Reduction of large-size combustion mechanisms of n-decane and n-dodecane with an improved sensitivity analysis method

Xi, Shuanghui; Xue, Jie; Wang, Fan; Li, Xiangyuan

doi:10.1016/j.combustflame.2020.08.052

Cited by 24 publications

(14 citation statements)

References 63 publications

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“…However, the experimental efficiencies were lower than the simulated ones by about 4.21% (optimal efficiency condition). This discrepancy was attributed to the action of microscopic variables in the experiment and agreed with other studies, wherein modeling and experiments were performed simultaneously [40,41].…”

Section: Reaction Modelingsupporting

confidence: 88%

Reaction Characteristics of NOx and N2O in Selective Non-Catalytic Reduction Using Various Reducing Agents and Additives

Park

Dong

2021

Atmosphere

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Artificial nitrogen oxide (NOx) emissions due to the combustion of fossil fuels constitute more than 75% of the total NOx emissions. Given the continuous reinforcement of NOx emission standards worldwide, the development of environmentally and economically friendly NOx reduction techniques has attracted much attention. This study investigates the selective non-catalytic reduction (SNCR) of NOx by methane, ammonia, and urea in the presence of sodium carbonate and methanol and the concomitant generation of N2O. In addition, the SNCR mechanism is explored using a chemical modeling software (CHEMKIN III). Under optimal conditions, NOx reduction efficiencies of 80–85%, 66–68%, and 32–34% are achieved for ammonia, urea, and methane, respectively. The N2O levels generated using methane (18–21 ppm) were significantly lower than those generated using urea and ammonia. Addition of sodium carbonate and methanol increased the NOx reduction efficiency by methane to ≥40% and 60%, respectively. For the former, the N2O level and reaction temperature further decreased to 2–3 ppm and 850–900 °C, respectively. The experimental results were well consistent with simulations, and the minor discrepancies were attributed to microscopic variables. Thus, our work provides essential guidelines for selecting the best available NOx control technology.

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Section: Reaction Modelingsupporting

confidence: 88%

Reaction Characteristics of NOx and N2O in Selective Non-Catalytic Reduction Using Various Reducing Agents and Additives

Park

Dong

2021

Atmosphere

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“…According to the operating conditions of the ethylenefueled scramjet combustor, 3,5,10,11,22,73 the temperature range of 900-1800 K, pressure range of 1-4 atm, and equivalence ratio range of 0.25-5.0 are chosen as the reduction conditions. The cost-effective r-DRGEP with FS method 44 and the efficient but slightly expensive improved SA method 53 are employed to perform the two stage species eliminations, followed by the reactions elimination based on the method of CSP importance index. 55 Systematic kinetic verications are conducted on the preferred skeletal mechanism intended for combustion simulation to check its reliability.…”

Section: Static Reduction Setupmentioning

confidence: 99%

Application of static integrated skeletal reduction and tabulation of dynamic adaptive chemistry in the combustion simulation of ethylene-fueled scramjet combustor

Li,

Liu,

Wang

2024

RSC Adv.

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“…Volumetric properties for binary systems of substitutes of biodiesel and diesel such as methyl esters with alkanes has contributed to elucidate the effect of chemicals . Decane and dodecane have been usually used as surrogates for fossil diesel since these are common components of fossil diesel; , the combustion characteristics for these alkanes have been widely studied, and dodecane has just about the same volatility and cetane number against fossil diesel . Experimental volumetric properties for different types of biodiesel and biodiesel blends have been reported in the literature. − Zhao et al have reported thermophysical properties for binary systems constituted by hexadecane + esters (methyl butyrate, methyl decanoate, ethyl hexanoate, and ethyl heptanoate).…”

Section: Introductionmentioning

confidence: 99%

Density Measurements and PC-SAFT Modeling for Beef Tallow Fatty Acid Methyl Esters (FAME Mixture) + Alkane up to 70 MPa

et al. 2023

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Biodiesel is mainly constituted by fatty acid alkyl esters, and the effect of adding alkane compounds is of great importance in order to analyze the changes in the thermophysical properties under high pressure that is of relevance in diesel engines. This work is aimed at the study of density behavior of two systems formed by beef tallow fatty acid methyl esters (FAME mixture) + alkane (decane or dodecane) in the temperature range of 303–393 K and in the pressure range of 0.2–68.29 MPa. Experiments were carried out by means of two vibrating tube densimeters with an expanded uncertainty in density of 0.7 kg·m–3. Transesterification of waste beef tallow by using methanol at supercritical conditions was used to obtain biodiesel. The FAME mixture was constituted by methyl tetradecanoate, methyl hexadecanoate, methyl octadecenoate, and methyl (Z)-octadec-9-enoate. Density behavior was correlated using the Tammann–Tait equation and modeled with the perturbed-chain statistical associating fluid theory (PC-SAFT) equation of state. Density correlation deviations using the Tammann–Tait equation were found to be less than 0.05% and 4.15 kg·m–3 for the average absolute deviation (AAD) and standard deviation (STD), respectively. The PC-SAFT modeling yielded an AAD = 0.11% and an STD = 1.15 kg·m–3. The behavior for density and the derived thermodynamic properties were explained in terms of the fatty acid methyl ester content.

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Reduction of large-size combustion mechanisms of n-decane and n-dodecane with an improved sensitivity analysis method

Cited by 24 publications

References 63 publications

Reaction Characteristics of NOx and N2O in Selective Non-Catalytic Reduction Using Various Reducing Agents and Additives

Reaction Characteristics of NOx and N2O in Selective Non-Catalytic Reduction Using Various Reducing Agents and Additives

Application of static integrated skeletal reduction and tabulation of dynamic adaptive chemistry in the combustion simulation of ethylene-fueled scramjet combustor

Density Measurements and PC-SAFT Modeling for Beef Tallow Fatty Acid Methyl Esters (FAME Mixture) + Alkane up to 70 MPa

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