【作者】 王海琴；

【导师】 孙保民；

【作者基本信息】 华北电力（北京）大学 ， 热能工程， 2002， 硕士

【摘要】 本论文从煤的着火和燃烧特性出发，分析了煤的着火稳燃性能，研究了高浓度煤粉燃烧理论。较详细地分析了国内外各种新型煤粉燃烧器的稳燃机理和运行状况。介绍了水平浓淡可调燃烧技术，分析了风包粉煤粉燃烧方式对锅炉燃烧的影响。同时，重点分析了百叶窗浓缩器的结构原理，并在试验台上和现场对百叶窗煤粉浓缩器进行了大量的试验研究，结果表明：百叶窗式水平浓淡煤粉燃烧器具有结构简单、阻力损失小、分离调节方便等一系列优点。另外，在冷态试验和热态试验研究的基础上，对汇流河发电厂#3炉进行了水平浓淡可调燃烧器的改造研究。改造结果表明：该燃烧器现场改造工作量小、安全可靠，不但具有对煤种的适应性强、稳燃效果好等特点，而且可以降低NOx排放量，大大地提高了锅炉运行的安全性、可调性和经济性。更多还原

【Abstract】 ln this paper, the flame stability function is anaIyzed, and highconcentration puIverized coaI theory is researched, which is onthe base of the fire and combustion characteristics of the coaI.The flame-stabiIization mechanism and working condition of newtypes of burners is introduced, as weII as the technology ofadjustable horizontal rich/Iean combustion is studied. Theinfluence to the boiler burner of air-surrounding-fueI combustionstyle is aIso researched. Mean while, the Iouver concentratorstructure principle is analyzed, the Iouver puIverized coalconcentrator is studied on the bases of both laboratory andproduction. lt is discovered from the experiments that the louverhorizontaI rich/lean combustion pulverized coal burner hasadvantages of simple in structure, low resistance and adjustmentof PC concentration. On the base of the coId state and hot stateexperiment, a reform to the #3 boiIer of Huiliuhe Power Stationusing the rich/Iean burner is performed. As a resuIt, the quantity ofNO is reduced, the security and the economy of the boiler areimproved remarkably.更多还原