Simulation on the Combustion Property of Blast-Furnace Gas Engine by GT-POWER

Liu, Yongqi; Wang, Xiao Yan; Zhu, Guangfei; Liu, Rui Xiang; Gao, Zhen

doi:10.4028/www.scientific.net/amr.156-157.965

Cited by 4 publications

(3 citation statements)

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“…In more recent works Lawton [7] reviews the historic use of BFG in this manner, with the primary issues resulting from the large volumes of low quality of gas available with respect to the relatively small capacity of engines to date. Application in this way is becoming more financially viable however, with manufacturers offering alternative fuel specifications [8], and consequently more applied work is being performed such as 'Simulation on the combustion Property of Blast Furnace Gas Engine by GT-POWER' [9]. Whilst gas engines have the advantage of being able to use relatively dirty fuels; manufacturers would still require an in-situ fuel characterisation survey detailing fluctuations in fuel quality and potential contaminants.…”

Section: Applied Uses Of Blast Furnace Gasmentioning

confidence: 99%

Thermal distributive blast furnace gas characterisation, a steelworks case study

Pugh

Giles

Hopkins

et al. 2013

Applied Thermal Engineering

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Section: Applied Uses Of Blast Furnace Gasmentioning

confidence: 99%

Thermal distributive blast furnace gas characterisation, a steelworks case study

Pugh

Giles

Hopkins

et al. 2013

Applied Thermal Engineering

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“…In particular, computational fluid dynamics (CFD) simulations combined with experimental trials performed at the laboratory or industrial scale allow steel producers to test multiple working conditions and combinations with respect to their previous implementations in industrial processes [18,19]. A few studies have been published regarding the simulation of BFG in combustion equipment such as boilers or combustion engines [20,21]. However, they are limited to theoretical analysis and the results are not verified with experimental analysis.…”

Section: Introductionmentioning

confidence: 99%

CFD Modeling and Validation of Blast Furnace Gas/Natural Gas Mixture Combustion in an Experimental Industrial Furnace

2023

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The use of residual gases from steel production processes as fuel for steel treatment furnaces has attracted great interest as a method for reducing fossil fuel consumption and the steel footprint. However, these gases often have a low calorific value, and a direct substitution can lead to low temperatures or combustion instability issues. CFD simulations of the combustion of these gases can help steel producers forecast the results of the substitution before real testing and implementation. In this study, a CFD model of an industrial experimental furnace in the steel sector is developed and validated. The results are calculated using the combustion, radiation, and heat transfer models included in the software Ansys Fluent. The validation of the simulated results is performed with data acquired from experimental tests under the same simulated conditions at three air-to-fuel equivalence ratios, which vary from an excess of 0% to an excess of 5% oxygen at the outlet. The model is adjusted to the results, capturing the trends of the measured physical variables and pollutant concentrations. In the case of the combustion temperature, the differences between the simulated and measured values vary from 0.03% to 6.9. Based on the simulation results, the use of blast furnace gas as fuel produces temperatures inside the chamber between 1004 °C and 1075 °C and high stream velocities because of the high flow needed to keep the power constant. Flames exhibit straight movements since the high flows absorb the effect of the swirling flames. The addition of natural gases increases the combustion temperature up to 1211 °C and reduces the flow and length of the flames. Finally, temperatures up to 1298 °C and shorter flames are reached with natural gas enriched with a stream of oxygen, but in this case, NOx emissions need to be controlled.

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“…This is something that can potentially act to dissuade engineers from usage in more complex technologies, leading to more research in this area. [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Laminar flame speed and markstein length characterisation of steelworks gas blends

et al. 2014

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2014. Laminar flame speed and markstein length characterisation of steelworks gas blends. Applied Energy 136 , pp.ABSTRACT An outwardly propagating spherical flame configuration has been used to characterise the combustion of different blended steelworks gas compositions, under atmospheric ambient conditions. A nonlinear extrapolative technique was used to obtain values of laminar burning velocity and Markstein length for combustion with air and change in equivalence ratio. Peak burning velocity was shown to reach almost 1 m·s -1 for the combustion of coke oven gas under marginally rich conditions, and the influence of flame stretch on burning velocity also shown to increase with equivalence ratio. The molar fraction of coke oven gas was then blended in the range 0-15% with four blast furnace gas mixtures containing 1-7% H 2 fractions, representative of the inherent compositional fluctuation experienced in production. Profiles for change in burning velocity resulting from this addition of COG are presented, and the dampening extent of fluctuation resulting from the H 2 variation has been quantified. Results are also presented for the relative change in gross calorific value and corresponding Wobbe index of the variable blended gases across the tested limits. Modelled results were generated using the PREMIX coded CHEMKIN-PRO, and the performance of specified chemical reaction mechanisms evaluated relative to the experimental data.

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Simulation on the Combustion Property of Blast-Furnace Gas Engine by GT-POWER

Cited by 4 publications

References 0 publications

Thermal distributive blast furnace gas characterisation, a steelworks case study

Thermal distributive blast furnace gas characterisation, a steelworks case study

CFD Modeling and Validation of Blast Furnace Gas/Natural Gas Mixture Combustion in an Experimental Industrial Furnace

Laminar flame speed and markstein length characterisation of steelworks gas blends

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