Experimental and Numerical Study of Hydrodynamics with Heat Transfer in a Gas−Solid Fluidized-Bed Reactor at Different Particle Sizes

2009 ◽  
Vol 48 (6) ◽  
pp. 3177-3186 ◽  
Author(s):  
Mahdi Hamzehei ◽  
Hassan Rahimzadeh
Keyword(s):  
Heat Transfer ◽  
Fluidized Bed ◽  
Numerical Study ◽  
Fluidized Bed Reactor ◽  
Particle Sizes

scholarly journals Numerical study of mixing and heat transfer of SRF particles in a bubbling fluidized bed

2019 ◽  
Vol 142 (2) ◽  
pp. 1087-1096
Author(s):  
Mohamed Sobhi Alagha ◽  
Botond Szucs ◽  
Pal Szentannai
Keyword(s):  
Heat Transfer ◽  
Experimental Data ◽  
Fluidized Bed ◽  
Present Model ◽  
Numerical Study ◽  
Sand Particle ◽  
Particle Sizes ◽  
Proposed Model ◽  
Bubbling Fluidized Bed ◽  
Good Agreement

AbstractIn this article, numerical investigations on mixing and heat transfer of solid refused fuel (SRF) particles in a bubbling fluidized bed are carried out. The numerical model is based on the Eulerian–Eulerian approach with empirical submodels representing gas–solid and solid–solid interactions. The model is verified by experimental data from the literature. The experimental data include SRF vertical distribution in SRF–sand mixtures of different sand particle sizes ($$d_{\mathrm{pm}} = 654,810$$ d pm = 654 , 810 and 1110 $$\upmu$$ μ m) at different fluidization velocities ($$u/u_{\mathrm{mf}} = 1.2$$ u / u mf = 1.2 –2.0). We proposed magnification of drag force exerted by the gas on SRF particles based on Haider and Levenspiel (Powder Technol 58(1):63–70, 1989) drag coefficient. The proposed model shows good agreement with the experimental data at high fluidization velocities ( $$u/u_{\mathrm{mf}} = 1.5$$ u / u mf = 1.5 –2.0) and poor predictions at low fluidization velocities ($$u/u_{\mathrm{mf}} = 1.2$$ u / u mf = 1.2 –1.5). Heat transfer results showed that the present model is valid and gives good agreement with the experimental data of wall–bed heat transfer coefficient.

A numerical study on gas-to-particle and particle-to-particle heat transfer in a conical fluidized bed reactor

2020 ◽  
Vol 34 (6) ◽  
pp. 2391-2402
Author(s):  
Mohamed Y. Hashim ◽  
Hamada M. Abdelmotalib ◽  
Jong Seok Kim ◽  
Dong Guk Ko ◽  
Ik-Tae Im
Keyword(s):  
Heat Transfer ◽  
Fluidized Bed ◽  
Numerical Study ◽  
Fluidized Bed Reactor ◽  
Conical Fluidized Bed

CO2 methanation in a bench-scale bubbling fluidized bed reactor using Ni-based catalyst and its exothermic heat transfer analysis

Energy ◽  
2021 ◽  
Vol 214 ◽  
pp. 118895
Author(s):  
Hyungseok Nam ◽  
Jung Hwan Kim ◽  
Hana Kim ◽  
Min Jae Kim ◽  
Sang-Goo Jeon ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Fluidized Bed ◽  
Fluidized Bed Reactor ◽  
Heat Transfer Analysis ◽  
Co2 Methanation ◽  
Bench Scale ◽  
Bubbling Fluidized Bed

scholarly journals Heat transfer and fluid flow analysis of a fluidized bed reactor for beam-down optics

2019 ◽  
Author(s):  
Selvan Bellan ◽  
Tatsuya Kodama ◽  
Koji Matsubara ◽  
Nobuyuki Gokon ◽  
Hyun Seok Cho
Keyword(s):  
Heat Transfer ◽  
Fluid Flow ◽  
Fluidized Bed ◽  
Flow Analysis ◽  
Fluidized Bed Reactor ◽  
Fluid Flow Analysis
Sign in / Sign up

Export Citation Format

Share Document