Study on scale-up characteristics of oxy-fuel combustion in circulating fluidized bed boiler by 3D CFD simulation

2020 ◽  
Vol 31 (5) ◽  
pp. 2136-2151 ◽  
Author(s):  
Jinrao Gu ◽  
Qinwen Liu ◽  
Wenqi Zhong ◽  
Aibing Yu
Keyword(s):  
Fluidized Bed ◽  
Cfd Simulation ◽  
Circulating Fluidized Bed ◽  
Scale Up ◽  
Fuel Combustion ◽  
Circulating Fluidized Bed Boiler

Three-dimensional CFD simulation of oxy-fuel combustion in a circulating fluidized bed with warm flue gas recycle

Fuel ◽  
2018 ◽  
Vol 216 ◽  
pp. 596-611 ◽  
Author(s):  
Ying Wu ◽  
Daoyin Liu ◽  
Lunbo Duan ◽  
Jiliang Ma ◽  
Jie Xiong ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Flue Gas ◽  
Cfd Simulation ◽  
Circulating Fluidized Bed ◽  
Three Dimensional ◽  
Fuel Combustion

scholarly journals An Assessment of Drag Models in Eulerian–Eulerian CFD Simulation of Gas–Solid Flow Hydrodynamics in Circulating Fluidized Bed Riser

2020 ◽  
Vol 4 (2) ◽  
pp. 37 ◽  
Author(s):  
Mukesh Upadhyay ◽  
Ayeon Kim ◽  
Heehyang Kim ◽  
Dongjun Lim ◽  
Hankwon Lim
Keyword(s):  
Fluidized Bed ◽  
Cfd Simulation ◽  
Circulating Fluidized Bed ◽  
Model Simulation ◽  
Scale Up ◽  
Radial Profile ◽  
Momentum Exchange ◽  
Drag Model ◽  
Solid Holdup ◽  
Drag Models

Accurate prediction of the hydrodynamic profile is important for circulating fluidized bed (CFB) reactor design and scale-up. Multiphase computational fluid dynamics (CFD) simulation with interphase momentum exchange is key to accurately predict the gas-solid profile along the height of the riser. The present work deals with the assessment of six different drag model capability to accurately predict the riser section axial solid holdup distribution in bench scale circulating fluidized bed. The difference between six drag model predictions were validated against the experiment data. Two-dimensional geometry, transient solver and Eulerian–Eulerian multiphase models were used. Six drag model simulation predictions were discussed with respect to axial and radial profile. The comparison between CFD simulation and experimental data shows that the Syamlal-O’Brien, Gidaspow, Wen-Yu and Huilin-Gidaspow drag models were successfully able to predict the riser upper section solid holdup distribution with better accuracy, however unable to predict the solid holdup transition region. On the other hand, the Gibilaro model and Helland drag model were successfully able to predict the bottom dense region, but the upper section solid holdup distribution was overpredicted. The CFD simulation comparison of different drag model has clearly shown the limitation of the drag model to accurately predict overall axial heterogeneity with accuracy.

scholarly journals Numerical simulations of the industrial circulating fluidized bed boiler under air- and oxy-fuel combustion

2015 ◽  
Vol 87 ◽  
pp. 127-136 ◽  
Author(s):  
Wojciech P. Adamczyk ◽  
Paweł Kozołub ◽  
Adam Klimanek ◽  
Ryszard A. Białecki ◽  
Marek Andrzejczyk ◽  
...  
Keyword(s):  
Numerical Simulations ◽  
Fluidized Bed ◽  
Circulating Fluidized Bed ◽  
Fuel Combustion ◽  
Circulating Fluidized Bed Boiler

Modeling of solid fuel combustion in oxygen-enriched atmosphere in circulating fluidized bed boiler

2010 ◽  
Vol 91 (3) ◽  
pp. 364-368 ◽  
Author(s):  
Jaroslaw Krzywanski ◽  
Tomasz Czakiert ◽  
Waldemar Muskala ◽  
Robert Sekret ◽  
Wojciech Nowak
Keyword(s):  
Fluidized Bed ◽  
Solid Fuel ◽  
Circulating Fluidized Bed ◽  
Fuel Combustion ◽  
Circulating Fluidized Bed Boiler ◽  
Solid Fuel Combustion

Modeling of Solid Fuel Combustion in Furnaces with a Circulating Fluidized Bed

2008 ◽  
Vol 39 (1) ◽  
pp. 65-78
Author(s):  
Yu. S. Teplitskii ◽  
V. A. Borodulya ◽  
V. I. Kovenskii ◽  
E. P. Nogotov
Keyword(s):  
Fluidized Bed ◽  
Solid Fuel ◽  
Circulating Fluidized Bed ◽  
Fuel Combustion ◽  
Solid Fuel Combustion

The effect of circulating fluidized bed boiler load on the emission of mercury

2019 ◽  
Vol 92 (6) ◽  
pp. 1800-1806 ◽  
Author(s):  
Michał Wichliński ◽  
Grzegorz Wielgosz ◽  
Rafał Kobyłecki
Keyword(s):  
Fluidized Bed ◽  
Circulating Fluidized Bed ◽  
Circulating Fluidized Bed Boiler ◽  
Boiler Load
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