1. State Key Lab of Mine Safty Technology, Fushun 113122, China:2. Shenyang Research Institute, China Coal Technodogy and Engineering Group, Fushun 113122, China

为建立煤粉碎过程中比表面积增长与CO生成量之间的定量关系,以阐释粉碎后煤体发生低温氧化对CO生成量的影响规律,利用全封闭式煤样粉碎测试仪、气相色谱仪和比表面积及孔径分析仪等仪器及曲线拟合方法,分别对无氧环境和有氧环境下煤粉碎过程中比表面积增长量与CO生成量的定量对应关系进行了试验研究,建立了有氧环境下煤比表面积增长与CO生成量之间定量关系的数学推导式,掌握了低温氧化对CO生成量的影响规律。研究结果表明:无氧环境下,煤比表面积与CO生成量无定量对应关系;有氧环境下,煤粉碎过程中较容易发生低温氧化而产生CO,并且煤比表面积与CO生成量的拟合曲线为一个二次抛物线,在一定范围内随着煤的比表面积增长,CO生成量逐渐增长并最终趋于稳定。

In order to set up the quantitative relationship between the specific surface area increased and the CO production value during the coal crushing process, and explain the influence law of the low temperature oxidation occurred from coal after the coal crushed to the CO production value.A full closed type coal sample crushing test instrument, gas chromatography, specific surface area and pore size ana-lyzer and curve fitting method were applied to the experiment study on the quantitative corresponding relationship between the specific sur-face area increased value and the CO production value during the coal crushing process under the oxygen free environment and aerobic en-vironment.A mathematical derivation of the quantitative relationship between the coal specific surface area increased and the CO produc-tion value under the aerobic environment was established and the influence law of the low temperature oxidation to the CO production value was mastered. The study results showed that under the oxygen free environment, there was no quantitative coresponding relation betweenthe coal specific surface area and CO production value. Under the aerobic environment, during the coal crushing process,a low tempera-ture oxidation would be occurred and then CO produced. The fitting curve of the coal specific surface area and CO production value would be a second parabola. Within a certain scope, with the coal specific surface area increased, CO production value would be steadily increased and would be in stable finally.

国家科技重大专项资助项目(2011ZX05037-003)；