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.
出处
《合成纤维工业》
CAS
CSCD
北大核心
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)
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
purified terephthalic acid
para-xylene
4-carboxybenzaldehyde
mathematical model, soft-measurement
