Effect of H2/CO ratio and N2/CO2 dilution rate on laminar burning velocity of syngas investigated by direct measurement and simulation

Wang, Z. H.; Weng, Wubin; He, Yong; Li, Zhongshan; Cen, Kefa

doi:10.1016/j.fuel.2014.10.040

Cited by 79 publications

(79 citation statements)

References 33 publications

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“…It should be noted that the flame speed measured using the aforementioned equation is an averaged value of the entire flame surface which is different from the unstretched flame speed as this conical flame is affected by its strain and curvature effects. Fortunately, the difference between both values is found tiny and can be negligible in our experiments in regards the results present in Refs [9,30,32]. …”

Section: Extraction Of Flame Speedsupporting

confidence: 66%

“…A resume of literature reveals that various optical measurements methods have been proposed and used in the past in laminar flame speed measurements [9,[31][32][33]. These mainly include flame emission imaging techniques i.e.…”

Section: Experimental Facilitymentioning

confidence: 99%

“…Bunsen flame method is a convenient and widely used approach in laminar flame speed measurements because of its advantages of simplicity and well defined flame structure [9,30,[34][35][36]32]. Laminar flame speed is defined as the velocity at that a planar flame front travels relative to the unburned gas in direction normal to the flame surface [37].…”

Section: Extraction Of Flame Speedmentioning

confidence: 99%

“…It is also useful to validate new developed chemical kinetic mechanisms as well as turbulent combustion models [8][9][10][11]. Numerous previous studies have delivered significant insights into the effects of the addition of oxygenates on the laminar flame speeds of gasoline or diesel fuels [10,[12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

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Laminar flame speed of lignocellulosic biomass-derived oxygenates and blends of gasoline/oxygenates

Rossow

Modica

et al. 2017

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Section: Extraction Of Flame Speedsupporting

confidence: 66%

Section: Experimental Facilitymentioning

confidence: 99%

Section: Extraction Of Flame Speedmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Laminar flame speed of lignocellulosic biomass-derived oxygenates and blends of gasoline/oxygenates

Rossow

Modica

et al. 2017

Fuel

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“…Biomass gasification gas with content of H 2 , CO, CH 4 and N 2 , CO 2 , H 2 O (inert component) is considered to be important for further conversion of the energy and utilization [1]. Nevertheless, there is huge variety of the biomass materials with various parameters.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the possibility of the sewage sludge gasification gas use as a fuel

Werle

Dudziak

2016

Ecological Chemistry and Engineering S

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Abstract:Biomass is one of the major sources of energy that is estimated to contribute between 10% and 14% of the world's energy supply. Over the past several years, many societies have established policy targets to increase their production of renewable energy from biomass. The thermo-chemical utilization of biomass includes 4 technologies: the most popular combustion and co-firing, and unconventional: pyrolysis and gasification. Gasification is considered to be the perspective technology because has many advantages in comparison to traditional process of combustion: (1) limited emission of the SO2, NOx, oxides of the heavy metals and no risk of the dioxins and furans emission due to reducing atmosphere in the gasification reactor, (2) volume of the gasification gas is smaller in comparison to flue gases from combustion due to the reducing atmosphere, (3) gasification process produce gas which is potential gaseous fuel in power engineering (engines, gas turbines and boilers) and chemistry. Unfortunately, composition of the gasification gas is always described as a variable. Moreover, it depends on the conditions of the process and quality of the base fuel. For this reason, the use of gasification gas can't be very easy. For this reason, the knowledge of the basic properties of the gas is very important. Laminar burning velocity is assumed as an important quantity for in the process of the design equipment for the gas utilization. The numerical and experimental results of the laminar burning velocity of sewage sludge gasification gases were presented. Experimental Bunsen burner method was used. Cosilab 3 © software for numerical analysis was used. GRI-Mech 3.0 mechanism of gas oxidation was implemented. As a result of the work, the set of the parameters where the sewage sludge gasification gas combustion process is stable with effective heat release, were presented.

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Laminar flame speed measurement and combustion mechanism optimization for ethylene–air mixtures

Wang,

Hou,

Zhang

et al. 2024

Asia-Pacific J Chem Eng

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Ethylene plays a crucial role as an intermediate component in the cracking and combustion processes of large molecular alkane and olefins. In this article, the laminar flame speed of ethylene–air mixtures was measured using the heat flux method. The mechanism of ethylene was simplified by utilizing the error propagation directed relationship graph (DRGEP) and sensitivity analysis (SA), and the Arrhenius pre‐exponential factors for 20 selected reactions in the skeletal mechanism were optimized using the particle swarm optimization (PSO) algorithm. Finally, an ethylene optimization mechanism including 39 species and 85 reactions was obtained. The prediction results for flame speed, ignition delay time, and species concentration were compared with experimental data and other mechanisms, covering a wide range of temperatures (298–1725 K), pressures (1–22.8 atm), and equivalence ratios (0.5–2.0). The findings demonstrate that the optimization mechanism not only improves the prediction results of laminar flame speed in the rich combustion zone and low oxygen environment but also enhances the prediction accuracy of the ignition delay time at high pressure and in the lean combustion zone, as well as the prediction accuracy of C2H4 and H2O radicals. In conclusion, the optimized mechanism exhibits higher accuracy and broader applicability.

show abstract

Effect of H2/CO ratio and N2/CO2 dilution rate on laminar burning velocity of syngas investigated by direct measurement and simulation

Cited by 79 publications

References 33 publications

Laminar flame speed of lignocellulosic biomass-derived oxygenates and blends of gasoline/oxygenates

Laminar flame speed of lignocellulosic biomass-derived oxygenates and blends of gasoline/oxygenates

Evaluation of the possibility of the sewage sludge gasification gas use as a fuel

Laminar flame speed measurement and combustion mechanism optimization for ethylene–air mixtures

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