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》 2009年第6期28-32,共5页

摘　　要： 分别用2种内径、4种长度的黄铜圆管作为正极,2种直径的电晕线作为负极构成电晕放电反应器,分解去除低体积分数甲醇气体。去除率随电流密度的增加而上升,随入口甲醇体积分数的增高和气体流速的增大而降低。考察反应和传质对过程的共同影响,建立了描述反应器内甲醇和臭氧体积分数变化的数学模型。模型在多种反应器长度和内径、电晕线直径等装置条件,以及多种电流密度、入口甲醇体积分数、气体流速等操作条件下,预测结果的平均相对误差小于6.4%。本研究量化了甲醇电晕放电分解的过程变化,可作为反应器的设计和运行控制的依据。 The low volume fraction of gaseous methanol was decomposed via corona discharge reactors with brass tubes in two different inside diameters and four different lengths as anodes and piano wires in two diameters as cathodes. The removal rates increased with the raise of the ampere density and decreased with the raise of the volume fraction of methanol and the gas velocity. Considering that the whole process is dependent on both the reaction and the mass transfer, the simulation models for describing the volume fraction changes of methanol and ozone in the reactor were established. Under the conditions of different lengths and inside diameters of the reactor, piano wires diameters, and different ampere density, initial volume fraction of methanol and gas velocity, the models prediction for the reaction resulted in an average relative error of less than 6.4%. This research quantified the process change of methanol decompositions in corona discharge reactors, and can be used as reference of design, operation and control of reactors.

关 键 词： 甲醇 电晕放电 分解特性 模型 模拟

领　　域： [理学] [理学] [环境科学与工程]