氧气在醋酸水溶液中的Henry系数计算模型  

Calculation model of Henry′s constants of oxygen in aqueous acetic acid

作　　者：丁干红[1] 肖咸江[1] 李希[1] 

机构地区：[1]浙江大学材料与化学工程学院,浙江杭州310027

出　　处：《化学工程》2007年第6期37-40,共4页Chemical Engineering(China)

摘　　要：高温下氧气在醋酸水溶液中的Henry系数目前还没有合适的计算方法。胡英等(1985)提出的扩展定标粒子理论虽然可在广泛的温度范围内适用于多种体系,但目前还没有将这一模型应用于有机酸溶液的报道。文中对扩展定标粒子理论进行了二点改进,一是考虑了热力学参数对温度的依赖关系;二是针对有机酸溶液的特点对氧气的有效大小参数进行了调整,建立了氧气在醋酸水溶液中的Henry系数计算模型。模型参数由文献实验数据回归得到,模型计算结果与文献报道值基本一致,所建立的模型可用于关联和预测不同温度(273—500 K)、不同醋酸摩尔分数(0—100%)下氧气在醋酸水溶液中的Henry系数。Proper calculation model for Henry＇s constants of oxygen in aqueous acetic acid at high temperature is not available at present. Hu＇s extended sealed particle theory （1985） is applicable for various systems under extensive temperature range, but no report on applying this theory to organic acid system is available for the moment. Based on the extended scaled particle theory, this model was modified in two aspects to build a Henry＇s constant calculation model for oxygen in aqueous acetic acid： one was about considering the dependence of thermodynamic parameters on temperature; the other was about adjusting the effective size parameter of oxygen according to the feature of organic solution. The parameters of this model were regressed from the literature data, and the Henry＇s constants of oxygen in aqueous acetic acid from the published experimental data were consistent with the Henry＇s constants estimated by the developed calculation model. The method can be used to predict the Henry＇s constants of oxygen in aqueous acetic acid at different temperatures （273-500 K） and in different acetic acid mass concentration （0-100%）.

关 键 词：氧气 醋酸 Henry系数 

分 类 号：TQ013.1[化学工程]