Perspectives of the Use of Rapeseed Oil for the Doping of Waste-Based Industrial Fuel

Valiullin, Timur; Egorov, Roman I.; Стрижак, П. А.

doi:10.1021/acs.energyfuels.7b01598

Cited by 12 publications

(5 citation statements)

References 12 publications

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“…Figure shows the ignition and combustion device of nanofluid fuels, which is similar to the device used in previous studies. − The device consists of a sample transfer system, a reaction system, a temperature measurement system, and a data acquisition system. There are two thermocouples.…”

Section: Methodsmentioning

confidence: 99%

Ignition and Combustion Characteristics of Heptane-Based Nanofluid Fuel Droplets

et al. 2019

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Nanofluid fuels are promising fuels in the fields of spaceflight and aviation. Their stability is a critical constraint for potential applications. Oleic acid can enhance the stability of nanofluid fuels, but it influences the ignition and combustion performance of nanofluid fuels. In this study, the effects of various concentrations of oleic acid and nanoparticles (NPs) on the ignition and combustion performance of the heptane-based nanofluid droplets were studied using a high-temperature tubular resistance furnace system at 600–700 °C. The ignition delay times, ignition temperatures, and combustion processes of all samples were measured. The results show that with the increase of temperature, the ignition delay times and ignition temperatures of the pure heptane, heptane with addition of oleic acid, and heptane-based nanofluid droplets decrease. The addition of oleic acid into the heptane, its ignition delay time and ignition temperature significantly increase with the increase in oleic acid concentration, which are greatly increased by 60 and 40%, respectively, for the heptane droplet with 2% oleic acid compared with the heptane droplet. Oleic acid makes the heptane droplet to undergo microexplosion, surfactant combustion, and secondary extinguishment. With the increase in temperature and concentration of oleic acid, the microexplosion and the number of generated bubbles are more obvious. Al NPs have little influence on the ignition delay time of the heptane droplet with oleic acid at 600 and 650 °C, while the enhancement of nanoparticles is significant at 700 °C. In addition, Al NPs can decrease the ignition temperature of heptane-based nanofluid droplets and the decreased percent reaches 17%, but the promoting effect is weaker than the inhibition effect of oleic acid. With the increase in concentration of Al NPs, microexplosion of the heptane-based nanofluid droplet will be enhanced.

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Section: Methodsmentioning

confidence: 99%

Ignition and Combustion Characteristics of Heptane-Based Nanofluid Fuel Droplets

et al. 2019

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“…The convective heating was realized putting the fuel sample into the glass pipe with hot air flow, as shown in Figure a. The details about this experiment are available in our previous papers. − Such an approach allows us to make almost pure convective heating because the glass has a low enough emissivity coefficient and radiation from the heater was screened by a bend of the air channel. The air was heated by the flow heater Leister LE5000HT that allows for a flow temperature up to 1173 K with the flow velocity of 2 m/s.…”

Section: Measurements Of the Idtmentioning

confidence: 99%

“…The fuel samples (droplets with a size of 1.5 ± 0.2 mm) were prepared as explained in refs and . The basic CWS consists of the sludge of fiery coal (∼36 wt % water and ∼54 wt % coal powder) and 10 wt % waste fuel oil.…”

Section: Measurements Of the Idtmentioning

confidence: 99%

“…For example, the CWS made of a highly available waste of the coal enrichment is a cheap fuel, which is attractive for numerous industrial heaters . Such fuels have some interesting features, such as a lower level of harmful exhausts (as a result of the low combustion temperature) and a very low price relative to the typical energetic coal. , However, the ignition of such water-filled compositions is very slow . Various additives (such as waste petrochemicals, wooden waste, metallic powders, or lime) are generally used to accelerate the ignition of waste-derived CWS as well as play the role of absorbers of harmful exhausts, combustion temperature stabilizers, etc.…”

Section: Idt Versus Temperature For Different Types Of Heat Transfermentioning

confidence: 99%

“…CWS 1 is a basic fuel composition. CWS 2 corresponds to a slurry with the addition of 10 wt % rapeseed oil, instead of waste fuel oil.…”

Section: Idt Versus Temperature For Different Types Of Heat Transfermentioning

confidence: 99%

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Efficiency of Different Heat Exchange Mechanisms for Ignition of Coal–Water Compositions

2019

Self Cite

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An optimal self-ignition of different fuels requires certain conditions according to the fuel properties. It is clear that the main factor is the surrounding temperature, but in fact, the chosen mechanism of heat transfer has a definitive influence on the ignition delay time. We have shown that ignition of the fuel composition containing 35−40 wt % water has very different dependencies of ignition delay versus temperature when radiative and convective heating are used. The estimation of a generalized activation energy of the ignition process at radiative heating shows that it is 3 times higher than that at convective heating. Together with this, the changes of the fuel composition up to 5 wt % do not change the activation energy more than 30%. The water evaporation decreases the efficiency of convective heat transfer and makes the growth of the furnace temperature almost useless for fuel ignition.

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Production and characterization of hybrid coal using sugar impurities extracted from pitch pine

Lee

Namkung

Park

et al. 2018

Applied Thermal Engineering

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Perspectives of the Use of Rapeseed Oil for the Doping of Waste-Based Industrial Fuel

Cited by 12 publications

References 12 publications

Ignition and Combustion Characteristics of Heptane-Based Nanofluid Fuel Droplets

Ignition and Combustion Characteristics of Heptane-Based Nanofluid Fuel Droplets

Efficiency of Different Heat Exchange Mechanisms for Ignition of Coal–Water Compositions

Production and characterization of hybrid coal using sugar impurities extracted from pitch pine

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