真空紫外光降解瓦斯反应动力学规律

发布时间：2018-06-28 11:22

本文选题：安全工程 + 瓦斯　；参考：《安全与环境学报》2015年05期

【摘要】：为了研究真空紫外光降解瓦斯过程的反应动力学规律,在自制的真空石英光化学反应器中以含甲烷标准气体模拟矿井瓦斯,运用Langmuir-Hinshelwood(L-H)拟一级反应动力学模型对不同光照强度、氧气体积分数、甲烷初始体积分数和水分子体积分数下瓦斯(甲烷)的降解过程进行拟合。结果表明:真空紫外光降解瓦斯反应动力学规律符合一级反应动力学特性;光照强度、甲烷初始体积分数、氧气体积分数和水分子体积分数是影响真空紫外光降解瓦斯的主要因素;瓦斯(甲烷)降解的反应速率随光照强度和氧气体积分数增大而增大,随甲烷初始体积分数增大而减小,随水分子体积分数增大而先增大后减小。
[Abstract]:In order to study the kinetics of vacuum photodegradation of gas, methane containing standard gas was used to simulate mine gas in a vacuum quartz photochemical reactor. Langmuir-Hinshelwood (L-H) pseudo-first-order reaction kinetic model was used to study different light intensity. The gas (methane) degradation process was fitted under the oxygen volume fraction, the initial volume fraction of methane and the volume fraction of water molecule. The results show that the kinetics of gas degradation in vacuum ultraviolet is in accordance with the first-order reaction kinetics, the light intensity, the initial volume fraction of methane, and so on. Oxygen volume fraction and water molecular volume fraction are the main factors affecting the degradation of gas by vacuum ultraviolet light, and the reaction rate of methane degradation increases with the increase of light intensity and oxygen volume fraction. The initial volume fraction of methane decreases with the increase of the initial volume fraction of methane, and then decreases with the increase of the volume fraction of water molecule.
【作者单位】：河南省瓦斯地质与瓦斯治理重点实验室——省部共建国家重点实验室培育基地(河南理工大学);
【基金】：国家自然科学基金项目(51074067) 河南省教育厅科学技术研究重点项目(14A440007) 河南省瓦斯地质与瓦斯治理重点实验室开放基金项目(WS2012A08)
【分类号】：TD712

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