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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10500 - Earth and related environmental sciences

Project

<a href="/en/project/GF21-45227L" target="_blank" >GF21-45227L: Holistic approach to Rotating Packed Bed (RPB) absorption process with the use of 3D CFD, visual studies, and mass transfer experiments</a><br>

Continuities

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

Publication year

2025

Confidentiality

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

Name of the periodical

Chemical Engineering Journal

ISSN

1385-8947

e-ISSN

1873-3212

Volume of the periodical

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Issue of the periodical within the volume

524

Country of publishing house

CH - SWITZERLAND

Number of pages

19

Pages from-to

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UT code for WoS article

001606293400013

EID of the result in the Scopus database

2-s2.0-105019178253