煤和碳质页岩的自燃原因和机理

• 作 者: 孙非
• 出 处: 煤矿安全
• 发表日期: 1990年09期
• 关键词: 碳质页岩 自然发火 内因火灾 蒸汽发生器 自热 氧化速度 黄铁矿化 化学氧化 放热过程 间隙溶液

目前对沉积岩的自燃环境意见不一。实验表明,湿煤和湿碳质页岩一般要产生自燃。例如,中亚各煤矿的内因火灾频率与煤的湿度达到27～28%有重要关系。一些专家认为,煤和碳质页岩的自然发火只取决于其中的碳化物。在这种条件下析出水、CO 和 CO_2。实践表明,放热

At present, there are different opinions on the spontaneous combustion of sedimentary rocks. Experiments show that wet coal and wet carbonaceous shale generally produce spontaneous combustion. For example, the frequency of internal fires in various coal mines in Central Asia is of great importance to the coal’s moisture content of 27-28%. Some experts believe that spontaneous combustion of coal and carbonaceous shale depends only on the carbide. Under this condition, water, CO and CO 2 are precipitated. Practice shows that exothermic