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2025 Vol.30, Issue 1 Preview Page

Research Article

Optimization Study on Ammonia Vaporization Energy for Ammonia Power Generation in a Coal-Fired Power Plant

석탄화력 발전 플랜트의 암모니아 활용을 위한 암모니아 기화 에너지 최적화 연구

Jonghwan An12
,
Hyeonrok Choi12
,
Won Yang1
,
Seong-il Kim1†
안 종환12
,
최 현록12
,
양 원1
,
김 성일1†
1Low-carbon Emission Control Technology R&D Department, Research Institute of Sustainable Development Technology, Korea Institute of Industrial Technology
2School of Mechanical Engineering, Sungkyunkwan University
1한국생산기술연구원 지속가능기술연구소 저탄소배출제어연구부문
2성균관대학교 기계공학부
*Corresponding Author
31 March 2025. pp. 67-79
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Abstract

Ammonia is a carbon-free fuel that emits no carbon dioxide during combustion. Ammonia co-firing in coal-fired power plants is emerging as a transitional technology for carbon neutrality. Under the ammonia co-firing condition, the plant efficiency is affected by changes in the heat transfer mechanism to the steam cycle. Especially, the energy required for ammonia vaporization reduces plant efficiency. To evaluate these challenges, a process simulation model was developed for the 870 MWe supercritical power plant, integrating the boiler, turbine cycle, and flue gas treatment systems. Various heat recovery methods for ammonia vaporization were assessed, including flue gas sensible heat, steam sensible heat, and combinations of seawater with flue gas or steam. When seawater is utilized, it supplies most of the energy required for ammonia vaporization, thereby minimizing efficiency losses. In particular, the integration of seawater with flue gas reduces efficiency losses to nearly 0%, depending on the vaporizer installation location. Therefore, this method is considered the most efficient heat recovery method for ammonia vaporization in terms of overall plant performance. These findings provide practical insights into the utilization of ammonia co-firing, which can improve plant performance and reduce carbon emissions.

Keywords
Ammonia co-firing
Pulverized coal boiler
Ammonia vaporization energy
Process simulation
Plant efficiency
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Information
  • Publisher :The Korean Society of Combustion
  • Publisher(Ko) :한국연소학회
  • Journal Title :Journal of the Korean Society of Combustion
  • Journal Title(Ko) :한국연소학회지
  • Volume : 30
  • No :1
  • Pages :67-79
  • Received Date : 2025-01-14
  • Revised Date : 2025-02-19
  • Accepted Date : 2025-03-11
  • DOI :https://doi.org/10.15231/jksc.2025.30.1.067
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