Coal particle dispersion monitoring system |
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| Institution: | 1. Department of Mechanical Engineering, Sethu Institute of Technology, Kariapatti 626115, Tamilnadu, India;2. Department of Mechanical Engineering, Thiagarajar College of Engineering, Madurai 625015, Tamilnadu, India;1. Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea;2. Institute of Environmental Medicine, Seoul National University Medical Research Center, Seoul, Republic of Korea;3. Environmental Health Center, Seoul National University College of Medicine, Seoul, Republic of Korea |
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| Abstract: | A monitoring system for coal panicle dispersion at coal storage yards is necessary to meet environmental standards for the operation of coal fired power plants. We have developed a system having three functions as follows: - 1.(1) To measure coal particle concentrations at the first connecting part of belt conveyors.
- 2.(2) To predict occurrence of coal particle dispersion during stacking.
- 3.(3) To moisten the coal at the second connecting part of belt conveyors when coal particle dispersion occurs.
The generation of coal dispersion is determined by whether or not the hygroscopic moisture is greater than the critical hygroscopic moisture value for each coal type. Coal particle concentrations are measured using dust meters. In this report, the dust meter readings were related to emission rate of coal particle and dustiness index of coarse dust defined by ASTM D547-41 in order to predict occurrence of coal particle dispersion using dust meters.The adaptability of the system to real coal handling facilities was examined by a model which consisted of belt conveyors, a stacker, connecting parts and the monitoring system. As a result of these experiments, it was demonstrated that coal particle dispersion can be suppressed by means of wetting coal in response to dust meter readings. |
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