Kinetic and CFD Modeling of Exhaust Gas Reforming of Natural Gas in a Catalytic Fixed‐Bed Reactor for Spark Ignition Engines

Arman, A; Hagos, Ftwi Yohaness; Abdullah, Abdul Adam; Aziz, A. Rashid A.; Mamat, Rizalman; Cheng, Chin Kui; Vo, Dai‐Viet N.

doi:10.1002/ceat.201900474

Cited by 9 publications

(2 citation statements)

References 32 publications

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“…In order to design a methane reformer, it is necessary to study the methane reforming mechanism. At present, there are a lot of examples of research on methane reforming based on chemical reaction kinetics [19][20][21]. Delgado et al [22] established a detailed reaction mechanism of catalytic conversion of methane over the nickel catalyst, conducted experimental and kinetic simulation studies on the methane reforming process, and established a kinetic model that can predict the product distribution of the methane reforming process.…”

Section: Introductionmentioning

confidence: 99%

Simulation Analysis of Methane Exhaust Reforming Mechanism Based on Marine LNG Engine

Shi,

Yan,

Zhu

et al. 2023

Atmosphere

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LNG is a potential alternative fuel for ships. Generating H2 through exhaust reforming is an effective method to improve the performance of the LNG engine and reduce its pollutant emissions. It is necessary to study the mechanism of methane exhaust reforming to guide the design of the reformer. Based on the detailed mechanism, the characteristics of methane reforming reaction were studied for a marine LNG engine. Firstly, the reforming characteristics of exhaust were studied. The results show that methane reforming requires a lean oxygen environment, and the hydrogen production reaction will not occur when the O2 concentration is too high. Then, the effects of the O2/CH4 ratio (0.2–1) and H2O/CH4 ratio (0–2) on the reforming reaction were studied. The results show that under O2/CH4 = 0.4, the molar fraction of hydrogen at the outlet of the reactor decreases with the increase in the H2O/CH4 ratios. Finally, a mechanism analysis was conducted. The results show that an oxidation reaction occurs first and then the steam reforming reaction occurs on palladium-based catalysts.

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Section: Introductionmentioning

confidence: 99%

Simulation Analysis of Methane Exhaust Reforming Mechanism Based on Marine LNG Engine

Shi,

Yan,

Zhu

et al. 2023

Atmosphere

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“…Most of the hydrogen production is conducted through steam reforming of light fossil fuels like NG, partial oxidation of heavy fossil fuels, coal and biomass gasification, water electrolysis, 32 and onboard catalytic fuel reformer technology in transportation sector. [34][35][36] It should be noted that by using the steam reforming of natural gas technology, CO2 and other greenhouse gases will be produced along with hydrogen. 32 Also, the downside of using the onboard catalytic fuel reformer technology is the production of carbon monoxide along with hydrogen which is known as synthesis gas or syngas.…”

Section: Introductionmentioning

confidence: 99%

Maximum reduction in greenhouse gas emissions by complete replacement of natural gas with pure hydrogen as a sole low reactive fuel in a RCCI engine

Sattarzadeh

Ebrahimi

Jazayeri

2022

International Journal of Engine Research

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In order to maximum reduction in hydrocarbon fuels consumption as the largest source of greenhouse gas emissions, the aim of this study is to evaluate a RCCI engine performance fueled with diesel fuel and pure hydrogen as sole low reactive fuel. For this purpose, a single-cylinder heavy-duty diesel engine with bathtub piston bowl profile and compression ratio of 14.88:1 is assessed that operates at its mid-load range from 9.4 to 13.5 bar gross IMEPs. In order to overcome the NOx challenge resulted from using pure hydrogen, the use of suitable amount of EGR and nitrogen addition as air-hydrogen diluents along with the advanced SOI timing were employed. The simulation results show that in a hydrogen-fueled RCCI engine, while reducing the diesel fuel energy share as the only supplier of air-hydrogen mixture ignition energy to about 13%, the HES percentage can be enhanced up to 87%. Although, the SOC will occur with a long delay and the CA50 will take place about 15°CA after the TDC compared to the experimental data, however, the maximum loss of the engine load is less than 6% with the GIE of more than 48% without any exposure to diesel knock. Moreover, not only the EURO VI level of the CO and UHC emissions and the EPA level of Formaldehyde emission can be met, but also, the EURO VI level of NOx emission as the most important challenge of a hydrogen-fueled engine is achievable.

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Inlet baffle structural optimization and reforming performance of exhaust gas-fuel reformer for marine LNG engine

Song,

Li,

Huang

et al. 2024

Applied Thermal Engineering

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Kinetic and CFD Modeling of Exhaust Gas Reforming of Natural Gas in a Catalytic Fixed‐Bed Reactor for Spark Ignition Engines

Cited by 9 publications

References 32 publications

Simulation Analysis of Methane Exhaust Reforming Mechanism Based on Marine LNG Engine

Simulation Analysis of Methane Exhaust Reforming Mechanism Based on Marine LNG Engine

Maximum reduction in greenhouse gas emissions by complete replacement of natural gas with pure hydrogen as a sole low reactive fuel in a RCCI engine

Inlet baffle structural optimization and reforming performance of exhaust gas-fuel reformer for marine LNG engine

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