Improved Pneumoconiosis Prevention: Surfactant-Added Spray System for Respirable Coal Dust
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초록
An occupational disease caused by prolonged inhalation of coal dust, pneumoconiosis can further develop into a more dangerous malady, such as bronchial disease, emphysema of the lungs, or pulmonary tuberculosis. Poor atmospheric working conditions in unhealthy coal mines can worsen the condition. Most coal mines currently use a simple water spray system to minimize coal dust and improve working conditions. This study performs a feasibility test on a more effective spray system using surfactants. Korea Coal Corporation provided coal dust samples for a scaled spraying model test. Chemical composition, physical shape, and particle size distribution of the sample dust were taken into consideration. A standard sink test was performed with four different surfactants at six different concentrations. Using the optimal surfactant chosen from the sink test, the overall collection efficiency of coal dust with the surfactant-added spray system increased by 11.23%, compared to the efficiency of the pure water spray. Also, the collection efficiency of fine dust (0.4 ㎛~2.1 ㎛) increased by approximately 40%. Spray systems using this kind of surfactant are judged to be effective in controlling fine dust below the geometric diameter of 3.5 ㎛, which is the size of the dust causing pneumoconiosis.
Abstract
An occupational disease caused by prolonged inhalation of coal dust, pneumoconiosis can further develop into a more dangerous malady, such as bronchial disease, emphysema of the lungs, or pulmonary tuberculosis. Poor atmospheric working conditions in unhealthy coal mines can worsen the condition. Most coal mines currently use a simple water spray system to minimize coal dust and improve working conditions. This study performs a feasibility test on a more effective spray system using surfactants. Korea Coal Corporation provided coal dust samples for a scaled spraying model test. Chemical composition, physical shape, and particle size distribution of the sample dust were taken into consideration. A standard sink test was performed with four different surfactants at six different concentrations. Using the optimal surfactant chosen from the sink test, the overall collection efficiency of coal dust with the surfactant-added spray system increased by 11.23%, compared to the efficiency of the pure water spray. Also, the collection efficiency of fine dust (0.4 ㎛~2.1 ㎛) increased by approximately 40%. Spray systems using this kind of surfactant are judged to be effective in controlling fine dust below the geometric diameter of 3.5 ㎛, which is the size of the dust causing pneumoconiosis.
참고문헌 (7)
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