Gas-phase mass-transfer characteristics of Mellapak 250Y structured packing under distillation conditions.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F14%3A43898045" target="_blank" >RIV/60461373:22340/14:43898045 - 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

Gas-phase mass-transfer characteristics of Mellapak 250Y structured packing under distillation conditions.

Popis výsledku v původním jazyce

This paper refers on gas mass-transfer characteristics of several metal sheet Mellapak structured packings (M250Y, M350Y, M452Y, M500Y) under absorption conditions. These characteristics have been measured using standard absorption systems of SO2 chemisorption into the NaOH aqueous solution (kGa) and CO2 chemisorption into the NaOH aqueous solution (effective area a). Measurements were performed with four elements of the packing with diameter of 0.29 m and total height of 0.84 m. Gas-phase mass-transfer coefficients for all studied packings have been correlated by the dimensionless equation . The experimental values of kG are in the most cases significantly under-predicted by fundamental mass-transfer models, wetted-wall column correlations and by the model packages developed for structured packing. The exponent 0.622 of gas Reynolds criteria is lower than expected by the models starting from the imagination of the flow through the channel and corresponding experiments with wetted-wall columns. The revealed value of the exponent agrees better with those found for flow around submerged objects like spheres or through the bed consisting of random packing, suggesting that the wetted wall column is not a suitable experimental simplification for the study of structured packings.

Název v anglickém jazyce

Gas-phase mass-transfer characteristics of Mellapak 250Y structured packing under distillation conditions.

Popis výsledku anglicky

This paper refers on gas mass-transfer characteristics of several metal sheet Mellapak structured packings (M250Y, M350Y, M452Y, M500Y) under absorption conditions. These characteristics have been measured using standard absorption systems of SO2 chemisorption into the NaOH aqueous solution (kGa) and CO2 chemisorption into the NaOH aqueous solution (effective area a). Measurements were performed with four elements of the packing with diameter of 0.29 m and total height of 0.84 m. Gas-phase mass-transfer coefficients for all studied packings have been correlated by the dimensionless equation . The experimental values of kG are in the most cases significantly under-predicted by fundamental mass-transfer models, wetted-wall column correlations and by the model packages developed for structured packing. The exponent 0.622 of gas Reynolds criteria is lower than expected by the models starting from the imagination of the flow through the channel and corresponding experiments with wetted-wall columns. The revealed value of the exponent agrees better with those found for flow around submerged objects like spheres or through the bed consisting of random packing, suggesting that the wetted wall column is not a suitable experimental simplification for the study of structured packings.

Druh

D - Stať ve sborníku

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

<a href="/cs/project/GA13-01251S" target="_blank" >GA13-01251S: Experimentální ověření rychlostního návrhu destilačních kolon založená na transportních koeficientech měřených přímo v destilační koloně</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název statě ve sborníku

DA2014 Proceedings

ISBN

978-3-89746-174-1

ISSN

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e-ISSN

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Počet stran výsledku

7

Strana od-do

466-472

Název nakladatele

Dechema

Místo vydání

Frankfurt am Main

Místo konání akce

Friedrichshafen

Datum konání akce

14. 9. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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