Heat Transfer and Mass Transfer in the Plasma Fluidized Bed

2018 ◽  
pp. 71-79
Author(s):  
Changming Du ◽  
Rongliang Qiu ◽  
Jujun Ruan
Keyword(s):  
Heat Transfer ◽  
Mass Transfer ◽  
Fluidized Bed

scholarly journals Multistage Shelf Devices with Fluidized Bed for Heat-Mass Transfer Processes: Experimental Studies and Practical Implementation

2021 ◽  
Vol 11 (3) ◽  
pp. 1159
Author(s):  
Mykola Yukhymenko ◽  
Artem Artyukhov ◽  
Ruslan Ostroha ◽  
Nadiia Artyukhova ◽  
Jan Krmela ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Mass Transfer ◽  
Fluidized Bed ◽  
Heat Mass Transfer ◽  
Structural Parameters ◽  
Experimental Studies ◽  
Shelf Space ◽  
Interphase Heat Transfer ◽  
Transfer Processes ◽  
Mass Transfer Processes

The article deals with the theoretical description and experimental study of the hydrodynamic and heat transfer properties regarding the operation of multistage gravitational devices of the fluidized bed with inclined perforated shelves. The peculiarities of the work and the implementation field of the multistage shelf units are described. A theoretical model to define the solubilizer’s velocity above the perforation holes, in the above-shelf space of the device and in the outloading gap, as well as the residence time of the dispersed phase at the stage (perforated shelf contact) of the device is presented. The results of experimental studies regarding the influence, made by the structural parameters of the perforated shelf contacts, on the distribution pattern of single-phase and gas-dispersed flows in the workspace of the device, on the intensity of interphase heat transfer are presented. The conditions to create active hydrodynamic operating modes of multistage gravitational shelf devices, which provide higher efficiency of heat-mass transfer processes, and with lower gas consumption and hydraulic resistance compared to typical fluidized bed devices, are proved. Peculiarities regarding the implementation of heat-mass transfer processes in multistage devices are described using heat treatment and drying processes as examples.

Hybrid Modeling of Modified Mathematical Model for Gas Phase Olefine in Fluidized Bed Catalyst Reactors Using Artificial Neural Networks

2009 ◽  
Vol 4 (1) ◽  
Author(s):  
Ahmmed Saadi Ibrehem
Keyword(s):  
Heat Transfer ◽  
Experimental Data ◽  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Fluidized Bed ◽  
Hybrid Model ◽  
Operating Conditions ◽  
Transfer Coefficients ◽  
Mass And Heat Transfer ◽  
Artificial Neural

The complex flow patterns induced in fluidized bed catalytic reactors and the competing parameters affecting the mass and heat transfer characteristics makes the design of such reactors a challenging task to accomplish. The models of such a process rely heavily on predictive empirical correlations for mass and heat transfer coefficients. Unfortunately, published empirical based correlations have the common shortcoming of low-prediction efficiency compared with experimental data. In this work, an artificial neural network approach is used to capture the reactor characteristics in terms of heat and mass transfer based on published experimental data. The developed ANN-based heat and mass transfer coefficients relations were used in a conventional FCR model and simulated under industrial operating conditions. The hybrid model predictions of the melt-flow index and the emulsion temperature were compared to industrial measurements as well as published models. The predictive quality of the hybrid model was superior to other models. This modeling approach can be used as an alternative to conventional modeling methods.

THE ROLE OF SURFACE RESISTANCE IN FLUIDIZED BED HEAT TRANSFER

1994 ◽  
Author(s):  
Leon R. Glicksman ◽  
M. Hyre ◽  
M.C. Lints ◽  
N. Decker
Keyword(s):  
Heat Transfer ◽  
Fluidized Bed ◽  
Surface Resistance

RAPID HEAT TRANSFER MANIPULATION OF FINE POWDER BY USE OF A FLUIDIZED BED

1994 ◽  
Author(s):  
Shoichiro Fukusako ◽  
Masahiko Yamada ◽  
Akihiko Horibe ◽  
T. Ohmichi
Keyword(s):  
Heat Transfer ◽  
Fluidized Bed ◽  
Fine Powder
Sign in / Sign up

Export Citation Format

Share Document