Importance of atomizer choice for CO2 capture in spray columns
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F25%3APU155143" target="_blank" >RIV/00216305:26210/25:PU155143 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0016236124032290" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0016236124032290</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.fuel.2024.134078" target="_blank" >10.1016/j.fuel.2024.134078</a>
Alternative languages
Result language
angličtina
Original language name
Importance of atomizer choice for CO2 capture in spray columns
Original language description
CO2 is one of the most severe greenhouse gases released into the atmosphere and is responsible for increasing global temperatures. Post-combustion CO2 capture can reduce the amount of CO2 released. Spray columns, as simple gas cleaning reactors, can utilize different types of atomizers. The CO2 capture process requires well- tailored spray characteristics, such as suitable mean drop size and drop size distribution, droplet density, spray cone angle, and droplet velocity. Small droplets are prone to be carried away by ambient flow causing significant sorbent losses, while large droplets have a small surface area, which limits the rate of CO2 mass transfer. This paper compares pressure-swirl, flat-fan, twin-fluid, and showerhead atomizers operated at a constant solvent flow rate of 140 kg/h. Atomizer rescaling was used to change the liquid pressure. Droplet sizes were probed with a high-resolution shadowgraph sizer. Absorption tests were carried out on a laboratory-scale spray tower with a diameter of 0.2 m and a height of 2.5 m. The absorption liquid was a 30 wt% monoethanolamine (MEA) solution, and the modeled flue gas contained a 10% CO2 mole fraction. The absorption efficiency systematically increased with a reduction in Sauter mean diameter (D32), i.e. with atomizer input energy. Pressure loss in the spray column is directly proportional to absorption efficiency. Effervescent atomizers achieved the worst energy efficiency and the largest fraction of droplets carried away by the ambient flow, resulting in significant sorbent loss. Flat-fan and pressure-swirl types were found to be excellent all-round atomizers.
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
20700 - Environmental engineering
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
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
FUEL
ISSN
0016-2361
e-ISSN
1873-7153
Volume of the periodical
385
Issue of the periodical within the volume
1
Country of publishing house
GB - UNITED KINGDOM
Number of pages
10
Pages from-to
1-10
UT code for WoS article
001394524600001
EID of the result in the Scopus database
2-s2.0-85212848566