| PARTICULATE CONCENTRATION ENRICHMENT OF PRIMARY AIR IN PULVERIZED COAL BOILERS |
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| 引用本文： | HaiZhang XiuqingXu. PARTICULATE CONCENTRATION ENRICHMENT OF PRIMARY AIR IN PULVERIZED COAL BOILERS[J]. 中国颗粒学报, 2004, 2(5): 230-233 |
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| 作者姓名： | HaiZhang XiuqingXu |
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| 作者单位： | KeyLaboratoryofThermalScienceandPowerEngineering,DepartmentofThermalEngineering,TsinghuaUniversityBeijing100084,RR.China |
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| 摘 要： | ![]()
Particulate concentration enrichment (PCE) of primary air favors flame ignition and stabilization, and the reduction of NOx emission in pulverized coal combustion. The methods used for PCE are summarized in five categories:Cyclone PCE, Elbow PCE, Blunt-body PCE, Hydrodynamic PCE and Swirling PCE. Practice of each PCE method is illustrated with typical burners and the associated pros and cons are discussed. It is found that the same principle prevails in all PCE methods, that is, due to inertial difference, solid particles preferentially decelerate and separate from the gas stream when the main flow deviates in flow orientation. From analysis of various P-C burners, PCE design is deemed to yet comprise “rule of thumb” practice. Some discussions regarding PCE application are given.
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| 关 键 词： | 粉煤锅炉 固液分离工艺 二相流 PCE |
PARTICULATE CONCENTRATION ENRICHMENT OF PRIMARY AIR IN PULVERIZED COAL BOILERS |
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| Hai Zhang and Xiuqing Xu Key Laboratory of Thermal Science and Power Engineering. PARTICULATE CONCENTRATION ENRICHMENT OF PRIMARY AIR IN PULVERIZED COAL BOILERS[J]. China Particuology, 2004, 2(5): 230-233 |
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| Authors: | Hai Zhang and Xiuqing Xu Key Laboratory of Thermal Science and Power Engineering |
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| Affiliation: | Hai Zhang* and Xiuqing Xu Key Laboratory of Thermal Science and Power Engineering,Department of Thermal Engineering,Tsinghua University,Beijing 100084,P. R. China *Author to whom correspondence should be addressed. E-mail: haizhang@mail.tsinghua.edu.cn |
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| Abstract: | ![]()
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| Keywords: | particulate concentration enrichment (PCE) boilers separation two-phase flow |
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