量热反应器传热因子连续估计方法研究进展  

Research Progress of Continuous Estimation Method for Heat Transfer Factor of Calorimeter Reactor

作　　者：许启跃 刘辉 叶树亮 XU Qi-yue;LIU Hui;YE Shu-liang(College of Metrology and Measurement Engineering,China Jiliang University,Hangzhou 310018,China)

机构地区：[1]中国计量大学计量测试工程学院,杭州310018

出　　处：《科学技术与工程》2022年第24期10355-10368,共14页Science Technology and Engineering

基　　金：国家自然科学基金(62103391)。

摘　　要：反应量热是化工行业中主要热分析技术之一,可以为反应过程安全评估提供大量有效的数据。反应热Q的测量过程中,反应器与夹套间传热因子UA(U为总传热系数、A为传热面积)的获取是一个关键步骤,目前通用的测量方法是在反应前后进行校准,但其结果不能代表反应过程中UA的动态变化。研究传热因子连续估计方法可以获得更加精确的量热数据,为反应器的开发及工艺优化提供更为安全有效的指导。对于实验室规模小型反应器,温度振荡量热法(temperature oscillation calorimetry, TOC)是一种连续估计UA和Q的有效方法,从研究历史、原理、参数计算、仿真研究及方法评价对TOC进行了详细总结,仿真结果阐明了该方法的先进性和适用性。对于体积较大的反应器,状态估计技术则是更为广泛使用的一类量热参数连续估计方法,综述了自适应量热法、级联量热法和扩展卡尔曼滤波(extended Kalman filter, EKF)3种状态估计技术,其中展现了EKF在不同体积反应器中连续估计UA和Q的模拟研究结果。最后,对比分析了温度振荡量热法和状态估计技术的优缺点、适用性等相关特性。在此基础上,对反应器量热技术进行了展望。Reaction calorimetry is one of the main thermal analysis techniques in chemical industry, which can provide a large number of effective data for safety assessment of reaction process. In the process of measuring reaction heat Q, it is crucial to obtain the heat transfer factor UA(U is the total heat transfer coefficient, A is the heat transfer area)between reactor and jacket, the current common measurement method is to calibrate before and after the reaction, but the results can not represent the dynamic change of UA in the reaction process. More accurate calorimetric data can be obtained by studying the continuous estimation method of heat transfer factor, which can provide safer and more effective guidance for the development of reactor and process optimization. Temperature oscillation calorimetry(TOC) is an effective method for continuous estimation of UA and Qin laboratory scale small reactors. TOC was summarized in detail from research history, principle, parameter calculation, simulation study and method evaluation, the advancement and applicability of this method were illustrated by the simulation results. For larger reactors, state estimation approaches is a more widely used method for continuous estimation of calorimetric parameters. Three state estimation techniques, namely adaptive calorimetry, cascade calorimetry and extended Kalman filter(EKF) were reviewed, and the simulation results of continuous estimation of UA and Qby EKF in reactors with different volumes are presented. Finally, the advantages, disadvantages and applicability of temperature oscillation calorimetry and state estimation approaches were compared and analyzed. On this basis, the technology of reactor calorimetry was prospected.

关 键 词：化学反应器 传热 反应热 温度振荡量热法(TOC) 参数估值 

分 类 号：TQ050.1[化学工程]