Experimental investigation of partially premixed methane–air and methane–oxygen flames stabilized over a perforated-plate burner

Rashwan, Sherif S.; Ibrahim, Asmaa; Abou-Arab, T.W.; Nemitallah, Medhat A.

doi:10.1016/j.apenergy.2016.02.047

Cited by 62 publications

(39 citation statements)

References 26 publications

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“…Akbari et al [8] numerically investigated the flammability limit and flame stability of porous burners. Rashwan et al [9] made experimental investigations of partially premixed methane flames on the flammability limits, flame length, appearance and color. Additionally, extensive researches on risk issues of energy conversion and application have been conducted, since safety principles are fundamental guidelines for the utilization of the energy [4,[10][11][12][13].…”

Section: Year Million Tonnes Oil Equivalentmentioning

confidence: 99%

“…As a consequence, studies on the flame characteristics resulted from the pipeline leakage were conducted for both the normal atmospheric pressure [2] and the reduced pressure [3], in which the flame height correlations for different atmospheric pressures were proposed. Since gaseous fuels have been used to provide energy in many fields, its combustion as well as flame characteristics during the energy utilization and transportation have been studied extensively [4][5][6][7][8][9]. Zhang et al [4] proposed a mathematical model for flame volume estimation.…”

Section: Introductionmentioning

confidence: 99%

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Experimental study on flame morphologic characteristics of wall attached non-premixed buoyancy driven turbulent flames

Zhang

Delichatsios

et al. 2019

Applied Energy

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This work investigates the effects of the wall on the morphologic characteristics of non-premixed buoyancy driven turbulent flames attached to the wall. Experiments are carried out with rectangular burners having their long side attached to a wall. The investigation is based on dimensional analysis and comprehensive experimental data, including comparison of the flame characteristics of the wall attached flames with free flames. Results show that the non-dimensional flame heights of wall attached flames experience a two-dimensional to three-dimensional transition as free flames do. The critical dimensionless heat release rate for this transition is smaller for the wall attached flames (0.30) than that of the free flames (0.39). The flame height fluctuation of wall attached flames is smaller than that of free flames and decreases with an increase in the nozzle aspect ratio. The ratio of flame thickness (or flame width) to flame height of wall attached flames is smaller than that of free flames. New correlations for flame height, width and thickness of the wall attached flames are proposed based on the mirror-approach of the rectangular source relative to that of a free flame, where the burner perimeter is found to be an appropriate length scale. This work provides important knowledge on the effect of wall on flame characteristics of buoyancy driven buoyant turbulent flames, which is essential to the design and risk assessment of the laying of gaseous fuel transportation pipelines in the city and also provides data for validation of computational fluid dynamics (CFD) models.

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Section: Year Million Tonnes Oil Equivalentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental study on flame morphologic characteristics of wall attached non-premixed buoyancy driven turbulent flames

Zhang

Delichatsios

et al. 2019

Applied Energy

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“…Stability limits of air and oxy‐combustion flames over a range of equivalence ratio . [Colour figure can be viewed at wileyonlinelibrary.com]…”

Section: Oxy‐fuel Combustion In Conventional Combustion Systemsmentioning

confidence: 99%

Oxy-fuel combustion technology: current status, applications, and trends

Nemitallah

Habib

Badr

et al. 2017

Int. J. Energy Res.

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109

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Summary The increased level of emissions of carbon dioxide into the atmosphere due to burning of fossil fuels represents one of the main barriers toward the reduction of greenhouse gases and the control of global warming. In the last decades, the use of renewable and clean sources of energies such as solar and wind energies has been increased extensively. However, due to the tremendously increasing world energy demand, fossil fuels would continue in use for decades which necessitates the integration of carbon capture technologies (CCTs) in power plants. These technologies include oxycombustion, pre‐combustion, and post‐combustion carbon capture. Oxycombustion technology is one of the most promising carbon capture technologies as it can be applied with slight modifications to existing power plants or to new power plants. In this technology, fuel is burned using an oxidizer mixture of pure oxygen plus recycled exhaust gases (consists mainly of CO2). The oxycombustion process results in highly CO2‐concentrated exhaust gases, which facilitates the capture process of CO2 after H2O condensation. The captured CO2 can be used for industrial applications or can be sequestrated. The current work reviews the current status of oxycombustion technology and its applications in existing conventional combustion systems (including gas turbines and boilers) and novel oxygen transport reactors (OTRs). The review starts with an introduction to the available CCTs with emphasis on their different applications and limitations of use, followed by a review on oxycombustion applications in different combustion systems utilizing gaseous, liquid, and coal fuels. The current status and technology readiness level of oxycombustion technology is discussed. The novel application of oxycombustion technology in OTRs is analyzed in some details. The analyses of OTRs include oxygen permeation technique, fabrication of oxygen transport membranes (OTMs), calculation of oxygen permeation flux, and coupling between oxygen separation and oxycombustion of fuel within the same unit called OTR. The oxycombustion process inside OTR is analyzed considering coal and gaseous fuels. The future trends of oxycombustion technology are itemized and discussed in details in the present study including: (i) ITMs for syngas production; (ii) combustion utilizing liquid fuels in OTRs; (iii) oxy‐combustion integrated power plants and (iv) third generation technologies for CO2 capture. Techno‐economic analysis of oxycombustion integrated systems is also discussed trying to assess the future prospects of this technology. Copyright © 2017 John Wiley & Sons, Ltd.

