Liquid mixing time and gas distribution in aerated multiple-impeller stirred tanks

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F22%3A43925331" target="_blank" >RIV/60461373:22340/22:43925331 - isvavai.cz</a>

Výsledek na webu

<a href="https://reader.elsevier.com/reader/sd/pii/S0263876222003021?token=99BCA6301B499E40519147A4ACD1ABB788C5CC0AE4DD4C2F5F401A87F0235CABB3F07B1D908766007C438752A0B808D3&originRegion=eu-west-1&originCreation=20230221075045" target="_blank" >https://reader.elsevier.com/reader/sd/pii/S0263876222003021?token=99BCA6301B499E40519147A4ACD1ABB788C5CC0AE4DD4C2F5F401A87F0235CABB3F07B1D908766007C438752A0B808D3&originRegion=eu-west-1&originCreation=20230221075045</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cherd.2022.06.021" target="_blank" >10.1016/j.cherd.2022.06.021</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Liquid mixing time and gas distribution in aerated multiple-impeller stirred tanks

Popis výsledku v původním jazyce

Gas-liquid fluid dynamics and mass transfer are crucial aspects of aerobic fermentation and robust methodologies for their determination in industrial bioreactors are expected to provide significant improvements in many production processes. In this work, a gas-liquid stirred tank of high aspect ratio, that replicates the geometry of typical industrial aerated fermenters, is investigated. In particular, the liquid phase homogenization dynamics and the gas phase spatial distribution are determined. The selected methodology is based on the analysis of the conductivity measurements obtained by Electrical Resistance Tomography. The gas-liquid flow regimes and the mixing time are identified at various gas flow rates and impeller speeds, thus covering different gas-liquid regimes. Data collected with vertical and horizontal arrangements of the electrodes allow to obtain a detailed picture of the equipment working mode and to gain insight into the gas-liquid flow dynamics under optically inaccessible conditions. Quantitative evaluation of the reliability of the collected data is attempted by comparing the results obtained with the vertical and horizontal arrangements in the same locations. © 2022 Institution of Chemical Engineers

Název v anglickém jazyce

Liquid mixing time and gas distribution in aerated multiple-impeller stirred tanks

Popis výsledku anglicky

Gas-liquid fluid dynamics and mass transfer are crucial aspects of aerobic fermentation and robust methodologies for their determination in industrial bioreactors are expected to provide significant improvements in many production processes. In this work, a gas-liquid stirred tank of high aspect ratio, that replicates the geometry of typical industrial aerated fermenters, is investigated. In particular, the liquid phase homogenization dynamics and the gas phase spatial distribution are determined. The selected methodology is based on the analysis of the conductivity measurements obtained by Electrical Resistance Tomography. The gas-liquid flow regimes and the mixing time are identified at various gas flow rates and impeller speeds, thus covering different gas-liquid regimes. Data collected with vertical and horizontal arrangements of the electrodes allow to obtain a detailed picture of the equipment working mode and to gain insight into the gas-liquid flow dynamics under optically inaccessible conditions. Quantitative evaluation of the reliability of the collected data is attempted by comparing the results obtained with the vertical and horizontal arrangements in the same locations. © 2022 Institution of Chemical Engineers

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20401 - Chemical engineering (plants, products)

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Chemical Engineering Research and Design

ISSN

0263-8762

e-ISSN

1744-3563

Svazek periodika

184

Číslo periodika v rámci svazku

August

Stát vydavatele periodika

SG - Singapurská republika

Počet stran výsledku

12

Strana od-do

501-512

Kód UT WoS článku

000841163700006

EID výsledku v databázi Scopus

2-s2.0-85132941254