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http://dx.doi.org/10.7464/ksct.2020.26.3.204

Analysis on Ignition Characteristics According to the Chemical Composition of Bio Jet Fuel Synthesized by F-T Process  

Kang, Saetbyeol (Agency for Defense Development)
Publication Information
Clean Technology / v.26, no.3, 2020 , pp. 204-210 More about this Journal
Abstract
In this study, the ignition characteristics of bio jet fuel (Bio-7629, Bio-5172) produced by F-T process and petroleum-based jet fuel (Jet A-1) were compared and analyzed. The ignition delay time of each fuel was measured by means of a combustion research unit (CRU) and the results were explained through an analysis of the properties and composition of the fuel. The ignition delay time of Bio-5172 was the shortest while that of Jet A-1 was the longest because Jet A-1 had the highest surface tension and Bio-5172 had the lowest viscosity in terms of fuel properties that could affect the physical ignition delay time. As a result of the analysis of the constituents' type and ratio, 22.8% aromatic compounds in Jet A-1 could generate benzyl radical, which had low reactivity during the oxidation reaction, affecting the increase of ignition delay time. Both Bio-7629 and Bio-5172 were composed of paraffin only, with the ratio of n-/iso- being 0.06 and 0.80, respectively. The lower the degree of branching is in paraffin, the faster the isomerization of peroxy radical is produced during oxidation, which could determine the propagation rate of the ignition. Therefore, Bio-5172, composed of more n-paraffin, possesses shorter ignition delay time compared with Bio-7629.
Keywords
F-T process; bio jet fuel; petroleum-based jet fuel; ignition characteristic; paraffin;
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Times Cited By KSCI : 2  (Citation Analysis)
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