流态试验设计及分析方法

化学反应器在化学工业设备系统中占有极为重要的地位,对其水力特性和混合条件进行研究至关重要;同时停留时间分布(RTD)分析为评估反应器流态提供了一种极为有用的分析工具。文中详细描述了基于示踪-应答技术的流态试验设计方法,包括示踪剂的选取原则、试验的方法及试验的操作要求,为流态试验提供了指导规范。探讨了进行数据处理中的注意事项及为避免误差应采取的措施。通过分析发现采用不同的思想计算平均停留时间分别代表的意义及其关系。由于不同的反应器流态可能得到相同的RTD曲线,因而并不是每一个RTD曲线只对应一个特定的反应器类型或者状态。以RTD理论为基础,确立了各种流态所对应的不同停留时间分布,为比较分析流态试验的曲线提供依据。

Design of hydrodynamic characteristics experiment and analysis method

Chemical reactor plays a very important role in the equipment system of chemical industry,and it is extremely important to the study of hydrodynamic characteristic and mixing condition for better comprehension of it and enhancing the efficiency of volume.Moreover,the analysis of residence time distribution(RTD) provides a very useful tool for evaluating the hydrodynamic characteristic of reactor.The results are helpful in its design and operation.Based on trace-answer technology,the design methods of hydrodynamic characteristics experiment were described,including the rule of choosing tracer,the methods of experiment and the requirements of operation,and providing instruction for hydrodynamic characteristics.Besides,the matters needing attention and the measures to avoid errors during data processing were discussed.By different methods for calculating the mean residence time(MRT),the meaning and relationship of which were discovered.Different reactors might have the same RTD curve.Therefore,a RTD curve doesn′t correspond to only one kind of reactor or hydrodynamic characteristics.Basing on RTD theory,various hydrodynamic characteristics corresponding to different residence time distribution were determined,thus providing basis for analyzing curves of experiment.