Advanced absorption model of rotating packed beds: Mass transfer in packing and cavity zone

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F26%3A0199339" target="_blank" >RIV/00216305:26210/26:0199339 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S1385894725105779" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1385894725105779</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cej.2025.169734" target="_blank" >10.1016/j.cej.2025.169734</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Advanced absorption model of rotating packed beds: Mass transfer in packing and cavity zone

Popis výsledku v původním jazyce

A comprehensive absorption model was developed for a counter-current rotating packed bed apparatus. The model describes the mass transfer phenomena occurring in both the packing zone and the cavity zone. It was shown that the droplet size distribution follows log-normal function and is dependent mainly on the size and rotational speed of the packing. According to their characteristics, primary droplets present in the cavity zone were divided into four classes: pseudo-mothers, non-splashing mothers, splashing mothers and daughters. The entrained droplets (pseudo-mothers and daughters) follow the gas back towards the rotor and are partially deposed along the way due to gas phase turbulence, which is described by the proposed return coefficient. It was determined that mass transfer efficiency of the cavity zone depends mostly on size and rotational speed of the packing (primary droplet size and velocity distribution, as well as tangential acceleration of the gas), curvatures of packing and casing (radial component of mother droplet velocity), and gas flow rate (residence time of entrained droplets). The model has been successfully validated with experimental data within ±25 % relative error range. Simulations show that decrease in packing zone size may be beneficial to the overall process, e.g. at casing radius of 320 mm, reduction of the packing radius from 200 mm to 150 mm leads to over 15 % increase in CO2 absorption efficiency.

Název v anglickém jazyce

Advanced absorption model of rotating packed beds: Mass transfer in packing and cavity zone

Popis výsledku anglicky

A comprehensive absorption model was developed for a counter-current rotating packed bed apparatus. The model describes the mass transfer phenomena occurring in both the packing zone and the cavity zone. It was shown that the droplet size distribution follows log-normal function and is dependent mainly on the size and rotational speed of the packing. According to their characteristics, primary droplets present in the cavity zone were divided into four classes: pseudo-mothers, non-splashing mothers, splashing mothers and daughters. The entrained droplets (pseudo-mothers and daughters) follow the gas back towards the rotor and are partially deposed along the way due to gas phase turbulence, which is described by the proposed return coefficient. It was determined that mass transfer efficiency of the cavity zone depends mostly on size and rotational speed of the packing (primary droplet size and velocity distribution, as well as tangential acceleration of the gas), curvatures of packing and casing (radial component of mother droplet velocity), and gas flow rate (residence time of entrained droplets). The model has been successfully validated with experimental data within ±25 % relative error range. Simulations show that decrease in packing zone size may be beneficial to the overall process, e.g. at casing radius of 320 mm, reduction of the packing radius from 200 mm to 150 mm leads to over 15 % increase in CO2 absorption efficiency.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10500 - Earth and related environmental sciences

Projekt

<a href="/cs/project/GF21-45227L" target="_blank" >GF21-45227L: Holistický přístup k procesu absorpce v rotačním loži (RPB) s využitím 3D CFD, vizualizačních experimentů a experimentů přenosu hmoty</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Chemical Engineering Journal

ISSN

1385-8947

e-ISSN

1873-3212

Svazek periodika

—

Číslo periodika v rámci svazku

524

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

19

Strana od-do

—

Kód UT WoS článku

001606293400013

EID výsledku v databázi Scopus

2-s2.0-105019178253