Journal ArticleDOI
Experimental and Numerical Study on Laminar Flame Characteristics of Methane Oxy-fuel Mixtures Highly Diluted with CO2
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An experimental and numerical study on laminar flame characteristics of methane oxy-fuel mixtures highly diluted with CO2 was conducted using a constant volume chamber and CHEMKIN package as mentioned in this paper.Abstract:
An experimental and numerical study on laminar flame characteristics of methane oxy-fuel mixtures highly diluted with CO2 was conducted using a constant volume chamber and CHEMKIN package. The effects of high CO2 dilution on combustion chemical reaction, flame instability, and flame radiation of CH4/CO2/O2 mixtures were studied. The laminar burning velocities of CH4/CO2/O2 mixtures decrease with the increase of the CO2 fraction. CO2 directly participates in the chemical reaction through the elementary reaction OH + CO = H + CO2 and inhibits the combustion process by the competition of the H radical between the reverse reaction of OH + CO = H + CO2 and the reaction H + O2 = O + OH. This effect is more obvious for highly diluted CO2 in the case of CH4/CO2/O2 mixtures. CO2 suppresses the flame instability by the combined effect of hydrodynamic and thermal-diffusive instabilities. The radiation of CH4 oxy-fuel combustion is much stronger than that of CH4/air combustion mainly because of the existence of a lar...read more
Citations
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Journal ArticleDOI
Comprehensive kinetic study of combustion technologies for low environmental impact: MILD and OXY-fuel combustion of methane
Ghobad Bagheri,Ghobad Bagheri,Eliseo Ranzi,Matteo Pelucchi,Alessandro Parente,Alessio Frassoldati,Tiziano Faravelli +6 more
TL;DR: In this article, the CRECK core model is developed upon the Aramco 2.0 mechanism and further extended the validation objectives to MILD and OXY fuel combustion conditions.
Journal ArticleDOI
Comparative study on the effect of CO2 and H2O dilution on laminar burning characteristics of CO/H2/air mixtures
TL;DR: In this paper, the effect of CO2 and H2O dilution on the laminar burning characteristics of CO/H2/air mixtures was conducted at elevated pressures using spherically expanding flames and CHEMKIN package.
Journal ArticleDOI
A Critical Review of CO2 Capture Technologies and Prospects for Clean Power Generation
Najmus S. Sifat,Yousef Haseli +1 more
TL;DR: In this paper, the authors reviewed different methods and updates of the current technologies to capture and separate CO2 generated in a thermal power plant and classified them into two broad categories depending on the requirement of separation of CO2 from the gases.
Journal ArticleDOI
Influence of inert gas addition on propagation indices of methane-air deflagrations
TL;DR: In this article, the authors examined the characteristic indices of laminar deflagrations propagating in methane-air gaseous mixtures diluted by several inert gases: He, Ar, N2 or CO2.
Journal ArticleDOI
Measurements and interpretation of shock tube ignition delay times in highly CO2 diluted mixtures using multiple diagnostics
TL;DR: In this article, the effect of bifurcation has been examined in high-speed camera imagery in comparison with more standard methods (e.g., pressure, emission, and laser absorption spectroscopy) to measure the ignition delay time.
References
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Journal ArticleDOI
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Journal ArticleDOI
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