Numerical simulation of brown coal combustion in a 550 MW tangentially-fired furnace under different operating conditions

Al-Abbas, Audai Hussein; Naser, Jamal; Hussein, Emad Kamil

doi:10.1016/j.fuel.2012.11.054

Cited by 92 publications

(22 citation statements)

References 25 publications

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“…Numerical simulation is a powerful tool for understanding such phenomena in each furnace with a different design. Recently, numerical simulations of pulverized coal combustion field in large-scale furnaces have been conducted by various research groups [1][2][3][4][5][6][7][8][9]. For numerical simulations of pulverized coal combustion, simplified models are generally employed because of the limitation of computational resources.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis on effect of furnace scale on heat transfer mechanism of coal particles in pulverized coal combustion field

Hashimoto

Watanabe

2016

Fuel Processing Technology

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To investigate the effect of the furnace scale on the heat transfer mechanism of coal particles, numerical simulations of coal combustion fields in three different scale furnaces (915 MW th actual large scale boiler, 2.4 MW th and 0.76 MW th test furnaces) were conducted. High accuracy of simulation methods was validated with the measured data. From the comparison of numerical simulations between three different scale furnaces, it was clarified that the particle residence time with high particle temperature for a small scale furnace is shorter than that for a large scale furnace even if the particle residence time passing the high temperature gas is the same. This is caused by the insufficient heat gain of particles for a small scale furnace due to the lower radiation heat transfer because of the thinner flame thickness in the small furnace. The sphericity of ash particles from small scale furnaces is lower than that for large scale furnaces due to the shorter particle residence time with high particle temperature. These findings should be considered when the usability of coal brands for actual large scale boilers is evaluated by the fly ash properties from a small scale experimental furnace.

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Section: Introductionmentioning

confidence: 99%

Numerical analysis on effect of furnace scale on heat transfer mechanism of coal particles in pulverized coal combustion field

Hashimoto

Watanabe

2016

Fuel Processing Technology

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“…In recent study, researchers mainly focus on application of brown coal, blended multifuel combustion and the numerical prediction of oxyfuel combustion. Audai et al [19] developed a computational fluid dynamic modeling for the combustion characteristic of brown coal in a 550 WMe tangentially fired boiler under different operation scenarios on the basis of AVL Fire CFD code. Their work revealed the combustion characteristics of brown coal within 550 MWe boiler and the solution to optimize the operation.…”

Section: Introductionmentioning

confidence: 99%

Influence of vertical burner tilt angle on the gas temperature deviation in a 700 MW low NO x tangentially fired pulverised-coal boiler

Tian

Zhong

Tan

et al. 2015

Fuel Processing Technology

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“…However, good geological sites for CO2 storage must have: (i) appropriate thickness and porosity; (ii) the reservoir rock must be permeable and (iii) the cap-rock must be in a stable geological environment, as well as having a good sealing capability. Depleted or almost depleted oil and gas reservoirs, saline aquifers and un-mineable coal beds are the three major geological formations commonly considered for CO2 storage [164]. Storing CO2 in deep oceans is another option for CO2 storage; however, it poses environmental concerns, such as eutrophication and ocean acidification.…”

Section: Geological Storage Of Co2mentioning

confidence: 99%

The Potential of CO2 Capture and Storage Technology in South Africa’s Coal-Fired Thermal Power Plants

Yoro

Sekoai

2016

Environments

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Abstract:The global atmospheric concentration of anthropogenic gases, such as carbon dioxide, has increased substantially over the past few decades due to the high level of industrialization and urbanization that is occurring in developing countries, like South Africa. This has escalated the challenges of global warming. In South Africa, carbon capture and storage (CCS) from coal-fired power plants is attracting increasing attention as an alternative approach towards the mitigation of carbon dioxide emission. Therefore, innovative strategies and process optimization of CCS systems is essential in order to improve the process efficiency of this technology in South Africa. This review assesses the potential of CCS as an alternative approach to reducing the amount CO 2 emitted from the South African coal-fired power plants. It examines the various CCS processes that could be used for capturing the emitted CO 2 . Finally, it proposes the use of new adsorbents that could be incorporated towards the improvement of CCS technology.

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Numerical simulation of brown coal combustion in a 550 MW tangentially-fired furnace under different operating conditions

Cited by 92 publications

References 25 publications

Numerical analysis on effect of furnace scale on heat transfer mechanism of coal particles in pulverized coal combustion field

Numerical analysis on effect of furnace scale on heat transfer mechanism of coal particles in pulverized coal combustion field

Influence of vertical burner tilt angle on the gas temperature deviation in a 700 MW low NO x tangentially fired pulverised-coal boiler

The Potential of CO2 Capture and Storage Technology in South Africa’s Coal-Fired Thermal Power Plants

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