摘要
在碳减排背景下,燃气轮机燃烧室需要在出口温度不断提高的同时控制NO_(x)排放、提高功率调节范围和燃料适应性。为了应对以上挑战,燃气轮机厂商正在发展轴向分级燃烧技术。本文介绍了轴向分级燃烧原理,分析了轴向分级参数、交叉射流火焰形态、喷嘴结构和燃料种类对污染物排放和燃烧不稳定性的影响。现有研究表明,降低一级燃烧室当量比、增强二级燃烧室的掺混均匀性能够降低污染物排放;轴向分级燃烧室的热声振荡特性复杂,合理选取分级参数能够抑制振荡。轴向分级燃烧室的减排效益和工况调节能力已经在商业运行中得到验证。基于目前研究现状,展望了轴向分级燃烧技术的关键问题和未来研究方向。
The prospective demand for carbon reduction requires gas turbine combustion chambers to control NO_(x) emissions,improve power regulation range and fuel adaptability while outlet temperatures are continuously increasing.To address the above challenges,gas turbine manufacturers are developing axial staged combustion technology.This paper firstly introduced the principle of axial staged combustion and analyzed the effects of axial staged parameters,jet-in-crossflow flame morphology,nozzle geometry and fuel type on pollutant emissions and combustion instability.Existing studies show that reducing the equivalence ratio of the primary combustion chamber and enhancing the mixing uniformity of the secondary stage primary combustion chamber can reduce pollutant emissions.The thermoacoustic oscillation of axial staged combustion chambers is complex,and could be inhibited by a reasonable selection of stage parameters.The emission reduction benefits and part-load flexibility of axial staged combustion chambers have been verified in commercial operation.Based on the current research status,key issues and future research directions of axial staged combustion technology are proposed.
作者
梁恩广
张辰杰
余志健
朱民
LIANG Enguang;ZHANG Chenjie;YU Zhijian;ZHU Min(Key Laboratory for Thermal Science and Power Engineering of Ministry of Education,Department of Energy and Power Engineering,Tsinghua University,Beijing 100084,China)
出处
《动力工程学报》
CAS
CSCD
北大核心
2024年第9期1328-1339,共12页
Journal of Chinese Society of Power Engineering
关键词
燃气轮机
燃烧室
轴向分级燃烧
污染物
燃烧不稳定性
gas turbine
combustion chamber
axial staged combustion
pollutant
combustion instability
