贫燃催化燃烧燃气轮机的燃烧与系统性能分析  

Investigation of Combustion and Systematic Performance of a Gas Turbine System With Lean Burn Catalytic Combustion Chamber

作　　者：尹娟[1] 翁一武[1] 

机构地区：[1]上海交通大学机械与动力工程学院,上海市闵行区200240

出　　处：《中国电机工程学报》2010年第11期1-7,共7页Proceedings of the CSEE

基　　金：国家重点基础研究发展计划项目(973项目)(2010CB227301);国家自然科学基金项目(90610019)~~

摘　　要：介绍了贫燃催化燃烧燃气轮机系统的流程及特点。应用改进一维塞流数学模型,进行催化燃烧数值模拟,并用试验进行验证,分析催化燃烧的影响因素。在Aspen Plus软件中建立了系统模型,选择3个独立设计变量,即压气机压比、回热器回热度以及透平入口温度,进行系统性能分析。得到的主要结论有:在回热度及透平入口温度一定的情况下,随着压比的增加,燃烧室入口温度降低。为保证甲烷转化率,增加了甲烷浓度,从而降低了系统热效率。合理优选透平入口温度,对系统优化设计至关重要。透平入口温度及压比一定的工况下,回热度越低,系统热效率越低;在回热度一定且小于临界值时,压比越大,对催化燃烧的影响越大。The flowsheet and characteristics of a lean-bum catalytic combustion gas turbine system were investigated. The simulation results were determined by utilizing improved plug flow reactor（PFR） model and validated by experimental data. The effects of operating parameters on catalytic combustion were analyzed. The system models were built in Aspen Plus and three independent design variables, i.e. compressor pressure ratio, regenerator effectiveness and turbine inlet temperature（TiT） systematic performance. The were selected to analysis the main results show that： if effectiveness and TIT are constant, the combustor inlet temperature decreases with the increasing of pr.ssure ratio. In order to maintaining methane conversion, the methane concentration is increased and the thermal efficiency is reduced It is a necessary condition to choose a reasonable TIT. When T^T and pressure ratio are constant, the lower the effectiveness is, the lower the thermal efficiency is. When the effectiveness is constant and lower than threshold value, the higher pressure ratio is, the more significant effects on the performance of catalytic combustion are.

关 键 词：贫燃催化燃烧 燃气轮机 建模 特性 

分 类 号：TK472[动力工程及工程热物理—动力机械及工程]