Synergistic combustion of droplets of ethanol, diesel and biodiesel mixtures

M. L. Botero; Y. Huang; D. L. Zhu; A. Molina; C. K. Law

doi:10.1016/j.fuel.2011.10.049

Synergistic combustion of droplets of ethanol, diesel and biodiesel mixtures

M. L. Botero, Y. Huang, D. L. Zhu, A. Molina, C. K. Law

Research output: Contribution to journal › Article › peer-review

125 Scopus citations

Abstract

Freely-falling droplets of ethanol, diesel, (castor oil) biodiesel, and their mixtures were experimentally examined in a high-temperature combustion chamber. The combustion characteristics including the burning rate, microexplosion, and sooting propensity are reported. Results show that adding biodiesel to diesel significantly reduces the extent of soot formation and slightly reduces the burning rate. In addition, higher soot production of methyl stearate than castor oil biodiesel is observed suggesting strong oxidation propensity of the OH function group in castor oil biodiesel. Furthermore, by adding ethanol to diesel and biodiesel, microexplosion is observed, with the biodiesel/ethanol mixtures exhibiting stronger propensity, leading to significantly reduced gasification time and extent of soot formation. The burning of these mixtures occurs in a three-staged, liquid-phase diffusion-limited manner previously observed for distinct bi-component droplets with highly disparate volatilities.

Original language	English (US)
Pages (from-to)	342-347
Number of pages	6
Journal	Fuel
Volume	94
DOIs	https://doi.org/10.1016/j.fuel.2011.10.049
State	Published - Apr 2012

All Science Journal Classification (ASJC) codes

General Chemical Engineering
Fuel Technology
Energy Engineering and Power Technology
Organic Chemistry

Keywords

Castor oil biodiesel
Droplet combustion
Ethanol
Microexplosion
Soot formation

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10.1016/j.fuel.2011.10.049

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title = "Synergistic combustion of droplets of ethanol, diesel and biodiesel mixtures",

abstract = "Freely-falling droplets of ethanol, diesel, (castor oil) biodiesel, and their mixtures were experimentally examined in a high-temperature combustion chamber. The combustion characteristics including the burning rate, microexplosion, and sooting propensity are reported. Results show that adding biodiesel to diesel significantly reduces the extent of soot formation and slightly reduces the burning rate. In addition, higher soot production of methyl stearate than castor oil biodiesel is observed suggesting strong oxidation propensity of the OH function group in castor oil biodiesel. Furthermore, by adding ethanol to diesel and biodiesel, microexplosion is observed, with the biodiesel/ethanol mixtures exhibiting stronger propensity, leading to significantly reduced gasification time and extent of soot formation. The burning of these mixtures occurs in a three-staged, liquid-phase diffusion-limited manner previously observed for distinct bi-component droplets with highly disparate volatilities.",

keywords = "Castor oil biodiesel, Droplet combustion, Ethanol, Microexplosion, Soot formation",

author = "Botero, {M. L.} and Y. Huang and Zhu, {D. L.} and A. Molina and Law, {C. K.}",

note = "Funding Information: This work was supported by the Combustion Energy Frontier Research Center, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Basic Energy Sciences under Award Number DE-SC0001198. MLB was a visiting student at Princeton University, partially supported by the Young Scientist Research Grant from the Colombian Administration Department of Science Technology and Innovation. ",

year = "2012",

month = apr,

doi = "10.1016/j.fuel.2011.10.049",

language = "English (US)",

volume = "94",

pages = "342--347",

journal = "Fuel",

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T1 - Synergistic combustion of droplets of ethanol, diesel and biodiesel mixtures

AU - Botero, M. L.

AU - Huang, Y.

AU - Zhu, D. L.

AU - Molina, A.

AU - Law, C. K.

N1 - Funding Information: This work was supported by the Combustion Energy Frontier Research Center, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Basic Energy Sciences under Award Number DE-SC0001198. MLB was a visiting student at Princeton University, partially supported by the Young Scientist Research Grant from the Colombian Administration Department of Science Technology and Innovation.

PY - 2012/4

Y1 - 2012/4

N2 - Freely-falling droplets of ethanol, diesel, (castor oil) biodiesel, and their mixtures were experimentally examined in a high-temperature combustion chamber. The combustion characteristics including the burning rate, microexplosion, and sooting propensity are reported. Results show that adding biodiesel to diesel significantly reduces the extent of soot formation and slightly reduces the burning rate. In addition, higher soot production of methyl stearate than castor oil biodiesel is observed suggesting strong oxidation propensity of the OH function group in castor oil biodiesel. Furthermore, by adding ethanol to diesel and biodiesel, microexplosion is observed, with the biodiesel/ethanol mixtures exhibiting stronger propensity, leading to significantly reduced gasification time and extent of soot formation. The burning of these mixtures occurs in a three-staged, liquid-phase diffusion-limited manner previously observed for distinct bi-component droplets with highly disparate volatilities.

AB - Freely-falling droplets of ethanol, diesel, (castor oil) biodiesel, and their mixtures were experimentally examined in a high-temperature combustion chamber. The combustion characteristics including the burning rate, microexplosion, and sooting propensity are reported. Results show that adding biodiesel to diesel significantly reduces the extent of soot formation and slightly reduces the burning rate. In addition, higher soot production of methyl stearate than castor oil biodiesel is observed suggesting strong oxidation propensity of the OH function group in castor oil biodiesel. Furthermore, by adding ethanol to diesel and biodiesel, microexplosion is observed, with the biodiesel/ethanol mixtures exhibiting stronger propensity, leading to significantly reduced gasification time and extent of soot formation. The burning of these mixtures occurs in a three-staged, liquid-phase diffusion-limited manner previously observed for distinct bi-component droplets with highly disparate volatilities.

KW - Castor oil biodiesel

KW - Droplet combustion

KW - Ethanol

KW - Microexplosion

KW - Soot formation

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JO - Fuel

JF - Fuel

ER -

Synergistic combustion of droplets of ethanol, diesel and biodiesel mixtures

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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