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多数煤能自热,这给煤炭开采和贮运带来困难。现实中消除煤的自热是不可能的,不过,若能掌握自燃机理及其影响因素,则可有效地控制煤炭自燃。煤的自燃过程可分6个阶段。其中包括水吸附阶段和5个氧化阶段,即:化学吸附阶段(煤温达70℃),过氧化物分解阶段(煤温在70℃～150℃之间),煤氧复合物生成阶段(煤温在150℃～230℃之间),燃烧初始阶段(煤温达230℃时)和快速燃烧阶段(煤温大于230℃)。以上几个阶段都产生热量。另一
Most coal can be self-heating, which makes it difficult for coal mining and storage. In reality, it is impossible to eliminate self-heating of coal, however, spontaneous combustion mechanism and its influencing factors can be controlled effectively. Spontaneous combustion of coal can be divided into six stages. Including the water adsorption stage and five oxidation stages, namely: chemical adsorption stage (coal temperature up to 70 ℃), peroxide decomposition stage (coal temperature between 70 ℃ ~ 150 ℃), coal oxygen complex formation stage (coal Temperature is between 150 ℃ and 230 ℃, initial combustion stage (coal temperature is up to 230 ℃) and rapid combustion stage (coal temperature is above 230 ℃). The above stages generate heat. another