Simultaneous absorption of SO2 and NO in a stirred tank reactor with NACLO2/NAOH solutions

Hsin Chu; Tsung Wen Chien; Bour Wei Twu

doi:10.1023/A:1022838623521

Simultaneous absorption of SO₂ and NO in a stirred tank reactor with NACLO₂/NAOH solutions

Hsin Chu, Tsung Wen Chien, Bour Wei Twu

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

The wet scrubbing combined SO_x/NO removal system is one of the advanced air pollution control devices. This study tries to understand the kinetics of the absorption in the system. The absorption of SO₂ and simultaneous absorption of SO₂ and NO, whose concentrations are typical for flue gases emitted from coal-fired power plants, in a stirred tank reactor with NaClO₂/NaOH solutions were carried out at 50°C. The liquid-side and gas-side mass transfer coefficients of the system were determined. The results indicate that the absorption of SO₂ is completely gas-film controlled if the NaOH concentration is greater than 0.1 M or the NaClO₂ concentration is greater than 0.2 M. Adding SO₂ would decrease the absorption rate of NO; however, the addition of NO has no effect on the absorption rate Of SO₂. The existence of O₂ has no significant effect on the absorption rate Of SO₂ and NO in the combined SO_x/NO removal tests.

Original language	English
Pages (from-to)	337-350
Number of pages	14
Journal	Water, Air, and Soil Pollution
Volume	143
Issue number	1-4
DOIs	https://doi.org/10.1023/A:1022838623521
Publication status	Published - 2003 Feb

All Science Journal Classification (ASJC) codes

Environmental Engineering
Environmental Chemistry
Ecological Modelling
Water Science and Technology
Pollution

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10.1023/A:1022838623521

Cite this

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title = "Simultaneous absorption of SO2 and NO in a stirred tank reactor with NACLO2/NAOH solutions",

abstract = "The wet scrubbing combined SOx/NO removal system is one of the advanced air pollution control devices. This study tries to understand the kinetics of the absorption in the system. The absorption of SO2 and simultaneous absorption of SO2 and NO, whose concentrations are typical for flue gases emitted from coal-fired power plants, in a stirred tank reactor with NaClO2/NaOH solutions were carried out at 50°C. The liquid-side and gas-side mass transfer coefficients of the system were determined. The results indicate that the absorption of SO2 is completely gas-film controlled if the NaOH concentration is greater than 0.1 M or the NaClO2 concentration is greater than 0.2 M. Adding SO2 would decrease the absorption rate of NO; however, the addition of NO has no effect on the absorption rate Of SO2. The existence of O2 has no significant effect on the absorption rate Of SO2 and NO in the combined SOx/NO removal tests.",

author = "Hsin Chu and Chien, {Tsung Wen} and Twu, {Bour Wei}",

year = "2003",

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AU - Chien, Tsung Wen

AU - Twu, Bour Wei

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N2 - The wet scrubbing combined SOx/NO removal system is one of the advanced air pollution control devices. This study tries to understand the kinetics of the absorption in the system. The absorption of SO2 and simultaneous absorption of SO2 and NO, whose concentrations are typical for flue gases emitted from coal-fired power plants, in a stirred tank reactor with NaClO2/NaOH solutions were carried out at 50°C. The liquid-side and gas-side mass transfer coefficients of the system were determined. The results indicate that the absorption of SO2 is completely gas-film controlled if the NaOH concentration is greater than 0.1 M or the NaClO2 concentration is greater than 0.2 M. Adding SO2 would decrease the absorption rate of NO; however, the addition of NO has no effect on the absorption rate Of SO2. The existence of O2 has no significant effect on the absorption rate Of SO2 and NO in the combined SOx/NO removal tests.

AB - The wet scrubbing combined SOx/NO removal system is one of the advanced air pollution control devices. This study tries to understand the kinetics of the absorption in the system. The absorption of SO2 and simultaneous absorption of SO2 and NO, whose concentrations are typical for flue gases emitted from coal-fired power plants, in a stirred tank reactor with NaClO2/NaOH solutions were carried out at 50°C. The liquid-side and gas-side mass transfer coefficients of the system were determined. The results indicate that the absorption of SO2 is completely gas-film controlled if the NaOH concentration is greater than 0.1 M or the NaClO2 concentration is greater than 0.2 M. Adding SO2 would decrease the absorption rate of NO; however, the addition of NO has no effect on the absorption rate Of SO2. The existence of O2 has no significant effect on the absorption rate Of SO2 and NO in the combined SOx/NO removal tests.

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Simultaneous absorption of SO₂ and NO in a stirred tank reactor with NACLO₂/NAOH solutions

Abstract

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