Numerical simulations on Oxy-MILD combustion of pulverized coal in an industrial boiler

2018 ◽  
Vol 181 ◽  
pp. 361-374 ◽  
Author(s):  
Diego Perrone ◽  
Teresa Castiglione ◽  
Adam Klimanek ◽  
Pietropaolo Morrone ◽  
Mario Amelio
2015 ◽  
Vol 138 ◽  
pp. 252-262 ◽  
Author(s):  
Yaojie Tu ◽  
Hao Liu ◽  
Kai Su ◽  
Sheng Chen ◽  
Zhaohui Liu ◽  
...  

2009 ◽  
Vol 27 (0) ◽  
pp. 144-156 ◽  
Author(s):  
Ryoichi Kurose ◽  
Hiroaki Watanabe ◽  
Hisao Makino

2010 ◽  
Vol 91 (1) ◽  
pp. 88-96 ◽  
Author(s):  
Qingyan Fang ◽  
Huajian Wang ◽  
Yan Wei ◽  
Lin Lei ◽  
Xuelong Duan ◽  
...  

2017 ◽  
Vol 21 (3) ◽  
pp. 1463-1477 ◽  
Author(s):  
Rastko Jovanovic ◽  
Krzysztof Strug ◽  
Bartosz Swiatkowski ◽  
Sławomir Kakietek ◽  
Krzysztof Jagiełło ◽  
...  

Oxy-fuel coal combustion, together with carbon capture and storage or utilization, is a set of technologies allowing to burn coal without emitting globe warming CO2. As it is expected that oxy-fuel combustion may be used for a retrofit of existing boilers, development of a novel oxy-burners is very important step. It is expected that these burners will be able to sustain stable flame in oxy-fuel conditions, but also, for start-up and emergency reasons, in conventional, air conditions. The most cost effective way of achieving dual-mode boilers is to introduce dual-mode burners. Numerical simulations allow investigation of new designs and technologies at a relatively low cost, but for the results to be trustworthy they need to be validated. This paper proposes a workflow for design, modeling, and validation of dual-mode burners by combining experimental investigation and numerical simulations. Experiments are performed with semi-industrial scale burners in 0.5 MWt test facility for flame investigation. Novel CFD model based on ANSYS FLUENT solver, with special consideration of coal combustion process, especially regarding devolatilization, ignition, gaseous and surface reactions, NOx formation, and radiation was suggested. The main model feature is its ability to simulate pulverized coal combustion under different combusting atmospheres, and thus is suitable for both air and oxy-fuel combustion simulations. Using the proposed methodology two designs of pulverized coal burners have been investigated both experimentally and numerically giving consistent results. The improved burner design proved to be a more flexible device, achieving stable ignition and combustion during both combustion regimes: conventional in air and oxy-fuel in a mixture of O2 and CO2 (representing dry recycled flue gas with high CO2 content). The proposed framework is expected to be of use for further improvement of multi-mode pulverized fuel swirl burners but can be also used for independent designs evaluation.


2014 ◽  
Vol 28 (9) ◽  
pp. 6046-6057 ◽  
Author(s):  
Manabendra Saha ◽  
Bassam B. Dally ◽  
Paul R. Medwell ◽  
Emmet M. Cleary

Energy ◽  
2020 ◽  
Vol 198 ◽  
pp. 117376 ◽  
Author(s):  
Yucheng Kuang ◽  
Boshu He ◽  
Wenxiao Tong ◽  
Chaojun Wang ◽  
Zhaoping Ying

2015 ◽  
Vol 95 (4) ◽  
pp. 803-829 ◽  
Author(s):  
Z. Mei ◽  
P. Li ◽  
J. Mi ◽  
F. Wang ◽  
J. Zhang

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