Startup of a reactive distillation process with a decanter [PDF]
, 2008 The startup of a reactive distillation process for the production of propyl acetate including a decanter is studied. A simulation model is presented which describes the whole startup from a cold and empty state and takes into account the liquid phase ...
Brehelin, Mathias +4 more
core +3 more sources
Dynamic modeling of three-phase upflow fixed-bed reactor including pore diffusion [PDF]
, 2002 The dynamics of a three-phase upflow fixed-bed reactor are investigated using a non-isothermal heterogeneous model including gas–liquid and liquid–solid mass transfer and diffusion/reaction phenomena inside the catalyst.
A.M Wilhelm +16 more
core +4 more sources
New patterns in high-speed granular flows
, 2014 We report on new patterns in high-speed flows of granular materials obtained by means of extensive numerical simulations. These patterns emerge from the destabilization of unidirectional flows upon increase of mass holdup and inclination angle, and are ...
Brodu, Nicolas +3 more
core +5 more sources
IEEE Access, 2017 This paper investigated the problem of overall gas holdup and the oxygen mass transfer in the internal loop airlift reactor by numerical modeling and experimental validation.
Shuo Zhang +3 more
doaj +1 more source
Multiphase Stirred Tank Bioreactors – New Geometrical Concepts and Scale‐up Approaches [PDF]
, 2019 Mainly with respect to biotechnological cases, current developments in the field of impeller geometries and findings for multistage configurations with a specific view on aerated stirred tanks are reviewed.
Bliatsiou, Chrysoula +3 more
core +1 more source
Computational fluid dynamics investigation of gas–liquid two-phase flow in aerated stirred reactors
Engineering Applications of Computational Fluid MechanicsAn extensive investigation of multiphase flow and mass transfer in aerated stirred reactors will provide methods for improving reactor performance. In this study, a computational fluid dynamics (CFD) model that characterizes gas–liquid two-phase flow in ...
Shaoqi Yu, Binxin Wu, Chun Wei
doaj +1 more source
Gas Holdup in Opaque Cellulose Fiber Slurries [PDF]
, 2005 Three different cellulose fiber types are used to study their effect on gas holdup and flow regime transition in a 10.2 cm semi-batch bubble column.
Heindel, Theodore +2 more
core +3 more sources
Computationally efficient stratified flow wet angle correlation for high resolution simulations [PDF]
, 2019 n high resolution two-phase pipe flow simulations, such as slug capturing simulation for liquid-gas pipe flow, explicit calculation of stratified flow wet angle has been proposed to improve computational speed of simulations.
Kara, Fuat, Oloruntoba, O
core +1 more source
PREDICTION OF GAS HOLD-UP IN A COMBINED LOOP AIR LIFT FLUIDIZED BED REACTOR USING NEWTONIAN AND NON-NEWTONIAN LIQUIDS [PDF]
, 2011 Many experiments have been conducted to study the hydrodynamic characteristics of column reactors and loop reactors. In this present work, a novel combined loop airlift fluidized bed reactor was developed to study the effect of superficial gas and liquid
Akilamudhan Palaniappan +3 more
core +1 more source
Simulation of Oxygen Mass Transfer in an Internal Loop Airlift Reactor with Axial Dispersion Model
Al-Khawarizmi Engineering Journal, 2011 The effect of superficial gas velocity within the range 0.01-0.164 m/s on gas holdup (overall, riser and down comer), volumetric oxygen mass transfer coefficient, liquid circulation velocity was studied in an internal loop concentric tubes airlift ...
Aseel Abd Al-Jabbar +2 more
doaj +2 more sources