A Mathematical Model for Heavy Fuel Droplet Vaporization and Pyrolysis in a High Temperature Inert Gas

Baert, Rsg Rik

doi:10.1080/00102209308907607

Cited by 29 publications

(37 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the liquid phase, polymerization results in a decrease of the number of monomers from the fuel, but only the aromatic part of the monomers combines and produces polymers. This polymerization rate depends exponentially on temperature and is independent of molecular weight [6]. During the liquid phase pyrolysis, polymer formation occurs continuously, but at the same time the non-aromatic part of the polymer undergoes further cracking due to high liquid temperature.…”

Section: The Tendency To Polymerization Increases With Aromaticitymentioning

confidence: 99%

“…A complete description of the chemical structure of molecules present in a heavy fuel oil is impossible due to the large range of molecular weight, but it can be described by different group contribution methods as mentioned by Baert [6].…”

Section: Heavy Fuel Oilmentioning

confidence: 99%

“…Moreover, this polymerization rate shows dependence C127 on temperature and aromaticity (AR). Hence, the combined rate of volatile gas production by thermal cracking of liquid and cracking of the polymer for a single fraction is given by Baert [6] as…”

Section: The Tendency To Polymerization Increases With Aromaticitymentioning

confidence: 99%

“…These radicals can either decompose further or recombine through polymerization. Therefore, these reactions convert the higher molecules into low molecular weight gases and high molecular weight coke residue [6]. The following pyrolysis model is used in the present study.…”

Section: Liquid Phasementioning

confidence: 99%

“…The second figure represents continuation of the molecular weight distribution beyond 500 to 1500 kg/kmol, representing the residue. The distribution parameters are chosen such they cover the range of molecular weight suggested by Baert [6].…”

Section: Heavy Fuel Oilmentioning

confidence: 99%

See 4 more Smart Citations

Vaporization and pyrolysis modelling of a single droplet of heavy fuel oil using continuous thermodynamics

Garaniya¹,

Goldsworthy²

2007

ANZIAMJ

View full text Add to dashboard Cite

This article presents modelling of vaporization and pyrolysis of a single droplet of heavy fuel oil in a high ambient temperature field using the principle of continuous thermodynamics. Continuous thermodynamics reduces the computational simulation load compared with discrete thermodynamics, without compromising the quality of prediction of the complex combustion behaviours of such multicomponent complex fuels. Heavy fuel oil is represented by four fuel fractions and each of these fractions is assigned a separate distribution function. The prediction shows that in the modelling of heavy fuel oil, both heating rate and composition are very important parameters in coke formation. Coke formation can lead to engine degradation and increased exhaust smoke. The developed model shows good agreement with experimental results obtained by other researchers.

show abstract

Section: The Tendency To Polymerization Increases With Aromaticitymentioning

confidence: 99%

Section: Heavy Fuel Oilmentioning

confidence: 99%

Section: The Tendency To Polymerization Increases With Aromaticitymentioning

confidence: 99%

Section: Liquid Phasementioning

confidence: 99%

Section: Heavy Fuel Oilmentioning

confidence: 99%

See 3 more Smart Citations

Vaporization and pyrolysis modelling of a single droplet of heavy fuel oil using continuous thermodynamics

Garaniya¹,

Goldsworthy²

2007

ANZIAMJ

View full text Add to dashboard Cite

show abstract

Viscoelastic and light scattering studies on thermally induced sol to gel phase transition in fish myosin solutions

et al. 2003

View full text Add to dashboard Cite

show abstract

Evaporation of biomass fast pyrolysis oil: Evaluation of char formation

Ramachandran

Rossum

Swaaij

et al. 2009

Env Prog and Sustain Energy

View full text Add to dashboard Cite

Evaporation experiments of biomass fast pyrolysis oil and its aqueous fractions at low (TGA-108C/min, Glass tube-1008C/min) and high (atomization $10 6 8C/min) heating rates are performed. Slow heating of pyrolysis oil produced $28% char (on carbon basis), whereas atomization of oil droplets ($117 lm) produced $9% char in the temperature range of 500-8508C. Aqueous fractions and glucose solutions also produced less amount of char by evaporating at higher heating rates ($3% char) when compared with slower heating ($24% char). The results obtained show that not a single lumped components class in pyrolysis oil can be identified that is primarily responsible for the char formation. At low heating rate, higher concentrations of organics in the bioliquids result in higher char yields, which reveals that a certain fraction in the oil produce char with a reaction order higher than one (polymerization reactions). The measured trends in char yield can be described by a model in which certain fraction of oil is converted by two parallel reactions to char and gas/vapor.

show abstract

A Mathematical Model for Heavy Fuel Droplet Vaporization and Pyrolysis in a High Temperature Inert Gas

Cited by 29 publications

References 44 publications

Vaporization and pyrolysis modelling of a single droplet of heavy fuel oil using continuous thermodynamics

Vaporization and pyrolysis modelling of a single droplet of heavy fuel oil using continuous thermodynamics

Viscoelastic and light scattering studies on thermally induced sol to gel phase transition in fish myosin solutions

Evaporation of biomass fast pyrolysis oil: Evaluation of char formation

Contact Info

Product

Resources

About