Comparison of the mass transfer efficiency of random and structured packings under distillation of positive, neutral, and negative system in the i.d. 0.3 m column

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F25%3A43933545" target="_blank" >RIV/60461373:22340/25:43933545 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0017931026001523?pes=vor&utm_source=scopus&getft_integrator=scopus" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0017931026001523?pes=vor&utm_source=scopus&getft_integrator=scopus</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijheatmasstransfer.2026.128476" target="_blank" >10.1016/j.ijheatmasstransfer.2026.128476</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Comparison of the mass transfer efficiency of random and structured packings under distillation of positive, neutral, and negative system in the i.d. 0.3 m column

Popis výsledku v původním jazyce

Distillation experiments were carried out under total reflux in a 0.3 m i.d. column equipped with a structured packing (Sulzer MellapakPlus™ 252.Y) and a lattice-type random packing (Sulzer NeXRing™ 0.7). Binary C&lt;inf&gt;6&lt;/inf&gt;–C&lt;inf&gt;7&lt;/inf&gt; hydrocarbon mixtures were investigated, including cyclohexane/n-heptane (negative system) and n-hexane/cyclohexane (positive system). Given the close similarity of the gas-phase properties of the systems, comparable separation efficiencies would be expected. Nevertheless, the height equivalent to a theoretical plate differed by approximately 15–20% under identical F &lt;inf&gt;G&lt;/inf&gt; factors, with the highest HETP observed for the negative system and the lowest for the positive system. The same trend was found for both structured and random packings, indicating that the effect is not restricted to a specific packing type. Compared with earlier studies employing wetted-wall columns and first-generation random packings, the magnitude of the effect is reduced for modern industrial packings. Existing models fail to provide a satisfactory quantitative description of the observed behavior. © © 2026. Published by Elsevier Ltd.

Název v anglickém jazyce

Comparison of the mass transfer efficiency of random and structured packings under distillation of positive, neutral, and negative system in the i.d. 0.3 m column

Popis výsledku anglicky

Distillation experiments were carried out under total reflux in a 0.3 m i.d. column equipped with a structured packing (Sulzer MellapakPlus™ 252.Y) and a lattice-type random packing (Sulzer NeXRing™ 0.7). Binary C&lt;inf&gt;6&lt;/inf&gt;–C&lt;inf&gt;7&lt;/inf&gt; hydrocarbon mixtures were investigated, including cyclohexane/n-heptane (negative system) and n-hexane/cyclohexane (positive system). Given the close similarity of the gas-phase properties of the systems, comparable separation efficiencies would be expected. Nevertheless, the height equivalent to a theoretical plate differed by approximately 15–20% under identical F &lt;inf&gt;G&lt;/inf&gt; factors, with the highest HETP observed for the negative system and the lowest for the positive system. The same trend was found for both structured and random packings, indicating that the effect is not restricted to a specific packing type. Compared with earlier studies employing wetted-wall columns and first-generation random packings, the magnitude of the effect is reduced for modern industrial packings. Existing models fail to provide a satisfactory quantitative description of the observed behavior. © © 2026. Published by Elsevier Ltd.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20300 - Mechanical engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER

ISSN

0017-9310

e-ISSN

1879-2189

Svazek periodika

260

Číslo periodika v rámci svazku

June

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

1-9

Kód UT WoS článku

001685522300001

EID výsledku v databázi Scopus

2-s2.0-105029245011