| Two-stage numerical simulation for temperature profile in furnace of tangentially fired pulverized coal boiler |
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| 作者姓名： | 周乃君 徐琼辉 周萍 |
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| 作者单位： | SchoolofEnergyandPowerEngineering,CentralSouthUniversity,Changsha410083,China |
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| 摘 要： | Considering the fact that the temperature distribution in furnace of a tangential fired pulverized coal boiler is difficult to be measured and monitored, two-stage numerical simulation method was put forward. First, multifield coupling simulation in typical work conditions was carried out off-line with the software CFX-4.3, and then the expression of temperature profile varying with operating parameter was obtained. According to real-time operating parameters, the temperature at arbitrary point of the furnace can be calculated by using this expression. Thus the temperature profile can be shown on-line and monitoring for combustion state in the furnace is realized. The simulation model was checked by the parameters measured in an operating boiler, DO130-9. 8/540. The maximum of relative error is less than 12% and the absolute error is less than 120℃, which shows that the proposed two-stage simulation method is reliable and able to satisfy the requirement of industrial application.
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| 关 键 词： | 粉煤锅炉 燃烧监测 温度分布 数值模拟 |
| 收稿时间： | 10 March 2004 |
| 修稿时间： | 11 June 2004 |
Two-stage numerical simulation for temperature profile in furnace of tangentially fired pulverized coal boiler |
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| Zhou Nai-jun , Xu Qiong-hui and Zhou Ping.Two-stage numerical simulation for temperature profile in furnace of tangentially fired pulverized coal boiler[J].Journal of Central South University of Technology,2005,12(1):97-101. |
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| Authors: | Zhou Nai-jun Xu Qiong-hui and Zhou Ping |
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| Affiliation: | (1) School of Energy and Power Engineering, Central South University, 410083 Changsha, China |
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| Abstract: | Considering the fact that the temperature distribution in furnace of a tangential fired pulverized coal boiler is difficult to be measured and monitored, two-stage numerical simulation method was put forward. First, multi-field coupling simulation in typical work conditions was carried out off-line with the software CFX-4.3, and then the expression of temperature profile varying with operating parameter was obtained. According to real-time operating parameters, the temperature at arbitrary point of the furnace can be calculated by using this expression. Thus the temperature profile can be shown on-line and monitoring for combustion state in the furnace is realized. The simul-ation model was checked by the parameters measured in an operating boiler, DG130-9.8/540. The maximum of relative error is less than 12% and the absolute error is less than 120 ℃, which shows that the proposed two-stage simulation method is reliable and able to satisfy the requirement of industrial application. |
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| Keywords: | pulverized coal boiler combustion monitoring temperature distribution numerical simulation |
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