超临界水氧化甲醇的动力学模型

Kinetic Modeling for the Oxidation of Methanol in Supercritical Water

为了研究超临界水氧化有机污染物的反应动力学,采用甲醇作为超临界水氧化的研究对象,根据超临界水氧化甲醇的反应机理,运用质量守恒原理和似稳态假定,建立超临界水氧化甲醇的动力学模型。用实验数据关联动力学模型,得出超临界水氧化甲醇的反应速率常数,再用建立的动力学模型计算出甲醇的转化率和甲醛、CO和CO2的产率,并与实验值进行比较。结果表明,计算值与实验数据能较好地吻合。

For studying the kinetics of the oxidation of organic pollutant in supercritical water oxidation, the methanol WaS chosen as the object of the study. Based on the reaction mechanism proposed by Brock et al., a kinetic model was put forward by the application of mass-balance and the hypothesis of quasi-steady-state. The experimental data were used to correlate the kinetic model and reaction rate constants were obtained. The methanol conversion and the yields of formaldehyde, CO, and CO2 were calculated using the kinetic model and were compared with experimental data. The results show that the calculations are in agreement with measurements.