Hydrodynamics of co-current downward liquid-liquid system with packing

2022 ◽  
Vol 39 (1) ◽  
pp. 86-95
Author(s):  
Swaminathan Samdavid ◽  
Thiruvengadam Renganathan ◽  
Kamatam Krishnaiah
Keyword(s):  
Liquid System

Thermocapillary Flow in an Annular Two-Layer Liquid System

2016 ◽  
Vol 3 (1) ◽  
pp. 33-38
Author(s):  
Zhong Zeng ◽  
◽  
Haiqiong Xie ◽  
Liangqi Zhang ◽  
Yuui Yokota ◽  
...  
Keyword(s):  
Liquid System ◽  
Thermocapillary Flow

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

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4329
Author(s):  
Radek Šulc ◽  
Jan Dymák
Keyword(s):  
Mass Transfer ◽  
Transfer Coefficient ◽  
Mass Transfer Coefficient ◽  
Liquid System ◽  
Gas Holdup ◽  
Gas Velocity ◽  
Liquid Phase Mass Transfer ◽  
Homogenization Time ◽  
Standard Design ◽  
Superficial Gas Velocity

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. The effect of riser superficial gas velocity uSGR on the total gas holdup εGT, homogenization time tH, and overall volumetric liquid-phase mass transfer coefficient kLa was investigated in a laboratory bioreactor, of 300 mm in inner diameter, in a two-phase air–water system and three-phase air–water–PVC–particle system with the volumetric solid fraction of 1% for various deflector clearances. The airlift was operated in the range of riser superficial gas velocity from 0.011 to 0.045 m/s. For the gas–liquid system, when reducing the deflector clearance, the total gas holdup decreased, the homogenization time increased twice compared to the highest deflector clearance tested, and the overall volumetric mass transfer coefficient slightly increased by 10–17%. The presence of a solid phase shortened the homogenization time, especially for lower uSGR and deflector clearance, and reduced the mass transfer coefficient by 15–35%. Compared to the gas–liquid system, the noticeable effect of deflector clearance was found for the kLa coefficient, which was found approx. 20–29% higher for the lowest tested deflector clearance.

Application of a two-liquid system to sitting-drop vapour-diffusion protein crystallization

2002 ◽  
Vol 59 (1) ◽  
pp. 194-196 ◽  
Author(s):  
Hiroaki Adachi ◽  
Kazufumi Takano ◽  
Masaaki Morikawa ◽  
Shigenori Kanaya ◽  
Masashi Yoshimura ◽  
...  
Keyword(s):  
Protein Crystallization ◽  
Liquid System ◽  
Vapour Diffusion

scholarly journals Low temperature magnetic phase diagram of the cubic non-Fermi liquid system CeIn $\mathsf{_{3-x}}$Sn$\mathsf{_x}$

2004 ◽  
Vol 38 (3) ◽  
pp. 445-450 ◽  
Author(s):  
P. Pedrazzini ◽  
M. Gómez Berisso ◽  
N. Caroca-Canales ◽  
M. Deppe ◽  
C. Geibel ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Low Temperature ◽  
Fermi Liquid ◽  
Magnetic Phase ◽  
Magnetic Phase Diagram ◽  
Liquid System

The Use of High Energies Radiations to Characterise Solid-Liquid Systems

2005 ◽  
Vol 498-499 ◽  
pp. 49-54 ◽  
Author(s):  
Fábio de Oliveira Arouca ◽  
João Jorge Ribeiro Damasceno
Keyword(s):  
Gamma Rays ◽  
Constitutive Equations ◽  
Liquid System ◽  
Local Concentration ◽  
High Energies ◽  
Transient Regimes ◽  
Medium Permeability ◽  
Liquid Systems ◽  
And Performance ◽  
Solid Liquid

The behavior of an isothermal and non-reaction solid-liquid system can be model using a mathematical model based on the Mixtures’ Theory of Continuum Mechanics. The knowledge of the constitutive equations of this phenomenon, as pressure on the solids and medium permeability, is very important in the design and performance evaluation of the continuous thickeners or filters. In this work the batch sedimentation phenomena of a kaolin aqueous suspensions was investigated. The technique consists on measuring of the gamma rays attenuation when they cross the physical media as a function of the local concentration at several vertical positions in a reservoir. Using the experimental data and local concentration as a function of the attenuation curve, it is possible to determine the constitutive equations. The results were satisfactory, allowing simulations of this phenomenon for steady and transient regimes in future papers.

Sign in / Sign up

Export Citation Format

Share Document