Abstract
ABSTRACT This study improved collection efficiency of the mist eliminator used for wet flue gas desulfurization facilities. The commonly used wave-plate mist eliminator with a drainage channel was chosen as a reference model and its performance was compared with the performance of a wave-plate mist eliminator with perforated plates attached to the front of each drainage channel. Simulations were performed to compare the dust collection performance of the mist eliminators. We could confirm that the addition of perforated plates to the mist eliminator changed the particle behavior in front of the drainage channel and induced the passage of particles through the mist eliminator and into the drainage channel. Subsequent experiments confirmed that dust collection performance was improved with the use of the perforated plates. The use of the mist eliminator designed in this study is expected to greatly reduce the amount of air pollutants emitted from various industrial facilities.
Highlights
As the number of days with high concentration of fine dust particles, defined as particulate matter (PM) that is less than 10 μ m, in the air has increased, there has been greater interest in the study of fine dust
In order to reduce the emissions of fine dust and SOx, a thermal power plant is generally equipped with a selective catalytic reduction system, an electrostatic precipitator, and a flue gas desulfurization (FGD) facility
We investigated a method for improving dust collection efficiency, by modifying the basic wave-plate mist eliminators installed in the wet flue gas desulfurization facility of thermal power plants, to remove particulate matter
Summary
As the number of days with high concentration of fine dust particles, defined as particulate matter (PM) that is less than 10 μ m, in the air has increased, there has been greater interest in the study of fine dust. It has been found that fine dust can cause lung cancer (Pope et al, 2002), and death due to respiratory diseases have been shown to be closely related to atmospheric PM2.5 concentrations (Guaita et al, 2011; Perez et al, 2012; Kim et al, 2018). Exposure to fine dust can lead to a variety of diseases, including cardiovascular disease, bronchial asthma, atherosclerosis, premature death, and birth defects (Basu et al, 2014; Kang and Kim, 2014; Lung et al, 2016); it is essential to investigate ways to reduce the atmospheric concentration of fine dust. A mist eliminator is installed in the FGD to remove droplets used for absorbing SOx (Kim et al, 2019)
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