Comprehensive spray characterization of air-assisted impinging jet atomizer for carbon capture applications

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F26%3A0194013" target="_blank" >RIV/00216305:26210/26:0194013 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0301932225000011" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0301932225000011</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijmultiphaseflow.2025.105123" target="_blank" >10.1016/j.ijmultiphaseflow.2025.105123</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Comprehensive spray characterization of air-assisted impinging jet atomizer for carbon capture applications

Popis výsledku v původním jazyce

Spray scrubbing for carbon dioxide (CO2) absorption has attracted research interest because it is a viable retrofitting option for existing power plants. For effective absorption, desired spray characteristics must be attained for a wide range of absorbent liquids with distinct physical properties. In this study, an air-assisted impinging jet atomizer was evaluated to determine its suitability for CO2 absorption using monoethanolamine (MEA). The study focused on understanding the influence of various physical parameters on the overall atomization process. Spray experiments were performed under quiescent atmospheric conditions at different liquid flow rates and air- to-liquid mass flow rate ratios (ALR). High-speed imaging and laser diffraction techniques were used for spray visualization and droplet size characterization, respectively. The study revealed that the primary atomization was either a hydrodynamic mode of breakup caused by hydrodynamic instabilities in a liquid sheet or an aerodynamic mode of breakup, where the breakup was dominated by gas-liquid interaction. A transition between these breakup processes occurred at an air-to-liquid momentum ratio of similar to 0.6, and a gas Weber number of similar to 30. Improved atomization was obtained in the aerodynamic mode of the breakup. A Sauter mean diameter (SMD) of the order of 60 mu m, along with a narrow size distribution, was obtained at high liquid flow rates, even at an ALR of 4 %. Furthermore, empirical correlations were proposed for SMD and spray angle as functions of gas Weber number, liquid Weber number, and Ohnesorge number. The detailed spray characterization performed in this study provides valuable insights into the atomization process of an air-assisted impinging jet atomizer and is crucial for testing this atomizer configuration in a spray column for CO2 capture.

Název v anglickém jazyce

Comprehensive spray characterization of air-assisted impinging jet atomizer for carbon capture applications

Popis výsledku anglicky

Spray scrubbing for carbon dioxide (CO2) absorption has attracted research interest because it is a viable retrofitting option for existing power plants. For effective absorption, desired spray characteristics must be attained for a wide range of absorbent liquids with distinct physical properties. In this study, an air-assisted impinging jet atomizer was evaluated to determine its suitability for CO2 absorption using monoethanolamine (MEA). The study focused on understanding the influence of various physical parameters on the overall atomization process. Spray experiments were performed under quiescent atmospheric conditions at different liquid flow rates and air- to-liquid mass flow rate ratios (ALR). High-speed imaging and laser diffraction techniques were used for spray visualization and droplet size characterization, respectively. The study revealed that the primary atomization was either a hydrodynamic mode of breakup caused by hydrodynamic instabilities in a liquid sheet or an aerodynamic mode of breakup, where the breakup was dominated by gas-liquid interaction. A transition between these breakup processes occurred at an air-to-liquid momentum ratio of similar to 0.6, and a gas Weber number of similar to 30. Improved atomization was obtained in the aerodynamic mode of the breakup. A Sauter mean diameter (SMD) of the order of 60 mu m, along with a narrow size distribution, was obtained at high liquid flow rates, even at an ALR of 4 %. Furthermore, empirical correlations were proposed for SMD and spray angle as functions of gas Weber number, liquid Weber number, and Ohnesorge number. The detailed spray characterization performed in this study provides valuable insights into the atomization process of an air-assisted impinging jet atomizer and is crucial for testing this atomizer configuration in a spray column for CO2 capture.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20300 - Mechanical engineering

Projekt

<a href="/cs/project/GA23-07722S" target="_blank" >GA23-07722S: Pokročilé energeticky účinné modifikace dvoumédiových trysek</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

INTERNATIONAL JOURNAL OF MULTIPHASE FLOW

ISSN

0301-9322

e-ISSN

1879-3533

Svazek periodika

184

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

15

Strana od-do

1-15

Kód UT WoS článku

001415558200001

EID výsledku v databázi Scopus

2-s2.0-85214317434