1. 华北电力大学 能源动力与机械工程学院,北京,102206
2. 华北电力大学 电站能量传递转化与系统教育部重点实验室,北京,102206
朱瀚(2001—),男,安徽宿州人,研究方向为燃气轮机掺氢燃烧及壁面冷却特性,E-mail:15212478199@163.com
网络首发:2026-03-10,
纸质出版:2026-03-10
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朱瀚,李莉,周乐平,张辉,张润生,杜小泽. 燃气轮机掺氢燃烧流动及排放特性数值模拟动力工程学报, 2026, 46(3): 1-9 https://doi.
org/10.19805/j.cnki.jcspe.2026.250593
朱瀚,李莉,周乐平,张辉,张润生,杜小泽. 燃气轮机掺氢燃烧流动及排放特性数值模拟动力工程学报, 2026, 46(3): 1-9 https://doi. DOI: 10.19805/j.cnki.jcspe.2026.250593.
org/10.19805/j.cnki.jcspe.2026.250593 DOI:
为响应国家"双碳"战略
燃气轮机掺氢燃烧技术成为重要发展方向。基于SST
k
-
ω
湍流模型和非预混燃烧模型
采用数值模拟方法研究了某单管燃烧室在燃料喷射速度40~120 m/s和掺氢比0~20%条件下
掺氢天然气的流动和排放特性。结果表明:纯天然气和掺氢比20%工况下
燃烧室出口温度均在100 m/s时达到峰值后下降;燃料喷射速度超过100 m/s时
掺氢工况表现出更高的出口温度和更均匀的出口温度分布
但会破坏回流区
降低燃烧效率;CO排放量线性增加
CO
2
排放量先增后减;综合分析得出最佳燃料喷射速度为80 m/s
此工况下掺氢20%与纯天然气燃烧相比可扩大回流区面积
延长燃料充分燃烧时间
同时CO
2
和CO排放量分别减少了14.8%和54.9%
但NO
x
排放量增加了64.1%
易引发燃烧不稳定现象。本研究为燃气轮机掺氢燃烧系统的优化设计提供了重要的理论支撑。
In response to China's "dual carbon" strategy
hydrogen-blended combustion technology for gas turbines has become an important development direction. Based on the SST
k-ω
turbulence model and a non-premixed combustion model
the flow and emission characteristics of hydrogen-blended natural gas in a can-type combustor were numerically investigated under fuel inlet velocities ranging from 40 to 120 m/s and hydrogen blending ratios from 0 to 20%. Results show that for both pure natural gas and the 20% hydrogen-blended cases
the combustor outlet temperature peaks at 100 m/s before declining. When the inlet velocity exceeds 100 m/s
the hydrogen-blended cases exhibit higher outlet temperatures and a more uniform temperature distribution. However
the high velocity
disrupts the recirculation zone and reduces combustion efficiency. CO emissions increase linearly while CO
2
emissions first rise and then decrease. A comprehensive analysis identifies the optimal fuel inlet velocity as 80 m/s. Under this operating condition
compared to pure natural gas combustion
blending 20% hydrogen expands the recirculation zone area and extends the residence time for complete fuel combustion. Consequently
CO
2
and CO emissions decrease by 14.8% and 54.9%
alongside a 64.1% increase in NO
x
emissions and an elevated risk of combustion instability. This research provides important theoretical support for optimizing hydrogen-blended combustion systems in gas turbines.
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