均四甲苯氧化制二酐宏观动力学分析

Investigation of the kinetic for oxidation of durene to pyromellitic dianhydride

为了提高均四甲苯氧化制均苯四甲酸二酐的收率,以某二酐生产企业生产的高效钒钛催化剂,在固定床反应器中对均四甲苯气相氧化制均苯四甲酸二酐反应体系的动力学进行了研究。首先提出了可能的反应网络,然后设计相关动力学测试实验,建立均四甲苯氧化反应的幂函数宏观动力学模型。进一步的实验和统计分析表明,模型计算值与实验值吻合较好。宏观动力学方程的建立为后续将其用于相应的固定床反应器模拟提供了基础保证。

In order to improve the yield of pyromellitie dianhydride （PMDA）through the oxidation of durene, the maerodynanlies of the PMDA production reaction via durene oxidation were studied based on the existing industrial vanadium titanium catalyst in fixed bed reactor. This paper firstly put forward the possible reaction network, seneondly designed the relevant @namies test experiment, then established the maerodynanlies model in power function equation of oxidation of durene. The further experiment and the analy- sis of the statistical tests showed that the calculated value agreed well with the experimental values. The establishment of maerody- namies equation provided the basic guarantee for the subsequent sinmlation of the corresponding fixed bed reactor.