Flue gas desulfurization with an electrostatic spraying absorber

Binlin Dou; Young Cheol Byun; Jungho Hwang

doi:10.1021/ef700646c

Flue gas desulfurization with an electrostatic spraying absorber

Binlin Dou, Young Cheol Byun, Jungho Hwang

Department of Mechanical Engineering

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

40 Citations (Scopus)

Abstract

A flue gas desulfurization device and process were developed and tested in this study. The process used an electrostatic spraying absorber (ESA) as the reactor, where SO₂ was absorbed into an aqueous slurry of reactive Ca(OH)₂. The absorption process was analyzed by using the two-film theory of mass-transfer. Both the liquid and gas side resistances were important, and the absorption rate was controlled by a combination of both gas-film and liquid-film diffusion controls. The ESA characteristics were investigated between applied voltages from - 10 to 10 kV at various slurry flow rates. The SO₂ removal efficiency was independent of the polarity of the applied voltage. A slightly higher efficiency was obtained with the conduction charging configuration than with the induction charging configuration. A model of external mass-transfer with a chemical enhancement factor was proposed for estimation of the absorption efficiency; the theoretical SO₂ removal efficiency obtained was compared with the experimental data.

Original language	English
Pages (from-to)	1041-1045
Number of pages	5
Journal	Energy and Fuels
Volume	22
Issue number	2
DOIs	https://doi.org/10.1021/ef700646c
Publication status	Published - 2008 Mar

All Science Journal Classification (ASJC) codes

Chemical Engineering(all)
Fuel Technology
Energy Engineering and Power Technology

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title = "Flue gas desulfurization with an electrostatic spraying absorber",

abstract = "A flue gas desulfurization device and process were developed and tested in this study. The process used an electrostatic spraying absorber (ESA) as the reactor, where SO2 was absorbed into an aqueous slurry of reactive Ca(OH)2. The absorption process was analyzed by using the two-film theory of mass-transfer. Both the liquid and gas side resistances were important, and the absorption rate was controlled by a combination of both gas-film and liquid-film diffusion controls. The ESA characteristics were investigated between applied voltages from - 10 to 10 kV at various slurry flow rates. The SO2 removal efficiency was independent of the polarity of the applied voltage. A slightly higher efficiency was obtained with the conduction charging configuration than with the induction charging configuration. A model of external mass-transfer with a chemical enhancement factor was proposed for estimation of the absorption efficiency; the theoretical SO2 removal efficiency obtained was compared with the experimental data.",

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AB - A flue gas desulfurization device and process were developed and tested in this study. The process used an electrostatic spraying absorber (ESA) as the reactor, where SO2 was absorbed into an aqueous slurry of reactive Ca(OH)2. The absorption process was analyzed by using the two-film theory of mass-transfer. Both the liquid and gas side resistances were important, and the absorption rate was controlled by a combination of both gas-film and liquid-film diffusion controls. The ESA characteristics were investigated between applied voltages from - 10 to 10 kV at various slurry flow rates. The SO2 removal efficiency was independent of the polarity of the applied voltage. A slightly higher efficiency was obtained with the conduction charging configuration than with the induction charging configuration. A model of external mass-transfer with a chemical enhancement factor was proposed for estimation of the absorption efficiency; the theoretical SO2 removal efficiency obtained was compared with the experimental data.

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Flue gas desulfurization with an electrostatic spraying absorber

Abstract

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