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“…Numerous other researches also reinforced these observations. 66,78,[87][88][89][90] Temperature profiles were found to be matched in CH 4 /air and CH 4 / 36%O 2 /64%CO 2 flames, according to Song et al 66 Comparable values were reported in the literature. 59,63,91,92 Rashwan et al 93 reported similar findings; an oxygen fraction of 29% to 40% is needed for stable oxy-combustion with FGR.…”

Section: Premixed Oxy-fuel Combustionmentioning

confidence: 83%

Frontiers in combustion techniques and burner designs for emissions control and CO₂capture: A review

et al. 2019

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Summary The use of fossil fuel is expected to increase significantly by midcentury because of the large rise in the world energy demand despite the effective integration of renewable energies in the energy production sector. This increase, alongside with the development of stricter emission regulations, forced the manufacturers of combustion systems, especially gas turbines, to develop novel combustion techniques for the control of NOx and CO2 emissions, the latter being a greenhouse gas responsible for more than 60% to the global warming problem. The present review addresses different burner designs and combustion techniques for clean power production in gas turbines. Combustion and emission characteristics, flame instabilities, and solution techniques are presented, such as lean premixed air‐fuel (LPM) and premixed oxy‐fuel combustion techniques, and the combustor performance is compared for both cases. The fuel flexibility approach is also reviewed, as one of the combustion techniques for controlling emissions and reducing flame instabilities, focusing on the hydrogen‐enrichment and the integrated fuel‐flexible premixed oxy‐combustion approaches. State‐of‐the‐art burner designs for gas turbine combustion applications are reviewed in this study, including stagnation point reverse flow (SPRF) burner, dry low NOx (DLN) and dry low‐emission (DLE) burners, EnVironmental burners (including EV, AEV, and SEV burners), perforated plate (PP) burner, and micromixer (MM) burner. Special emphasis is made on the MM combustor technology, as one of the most recent advances in gas turbines for stable premixed flame operation with wide turndown and effective control of NOx emissions. Since the generation of pure oxygen is prerequisite to oxy‐combustion, oxygen‐separation membranes became of immense importance either for air separation for clean oxy‐combustion applications or for conversion/splitting of the effluent CO2 into useful chemical and energy products. The different carbon‐capture technologies, along with the most recent carbon‐utilization approaches towards CO2 emissions control, are also reviewed.

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Experimental investigation of partially premixed methane–air and methane–oxygen flames stabilized over a perforated-plate burner

Cited by 62 publications

References 26 publications

Experimental study on flame morphologic characteristics of wall attached non-premixed buoyancy driven turbulent flames

Experimental study on flame morphologic characteristics of wall attached non-premixed buoyancy driven turbulent flames

Oxy-fuel combustion technology: current status, applications, and trends

Frontiers in combustion techniques and burner designs for emissions control and CO₂capture: A review

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Experimental investigation of partially premixed methane–air and methane–oxygen flames stabilized over a perforated-plate burner

Cited by 62 publications

References 26 publications

Experimental study on flame morphologic characteristics of wall attached non-premixed buoyancy driven turbulent flames

Experimental study on flame morphologic characteristics of wall attached non-premixed buoyancy driven turbulent flames

Oxy-fuel combustion technology: current status, applications, and trends

Frontiers in combustion techniques and burner designs for emissions control and CO2capture: A review

Contact Info

Product

Resources

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Frontiers in combustion techniques and burner designs for emissions control and CO₂capture: A review