Experimental study on mass transfer mechanism in gas - liquid dispersions.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F04%3A00011117" target="_blank" >RIV/60461373:22340/04:00011117 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Experimental study on mass transfer mechanism in gas - liquid dispersions.

Popis výsledku v původním jazyce

The mass transfer mechanism is studied through mass transfer coefficient dependencies on operating parameters (power dissipation rate, gas concentration) and physical properties of the system (viscosity, surface tension). These dependencies are usually interpreted through two distinct theories: first based on bubble motion characteristics (slip velocity models), second based on turbulence intensity near the interface. Experimental data are obtained in an agitated vessel (T=0.18m) equipped with single Rushton turbine (D=0.075m) and calm liquid reactor (T=0.12m). The mass transfer coefficient in the agitated vessel is measured by Danckwerts' plot technique applied on a system sulfite - pure oxygen or sulfite - air. The results are compared to the literature ones and successfully correlated by a model equation based on the turbulence theory. The influence of surfactants is discussed in terms of surface pressure and molecule structure, both considered as important.

Název v anglickém jazyce

Experimental study on mass transfer mechanism in gas - liquid dispersions.

Popis výsledku anglicky

The mass transfer mechanism is studied through mass transfer coefficient dependencies on operating parameters (power dissipation rate, gas concentration) and physical properties of the system (viscosity, surface tension). These dependencies are usually interpreted through two distinct theories: first based on bubble motion characteristics (slip velocity models), second based on turbulence intensity near the interface. Experimental data are obtained in an agitated vessel (T=0.18m) equipped with single Rushton turbine (D=0.075m) and calm liquid reactor (T=0.12m). The mass transfer coefficient in the agitated vessel is measured by Danckwerts' plot technique applied on a system sulfite - pure oxygen or sulfite - air. The results are compared to the literature ones and successfully correlated by a model equation based on the turbulence theory. The influence of surfactants is discussed in terms of surface pressure and molecule structure, both considered as important.

Druh

D - Stať ve sborníku

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2004

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings 16th International Congress of Chemical and Process Engineering CHISA 2004

ISBN

80-86059-40-5

ISSN

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e-ISSN

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Počet stran výsledku

9

Strana od-do

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Název nakladatele

CHISA

Místo vydání

Praha

Místo konání akce

Praha

Datum konání akce

22. 8. 2004

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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