Chemical Flame Length of a Methane Jet into Oxidant Stream

Mei, Zi; Mi, Jianchun; Wang, Fan; Li, Peijun; Zhang, J.

doi:10.1007/s10494-015-9598-0

Cited by 22 publications

(39 citation statements)

References 37 publications

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“…As shown in Figure 13, the results of the CFD model have good agreement with the results of ref (14) and the average error is less than 5%. The flame lengths of the numerical model have nearly identical changing trend compared with the experimental results obtained by Kim et al 12 This suggests that the numerical model may be suitable for the CH 4 /O 2 combustor in this work.…”

Section: Validationsupporting

confidence: 78%

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Computational Fluid Dynamics Modeling of Combustion Characteristics of a CH₄/O₂ Combustor in a Copper Anode Furnace

et al. 2019

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With the rapid depletion of high-yield copper mineral resources and the accumulation of secondary copper resources, the recycling of secondary copper is gaining popularity in the copper industry. A copper anode furnace, often used in copper recycling, usually relies on methane combustion to melt copper scraps. In this work, a computational fluid dynamics (CFD) model of pure oxy-methane combustion is established to investigate the combustion characteristics of the CH 4 /O 2 combustor in the copper anode furnace. The model is validated by comparing the simulation results with experimental measurements. The effects on flame length and temperature distribution are investigated under various fuel velocities, oxidizer velocities, and oxidizer temperatures. The results indicate that flame length and temperature distribution increase as the fuel velocity and oxidizer temperature increase, and decrease with the increase in oxidizer velocity. The flame length and temperature distribution always show an increasing trend with the increasing equivalence ratio. Based on the recycling capacity of the copper anode furnace, this validated CFD model can be used to optimize the operation parameters for controlling flame length and temperature distribution.

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Section: Validationsupporting

confidence: 78%

“…The same geometry described in ref (14) was used to validate the feasibility of the numerical model mentioned above. The flame lengths obtained in this simulation were compared with the flame lengths obtained in ref (14) by CFD modeling and obtained in ref (12) through experimental means. The comparison diagram is shown in Figure 13.…”

Section: Validationmentioning

confidence: 99%

Computational Fluid Dynamics Modeling of Combustion Characteristics of a CH₄/O₂ Combustor in a Copper Anode Furnace

et al. 2019

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“…22−24 Without BB, the mixture jet will directly flow downstream and be gradually diluted and heated by entraining the surrounding exhaust gas with low oxygen, finally establishing MC. 8,15−17…”

Section: Introductionmentioning

confidence: 99%

“…To differentiate MC and CC in the flame establishment, combustion characteristics, and pollution emissions clearly, a number of previous investigations have been carried out experimentally ,− and numerically ,− since the discovery of MC. Wünning et al defined MC as a low NO x emission technology by experiment.…”

Section: Introductionmentioning

confidence: 99%

“…They also used this method to identify MC and TC in the JHC burner of Dally et al based on the coflow temperature ( T C ) and oxygen mole fraction ( X O 2 ,C ). Mei et al , investigated the reaction zone dimensions of MC and TC in the same JHC burner by varying T C , X O 2 ,C , coflow velocity ( V C ), and coflow diluent (N 2 and CO 2 ). They pointed out that MC is characterized by a large reaction zone and weak chemical reactions and the oxy-fuel (CO 2 -diluted) reaction zone is much larger than the air-fuel (N 2 -diluted) counterpart.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of MILD Combustion of a Premixed CH₄/Air Jet Flame versus Its Conventional Counterpart

Wang

2019

ACS Omega

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This study is performed to characterize moderate or intense low-oxygen dilution (MILD) combustion (MC) versus conventional combustion (CC) of a premixed CH4/air jet flame in a hot coflow under identical inlet and ambient conditions. The present CC and MC correspond to the cases using a bluff-body (BB) and a no bluff-body (NBB), respectively. It is demonstrated that the NBB combustion develops by entraining ambient hot low-oxygen gas so as to dilute the reactant mixture and simultaneously heat up beyond the minimum autoignition temperature (Tai), leading to the MC. By contrast, in the BB case, the conventional flame is established and stabilized by a steady heat source of the recirculation zone (RZ) behind the BB with highly intense mixing and rapid ignition. A large reaction zone with uniform temperature distribution (i.e., low temperature rise) is found in the MC mode, while the CC has a much smaller size of the intense reaction zone with the concentrated high temperature and species distributions. Significantly, it has been first revealed that, in the BB case, there is a secondary combustion in the MC mode formed far downstream from the BB flame under the environmental condition of a high-temperature hot coflow.

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Bluff-Body Mild Combustion of a Premixed CH4/Air Jet in Hot Coflow

Liu,

Wang,

et al. 2024

Environmental Science and Engineering

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Chemical Flame Length of a Methane Jet into Oxidant Stream

Cited by 22 publications

References 37 publications

Computational Fluid Dynamics Modeling of Combustion Characteristics of a CH₄/O₂ Combustor in a Copper Anode Furnace

Computational Fluid Dynamics Modeling of Combustion Characteristics of a CH₄/O₂ Combustor in a Copper Anode Furnace

Characterization of MILD Combustion of a Premixed CH₄/Air Jet Flame versus Its Conventional Counterpart

Bluff-Body Mild Combustion of a Premixed CH4/Air Jet in Hot Coflow

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Chemical Flame Length of a Methane Jet into Oxidant Stream

Cited by 22 publications

References 37 publications

Computational Fluid Dynamics Modeling of Combustion Characteristics of a CH4/O2 Combustor in a Copper Anode Furnace

Computational Fluid Dynamics Modeling of Combustion Characteristics of a CH4/O2 Combustor in a Copper Anode Furnace

Characterization of MILD Combustion of a Premixed CH4/Air Jet Flame versus Its Conventional Counterpart

Bluff-Body Mild Combustion of a Premixed CH4/Air Jet in Hot Coflow

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Product

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Computational Fluid Dynamics Modeling of Combustion Characteristics of a CH₄/O₂ Combustor in a Copper Anode Furnace

Computational Fluid Dynamics Modeling of Combustion Characteristics of a CH₄/O₂ Combustor in a Copper Anode Furnace

Characterization of MILD Combustion of a Premixed CH₄/Air Jet Flame versus Its Conventional Counterpart