Numerical investigation on post-combustion in a burner for heat treatment furnaces with a reducing gas atmosphere

Schmitz, Nico; Schwotzer, Christian; Pfeifer, Herbert; Wuenning, J G; Cresci, Enrico; Schneider, Josef

doi:10.1016/j.egypro.2017.07.159

Cited by 3 publications

(2 citation statements)

References 6 publications

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“…However, soaking at a temperature above 1273 K for 10 to 20 s accumulated Cr and Mn oxides into the scale. Schmitz et al [17] developed a burner that produced a reducing atmosphere in the furnace with a thermal efficiency comparable to state-of-the-art recuperative burners. The concept combined direct fuel-rich firing and indirect heating with radiant tubes in a recuperative burner.…”

Section: Resultsmentioning

confidence: 99%

Experimental Investigation of Air–Fuel Mixing Effects on Flame Characteristics in a Direct fired Burner

Lee¹,

Kim²,

Hong³

2021

Energies

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The length and pattern of air–fuel mixing plays a significant role in the uniformity, flame temperature, and emission characteristics, which can lead to a superior product quality in a non-oxidizing direct fired burner for a cold-rolled steel plate furnace. In this study, a diffusion-flame-type burner and partially-premixed-type burner were experimentally investigated to understand their effects on flame shape, flame temperature, and exhaust gas characteristics. With this aim, fuel nozzle size, nozzle hole number, fuel injection angle, and mixing distance of fuel and air were varied during the experiments. Computational fluid dynamics simulations were also performed to investigate the air–fuel mixing state for a nozzle-mixed burner and a partially-premixed burner. The results show that the flame temperature of the partially-premixed burner increases by up to 26 °C on average compared to that of the nozzle-mixed burner. It is also shown that the mixing distance plays an important role in the flame temperature of the partially-premixed burner. In addition, the residual oxygen concentration and volume ratio of CO/CO2 in the flue gas of the partially-premixed burner exhibit lower concentrations compared to those of the diffusion flame burner.

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Section: Resultsmentioning

confidence: 99%

Experimental Investigation of Air–Fuel Mixing Effects on Flame Characteristics in a Direct fired Burner

Lee¹,

Kim²,

Hong³

2021

Energies

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“…These atmospheres, however, emit compounds harmful to the environment such as carbon dioxide and oxides of nitrogen, aggravated when there is no complete burning of the gas. Thus, measures to control the composition of this atmosphere or even the use of inert gases are practices already applied for a more sustainable production (Stupnišek 2010;Schmitz et al 2017).…”

Section: Resultsmentioning

confidence: 99%

Sustainability in manufacturing processes: practices performed in metal forming, casting, heat treatment, welding and electrostatic painting

Nobrega

Pio

Fernandes

et al. 2019

International Journal of Sustainable Development & World Ec

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This article aims to list the main sustainable practices developed in the processes of metal forming, casting, heat treatment, welding and electrostatic painting. When analysed the literature about sustainable manufacturing, a predominance of studies about machining is observed and the processes mentioned are few explored in academic studies. The research strategy used to reach the objective was systematic literature review, conducted for each process cited. Many sustainable practices were identified with prominence of better materials use and energy efficiency. The authors of this article believe that the information presented here can be useful for researches in their future studies and for industry professionals interested in improving manufacturing processes.

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Industrial Flames

Baukal¹

2020

A Gallery of Combustion and Fire

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Numerical investigation on post-combustion in a burner for heat treatment furnaces with a reducing gas atmosphere

Cited by 3 publications

References 6 publications

Experimental Investigation of Air–Fuel Mixing Effects on Flame Characteristics in a Direct fired Burner

Experimental Investigation of Air–Fuel Mixing Effects on Flame Characteristics in a Direct fired Burner

Sustainability in manufacturing processes: practices performed in metal forming, casting, heat treatment, welding and electrostatic painting

Industrial Flames

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