脉冲萃取塔径向扩散系数的测定方法  

METHOD TO DETERMINE RADIAL DISPERSION COEFFICIENT IN PULSED EXTRACTION COLUMN

作　　者：齐鸣斋[1] 

机构地区：[1]华东理工大学化工系,上海200237

出　　处：《化工学报》2000年第4期544-546,共3页CIESC Journal

摘　　要：Under the presupposition of plug flow with dispersion, the partial differential equation (s.eq.3) for two-dimension (radial and axial) dispersion in a pulsed extraction column is deduced. Under the condition of pulse input of tracer at the center of the column, the mathematical solution for eq.3 is found and given in this paper, that is,the mathematical model for two-dimension dispersion (s.eq.4). This mathematical model corresponds to the measured experimental data (s. Fig.3). With the Marquardt method for minimization of sum of square of errors between model and experimental data, the radial dispersion coefficient and axial dispersion coefficient could be determined at the same time.Under the presupposition of plug flow with dispersion, the partial differential equation (s.eq.3) for two-dimension (radial and axial) dispersion in a pulsed extraction column is deduced. Under the condition of pulse input of tracer at the center of the column, the mathematical solution for eq.3 is found and given in this paper, that is,the mathematical model for two-dimension dispersion (s.eq.4). This mathematical model corresponds to the measured experimental data (s. Fig.3). With the Marquardt method for minimization of sum of square of errors between model and experimental data, the radial dispersion coefficient and axial dispersion coefficient could be determined at the same time.

关 键 词：径向扩散 两维扩散 数学模型 脉冲萃取塔 

分 类 号：TQ053.502[化学工程] TQ028.32