Investigations on laminar premixed flame characteristics of ethyl acetate

Oppong, Francis; Luo, Zhongyang; Li, Xiaolu; Xu, Cangsu

doi:10.1016/j.combustflame.2021.111454

Cited by 16 publications

(4 citation statements)

References 37 publications

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“…The mechanism in ref was developed on the basis of refs to simulate the NO in flame. The chemical mechanism in ref was developed for gasoline surrogate, which has been verified by Khosousi et al Oppong et al pointed out that among the three chemical mechanisms for EA, ,, the mechanism in ref was more accurate.…”

Section: Methodsmentioning

confidence: 92%

“…EA can be used as a fuel additive in internal combustion engines to alter soot propensity. 9 Kohse et al 10 discussed harmful pollutant emissions of biofuels that included esters and found that the biofuel-produced polycyclic aromatic hydrocarbon (PAH) and soot were similar to those of conventional hydrocarbon fuels. Pepiot et al 11 analyzed the effect of oxygenated fuels on soot reduction tendency and confirmed that the reduction of soot formation was attributed to the oxygenated functional groups and dilution effect of esters.…”

Section: Introductionmentioning

confidence: 99%

“…EA can be used as a fuel additive in internal combustion engines to alter soot propensity . Kohse et al discussed harmful pollutant emissions of biofuels that included esters and found that the biofuel-produced polycyclic aromatic hydrocarbon (PAH) and soot were similar to those of conventional hydrocarbon fuels.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Biofuels on Soot and NO Formation during Gasoline Combustion

et al. 2022

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Cofiring of fossil fuels with renewable biomassderived fuels is a promising way to reduce CO 2 emissions. This work numerically investigated the effects of biofuel addition on soot and NO formation in gasoline laminar diffusion flames. Four gasoline/biofuel mixtures, where the biofuel was the mixture of ethanol (EtOH) and ethyl acetate (EA) in different fractions, were used to investigate how the soot volume fraction (SVF) and NO concentration responded with biofuel addition. The results showed that the peak temperature and peak NO concentration increased by 3.02 and 130%, respectively, when EA was increased from 0 to 75% in the biofuel, while the peak SVF was reduced by 75.4%. The flame was elevated vertically due to the low burning velocity and the long ignition delay time of EA. The reaction C 6 H 5 CH 3 + H < = > A1 + CH 3 to form the incipient ring (A1) was limited by the decreased H radicals, which in turn limited the processes of polycyclic aromatic hydrocarbon (PAH) growth, inception, and surface growth and eventually hindered soot formation. Pathway analysis of NO formation showed that the increasing tendency of NO concentration along with increased EA was a result of the combined influence of the thermal NO pathway and NO reburning cycle pathway, with the former playing a major role.

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Section: Methodsmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

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Effects of Biofuels on Soot and NO Formation during Gasoline Combustion

et al. 2022

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“…EMC is highly significant for reducing engine particulate and smog emissions . The isobaric combustion of EMC in a constant volume combustion chamber (CVCC) used in this work creates circumstances comparable to those in an engine, which is conducive to the development of high-performance internal combustion engines. − …”

Section: Introductionmentioning

confidence: 99%

Laminar Combustion Characteristics of Spherically Propagating Ethyl Methyl Carbonate Flames

Zhang,

Zheng,

Wang

et al. 2024

Energy Fuels

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The laminar combustion characteristics of ethyl methyl carbonate flames were investigated at initial pressures of 70–130 kPa, equivalence ratios of 0.6–1.4, and an initial temperature of 373 K using a 36 L constant volume combustion chamber. The Grégoire mechanism well predicts the laminar burning velocity, pressure power exponent, and isochoric combustion pressure. The laminar burning velocity of ethyl methyl carbonate increases from 25.99 to 49.21 cm/s at an initial pressure of 100 kPa as the equivalence ratio increases from 0.6 to 1.0. Moreover, the Jin method, which assumes that one mole of ethyl methyl carbonate is decomposed into 2 mol of CH4, 1 mol of CO, and 1 mol of CO2, cannot accurately predict the laminar burning velocity of the mixtures. The pressure power exponent indicates that the pressure dependence is more inconspicuous for the mixtures near the stoichiometric ratio. The maximum isochoric combustion pressure and maximum rate of pressure rise vary nonmonotonically with the equivalence ratio, reaching a maximum at ϕ = 1.2. Empirical expressions for the experimentally obtained combustion characteristics as a function of the initial pressure and equivalence ratio were established. The reactions R806: CCOC*OOC = C2H4 + COC*OOH and R797: CCOC*OOC + H = CCJOC*OOC + H2 had the greatest effect on promoting and inhibiting the laminar burning velocity in the decomposition reaction, respectively. The sum of the peak mole fractions of H/O/OH radicals, the sum of the rate of production of the key radicals, and the heat release rate all reach their maximum values at ϕ = 1.1. The reactivity of ethyl methyl carbonate is mainly controlled by reactions involving COC*OOH. The maximum rate of pressure rise can be predicted by the sum of the peak rate of H/O/OH radical production or the heat release rate.

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Laminar combustion characteristics of methane/methanol/air mixtures: Experimental and kinetic investigations

Wang

Yang

et al. 2023

Case Studies in Thermal Engineering

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Investigations on laminar premixed flame characteristics of ethyl acetate

Cited by 16 publications

References 37 publications

Effects of Biofuels on Soot and NO Formation during Gasoline Combustion

Effects of Biofuels on Soot and NO Formation during Gasoline Combustion

Laminar Combustion Characteristics of Spherically Propagating Ethyl Methyl Carbonate Flames

Laminar combustion characteristics of methane/methanol/air mixtures: Experimental and kinetic investigations

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