Results 11 to 20 of about 838 (262)

Prediction of minimum fluidization velocity in pulsed gas-solid fluidized bed [PDF]

Chemical Engineering Journal, 2020
Abstract: Fluidized bed technology plays a vital role in petrochemistry and coal separation. To enhance fluidization stability, the flow is periodically introduced into the gas-solid fluidized bed to form a pulsed gas-solid fluidized bed. As the main fluidization parameter, the minimum fluidization velocity (umf) can reflect the change of the critical ...
Yanjiao Li, Chenyang Zhou, Guannan Lv, Yongxin Ren, Yuemin Zhao, Qingxia Liu, Zhonghao Rao, Liang Dong   +7 more
openaire   +1 more source

A CFD Comparative Study of Bubbling Fluidized Bed Behavior with Thermal Effects Using the Open-Source Platforms MFiX and OpenFOAM

Fluids, 2021
This work studies the performance of two open-source CFD codes, OpenFOAM and MFiX, to address bubbling fluidized bed system at different temperature and heat transfer conditions.
Andrés Reyes-Urrutia, Cesar Venier, Néstor Javier Mariani, Norberto Nigro, Rosa Rodriguez, Germán Mazza   +5 more
doaj   +1 more source

FLUIDIZATION OF A BED OF SOLID PARTICLES IN A TWO DIMENSIONAL VERTICAL BOX

Spektra: Jurnal Fisika dan Aplikasinya, 2019
Simulation of fluidization of a bed of solid particles in a two-dimensional box is performed using molecular dynamics methods by assuming that superposition of buoyant, gravitational, viscous, collision force will make the particle to move in two ...
Aufa Numan Fadhilah Rudiawan, Kurnia Novita Sari, Hirofumi Notsu, Sparisoma Viridi   +3 more
doaj   +1 more source

Minimum fluidization velocity of inclined fluidized bed.

KAGAKU KOGAKU RONBUNSHU, 1989
流動層の圧力損失とガス速度との関係の測定により, 傾斜流動層の二つの流動化開始速度すなわち, 初期流動化開始速度および安定化後の流動化開始速度を求めた.さらに, これらの流動化開始速度および圧力損失を推定する式を, 流動層内の圧力バランスの考察により理論的および半実験的に求めた.
Yamazaki, Ryohei, Sugioka, Ryokichi, Ando, Osamu, Jimbo, Genji   +3 more
openaire   +2 more sources

Effect of the distributor plugging ways on fluidization quality and particle stratification in air dense medium fluidized bed

International Journal of Mining Science and Technology, 2020
Gas-solid fluidized bed separation is a highly efficient and clean technique for coal separation, and can effectively remove ash and sulfur contained gangue minerals from coal.
Zhonglin Gao, Xuesen Chai, Enhui Zhou, Ying Jia, Chenlong Duan, Ligang Tang   +5 more
doaj   +1 more source

Minimum Fluidization Velocity and Reduction Behavior of Combusted Iron Powder in a Fluidized Bed

SSRN Electronic Journal, 2022
The fluidization and reduction behavior of micron-sized iron oxide powder, produced by iron combustion, is studied in a lab-scale cylindrical fluidized bed. The minimum fluidization velocity umf is found to stabilize above normalized static bed heights of 0.5 H/D (static bed height divided by the bed diameter).
C.J.M. Hessels, D.W.J. Lelivelt, N.C. Stevens, Y. Tang, N.G. Deen, G. Finotello   +5 more
openaire   +2 more sources

Experimental Investigation of Minimum Fluidization Velocity and Pressure Drop in Fluidized Bed of Teff Grain [PDF]

Journal of Heat and Mass Transfer Research
Gas-fluidization characteristics of teff grain are crucial for understanding its behavior under gas flow, enabling it to act like a fluid, which is vital for pneumatic conveying systems.
Lemi Demissie Boset, Zewdu Abdi Debele, Amana Wako Koroso   +2 more
doaj   +1 more source

Simulation of Very Low Frequency Pulsed Fluidized Bed [PDF]

Journal of Applied Fluid Mechanics
Achieving high fluidization quality and bed stability is a paramount challenge in pulsed fluidized beds. 2D hydrodynamics models were studied using the Eulerian-Eulerian method with KTGF.
N. Abedi, M. Nasr Esfahany
doaj   +1 more source

Preliminary study for the suitability of eucalyptus chips and coal for combustion in a fluidized bed reactor

Pesquisa Florestal Brasileira, 2020
The combustion with fluidized bed reactors has as main advantages the best energy utilization of combustible materials and a lower generation of pollutants.
Angenor Geovani Auler, Matheus Vilares Mem de Sá, Paulo Eichler, Jaqueline Lidorio de Mattia, Guilherme Silva, Guilherme de Souza, Fernando Almeida Santos   +6 more
doaj   +1 more source

Experimental Analysis of the Fluidization Process of Binary Mixtures of Solids

KONA Powder and Particle Journal, 2014
The simultaneous treatment of dissimilar solids is encountered in a number of processes that exploit fluidization technology (granulation, combustion, pyrolysis, etc.), but a satisfactory description of ...
Brunello Formisani, Rossella Girimonte
doaj   +1 more source