanjing 210096, China
- Keywords:
- dynamic model; numerical simulation; boiler; furnace
- PACS:
- TK224.1
- DOI:
- 10.3969/j.issn.1003-7985.2002.04.006
- Abstract:
- The tangentially fired utility boiler furnace is divided into several sections. The dynamic mathematical models for each section are presented. In the combustion zone, three-dimensional model is used, while for the upper sections, lumped parameter model is used instead. With the combination of different models, we can get detailed distributions of gas velocity, temperature, chemical species, heat flux, etc. in the furnace, but with less CPU time. The radiation through the interfaces of each section is considered. The furnace inlet boundary condition, which is exclusive for dynamic simulation, is also discussed. The dynamic response to the burner tilting up is simulated and discussed.
- 切圆燃烧电站锅炉炉膛被分成了多个区段, 对每个区段建立了各自的动态数学模型.在燃烧区段, 采用了三维动态模型, 而在炉膛的上部采用了集总参数动态模型.通过采用这种不同类型的模型组合方式, 既可以得到动态模拟过程中烟气的速度、温度、组分、热流量等在炉内的分布情况, 又可以节省计算时间.模型中考虑了各区段之间的辐射换热.对炉膛入口边界条件在动态计算时要注意的问题作了分析.对燃烧器摆角向上扰动的动态响应过程作了模拟计算, 并对结果进行了讨论.
References:
[1] Fan J R, Qian L G, Ma Y L, et al. Computational modeling of pulverized coal combustion processes in tangentially fired furnaces [J]. Chemical Engineering Journal, 2001, 81:261-269.
[2] Xu M, Azevedo J L T, Carvalho M G. Modelling of the combustion process and NOxx emission in a utility boiler[J]. Fuel, 2000, 79:1611-1619.
[3] Wei T Z. The development of the emulation model of a new power plant boiler furnace[J]. Proceedings of the Chinese Society of Electrical Engineering, 2000, 20(3):50-52.(in Chinese)
[4] Patankar S V. Numerical heat transfer and fluid flow[M]. New York: Hemisphere Publishing Corporation, 1980.
[5] Fu W B, Zhang Y L, Wang Q A. Combustion[M]. Beijing: Higher Education Press, 1989.(in Chinese).
[6] Khalil E E. Modelling of furnaces and combustors[M]. UK: Abacus Press, 1982.
[7] Shi Q, Rui X M. A test study on the temperature regulation performance of the tilting burner of a 300 MW utility boiler[J]. Boiler Technology, 1988(5):1-4.(in Chinese)
Memo
- Memo:
- * Born in 1960, male, associate professor.