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首页> 外文期刊>Journal of thermal analysis and calorimetry >Evaluation of the dust potential hazard of thermal power plants through coal dust combustion and explosion characteristics
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Evaluation of the dust potential hazard of thermal power plants through coal dust combustion and explosion characteristics

机译：通过煤尘燃烧和爆炸特性评估火热电厂的灰尘潜力危害

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Thermal power is the main source of electricity in Taiwan, where coal is the primary fuel. However, concerns for potential fire and explosion hazards caused by coal dust are increasing. The problem regarding the storage or transportation process of coal cannot be neglected. This study explored four coal dust samples obtained from the three regions of South Africa, Russia, and Australia; the particle size D-50 of all the samples was < 75 mu m. The intrinsic safety characteristics of combustion and explosion in coal dust were studied using the minimum ignition energy (MIE) test, minimum ignition temperature (MIT) of cloud apparatus, and 20-L apparatus. Russian coal exhibited the lowest MIE and MIT values of 550 degrees C and 120 mJ, respectively. Furthermore, the minimum dust explosion concentration was 30 g m(-3) in Australian coal. These experimental results, combined with the on-site investigation, indicated that appropriate countermeasures are sufficient to reduce dust hazards. The results showed that the dust explosion risk of a properly operating thermal power plant is considerably low.
机译：火力发电是台湾的主要电力来源，而煤炭是台湾的主要燃料。然而，人们越来越担心煤尘造成的潜在火灾和爆炸危险。煤炭储存或运输过程中的问题不容忽视。本研究考察了从南非、俄罗斯和澳大利亚三个地区采集的四个煤尘样本；所有样品的粒径D-50均<75μm。采用最小点火能量（MIE）试验、云装置的最小点火温度（MIT）和20-L装置研究了煤粉燃烧和爆炸的本质安全特性。俄罗斯煤的MIE和MIT值最低，分别为550摄氏度和120兆焦耳。此外，澳大利亚煤炭中的最低粉尘爆炸浓度为30 g m（-3）。这些实验结果，结合现场调查，表明适当的对策足以减少粉尘危害。结果表明，正常运行的火电厂粉尘爆炸风险相当低。

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