A Numerical Study of Unsteady Combustion Characteristics of H2 Enriched Natural Gas

Tae-Kyun Oh

doi:10.15231/jksc.2023.28.1.017

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2023 Vol.28, Issue 1 Preview Page Next Page

Research Article

A Numerical Study of Unsteady Combustion Characteristics of H₂ Enriched Natural Gas 수소가 첨가된 천연가스의 비정상연소특성에 대한 수치해석적 연구

31 March 2023. pp. 17-25

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Abstract

The increase of 1.5°C global warming above the pre-industrial level has directly caused large risks of ecosystem and human life as well as severe changes in the climate. Electricity production in Korea is achieved in a large portion(44% as of 2020) by coal thermal power generation during which it discharges greenhouse gases, PM and nitric oxide responsible for photochemical smog in a crowded city. The hydrogen enriched LNG is a powerful alternative of coal as a fuel generation because it emits less pollutants and is considered a clean fuel for thermal power generation. In the present study, combustion analyses have been numerically done on various mixed fuels of methane, ethane and hydrogen as a model of hydrogen enriched natural gas in a gas turbine combustor. GRI3.0 kinetic mechanism which consists of 53 chemical species and 325 reaction steps has been used to calculate steady and unsteady combustion process of hydrogen enriched natural gas. Emissions, heat release rate and ignition delay time in a premixed flame have been numerically investigated through post-processing procedure to simulate gas turbine combustion in a thermal power station.

Keywords

Carbon neutrality

Hydrogen

Gas turbine

NO_x

Ignition delay time

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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 :17-25
Received Date : 2023-01-26
Revised Date : 2023-01-27
Accepted Date : 2023-01-27
DOI :https://doi.org/10.15231/jksc.2023.28.1.017

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

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