作　　者： ; ; ; ;

机构地区： 广州大学环境科学与工程学院

出　　处： 《化学工程》 2010年第5期51-54,共4页

摘　　要： 基于反应和传质对过程的共同影响,建立电晕放电反应器内乙醛、臭氧和甲醇浓度变化的数学模型。在不同的反应器长度和内径、电晕线直径,以及电流密度、入口乙醛浓度、气体流速等条件下,考察乙醛电晕放电分解过程中反应物、生成物和中间产物的物质移动,量化了模型参数。模型反映了乙醛去除率随电流密度的增加而上升、随入口乙醛浓度的增高和气体流速的增大而降低的变化倾向,预测结果的平均相对误差小于7.2%,可为挥发性有机化合物的电晕放电分解技术提供理论参考和工程设计依据。 Based on the co-influence of reactions and transfers on the processes,the mathematical models were built to describe the concentration changes of acetaldehyde,ozone and methanol in corona discharge reactor. With different length and inside diameter of the reactor,piano wire diameter,and different ampere density,initial acetaldehyde concentration and gas velocity,the substance movements of reactants,resultants and intermediate products produced in the corona discharge process were studied,and the model parameters were quantified. The models reflect the change trends that the acetaldehyde removal rates increase with the raise of the ampere density and decrease with the raise of the thickness of acetaldehyde and the gas velocity. The average relative error of the model results is less than 7.2%. Therefore,such models can provide theoretical reference and engineering design considerations for corona discharge decomposition techniques of volatile organic compounds.

关 键 词： 乙醛 电晕放电 分解 模型 模拟

领　　域： [理学] [理学] [环境科学与工程]