New Approaches for Prediction of Flow Regime Boundaries and Overall Gas Holdups in a Bubble Column Operated with Aqueous Solutions of 2-Pentanol [PDF]
Journal of Chemical Engineering of JapanThe article reports a new approach for flow regime (FR) identification and a modified correlation for gas holdup prediction in a bubble column (BC) (0.1 m inner diameter) operated with aqueous solutions of 2-pentanol at ambient conditions.
Stoyan Nedeltchev +3 more
doaj +3 more sources
International Journal of Multiphase Flow, 2022 A limited number of studies are available in literature on the small bubbles which create from gas-very high viscosity oils interaction and its contribution to the gas holdup in the system. The rate of small bubble formation has an important impact on heat and mass transfer in many chemical and industrial processes.
Shara K. Mohammed +3 more
openaire +3 more sources
CFD SIMULATION OF BUBBLE COLUMN REACTOR BY INVESTIGATING THE EFFECT OF TRAYS ON OVERALL GAS HOLDUP
The Nucleus, 2020 In the current research work, CFD model has been developed to estimate overall gas holdup for co-current air-water system in a Trayed Bubble Column Reactor (TBCR), operating in bubbly flow regime. The TBCR considered in this study has 19 cm inner diameter and 274 cm length.
Arif Khan +4 more
openaire +3 more sources
Hydrodynamics of a self-agitated draft tube airlift reactor [PDF]
Chemical Industry and Chemical Engineering Quarterly, 2014 The main hydrodynamic characteristics of a novel-constructed, self-agitated draft tube airlift reactor (DT-ALR) were investigated. Ten impellers, driven only by the means of gas throughput and induced liquid circulation, were inserted in the ...
Tekić Miodrag N. +6 more
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Investigation of Local and Overall Volumetric Mass Transfer Coefficient and Gas Holdup in Aerated Coaxial Mixing Systems Containing Non-Newtonian Fluids through Tomography and Computational Fluid Dynamics [PDF]
<p>Gas dispersion in Newtonian and non-Newtonian fluids is one of the most important processes in biochemical industries. Aerated mixing tanks are preferred due to their superior performance in increasing the contact area and mass transfer between two phases.
Maryam Jamshidzadeh
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Modelling and optimization of an existing onshore gas gathering network using PIPESIM [PDF]
HeliyonPakistan has limited natural gas reserves, and most are found onshore. This article reports on the problems of an onshore gas gathering network (GGN) analysed through steady-state simulation modelling using PIPESIM software.
Iftikhar Ahmed +6 more
doaj +2 more sources
Comprehensive Analysis of the Overall Gas Holdup Profiles in Various Air-Water Bubble Columns
Journal of Chemical Engineering of JapanBubble columns (BCs) are widely used gas-liquid contactors in the chemical industry. Their hydrodynamic and mass transfer performance depends on the prevailing flow regime (FR) and the gas sparger (GS) type (particularly in the homogeneous FR).
Stoyan Nedeltchev +7 more
doaj +2 more sources
Effect of hydrodynamics and mass transfer processes on biomass production of Synechococcus HS-9 cultivated using rectangular airlift photobioreactors with baffles [PDF]
Scientific ReportsSynechococcus HS-9 is being recognized as one of the potential strains for biodiesel production due to its high levels of fatty acid methyl ester (FAME), which are around 70–78%.
Arif Rahman +10 more
doaj +2 more sources
South African Journal of Chemical Engineering, 2021 Three designs of static spargers were used in a pilot scale external loop airlift reactor to determine their effects on the gas holdup and mass transfer characteristics for an air-water system.
N. Naidoo, W.J. Pauck, M. Carsky
doaj +1 more source