R0110合成气燃烧室方案设计和数值模拟  

R0110 Syngas Combustor Conceptual Design and Simulation

作　　者：金戈[1] 齐兵[1] 

机构地区：[1]中航工业沈阳发动机设计研究所,沈阳110015

出　　处：《燃气轮机技术》2013年第3期28-32,43,共6页Gas Turbine Technology

摘　　要：IGCC系统中煤气化后生成中、低热值合成气,其主要可燃成分是CO和H2,与天然气相比,合成气的热值低而火焰温度更高,火焰传播速度更快。为了实现R0110燃气轮机燃烧室由天然气改烧中、低热值合成气燃料,设计了新的双燃料多喷嘴燃烧器,将预混燃烧改为扩散燃烧,取消火焰筒头部预混装置,改为带内壁的环形燃烧区。合成气燃烧室方案的CFD数值模拟结果表明,燃烧区头部回流明显,能够满足稳定燃烧要求。注入稀释剂后,燃烧室流场、温度场基本一致,燃烧区最高温度显著降低,有利于降低NO x排放。In IGCC system coal gasified and generated Medium calorific value syngas which main combustible components is CO and H2. Compared with natural gas, The calorific value of syngas is lower, however, the flame temperature of syngas is higher and flame propagation speed is faster. In order to achieve R0110 gas turbine combustor burn from natural gas to medium calorific value syngas, the new dual fuel multi nozzle burner was designed. The combustion mode was changed from premixed combustion to diffusion combus- tion. Premixing assembly of combustion chamber is removed, and changed to the annular combustion zone with inner wall. The CFD simulation results of syngas combustor conception indicated that the recirculation zone is very obviously in the combustor dome, and meet the requirements of stable combustion. After injecting diluents, the combustion chamber flow field and temperature field is con- sistent, but the highest temperature of combustion zone was reduced significantly, this helps reduce NOx emissions.

关 键 词：燃烧室 合成气 数值模拟 方案设计 

分 类 号：TK474.9[动力工程及工程热物理—动力机械及工程]