An experimental study of the effects of asphaltenes on heavy fuel oil droplet combustion

Villaseñor, R.; García, Felipe Legorreta

doi:10.1016/s0016-2361(99)00010-1

Cited by 40 publications

(33 citation statements)

References 20 publications

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“…161 The formation of carbonaceous PM during residual oil combustion is related to the asphaltene content of the fuel. 162,163 When the residual oil is burned more efficiently under conditions typical of a utility boiler, the carbon content is lower and the PM is almost entirely in the ultrafine (condensation) mode. 164 The transition metals in residual oil combustion ash are in the form of sulfates rather than sulfides or oxides.…”

Section: Residual Oil Fly Ashmentioning

confidence: 99%

Combustion Aerosols: Factors Governing Their Size and Composition and Implications to Human Health

Lighty

Veranth

Sarofim

2000

Journal of the Air & Waste Management Association

1,005

600

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Particulate matter (PM) emissions from stationary combustion sources burning coal, fuel oil, biomass, and waste, and PM from internal combustion (IC) engines burning gasoline and diesel, are a significant source of primary particles smaller than 2.5 µm (PM 2.5 ) in urban areas. Combustion-generated particles are generally smaller than geologically produced dust and have unique chemical composition and morphology. The fundamental processes affecting formation of combustion PM and the emission characteristics of important applications are reviewed. Particles containing transition metals, ultrafine particles, and soot are emphasized because these types of particles have been studied extensively, and their emissions are controlled by the fuel composition and the oxidant-temperature-mixing history from the flame to the stack. There is a need for better integration of the combustion, air pollution control, atmospheric chemistry, and inhalation health research communities. Epidemiology has demonstrated that susceptible individuals are being harmed by ambient PM. Particle surface area, number of ultrafine particles, bioavailable transition metals, polycyclic aromatic hydrocarbons (PAH), and other particle-bound organic compounds are suspected to be more important than particle mass in determining the effects of air pollution. Time-and size-resolved PM measurements are needed for testing mechanistic toxicological hypotheses, for characterizing the relationship between combustion operating conditions and transient emissions, and for source apportionment studies to develop air quality plans. Citations are provided to more specialized reviews, and the concluding comments make suggestions for further research.

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Section: Residual Oil Fly Ashmentioning

confidence: 99%

Combustion Aerosols: Factors Governing Their Size and Composition and Implications to Human Health

Lighty

Veranth

Sarofim

2000

Journal of the Air & Waste Management Association

1,005

600

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“…Thus, the problems with the heaviest constituents in the oil, the asphaltenes, are getting worse. These compounds cause problems during oil production, transportation, and refining as well as during the combustion of heavy fuel oils (1,2).…”

Section: Introductionmentioning

confidence: 99%

Flocculation Behavior of Asphaltenes in Solvent/Nonsolvent Systems

Östlund

Löfroth

Holmberg

et al. 2002

Journal of Colloid and Interface Science

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“…They also found that the asphaltene content of the fuel influenced both the sizes of the droplets and the resulting cenospheres due to its influence on the viscosity of the fuel [29]. Villasenor et al studied the effects of asphaltenes on HFO droplet combustion and found that while coke formation is not only dependent on asphaltene content of the fuel, high asphaltene content increases the burnout time for created cenospheres [30].…”

Section: Resultsmentioning

confidence: 99%

A New Approach for Modeling Coke Particle Emissions from Large Diesel Engines Using Heavy Fuel Oil

Hentelä

Kaario

Garaniya

et al. 2017

SAE Technical Paper Series

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In the present study, a new approach for modelling emissions of coke particles or cenospheres from large diesel engines using HFO (Heavy fuel oil) was studied. The model used is based on a multicomponent droplet mass transfer and properties model that uses a continuous thermodynamics approach to model the complex composition of the HFO fuel and the resulting evaporation behavior of the fuel droplets. Cenospheres are modelled as the residue left in the fuel droplets towards the end of the simulation. The mass-transfer and fuel properties models were implemented into a cylinder section model based on the Wärtsilä W20 engine in the CFD-code Star CD v.4.24. Different submodels and corresponding parameters were tuned to match experimental data of cylinder pressures available from Wärtsilä for the studied cases. The results obtained from the present model were compared to experimental results found in the literature. The performance of the model was found to be promising although conclusive validation of the model would require more detailed experimental results about cenosphere emissions from the specific case studied here. According to the results obtained from this model the emissions of cenospheres are a function of both operating conditions and fuel properties. While the droplet evaporation and properties models were used in this study to model cenosphere emissions, the approach could also be used to study the combustion behavior of HFO in a broader sense.

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An experimental study of the effects of asphaltenes on heavy fuel oil droplet combustion

Cited by 40 publications

References 20 publications

Combustion Aerosols: Factors Governing Their Size and Composition and Implications to Human Health

Combustion Aerosols: Factors Governing Their Size and Composition and Implications to Human Health

Flocculation Behavior of Asphaltenes in Solvent/Nonsolvent Systems

A New Approach for Modeling Coke Particle Emissions from Large Diesel Engines Using Heavy Fuel Oil

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