Study on carbon emission and cost of co-firing green hydrogen or green ammonia in active gas combined cycle units

YUAN Bing; TANG Xiaofeng; JIANG Xiaofeng; NIU Ben; SONG Guohui

doi:10.19944/j.eptep.1674-8069.2026.04.015

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Study on carbon emission and cost of co-firing green hydrogen or green ammonia in active gas combined cycle units

Carbon capture and monitoring technology | 更新时间：2026-10-14

- Study on carbon emission and cost of co-firing green hydrogen or green ammonia in active gas combined cycle units
- Electric Power Technology and Environmental Protection Vol. 42, Issue 4, Pages: 670-678(2026)
- 作者机构：
  
  1.中国能源建设集团江苏省电力设计院有限公司，江苏南京 211102
  2.江苏省多能融合与灵活性发电技术重点实验室（南京工程学院能源与动力工程学院），江苏南京 211167
- 作者简介：
- 基金信息：
- DOI：10.19944/j.eptep.1674-8069.2026.04.015
  CLC： TK01;TK91
- Received：24 December 2025，
  
  Accepted：06 April 2026，
  
  Published：15 August 2026
- 稿件说明：
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袁兵,唐小锋,姜小峰，等.现役燃气联合循环机组掺烧绿氢或绿氨的碳排放与经济性研究[J].电力科技与环保,2026,42(4):670-678.

YUAN Bing, TANG Xiaofeng, JIANG Xiaofeng, et al. Study on carbon emission and cost of co-firing green hydrogen or green ammonia in active gas combined cycle units[J]. Electric Power Technology and Environmental Protection, 2026, 42(4):670-678.
袁兵,唐小锋,姜小峰，等.现役燃气联合循环机组掺烧绿氢或绿氨的碳排放与经济性研究[J].电力科技与环保,2026,42(4):670-678. DOI： 10.19944/j.eptep.1674-8069.2026.04.015.

YUAN Bing, TANG Xiaofeng, JIANG Xiaofeng, et al. Study on carbon emission and cost of co-firing green hydrogen or green ammonia in active gas combined cycle units[J]. Electric Power Technology and Environmental Protection, 2026, 42(4):670-678. DOI： 10.19944/j.eptep.1674-8069.2026.04.015.

摘要

目的

掺烧绿氢或绿氨是现役燃气联合循环机组的重要减碳措施，但其降碳效益与成本代价需要综合评估。本文旨在量化分析现役燃气联合循环机组掺烧绿氢或绿氨的经济性，评估其对发电成本的影响，为未来电力市场机制设计及能源政策制定提供决策参考。

方法

本文以使用西气东输天然气的某F级热电联产机组为对象，首先研究掺混绿氢或绿氨后混合燃气的互换性、爆炸极限和吸入毒性等性质，以确定不改造燃烧器前提下的最大掺混量；然后使用生命周期评价方法研究供电和供热的碳排放强度；最后分析供电成本和供热成本的变化，以阐明不同减碳措施的经济性代价。

结果

研究表明，受互换性限制，绿氢和绿氨的最大掺混量分别为18.3%和8.0%，此时相对爆炸极限范围略有扩大，掺氨燃气的吸入毒性属于“吸入可能有害”，混合燃气较为安全。供电和供热的生命周期碳排放随掺混量的升高而线性降低。掺氢量18.3%或掺氨量8.0%时，供电碳排放平均值分别为0.343 kgCO

e/（kW·h）或0.352 kgCO

e/（kW·h）；供热碳排放平均值分别为0.056 tCO

e/GJ或0.0

57 tCO

e/GJ；减碳幅度分别为4.5%和2.2%。同时，掺混绿氢或绿氨引起的成本增幅分别不超过16.4%或7.8%，碳减排成本分别不超过234.5 元/tCO

e或108.56 元/tCO

e。在绿氢或绿氨成本分别不超过35 000元/t或5 900元/t时，现役燃气联合循环机组少量掺烧绿氢或绿氨是一项安全且经济的小幅降碳措施。

结论

在不改变机组基础结构的前提下，现役燃气联合循环机组的“小幅度掺烧”策略是实现碳达峰、碳中和的安全、经济且有效的过渡性路径，未来可进一步探索使用沼气、生物合成天然气等互换性更佳的低碳燃料。

Abstract

Objective

Co-firing green hydrogen or green ammonia is an important carbon reduction measure for active gas combined cycle units

but its carbon reduction benefit and cost need to be comprehensively evaluated. The purpose of this study is to quantitatively analyze the economy of co-firing green hydrogen or green ammonia in active gas combined cycle units

evaluate its impact on power generation costs

and provide decision-making reference for future power market mechanism design and energy policy formulation.

Methods

A F-class combined heat and power plant fueled with West-East gas was studied. Firstly

the key properties of the fuel gas blended with green hydrogen or ammonia were studied to determine the maximum blending amount without modifying the combustor

including interchangeability

explosion limits

and inhalation toxicity. Then

the life cycle assessment method was used to analyze the impacts of blending amount on the carbon emissions of power and heat. Finally

the increases in power and heat costs were investigated to clarify the economic costs of different decarbonization measures.

Results

The results show that the maximum mixing amount of green hydrogen and green ammonia is 18.3% and 8.0%

respectively

which is limited by interchangeability. Then

the corresponding relative explosion limit range is slightly expanded. The inhalation toxicity of ammonia-doped gas is inhalation may be harmful

and the mixed gas is relatively safe. The life cycle carbon emissions of power supply and heating decrease linearly with the in

crease of blending amount. When the hydrogen content is 18.3% or the ammonia content is 8.0%

the average carbon emission of power supply is 0.343 kgCO

e/(kW·h) or 0.352 kgCO

e/(kW·h)

respectively. The average carbon emissions from heating were 0.056 tCO

e/GJ or 0.057 tCO

e/GJ

respectively. The carbon reduction rates were 4.5% and 2.2%

respectively. At the same time

the cost increase caused by mixing green hydrogen or green ammonia does not exceed 16.4% or 7.8%

respectively

and the carbon reduction cost does not exceed 234.5 yuan/tCO

e or 108.56 yuan/tCO

respectively. A small amount of blended combustion of green hydrogen or ammonia in the commissioned gas combined cycle is a safe and economical measure with small reduction in carbon emission

when the cost does not exceed 35 000 yuan/tonne or 5 900 yuan/tonne

respectively.

Conclusion

On the premise of not changing the basic structure of the unit

the "small-scale co-firing" strategy of the active gas combined cycle unit is a safe

economical and effective transitional path to achieve carbon peak and carbon neutralization. In the future

we can further explore the use of biogas

bio-synthetic natural gas and other low-carbon fuels with better interchangeability.

关键词

Keywords

references

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