Results 11 to 20 of about 120,928 (230)

New Approaches for Prediction of Flow Regime Boundaries and Overall Gas Holdups in a Bubble Column Operated with Aqueous Solutions of 2-Pentanol

open access: yesJournal of Chemical Engineering of Japan
The 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   +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]

open access: yesScientific Reports
Synechococcus 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

Fluid Dynamic in Bubble Columns with Heat Exchanger Internals [PDF]

open access: yesEngineering and Technology Journal, 2014
The effects of vertical cooling internals on the gas hydrodynamics was studied in gas-liquid system (bubble columns) for column diameters, 15 and 30 cm in the absence and presence of internals (the % occluded area by internals 5, 10, and 20%).
Burhan Sadeq Abdulrazzaq
doaj   +1 more source

Gas Holdup Distribution in a Coaxial Mixer Containing Yield-Pseudoplastic Fluids: Effect of Biopolymer Concentration

open access: yesEngineering Proceedings, 2023
The performance of gas-liquid mixing processes in agitated vessels is commonly measured by the degree of gas dispersion, and local measurements of this parameter can provide a more accurate description of the mixing, especially for non-Newtonian fluids ...
Paloma L. Barros   +2 more
doaj   +1 more source

A Hydrodynamic Study in a Sieve Plate Sectionalized Bubble Column [PDF]

open access: yesEngineering and Technology Journal, 2011
The sectionalization of conventional bubble columns to tray bubble column by perforated trays has been used in chemical, biochemical, and petroleum processes as an effective way to improve the gas-liquid contacting efficiency, and reduce liquid ...
Burhan Sadeq Abdulrazzaq
doaj   +1 more source

Prediction of Small Bubble Holdups in Bubble Columns Operated with Various Organic Liquids at Both Ambient and Elevated Pressures and Temperatures

open access: yesFluids, 2023
This article focuses on the prediction of the small bubble holdups (assuming the existence of two major bubble classes) in two bubble columns (0.289 m in ID and 0.102 m in ID), operated with organic liquids under various conditions (including high ...
Stoyan Nedeltchev
doaj   +1 more source

Investigation of the Gas-Liquid Flow in an Agitated Vessel Equipped with an ASI Impeller by Using Tomography Method [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2020
In this study, the hydrodynamics of the gas dispersion in an aerated vessel equipped with a newly designed impeller (ASI impeller), a combination of the pitched blade turbine and the Scaba impeller was investigated.
Fariba Khalili   +3 more
doaj   +1 more source

GAS HOLDUP AND FLOW REGIME IN A BUBBLE COLUMN THAT INCLUDES ENHANCED OIL RECOVERY CHEMICALS

open access: yes, 2021
Chemical enhanced oil recovery (EOR) methods are alternatives to increase oil production in mature reservoirs. However, the presence of EOR chemicals in the produced water may impact the separation of gas-water systems in oil platforms.
A. Orlando   +4 more
semanticscholar   +1 more source

Hydrodynamics of a self-agitated draft tube airlift reactor [PDF]

open access: yesChemical 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
doaj   +1 more source

Hydrodynamics and Mass Transfer in a Concentric Internal Jet-Loop Airlift Bioreactor Equipped with a Deflector

open access: yesEnergies, 2021
The gas–liquid hydrodynamics and mass transfer were studied in a concentric tube internal jet-loop airlift reactor with a conical bottom. Comparing with a standard design, the gas separator was equipped with an adjustable deflector placed above the riser.
Radek Šulc, Jan Dymák
doaj   +1 more source

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