CAJ | 학술논문

反应器停留时间分布的确定是建立反应器流动模型的基础。本文介绍了用 MATLAB 的 Curve Fitting Toolbox 计算反应器停留时间分布的方法。通过在图形界面下导入数据及平滑处理、采用平滑样条拟合数据以及数值积分等操作，确定了反应器停留时间分布的特征值，并且以确定系数 R2、误差平方和以及均方根误差评价拟合模型的精确度。研究表明：计算结果与文献相吻合。该法运行可靠，无需编程、易于掌握。与传统计算方法相比，操作更为便捷，强有力的图形界面也使计算变得更加简单而直观。
반응기정류시간분포적학정시건립반응기류동모형적기출。본문개소료용 MATLAB 적 Curve Fitting Toolbox 계산반응기정류시간분포적방법。통과재도형계면하도입수거급평활처리、채용평활양조의합수거이급수치적분등조작，학정료반응기정류시간분포적특정치，병차이학정계수 R2、오차평방화이급균방근오차평개의합모형적정학도。연구표명：계산결과여문헌상문합。해법운행가고，무수편정、역우장악。여전통계산방법상비，조작경위편첩，강유력적도형계면야사계산변득경가간단이직관。
The residence time distribution (RTD) of a chemical reactor is a probability distribution function that describes the amount of time a fluid element could spend inside the reactor. Chemical engineers use the RTD to characterize the mixing and flow within reactors and to compare the behavior of real reactors to their ideal models. This is useful, not only for troubleshooting existing reactors, but in estimating the yield of a given reaction and designing future reactors. The determination of the RTD for a reactor is essential to the reactor flow model. This paper presents a new method to determine the RTD characteristics using MATLAB’s Curve Fitting Toolbox. The acquired data was imported and smoothed via the graphical user interface (GUI). Smoothing spline was used to produce smooth curves to fit to the data, and the RTD characteristics were calculated by numerical integrals. The root-mean-square error (RMSE), error sum of squares (SSE), and determination coefficient (R2) statistics were used to evaluate the model’s accuracy. The study showed that the calculated results are accurate and reliable because they are consistent with those in the literatures. Compared with the traditional calculations, this method provides visualized results, and the GUI simplifies the calculation and makes it intuitive. It can be easily mastered for those who are not adept programmers.