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Low temperature oxidation of n-hexane in a flow reactor

Mével, R. and Chatelain, K. and Boettcher, P. A. and Dayma, G. and Shepherd, J. E. (2014) Low temperature oxidation of n-hexane in a flow reactor. Fuel, 126 . pp. 282-293. ISSN 0016-2361. https://resolver.caltech.edu/CaltechAUTHORS:20140508-154023853

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Abstract

The risk of igniting a flammable mixture in fuel tank vapor space is a major concern in aviation safety. In order to analyze the hazards and develop mitigation strategies, it is necessary to characterize the explosive properties of kerosene vapor–air mixtures over wide ranges of initial conditions. n-Hexane has been extensively used in our laboratory as a single component surrogate of kerosene. In the present study, hexane oxidation by oxygen was studied in a flow reactor at equivalence ratios of 0.7, 1 and 1.5 for mixtures diluted at 90% with nitrogen. Residence time was set at 2 s and the pressure at 100 kPa. The evolution of the gas phase composition at the reactor exit was studied over the range 450–1000 K. Laser-based diagnostics and gas chromatography analysis were used to characterize the exit mixture composition. The chemical species measurements revealed three distinct regimes of oxidation, namely (i) the cool flame region from 600 to 650 K, (ii) the NTC region between 675 and 775 K, and (iii) the high temperature oxidation regime from 800 K. The modeling study demonstrated the capability of reproducing most of the trends observed experimentally.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1016/j.fuel.2014.02.072 DOIArticle
ORCID:
AuthorORCID
Mével, R.0000-0002-0032-350X
Shepherd, J. E.0000-0003-3181-9310
Additional Information:© 2014 Elsevier Ltd. Received 19 October 2013; Received in revised form 24 February 2014; Accepted 26 February 2014; Available online 12 March 2014. The present work was carried out in the Explosion Dynamics Laboratory of the California Institute of Technology and was supported by The Boeing Company through a Strategic Research and Development Relationship Agreement CT-BA-GTA-1 with Ivana Jojic as technical monitor.
Group:GALCIT
Funders:
Funding AgencyGrant Number
Boeing Company Strategic Research and Development RelationshipCT-BA-GTA-1
Subject Keywords:Flow reactor; Low temperature oxidation; Hexane; Laser-based diagnostics
Record Number:CaltechAUTHORS:20140508-154023853
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140508-154023853
Official Citation:R. Mével, K. Chatelain, P.A. Boettcher, G. Dayma, J.E. Shepherd, Low temperature oxidation of n-hexane in a flow reactor, Fuel, Volume 126, 15 June 2014, Pages 282-293, ISSN 0016-2361, http://dx.doi.org/10.1016/j.fuel.2014.02.072. (http://www.sciencedirect.com/science/article/pii/S0016236114002208)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:45617
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:09 May 2014 17:01
Last Modified:21 Aug 2020 21:28

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