Laminar flame speeds of H2/CO mixtures: Effect of CO2 dilution, preheat temperature, and pressure

Jayaprakash, N.; Lieuwen, Timothy C.; Seitzman, Jerry M.

doi:10.1016/j.combustflame.2007.05.003

Cited by 389 publications

(156 citation statements)

References 25 publications

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“…Moreover, this mechanism includes reactions that are involved in the combustion of other hydrocarbon fuels, such as ethane and propane. In recent years, this mechanism has also been employed for CH 4 /H 2 /air [13] and H 2 /CO/air [14] flame simulations. Figure 2 shows laminar burning velocity values as a function of air ratio for two different gas streams -500 and 600 dm 3 /h and for both analysed syngas.…”

Section: Laminar Burning Velocity Simulationmentioning

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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Section: Laminar Burning Velocity Simulationmentioning

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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“…The researchers have mostly studied the combustion characteristics of syngas premixed flames since its invention [5][6][7][8][9][10]. Indeed, there is a lack of research and resources for syngas non-premixed flames.…”

Section: Introductionmentioning

confidence: 99%

The Control of Pollutant Emission from Syngas Flames Using the Oxidizer Dilution Approach

Darbandi¹,

Ghafourizadeh²,

Schneider³

2017

Proceedings of the 4th International Conference of Fluid Flow, Heat and Mass Transfer (FFHMT'17)

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-In this work, we aim to control the emission of greenhouse gases from different syngas-fuel-based flames or the bluff-body stabilized turbulent flame. First, we validate our numerical analysis by solving a benchmark test case using the detailed-chemistry and compare our obtained results with those of experiment. The benchmark test case is fed with a syngas fuel. The comparison shows that our numerical analysis can predict the structure of benchmark flame very well. Second, we simulate the test case with fuelling the same flame; however, fed with different syngas fuels. Then, we compare their achieved greenhouse gas emissions with each other. We feed the flame with different syngas fuels produced from biomass, wood waste, and turkey feathers. Considering these different syngas fuels, we extend the scope of this study and simulate these flames under different conditions of oxidizer dilution. In other words, we dilute the oxidizer by feeding extra nitrogen and report the greenhouse gases emitted from these flames. The comparison is performed to demonstrate the effect of extra nitrogen dilution on their pollution emissions. Our findings show that the dilution of oxidizer (by feeding extra nitrogen) will considerably affect the pollutants emission form these flames. The current study also shows that the emission of carbon monoxide CO would be seriously reduced using the extra nitrogen dilution technique.

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“…A more recent study investigating the laminar flame speeds of H 2 /CO mixtures included the effect of CO 2 dilution and increased preheat temperatures at lean conditions (Natarajan, Lieuwen et al 2007;Natarajan 2008;Natarajan, Kochar et al 2009). The laminar flame speeds of H 2 /CO/CO 2 /air flames were determined by the cylindrical tube method, in which the propagation rate of the flame through a cylindrical tube full of combustible as open on one end is measured.…”

Section: Airmentioning

confidence: 99%

Fuel Flexible Turbine System (FFTS) Program

None¹

2012

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Laminar flame speeds of H2/CO mixtures: Effect of CO2 dilution, preheat temperature, and pressure

Cited by 389 publications

References 25 publications

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

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

The Control of Pollutant Emission from Syngas Flames Using the Oxidizer Dilution Approach

Fuel Flexible Turbine System (FFTS) Program

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