Flame Structure and NO emission in A Single-stage (Methane +Ammonia)/Air Premixed Single Combustor

Juhan Kim; Chun Sang Yoo; Suk Ho Chung; Jeong Park

doi:10.15231/jksc.2023.28.1.026

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2023 Vol.28, Issue 1 Preview Page Next Page

Research Article

Flame Structure and NO emission in A Single-stage (Methane +Ammonia)/Air Premixed Single Combustor (메탄+암모니아)/공기 예혼합 1단 연소기에서의 화염구조와 NO 배출

31 March 2023. pp. 26-32

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Abstract

Numerical study is conducted to clarify flame structures and NO emissions in a single-staged (ammonia + methane)/air premixed combustion, which can be presumed with a counterflow configuration. To clarify the important role of downstream interaction on flame characteristics and NO emissions, injecting (80% methane+20% ammonia)/air mixtures to the ambiences of nitrogen and air is studied. When lean blended fuel/air premixed mixtures are injected to the ambiences of nitrogen and air, there are no significant change in flame structure and NO emission. When the rich premixed mixtures are injected to air (nitrogen) ambience, an interacting flame consisting of a rich premixed flame and a diffusion flame (a single rich premixed flame) is generated. The difference in such flame configurations completely alters flame structure and NO emission behavior. The present results can be utilized as a baseline case in reducing NO emission via various combinations such as ammonia-air, methane-air, pure air, and (ammoniar+methane)/air in the secondary zone of a two-stage ammonia blended methane/air premixed combustor.

Keywords

Downstream interaction

NO emission

Ammonia combustion

References

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Information

Publisher :The Korean Society Combustion
Publisher(Ko) :한국연소학회
Journal Title :Journal of The Korean Society Combustion
Journal Title(Ko) :한국연소학회지
Volume : 28
No :1
Pages :26-32
Received Date : 2023-01-14
Revised Date : 2023-01-29
Accepted Date : 2023-01-29
DOI :https://doi.org/10.15231/jksc.2023.28.1.026

Journal of The Korean Society Combustion ISSN:1226-0959(Print) 2466-2089(Online) 한국연소학회지

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