Eulerian Simulation of Dense Solid-Liquid Suspension in Multi-Stage Stirred Vessel.

2001 ◽  
Vol 34 (5) ◽  
pp. 585-594 ◽  
Author(s):  
HELENE BARRUE ◽  
JOËL BERTRAND ◽  
BENOÎT CRISTOL ◽  
CATHERINE XUEREB
Keyword(s):  
Stirred Vessel ◽  
Liquid Suspension ◽  
Multi Stage ◽  
Solid Liquid

scholarly journals Mathematical modeling and experimental study on solid–liquid suspension separation in ultrasonic standing wave field

2021 ◽  
pp. 146134842110229
Author(s):  
Yajing Wang ◽  
Liqun Wu ◽  
Yaxing Wang ◽  
Yafei Fan
Keyword(s):  
Standing Wave ◽  
Sound Pressure ◽  
Acoustic Radiation ◽  
Sound Field ◽  
Radiation Force ◽  
High Energy ◽  
Factors Affecting ◽  
Liquid Suspension ◽  
Ultrasonic Standing Wave ◽  
Solid Liquid

A new method of removing waste chips is proposed by focusing on the key factors affecting the processing quality and efficiency of high energy beams. Firstly, a mathematical model has been established to provide the theoretical basis for the separation of solid–liquid suspension under ultrasonic standing wave. Secondly, the distribution of sound field with and without droplet has been simulated. Thirdly, the deformation and movement of droplets are simulated and tested. It is found that the sound pressure around the droplet is greater than the sound pressure in the droplet, which can promote the separation of droplets and provide theoretical support for the ultrasonic suspension separation of droplet; under the interaction of acoustic radiation force, surface tension, adhesion, and static pressure, the droplet is deformed so that the gas fluid around the droplet is concentrated in the center to achieve droplet separation, and the droplet just as a flat ball with a central sag is stably suspended in the acoustic wave node.

Solid-liquid suspension of microcarriers in stirred tank bioreactor – Experimental and numerical analysis

2018 ◽  
Vol 180 ◽  
pp. 52-63 ◽  
Author(s):  
Angélique Delafosse ◽  
Céline Loubière ◽  
Sébastien Calvo ◽  
Dominique Toye ◽  
Eric Olmos
Keyword(s):  
Numerical Analysis ◽  
Stirred Tank ◽  
Stirred Tank Bioreactor ◽  
Liquid Suspension ◽  
Solid Liquid

scholarly journals A New Model for Estimation of Just-Suspension Speed Based on Lift Force for Solid–Liquid Suspension in a Stirred Tank

2016 ◽  
Vol 49 (8) ◽  
pp. 737-746 ◽  
Author(s):  
Zauyah Zamzam ◽  
Shiro Yoshikawa ◽  
Shinichi Ookawara ◽  
Yoshikazu Kato
Keyword(s):  
Lift Force ◽  
Stirred Tank ◽  
New Model ◽  
Liquid Suspension ◽  
Solid Liquid

scholarly journals Solid-liquid Mixing in a Stirred Vessel

2014 ◽  
Vol 28 (4) ◽  
pp. 437-443 ◽  
Author(s):  
Ryuta MISUMI ◽  
Kazuhiko NISHI ◽  
Meguru KAMINOYAMA
Keyword(s):  
Stirred Vessel ◽  
Liquid Mixing ◽  
Solid Liquid

scholarly journals Scale-Up of Solid-Liquid Mixing Based on Constant Power/Volume and Equal Blend Time Using VisiMix Simulation

2018 ◽  
Vol 187 ◽  
pp. 04002
Author(s):  
Megawati ◽  
Bayu Triwibowo ◽  
Karwono ◽  
Waliyuddin Sammadikun ◽  
Rofiatun Musfiroh
Keyword(s):  
Solid Phase ◽  
Scale Up ◽  
Solid Particles ◽  
Liquid Mixing ◽  
Liquid Suspension ◽  
Two Parameters ◽  
Solid Liquid ◽  
Tank Geometry ◽  
Impeller Geometry

Mixing is one of the important process in many areas of chemical industries, for instance pharmaceutical, drug, ink, paint and other industries. Solid-liquid suspension is produced for 80% of all mixing industries such as leaching process, crystallization process, catalytic reactions, precipitation, coagulation, dissolution and other applications. Two main objectives in solid-liquid mixing namely, avoid settling of solid particles on the tank bottom and ensure the solid particles are uniformly distributed. Many factors that can affect the quality of solid-liquid mixing, they are tank geometry, impeller geometry and speed, baffles, viscosity and density of media. Scale-up of the process is important to conduct before produce it on commercial scale. Two parameters for scale-up solid-liquid mixing are equal blend time and power per volume. Before scaling up the process to industrial scale, an engineer must know the condition of the mixture between both of two. VisiMix can simulating scale-up of solid-liquid mixing in order to know the phenomena inside the tank without conducting a large number of experiments and cheaper. The simulation start from keep the ratio of impeller to tank diameter remains constant, then change the condition operation of mixing. In this paper, power per volume parameter is more recommended as a result of the degree of uniformity of solid phase in liquid.

True moving bed chromatography: solid–liquid multi-stage counter-current extraction

1999 ◽  
Vol 849 (1) ◽  
pp. 61-69 ◽  
Author(s):  
Hideyuki Nishizawa ◽  
Kayoko Tahara ◽  
Shinobu Miyamori ◽  
Yoko Motegi ◽  
Tomoko Shoji ◽  
...  
Keyword(s):  
Moving Bed ◽  
Multi Stage ◽  
Solid Liquid ◽  
Counter Current

scholarly journals Proteinaceous Residue Removal from Oat β-Glucan Extracts Obtained by Alkaline Water Extraction

Molecules ◽  
2019 ◽  
Vol 24 (9) ◽  
pp. 1729 ◽  
Author(s):  
Joanna Harasym ◽  
Ewa Żyła ◽  
Katarzyna Dziendzikowska ◽  
Joanna Gromadzka-Ostrowska
Keyword(s):  
Molar Mass ◽  
Raw Material ◽  
Starch Hydrolysis ◽  
Amine Nitrogen ◽  
Residue Removal ◽  
Multi Stage ◽  
Aqueous Solvent ◽  
Oat Bran ◽  
Complex Procedure ◽  
Solid Liquid

Background: Wet methods of 1-3, 1-4 -β-D-glucan isolation from cereals differ mainly in the type of grain fraction used as raw material, the solid-liquid ratio of β-glucan in raw material vs. solvent used, and the type of aqueous solvent modification (alkali, neutral or acidic). All these factors impact the characterization of the residues finally found in extracts. Oat bran is a rich source of globulin fraction which can be transferred into the extracts, especially when a high pH is employed. Methods: A multi-stage (enzymatic and acidic) purification procedure was performed to remove the residues, especially starch and protein, from β-glucan isolates from oat of different molar mass. Pancreatin, thermostable α-amylase, amyloglucosidase, and papain were used for consecutive residue removal. Three levels of low pH = 4.5, 3.5 and 3.0 were also tested for effective protein precipitation. Results: The starch hydrolysis and liquefaction significantly facilitate the proteinaceous matter removal although papain usage showed an intensive unfavorable impact on β-glucan molar mass. Soluble protein content was significantly decreased after pancreatin and α-amylase treatment, while the significant reduction of amine nitrogen was noted after complete starch hydrolysis and a second acidification step. Conclusions: A complex procedure employing different enzymes is needed to successfully reduce the possibly bioactive residues in isolated oat β-glucan fractions.

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