论文部分内容阅读
在进行煤层注水或巷道喷雾时,若改变水溶液性质使之能够吸收甲烷,则可有效降低煤层瓦斯含量,实现煤层消突。研制加工了瓦斯溶解实验装置,选择增溶能力较强的不同类型表面活性剂,进行了不同温度、体积分数和压力条件下的甲烷溶解实验测试。结果表明,甲烷溶解度均随体积分数的增大呈对数增大,随温度的升高呈逆指数降低,随压力的升高呈对数增加;加入聚丙二醇甲烷溶解度最大,常温常压下,体积分数为10%的溶解度为24.66 mL/100 mL溶液,是纯水的7.45倍,4种表面活性剂增溶能力的顺序为:聚丙二醇>聚乙烯醇>十二烷基硫酸钠>F-500。根据实验结果建立了不同条件下甲烷溶解度的计算方程,估算值和实验值吻合较好,为矿井水力化措施提高瓦斯治理效果提供了依据。
In the process of coal seam water injection or roadway spray, changing the nature of the aqueous solution to absorb methane can effectively reduce the gas content in the coal seam and eliminate the coal seam. The experimental apparatus for gas dissolving was developed and the different types of surfactants with strong solubilization ability were selected. The methane dissolution experiment under different temperature, volume fraction and pressure was carried out. The results show that the solubility of methane increases logarithmically with the increase of volume fraction, decreases inversely exponentially with increasing temperature, and increases logarithmically with the increase of pressure. With the addition of polypropylene glycol, the solubility of methane is the highest, under normal temperature and pressure, The volume fraction of 10% of the solubility of 24.66 mL / 100 mL solution, 7.45 times that of pure water, four surfactants solubilization order: polypropylene glycol> polyvinyl alcohol> sodium lauryl sulfate> F- 500. The calculation equation of methane solubility under different conditions is established based on the experimental results. The calculated values are in good agreement with the experimental values, which provides a basis for mine hydraulics measures to improve the gas treatment effect.