Chemical insights into ethyl acetate flames from experiment and kinetic modeling: Laminar burning velocity, speciation and NO$_x$ emission

Eckart, Sven; Shrestha, Krishna P.; Giri, Binod R.; Fang, Qilong; Chen, Chen; Li, Wei; Krause, Hartmut; Mauss, Fabian; Liu, Dong; Li, Yuyang

doi:10.1016/j.proci.2024.105487

Chemical insights into ethyl acetate flames from experiment and kinetic modeling: Laminar burning velocity, speciation and NO$$_x$$ emission

Journal Article · Thu Aug 01 00:00:00 EDT 2024 · Proceedings of the Combustion Institute

DOI:https://doi.org/10.1016/j.proci.2024.105487· OSTI ID:2426560

^[1]; ^[2]; ^[3]; ^[4]; Chen, Chen ^[5]; Li, Wei ^[4]; ^[6]; ^[4]; ^[5]; ^[4]

TU Bergakademie Freiberg (Germany); Shanghai Jiao Tong University (China)
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Brandenburg University of Technology, Cottbus (Germany)
Shanghai Jiao Tong University (China)
Nanjing University of Science and Technology (China)
TU Bergakademie Freiberg (Germany)

Oxygenated fuels, such as alcohols, ethers, and esters, are promising alternatives to conventional fuels. These fuels can help reduce detrimental emissions like carbon monoxide and unburned hydrocarbons and enhance octane ratings. Among these oxygenates, ethyl acetate (EA), a small alkyl ester sourced from biomass, emerges as a clean, promising energy carrier. It serves as a surrogate fuel to facilitate investigations into the combustion behaviours of biodiesel. Despite its importance, the literature knowledge of EA combustion characteristics is limited. Therefore, this study aims to broaden the knowledge of the combustion behaviour of this type of oxygenated fuel compound. In this study, we measured the laminar burning velocities of EA by employing a heat flux burner and a closed combustion vessel over the equivalence ratios of 0.7 – 1.7, pressures of 1 – 10 bar and temperatures ranging from 353 – 423 K. Further, we also measured the NOx emissions in exhaust gas of the premixed flames fueled by EA/air for the first time over the equivalence ratio of 0.8 – 1.2. Additionally, we employed a non-premixed counterflow flame setup for extensive characterisation of species and their concentration under diverse conditions encompassing various strain rates and oxygen concentrations. Finally, we utilized these newly measured data to construct and validate a detailed kinetic model developed as part of this work. The newly developed model will help characterize the combustion properties of EA.

View Accepted Manuscript (DOE)

Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: 89233218CNA000001

OSTI ID:: 2426560

Report Number(s):: LA-UR--24-26590

Journal Information:: Proceedings of the Combustion Institute, Journal Name: Proceedings of the Combustion Institute Journal Issue: 1-4 Vol. 40; ISSN 1540-7489

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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30 DIRECT ENERGY CONVERSION
Ethyl acetate (EA)
Kinetic modeling
Laminar burning velocity
NOx
Species concentration

Chemical insights into ethyl acetate flames from experiment and kinetic modeling: Laminar burning velocity, speciation and NO$$_x$$ emission

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References (28)

Figures / Tables (6)

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