Effect of naphthalene addition to ethanol in distributed combustion

Feser, Joseph S.; Bassioni, Ghada; Gupta, Ashwani K.

doi:10.1016/j.apenergy.2018.02.090

Cited by 16 publications

(5 citation statements)

References 16 publications

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“…In fact, according to experimental tests reported in the literature, no variation in the type of molecules found in O 2 /N 2 and O 2 /CO 2 environment oxidation is expected. Obviously, for O 2 /N 2 environments, a small number of nitrogen compounds was reported . However, during the simulation time used we did not notice a considerable amount of NO x or breakdown of N 2 .…”

Section: Results and Discussionsupporting

confidence: 84%

“…Obviously, for O 2 /N 2 environments, a small number of nitrogen compounds was reported. 52 However, during the simulation time used we did not notice a considerable amount of NO x or breakdown of N 2 . The analysis of Figure 1 shows that despite the fact that the same main species were detected in both environments, the interconnection between the nodes indicated more reactivity in O 2 /CO 2 media (lines represent the possibility of a reaction, being one species a reagent and the other a product).…”

Section: Resultssupporting

confidence: 64%

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ReaxFF Study of Ethanol Oxidation in O₂/N₂ and O₂/CO₂ Environments at High Temperatures

Arvelos

Hori

2020

J. Chem. Inf. Model.

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The goal of this study was to investigate the reaction mechanisms linked with the oxy-fuel combustion of ethanol (C 2 H 6 O). The oxidation of ethanol in O 2 /N 2 and O 2 /CO 2 environments was examined using reactive molecular dynamics in the temperature range from 2200 to 3000 K at constant density media and O 2 /fuel ratio equals to 0.5. The main reactions were examined to supply a description of the ethanol oxidation behavior, the main product distribution, and the corresponding time evolution behavior in the atomic scale. It has been noted that the oxidation of C 2 H 6 O was initiated mainly from the same routes in both environments generating the same main species. However, the key reaction pathways were different depending on the media. We noticed an increase of CO formation when N 2 was replaced by CO 2 molecules, increasing the net flux of the following reactions: by CO 2 + H → CO + OH and CO 2 + CHO → OCOH + CO. This work also studied the effect of increasing O 2 concentration (O 2 /fuel ratio equals to 0.5, 1.0, and 2.0) in O 2 /CO 2 combustion. During the simulations, high oxygenated and unstable species were detected such as carbonates and carboxyl radicals. The change of the O 2 /fuel ratio from 0.5 to 2.0 lead to an increase of CO 2 formation mainly from O 2 + OCOH → CO 2 + HO 2 and O 2 + CO → CO 2 + O reactions. In addition, the increase of O 2 concentration attenuated the effect of CO 2 and could increase the occurrence of reactions that lead to flame cessation.

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Section: Results and Discussionsupporting

confidence: 84%

Section: Resultssupporting

confidence: 64%

ReaxFF Study of Ethanol Oxidation in O₂/N₂ and O₂/CO₂ Environments at High Temperatures

Arvelos

Hori

2020

J. Chem. Inf. Model.

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“…In the inner reaction zone, fuel reacts in hot and rich conditions which leads to intermediate species that oxidize in the outer reaction zone. The presence of swirler as well as the use of combustion chamber geometry that allow very high recirculation ratios make the differences in inner and outer flame regions to almost disappear, as can be seen in the combustion region detected in the swirl burner by Gupta and coworkers , and Kumar et al both working in MILD combustion conditions.…”

Section: Bioderived Combustible Liquidsmentioning

confidence: 99%

“…Analogously, CO levels are below 10 ppm almost in the whole equivalence ratio range and are also independent of considered alcohols. It is worth noting that by adding naphtalene to ethanol in order to increase the heating value of ethanol of about 9%, Gupta et al 129 demonstrated that neither NO x nor CO are affected in the MILD condition, keeping their very low overall values. The same outcome was pointed out in the cases of hepthane/ethanol and kerosene/ethanol mixtures.…”

