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考查了光照强度、氧气含量、水分子含量、甲烷初始体积分数对真空紫外光降解瓦斯效应的影响及反应动力学.结果表明:当φ(O2)0为21%,φ(H2O)0为0.3%,光照强度为25W,光照150min后,甲烷初始体积分数为3.5%的瓦斯气体其降解率达87.7%.采用拟一级反应动力学模拟羟基自由基和真空紫外光协同降解瓦斯机理,分析可知,瓦斯降解率实验值与模型预测值拟合程度高,拟合的相关系数在0.98以上.
The effects of light intensity, oxygen content, water molecule content and methane initial volume fraction on the gas effect induced by vacuum ultraviolet light degradation and reaction kinetics were investigated. The results showed that when φ (O2) 0 was 21% and φ (H2O) 0 was 0.3 %, Light intensity 25W, light 150min, methane initial volume fraction of 3.5% methane gas degradation rate of 87.7% .With quasi-first-order reaction kinetics simulate hydroxyl radical and vacuum ultraviolet light synergistic degradation gas mechanism analysis shows The experimental data of gas degradation rate and model predictive value fit well, and the correlation coefficient of fitting is above 0.98.