发电技术 ›› 2026, Vol. 47 ›› Issue (2): 274-284.DOI: 10.12096/j.2096-4528.pgt.260205

• 发电及环境保护 • 上一篇    

微型燃气轮机燃烧室掺氨燃烧性能分析

童志庭1,2, 樊岳1,2, 刘新霞1,2, 张超1,2   

  1. 1.天津市先进机电系统设计与智能控制重点实验室(天津理工大学),天津市 南开区300384
    2.机电工程国家级实验教学示范中心(天津理工大学),天津市 南开区 300384
  • 收稿日期:2025-04-17 修回日期:2025-05-19 出版日期:2026-04-30 发布日期:2026-04-21
  • 作者简介:童志庭(1977),男,博士,副教授,研究方向为叶轮机械设计与数值仿真、综合能源系统,tongzhiting1215@163.com
    樊岳(2000),男,硕士研究生,研究方向为微型燃气轮机燃烧室数值模拟,fanyue001218@163.com
    刘新霞(1999),女,硕士研究生,研究方向为叶轮机械设计与数值仿真,17305430523@163.com
    张超(1983),男,博士,副教授,研究方向为燃气轮机叶片流动与冷却、高效能源动力机械设计,本文通信作者,czhangxj@email.tjut.edu.cn
  • 基金资助:
    国家自然科学基金项目(12402324)

Performance Analysis of Ammonia-Doped Combustion in Micro Gas Turbine Combustion Chamber

Zhiting TONG1,2, Yue FAN1,2, Xinxia LIU1,2, Chao ZHANG1,2   

  1. 1.Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control (Tianjin University of Technology), Nankai District, Tianjin 300384, China
    2.National Demonstration Center for Experimental Mechanical and Electrical Engineering Education (Tianjin University of Technology), Nankai District, Tianjin 300384, China
  • Received:2025-04-17 Revised:2025-05-19 Published:2026-04-30 Online:2026-04-21
  • Supported by:
    National Natural Science Foundation of China(12402324)

摘要:

目的 针对分布式能源中微型燃气轮机碳排放偏高的问题,研究了某10 kW微型燃气轮机燃烧室掺氨条件下的燃烧特性。 方法 通过计算流体力学数值模拟,耦合Okafor详细机理,分析了不同掺氨比、当量比对燃烧效率和NO、CO排放的影响。 结果 随着掺氨比从0增大至1.0,燃烧室出口流体速度从62.27 m/s增大至63.69 m/s,总压恢复系数从97.81%降低至97.18%;CO质量分数显著减少至接近0,但NO质量分数从1.16×10-4增至3.68×10-4,表明氨燃料虽然降低了CO排放,但增加了NO生成;燃烧效率也略有下降,从98.14%下降至97.64%。当量比对燃烧性能和排放有显著影响,低当量比时NO排放量较低,当量比达到1.0时NO排放达到峰值,富燃条件下NO排放减少,但燃烧效率也降低。 结论 甲烷/氨气的应用需在总压恢复系数、NO和CO排放、燃烧效率之间寻求平衡,并需要进一步优化设计,以实现高效、低排放的燃烧性能。

关键词: 微型燃气轮机, 甲烷/氨气混合燃料, 燃烧特性, 污染物排放, 数值模拟, 掺氨比, 当量比

Abstract:

Objectives Aiming at the problem of high carbon emission of micro gas turbine in distributed energy, this study investigates the combustion characteristics of a 10 kW micro gas turbine combustion chamber under ammonia-blended conditions. Methods CFD simulations coupled with the detailed Okafor mechanism are conducted to analyze the effects of varying ammonia blending ratios and global equivalence ratios on combustion efficiency, NO and CO emissions. Results As the ammonia ratio increases from 0 to 1.0, the fluid velocity in the combustion chamber outlet increases from 62.27 m/s to 63.69 m/s, and the total pressure recovery coefficient decreases from 97.81% to 97.18%. Additionally, CO mass fraction significantly decreases to near 0, while the NO mass fraction increases from 1.16×10-4 to 3.68×10-4, indicating that ammonia reduces CO emissions but increases NO formation. Combustion efficiency slightly declines from 98.14% to 97.64%. The equivalence ratio has a notable impact on performance and emissions, with lower NO emissions at low equivalence ratios, NO emissions peaking at an equivalence ratio of 1.0, and decreasing under fuel-rich conditions, though combustion efficiency also declines. Conclusions The application of methane/ammonia mixtures requires a balance among total pressure recovery coefficient, NO and CO emissions, and combustion efficiency. Further design optimization is needed to achieve efficient and low-emission combustion performance.

Key words: micro gas turbine, methane/ammonia fuel mixture, combustion characteristics, pollutant emissions, numerical simulation, ammonia blending ratios, equivalence ratio

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