[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.7837/kosomes.2019.25.6.780

Effect of Hydrogen(H₂) Addition on Flame Shape and Combustion Products in Mixed Coflow Diffusion Flames of Methane(CH₄), Ethane(C₂H₆) and Propane(C₃H₈)

Park, Ho-Yong (Design Part, Han Jin Heavy Industries and Construction Co., Ltd.)
Yoon, Sung-Hwan (Division of Marine System Engineering, Korea Maritime & Ocean University)
Rho, Beom-Seok (Education & Management Team, Korea Institute of Maritime and Fisheries Technology)
Lee, Won-Ju (Division of Marine Engineering, Korea Maritime & Ocean University)
Choi, Jae-Hyuk (Division of Marine System Engineering, Korea Maritime & Ocean University)

Publication Information

Journal of the Korean Society of Marine Environment & Safety / v.25, no.6, 2019 , pp. 780-787 More about this Journal

Abstract

As a carbon-free, green growth alternative, internal and external interest in hydrogen energy and technology is growing. Hydrogen was added to co-axial methane, methane-propane, and methane-propane-ethane diffusion flames, which are the main ingredients of LNG, to evaluate its effect on flame formation and combustion products. The variation in combustion products produced by adding hydrogen gradually to diffusion pyrolysis at room temperature and normal pressure conditions was observed experimentally by using a gas analyzer, and the shape of diffusion pyrolysis was observed step by step using a digital camera. The experimental results showed that the production volume of nitrogen oxides tended to increase and became close to linear as hydrogen was added to the diffusion pyrotechnic. This is because the relatively high temperature of heat insulation and fast combustion speed of hydrogen facilitated the production of thermal NOx. On the other hand, CO2 production tended to decrease as hydrogen was added to reduce the overall carbon ratio contained in the mixed diffusion flame of methane, methane-propane, and methane-ethane-propane. This means that the mixed fuel use of LNG-hydrogen in ships may potentially reduce emissions of CO2, a greenhouse gas.

Keywords

Diffusion flame; Hydrogen addition; Nitrogen oxide; Carbon dioxide; Carbon monoxide;

Citations & Related Records

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