基于鼓泡反应器的NO液相吸收模型

NO Liquid Absorption Model Based on Bubbling Reactor

根据质量守恒和传质理论,采用双微元分析方法建立微分方程,导出了基于鼓泡反应器的NO等温吸收模型。模型计算值和实验值吻合较好,表明该模型能较准确地描述NO的液相吸收过程。实验以醋酸/醋酸钠缓冲溶液和亚氯酸钠溶液为例研究了溶液性质和化学反应对NO液相吸收的影响特性。醋酸/醋酸钠的加入通过改变溶液性质明显地促进NO的液相吸收。对伴有化学反应的NO吸收,可通过增强因子来表征化学反应对NO吸收的增强作用。增强因子可看作液相化学吸收剂活度的函数。亚氯酸钠溶液对NO氧化吸收时的增强因子与亚氯酸钠浓度成线性关系。

The differential equations and isothermal absorption model for NO liquid absorption based on bubbling reactor are established according to double infinitesimal unit analysis method,as well as the mass conservation and mass-transfer theory.The inosculation between model calculation results and experimental data is good,which proves the NO liquid absorption process could be described accurately by the model.The effects of solution properties and chemical reactions on NO absorption are studied through the instances of acetic acid and acetic sodium buffer solution/sodium chlorite solution for NO absorption.The NO absorption is significantly promoted by adding acetic acid and acetic sodium into solution.For NO absorption with chemical reactions,the enhancing function of chemical reactions is characterized by enhancement factor,which is expressed as a function of absorbent activity.And it is linear to the concentration of sodium chlorite for NO oxidative absorption with sodium chlorite solution.