Effect of pressure on the lean limit flames of H2-CH4-air mixture in tubes
Sign Up to like & getrecommendations! Published in 2017 at "Combustion and Flame"
DOI: 10.1016/j.combustflame.2017.05.011
Abstract: The lean limit flames of H2-CH4-air mixtures stabilized inside tubes in a downward flow are experimentally and numerically investigated at elevated pressures ranging from 2 to 5 bar. For the shapes of lean limit flames,… read more here.
Keywords: flames ch4; lean limit; limit; ch4 air ... See more keywords
Experimental and kinetic modelling investigation on NO, CO and NH3 emissions from NH3/CH4/air premixed flames
Sign Up to like & getrecommendations! Published in 2019 at "Fuel"
DOI: 10.1016/j.fuel.2019.115693
Abstract: Ammonia (NH3) is regarded as one of the most viable alternatives to produce carbon-free energy. However, its low flammability and high NOx emissions associated with its combustion inhibit the implementation of pure NH3 as a… read more here.
Keywords: nh3 ch4; nox emissions; nh3 emissions; fuel ... See more keywords
Effect of hydrogen addition on NOx formation in high-pressure counter-flow premixed CH4/air flames
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Hydrogen Energy"
DOI: 10.1016/j.ijhydene.2019.07.002
Abstract: Abstract A laboratory-scale laminar counterflow burner was used to investigate NO formation in high pressure premixed CH4/H2/air flames. New experimental results on NO measurements by LIF were obtained at high pressure in CH4/H2/air flames with… read more here.
Keywords: high pressure; formation; air flames; addition ... See more keywords
Chemical kinetic behaviors at the chain initiation stage of CH4/H2/air mixture.
Sign Up to like & getrecommendations! Published in 2021 at "Journal of hazardous materials"
DOI: 10.1016/j.jhazmat.2020.123680
Abstract: To intensively investigate chemical kinetic behaviors at the initial stage of CH4/H2/air mixture thoroughly, the density functional theory (CAMB3LYP/6-31 G) and a detailed mechanism (GRI-Mech3.0) were used to obtain kinetic and thermodynamic parameters. The reaction… read more here.
Keywords: explosion; chain; ch4 air; air mixture ... See more keywords
Large Eddy Simulation of Premixed CH4/Air Deflagration in a Duct with Obstacles at Different Heights
Sign Up to like & getrecommendations! Published in 2021 at "ACS Omega"
DOI: 10.1021/acsomega.1c03814
Abstract: In this work, the propagation of CH4/air deflagration flames in three semi-confined ducts with different obstacles was numerically investigated using large eddy simulation (LES). The shape of the premixed flame, flow field structure, and overpressure… read more here.
Keywords: large eddy; air deflagration; ch4 air; eddy simulation ... See more keywords
Influence of CO on Explosion Limits and Characteristics of the CH4/Air Mixture
Sign Up to like & getrecommendations! Published in 2022 at "ACS Omega"
DOI: 10.1021/acsomega.2c02774
Abstract: The study of gas explosion under the influence of CO generated by spontaneous combustion of coal has practical value for preventing and controlling such accidents. The explosion limit and the explosion characteristic parameters of the… read more here.
Keywords: air mixture; influence; mixture; ch4 air ... See more keywords
Simultaneous measurement of OH radical, H2O concentration, and temperature in a premixed CH4/air flame using TDLAS with an improved analysis method.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.466138
Abstract: The OH radical concentration was measured by applying tunable diode laser absorption spectroscopy, which is an in situ optical method. An optical absorption region (P7.5ff transition at 1502.7 nm) of the OH radical was selected… read more here.
Keywords: spectroscopy; ch4 air; concentration; premixed ch4 ... See more keywords
Reaction Mechanism Reduction for Ozone-Enhanced CH4/Air Combustion by a Combination of Directed Relation Graph with Error Propagation, Sensitivity Analysis and Quasi-Steady State Assumption
Sign Up to like & getrecommendations! Published in 2018 at "Energies"
DOI: 10.3390/en11061470
Abstract: In this study, an 18-steps, 22-species reduced global mechanism for ozone-enhanced CH4/air combustion processes was derived by coupling GRI-Mech 3.0 and a sub-mechanism for ozone decomposition. Three methods, namely, direct relation graphics with error propagation,… read more here.
Keywords: mechanism; ch4 air; ozone enhanced; global mechanism ... See more keywords
Combining Computational Screening and Machine Learning to Predict Metal–Organic Framework Adsorbents and Membranes for Removing CH4 or H2 from Air
Sign Up to like & getrecommendations! Published in 2022 at "Membranes"
DOI: 10.3390/membranes12090830
Abstract: Separating and capturing small amounts of CH4 or H2 from a mixture of gases, such as coal mine spent air, at a large scale remains a great challenge. We used large-scale computational screening and machine… read more here.
Keywords: screening machine; ch4 air; air; machine learning ... See more keywords