PTA生产中4-CBA浓度的影响因素分析和软测量  

Influential factors analysis and soft-measurement of 4-CBA concentration during PTA production

作　　者：王丽军[1] 张宏建[1] 李希[2] 

机构地区：[1]浙江大学信息科学与工程学院 [2]浙江大学材料与化工学院,浙江杭州310027

出　　处：《合成纤维工业》2005年第6期1-4,共4页China Synthetic Fiber Industry

基　　金：国家自然科学基金(20076039)

摘　　要：根据济南化纤公司75 kt／a精对苯二甲酸(PTA)的生产工艺，建立了对二甲苯(PX)氧化反应器的数学模型，模型能够较好地预测不同工艺条件下的对羧基苯甲醛(4-CBA)浓度。在此模型基础上，对现有工艺过程进行了数值模拟，结果发现，4-CBA浓度与尾气CO_2浓度和单位液相体积耗氧速率具有很强的相关性。通过数据回归得到了4-CBA软测量模型。According to 75 kt/a purified terephthalic acid（PTA） process of Jinan Chemical Fiber Co. , a mathematical model of p-xylene oxidation reactor was presented, which was proved to be qualified to predict 4-carboxybenzaldehyde （4-CBA） content in most cases, Based on the model, the simulation was carried out for the given technological process. The results indicated that there existed a strong correlation among 4-CBA content and off-gas CO2 concentration and oxygen consumption rate, A soft-measurement model for 4-CBA concentration was obtained by data regression, The soft measurement results almost coincided with the industrial field data.

关 键 词：精对苯二甲酸 对二甲苯 对羧基苯甲醛 数学模型 软测量 

分 类 号：TQ245.1[化学工程—有机化工]