Mass Transfer and Liquid-Film Formation in a Spray Tower for SO₂ Removal in Sodium Hydroxide Solution

Corresponding Author

Milene Costa Codolo

[email protected]

Federal University of São Paulo, Department of Chemical Engineering, Diadema, SP, Brazil.

Federal University of São Paulo, Department of Chemical Engineering, Diadema, SP, Brazil.Search for more papers by this author

Waldir Antonio Bizzo,

Waldir Antonio Bizzo

University of Campinas, Faculty of Mechanical Engineering, Campinas, SP, Brazil.

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Milene Costa Codolo,

Corresponding Author

Milene Costa Codolo

[email protected]

Federal University of São Paulo, Department of Chemical Engineering, Diadema, SP, Brazil.

Federal University of São Paulo, Department of Chemical Engineering, Diadema, SP, Brazil.Search for more papers by this author

Waldir Antonio Bizzo,

Waldir Antonio Bizzo

University of Campinas, Faculty of Mechanical Engineering, Campinas, SP, Brazil.

Search for more papers by this author

First published: 16 August 2016

https://doi.org/10.1002/ceat.201500389

Citations: 14

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Abstract

Spray towers allow for controlling air pollution in which a liquid is sprayed in small droplets to produce a large interfacial area for mass transfer between a gas and a liquid phase. An experimental study of a spray tower for removing SO₂ is described. The experiments were carried out under different operating conditions by varying the gas velocity, liquid flow rate, and SO₂ concentration. SO₂ removal efficiency, volumetric mass transfer coefficient, and liquid-film formation as a result of the collision of droplets against the tower wall are investigated. Removal efficiency and volumetric mass transfer coefficient are analyzed as a function of gas velocity, liquid flow rate, and SO₂ concentration, while liquid-film formation is evaluated as a function of tower height. The results indicate high removal efficiency. Correlations to predict the volumetric mass transfer coefficient are also proposed.

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Volume39, Issue10

October, 2016

Pages 1939-1945

Mass Transfer and Liquid-Film Formation in a Spray Tower for SO₂ Removal in Sodium Hydroxide Solution

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Mass Transfer and Liquid-Film Formation in a Spray Tower for SO₂ Removal in Sodium Hydroxide Solution