Studies on Combustion Characteristics and Flame Length of Turbulent Oxy−Fuel Flames

Kim, Ho Keun; Kim, Yongmo; Lee, Sang Min; Ahn, Kook Young

doi:10.1021/ef060346g

Cited by 54 publications

(26 citation statements)

References 15 publications

(18 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…4). The oxy-fuel flame has been reported to show a higher intensity than the air-fuel flame [7], and indeed the flame images produced in the present study show that trend distinctively under the high combustion loads of 24 kW and 29 kW. Under a higher combustion load, the flame cohered just downstream of the burner, in the cases of oxy-fuel, and showed a faster flame propagation than that for the cases of air combustion.…”

Section: Flame and Temperature Fieldssupporting

confidence: 69%

Oxy-fuel combustion boiler for CO2 capturing: 50 kW-class model test and numerical simulation

2010

View full text Add to dashboard Cite

A novel oxy-fuel burner was devised and integrated into a 50 kW-class furnace-type boiler system. A series of experiments was conducted to verify its feasibility for industrial applications. Additionally, numerical simulations were performed and the results validated against experimental data on the detailed physics inside the conventional-design combustion chamber. The oxy-fuel burner, with the help of gas radiation, could effectively heat the combustion chamber. The composition of the exhaust gas revealed that the sealing of the system is crucial to the achievement of high CO 2 concentrations and low NOx emissions.

show abstract

Section: Flame and Temperature Fieldssupporting

confidence: 69%

Oxy-fuel combustion boiler for CO2 capturing: 50 kW-class model test and numerical simulation

2010

View full text Add to dashboard Cite

show abstract

“…They derived a simple correlation of the flame length and volume relative to the flow parameters for the high-temperature air combustion condition. Kim et al [22] proposed a modified correlation between dimensionless flame lengths and a flame Froude number to estimate L f for the two kinds of oxy-fuel combustors. Hu et al [23] measured flame length at a reduced atmospheric pressure for turbulent buoyant jet diffusion flames; it was reported that the normalized L f was longer in the lower pressure atmosphere.…”

Section: Introductionmentioning

confidence: 99%

An Investigation on Flame Shape and Size for a High-Pressure Turbulent Non-Premixed Swirl Combustion

et al. 2018

Energies

View full text Add to dashboard Cite

Flame shape and size for a high-pressure turbulent non-premixed swirl combustion were experimentally investigated over a wide range of varying parameters including fuel mass flow rate, combustor pressure, primary-air mass flow rate, and nozzle exit velocity. A CFD simulation was conducted to predict the flame profile. Meanwhile, a theoretical calculation was also performed to estimate flame length. It was observed that flame length increased linearly with increasing fuel mass flow rate but decreased with the increment of combustor pressure in the power function. The flame diminished at a larger primary-air mass flow rate but remained unaffected by the increasing nozzle exit velocity. Considering the global effect of all parameters at a particular pressure, the flame length generally decreased as the primary-air to fuel ratio increased. This was attributed to the reduced air entrainment required to dilute the fuel to stoichiometric proportions. The CFD simulation offered a good prediction of the variation trends of flame length, although some deviations from experimental values were observed. The theoretical calculation estimated the trends of flame length variation particularly well. Nevertheless the difference between the theoretical and experimental results was found to be due to the swirl influence. Hence, a swirl factor was proposed to be added to the original equation for swirl flames.

show abstract

“…Furthermore, the organization of combustion with exothermic oxidation of fuel takes place. The gaseous products of incomplete combustion go through a window in the upper end wall [11,12]. The disadvantage of the method is a high degree of underburning of the gaseous bulk residue introduced, the inability to use it in the production of silicate products (bricks, tiles, blocks), as well as the low heat content and heat of combustion of the gaseous combustion products withdrawn from the furnace, and the inability to use them effectively.…”

Section: Introductionmentioning

confidence: 99%

Method for processing coal-enrichment waste with solid and volatile fuel inclusions

Khasanova

Zhirgalova

Осинцев

2017

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

Abstract. The method relates to the field of industrial heat and power engineering. It can be used in coal preparation plants for processing coal waste. This new way is realized to produce a loose ash residue directed to the production of silicate products and fuel gas in rotary kilns. The proposed method is associated with industrial processing of brown coal beneficiation waste. Waste is obtained by flotation separation of rock particles up to 13 mm in size from coal particles. They have in their composition both solid and volatile fuel inclusions (components). Due to the high humidity and significant rock content, low heat of combustion, these wastes are not used on energy boilers, they are stored in dumps polluting the environment.

show abstract

Studies on Combustion Characteristics and Flame Length of Turbulent Oxy−Fuel Flames

Cited by 54 publications

References 15 publications

Oxy-fuel combustion boiler for CO2 capturing: 50 kW-class model test and numerical simulation

Oxy-fuel combustion boiler for CO2 capturing: 50 kW-class model test and numerical simulation

An Investigation on Flame Shape and Size for a High-Pressure Turbulent Non-Premixed Swirl Combustion

Method for processing coal-enrichment waste with solid and volatile fuel inclusions

Contact Info

Product

Resources

About