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Statements

Subject Item
n2:RIV%2F60461373%3A22340%2F13%3A43895945%21RIV14-MSM-22340___
rdf:type
n9:Vysledek skos:Concept
dcterms:description
Mechanically agitated gas-liquid contactors are frequently used in the chemical, food and biochemical industries as fermenters and as hydrogenation or chlorination reactors. However wide the usage of such vessels is, their design is not based on chemical engineering data, but is still rather empirical. Thus, it is highly desirable to have a tool for the rational design of agitated gas-liquid contactors that is based on fundamental chemical engineering parameters that are transferable to other systems and operating conditions. Focusing on liquid film-controlled processes and using the data from fermenters of different scales, we develop kLa correlations that are suitable for scale-up. First, we discuss the way how to determine the proper experimental kLa values, which are not distorted by other equipment parameters as the gas residence time is. We demonstrate the possible kLa distortion on the pilot-plant experimental data by the comparison of the results obtained by two different experimental techniques. Further, we present physically correct kLa data for fully non-coalescent (sodium sulphate solution) batch. The data are presented both for laboratory and for pilot-plant fermenters. We identify the process parameters, the values of which are dependent on the vessel scale when operated under the same power input per unit volume, and, using these parameters, we develop common kLa correlations suitable to describe the data for various scales of the vessel. The correlations developed reduce the uncertainty in predicting the volume of industrial scale fermenters from almost 1/2 to 1/4 of their total volume, thereby enabling significant reductions in both the initial costs and operating costs. Mechanically agitated gas-liquid contactors are frequently used in the chemical, food and biochemical industries as fermenters and as hydrogenation or chlorination reactors. However wide the usage of such vessels is, their design is not based on chemical engineering data, but is still rather empirical. Thus, it is highly desirable to have a tool for the rational design of agitated gas-liquid contactors that is based on fundamental chemical engineering parameters that are transferable to other systems and operating conditions. Focusing on liquid film-controlled processes and using the data from fermenters of different scales, we develop kLa correlations that are suitable for scale-up. First, we discuss the way how to determine the proper experimental kLa values, which are not distorted by other equipment parameters as the gas residence time is. We demonstrate the possible kLa distortion on the pilot-plant experimental data by the comparison of the results obtained by two different experimental techniques. Further, we present physically correct kLa data for fully non-coalescent (sodium sulphate solution) batch. The data are presented both for laboratory and for pilot-plant fermenters. We identify the process parameters, the values of which are dependent on the vessel scale when operated under the same power input per unit volume, and, using these parameters, we develop common kLa correlations suitable to describe the data for various scales of the vessel. The correlations developed reduce the uncertainty in predicting the volume of industrial scale fermenters from almost 1/2 to 1/4 of their total volume, thereby enabling significant reductions in both the initial costs and operating costs.
dcterms:title
The design and scale-up of multiple-impeller fermenters for liquid film controlled processes The design and scale-up of multiple-impeller fermenters for liquid film controlled processes
skos:prefLabel
The design and scale-up of multiple-impeller fermenters for liquid film controlled processes The design and scale-up of multiple-impeller fermenters for liquid film controlled processes
skos:notation
RIV/60461373:22340/13:43895945!RIV14-MSM-22340___
n9:predkladatel
n10:orjk%3A22340
n3:aktivita
n8:S
n3:aktivity
S
n3:cisloPeriodika
neuveden
n3:dodaniDat
n11:2014
n3:domaciTvurceVysledku
n15:7356110 n15:1324284 n15:2851571
n3:druhVysledku
n4:J
n3:duvernostUdaju
n18:S
n3:entitaPredkladatele
n14:predkladatel
n3:idSjednocenehoVysledku
68556
n3:idVysledku
RIV/60461373:22340/13:43895945
n3:jazykVysledku
n13:eng
n3:klicovaSlova
volumetric mass transfer coefficient; scale-up; multiple-impeller; mixing; mass transfer correlations; mass transfer; fermenter
n3:klicoveSlovo
n6:scale-up n6:mass%20transfer%20correlations n6:mixing n6:multiple-impeller n6:volumetric%20mass%20transfer%20coefficient n6:mass%20transfer n6:fermenter
n3:kodStatuVydavatele
HR - Chorvatská republika
n3:kontrolniKodProRIV
[6AABA83E91D7]
n3:nazevZdroje
Kemija u Industrii
n3:obor
n16:CI
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
3
n3:rokUplatneniVysledku
n11:2013
n3:svazekPeriodika
216
n3:tvurceVysledku
Moucha, Tomáš Kordač, Michal Labík, Libor
s:issn
0022-9830
s:numberOfPages
12
n17:organizacniJednotka
22340