Effects of hydrogen peroxide on combustion enhancement of premixed methane/air flames

Chen, Guan Bang; Li, Yueh Heng; Cheng, T. S.; Hsu, Hsiang‐Chin; Chao, Yei Chin

doi:10.1016/j.ijhydene.2011.07.074

Cited by 45 publications

(15 citation statements)

References 21 publications

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“…K. S. Nagaprasad et al [30] found higher engine break thermal efficiency with increased concentrations of H 2 O 2 , and D. S. -K. Ting et al [31] reported a significant reduced ignition delay with addition of H 2 O 2 . The burning rate of methane fuel was enhanced owing to the presence of OH, O, and H radicals thus produced less CO emissions [31][32]. M. C. Mulenga et al [33] reported that NOx emissions were lower as a result of a lower average cycle temperature.…”

Section: Introductionmentioning

confidence: 99%

Combustion, performance and emission characteristics of direct injection diesel engine fueled by Jatropha hydrogen peroxide emulsion

Nguyen

Dan

Asano

2014

Energy

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Recently, Jatropha, a fast growing tropical plant, has caught the attention of researchers because the oil produced from Jatrpha is a non-edible. However, worse emissions, when using raw Jatropha oil in diesel engines, have been reported in the literature due to its higher viscosity and lower volatility. Therefore, it is necessary to find some way to reduce the emissions of diesel engines. In the present research, experiments have been designed and performed to study the effects of Jatropha hydrogen peroxide emulsion on combustion, performance, and the emission characteristics of a diesel engine. Hydrogen peroxide in a solution of water at a concentration of 30% was used for making the emulsions with mixing mass ratios of 5%, 10%, and 15%. A single cylinder, four-stroke, high speed, direct injection diesel engine was used for the experiments. The acquired data were analyzed for various combustion parameters such as in-cylinder pressure, ignition delay, ignition duration, heat release, for performance parameters and emissions of CO, CO 2 , HC, NOx, and PM as well. While running the engine on the Jatropha hydrogen peroxide emulsion fuel, improvements in performance and emissions were found and the optimum mixing ratio of the solution with hydrogen peroxide was 15%.

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Section: Introductionmentioning

confidence: 99%

Combustion, performance and emission characteristics of direct injection diesel engine fueled by Jatropha hydrogen peroxide emulsion

Nguyen

Dan

Asano

2014

Energy

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“…A subsequent study conducted by Golovitchev & Piliaf 57 also found enhanced methane auto-ignition with H 2 O 2 that was more resilient than lean hydrogen gas. This decreased ignition delay is understandably evident due to the role of ‘O’ and ‘OH’ radicals produced by the immediate decomposition of H 2 O 2 57 , 58 .…”

Section: Introductionmentioning

confidence: 99%

Influence of hydrogenated diesel/H2O2 blend fuel on diesel engine performance and exhaust emission characterization

Moujdin

Khan

Abulkhair

et al. 2023

Sci Rep

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The oxygenated hydro diesel (OHD) is prepared from hydrogen peroxide (H2O2), acetone, and seaweed polysaccharide. A long-term study was carried out on the OHD fuel blend stability for about a year at various temperatures. The long-term stability shows very stable properties, no easy emulsion breaking, and a long storage period. The neat diesel and blend fuel performance test was conducted at various engine speeds, 1700–3100 RPM the diesel blend with 5 wt.% and 10 wt. % of H2O2 revealed the best fraction for reducing smoke and emissions. The blend contains 15 wt.% H2O2, revealing a significant reduction in exhaust temperature without considering the engine's performance. Moreover, the performance of the OHD also revealed an economizing rate, decreasing environmental pollution and prolonging the engine’s service life. The diesel engine performance and environmental evaluation leading to exhaust emissions characterization ($${\mathrm{CO}}_{\mathrm{X}}$$ CO X , $${\mathrm{SO}}_{\mathrm{X}}, {\mathrm{NO}}_{\mathrm{X}}$$ SO X , NO X , and others). Based on the results, the various concentrations of H2O2 are an effective method for reducing the emission of diesel engines. Decreased CO, SO2, unburned hydrocarbons, and NO2 were also observed as percentages of H2O2. Due to increased oxygen content, water content and cetane number, the number of unburned hydrocarbons from diesel fuel decreased with the addition of H2O2. Therefore, the OHD blend can significantly curtail the exhaust emission of conventional diesel fuel, which will help reduce the harmful greenhouse gas emissions from diesel fuel sources.

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“…Because CHEMKIN software has relatively perfect mechanism files for solving complex chemical reaction problems, it is often used to study flame combustion characteristics and NO X conversion mechanism. It was proved to be very effective to study the combustion characteristics and NO X emissions by using the PREMIX code of CHEMKIN (Chen et al, 2011;Gong et al, 2018). CHEMKIN and GRI-MECH 3.0 chemical kinetic models were used to simulate combustion process, which has outstanding advantages in predicting combustion chamber pressure, temperature, distribution of main combustion species and formation of nitrogen oxides (Mansha et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of the Influence of CO2 on the Combustion Characteristics and NOX of Biogas

Luo

et al. 2022

Front. Energy Res.

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The existence of inert gases such as N2 and CO2 in biogas will reduce the proportion of combustible components in syngas and affect the combustion and NOX formation characteristics. In this study, ANSYS CHEMKIN-PRO software combined with GRI-MECH 3.0 mechanism was used to numerically simulate the effects of different CO2 concentrations (CO2 volume ratio in biogas is 0–41.6%) on flame combustion temperature, flame propagation speed and nitrogen oxide formation of complex biogas with low calorific value. The results showed that when the combustion reaches the chemical equilibrium, the flame combustion temperature and flame propagation speed decrease with the increase of CO2 concentration, and the flame propagation speed decreases even more slowly. Meanwhile, the molar fraction of NO at chemical equilibrium decreases with the increase of CO2 concentration and the decrease is decreasing, which indicates that the effect of CO2 concentration in biogas on NO is simpler. While the molar fraction of NO2 does not change regularly with the change of CO2 concentration, the effect of CO2 concentration in biogas on NO2 is complicated. The highest molar fraction of NO2 was found at chemical equilibrium when the CO2 concentration was 33.6%, when the target was a typical low calorific value biogas.

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Effects of hydrogen peroxide on combustion enhancement of premixed methane/air flames

Cited by 45 publications

References 21 publications

Combustion, performance and emission characteristics of direct injection diesel engine fueled by Jatropha hydrogen peroxide emulsion

Combustion, performance and emission characteristics of direct injection diesel engine fueled by Jatropha hydrogen peroxide emulsion

Influence of hydrogenated diesel/H2O2 blend fuel on diesel engine performance and exhaust emission characterization

Numerical Simulation of the Influence of CO2 on the Combustion Characteristics and NOX of Biogas

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