Numerical modeling of CO2 capture in a spray tower with aqueous ammonia and full-cone atomizers
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F26%3A0199241" target="_blank" >RIV/00216305:26210/26:0199241 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0301932225002812?pes=vor&utm_source=clarivate&getft_integrator=clarivate" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0301932225002812?pes=vor&utm_source=clarivate&getft_integrator=clarivate</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ijmultiphaseflow.2025.105405" target="_blank" >10.1016/j.ijmultiphaseflow.2025.105405</a>
Alternative languages
Result language
angličtina
Original language name
Numerical modeling of CO2 capture in a spray tower with aqueous ammonia and full-cone atomizers
Original language description
Chemical absorption in a spray tower using aqueous ammonia is a promising method for CO2 post-combustion capture, a key step in carbon capture and storage (CCS) approaches. However, this process is highly sensitive to atomization and subsequent droplet hydrodynamics. To investigate the impact of spray parameters on column performance, we conducted MATLAB calculations and CFD simulations focusing on droplet hydrodynamics, evaporation, and CO2 absorption. Evaporation was calculated using an infinite conductivity model while absorption was solved using an empirical model. The effect of droplet diameter on droplet entrainment and wall deposition was revealed via the concept of droplet terminal settling velocity and droplet stopping distance. The capture efficiency for optimal parameters determined by MATLAB calculations was 67 %, which was further enhanced to 74 % by adjusting the spray angle or reducing the gas velocity. CFD simulations of the spray column underlined the necessity of two-way coupled simulations as the spray significantly affects the gas flow and causes, among other things, back-mixing behavior. Droplet stopping distances were longer than those in MAT-LAB calculations, with discrepancies increasing alongside the liquid-to-gas ratio. The evaporative effect was minimal, as the gas quickly became saturated.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20400 - Chemical engineering
Result continuities
Project
<a href="/en/project/GA22-17806S" target="_blank" >GA22-17806S: Advanced liquid film and spray systems for gas cleaning and sorption purposes</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
ISSN
0301-9322
e-ISSN
1879-3533
Volume of the periodical
193
Issue of the periodical within the volume
dec 2025
Country of publishing house
GB - UNITED KINGDOM
Number of pages
16
Pages from-to
1-16
UT code for WoS article
001548943900001
EID of the result in the Scopus database
2-s2.0-105012951186