Section: Bioderived Combustible Liquidsmentioning

confidence: 99%

MILD Combustion and Biofuels: A Minireview

Sabia¹,

Sorrentino

Ariemma³

et al. 2021

Energy Fuels

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Even in the presence of the formidable growth of renewable energy sources, advanced combustion processes have and will continue to have an irreplaceable role as a driving force for energy market. This is indeed motivated by the same huge amount of energy that can be conveniently stored in the form of energy carriers, made available from the renewable sources. The coupling of the appropriate combustion conversion technology with locally available biofuels certainly is among the most effective solutions, now on the table, to face the decarbonization challenge. In this framework, moderate or intense low oxygen dilution (MILD) combustion is among the best candidates to support the transition toward the net zero emission target. Indeed, due to its inherent features, it is highly fuel flexible and efficient, allowing for the utilization of whatever energy carrier can be considered in the decarbonization strategy. It is also characterized by an inherent low or absent pollutant emission. The novelty of this minireview is to highlight the relevance of the kinetics involved in MILD combustion processes with particular focus on biofuels, identifying invariant temperatures, relevant for process stabilization for any energy carrier. A critical evaluation of advantages and drawbacks of the use of raw bioliquids in MILD combustion conditions is reported. Then, challenges, open questions, and future perspectives on the use of biofuel in MILD combustion are discussed.

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“…Burning fossil fuels changes the radiation balance and leads to climate change by emitting large amounts of greenhouse gases [ 1 ]. Fossil fuels are neither sustainable, given their limited amounts, nor environmentally friendly.…”

Section: Introductionmentioning

confidence: 99%

Studying the Effect of High Substrate Temperature on the Microstructure of Vacuum Evaporated TAPC: C60 Organic Solar Thin Films

et al. 2021

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Organic solar cells (OSCs), also known as organic photovoltaics (OPVs), are an emerging solar cell technology composed of carbon-based, organic molecules, which convert energy from the sun into electricity. Key for their performance is the microstructure of the light-absorbing organic bulk heterojunction. To study this, organic solar films composed of both fullerene C60 as electron acceptor and different mole percentages of di-[4-(N,N-di-p-tolyl-amino)-phenyl]-cyclohexane (TAPC) as electron donor were evaporated in vacuum in different mixing ratios (5, 50 and 95 mol%) on an ITO-coated glass substrate held at room temperature and at 110 °C. The microstructure of the C60: TAPC heterojunction was studied by grazing incidence wide angle X-ray scattering to understand the effect of substrate heating. By increasing the substrate temperature from ambient to 110 °C, it was found that no significant change was observed in the crystal size for the C60: TAPC concentrations investigated in this study. In addition to the variation done in the substrate temperature, the variation of the mole percent of the donor (TAPC) was studied to conclude the effect of both the substrate temperature and the donor concentration on the microstructure of the OSC films. Bragg peaks were attributed to C60 in the pure C60 sample and in the blend with low donor mole percentage (5%), but the C60 peaks became nondiscernible when the donor mole percentage was increased to 50% and above, showing that TAPC interrupted the formation of C60 crystals.

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Effect of naphthalene addition to ethanol in distributed combustion

Cited by 16 publications

References 16 publications

ReaxFF Study of Ethanol Oxidation in O₂/N₂ and O₂/CO₂ Environments at High Temperatures

ReaxFF Study of Ethanol Oxidation in O₂/N₂ and O₂/CO₂ Environments at High Temperatures

MILD Combustion and Biofuels: A Minireview

Studying the Effect of High Substrate Temperature on the Microstructure of Vacuum Evaporated TAPC: C60 Organic Solar Thin Films

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Effect of naphthalene addition to ethanol in distributed combustion

Cited by 16 publications

References 16 publications

ReaxFF Study of Ethanol Oxidation in O2/N2 and O2/CO2 Environments at High Temperatures

ReaxFF Study of Ethanol Oxidation in O2/N2 and O2/CO2 Environments at High Temperatures

MILD Combustion and Biofuels: A Minireview

Studying the Effect of High Substrate Temperature on the Microstructure of Vacuum Evaporated TAPC: C60 Organic Solar Thin Films

Contact Info

Product

Resources

About

ReaxFF Study of Ethanol Oxidation in O₂/N₂ and O₂/CO₂ Environments at High Temperatures

ReaxFF Study of Ethanol Oxidation in O₂/N₂ and O₂/CO₂ Environments at High Temperatures