Inline Measurement of the Residence Time Distribution in High-Pressure Extraction Columns

被引：0

作者：

Brockkoetter, Johannes ^{[1
]}

Welkner-Hoffmann, Andre ^{[1
]}

Jupke, Andreas ^{[1
]}

机构：

[1] Rhein Westfal TH Aachen, AVT Fluid Proc Engn, Forckenbeckstr 51, D-52074 Aachen, Germany

来源：

CHEMICAL ENGINEERING & TECHNOLOGY | 2020年 / 43卷 / 08期

关键词：

Axial dispersion; Countercurrent extraction; Design of experiments; Residence time distribution; Supercritical CO2 extraction; SUPERCRITICAL-FLUID EXTRACTION; AXIAL-DISPERSION COEFFICIENTS; PACKED-COLUMN; DIFFUSION-COEFFICIENTS; FERMENTATION BROTH; CARBON-DIOXIDE; CO2; EXTRACTION; DYNAMIC-MODEL; ETHANOL; FRACTIONATION;

D O I：

10.1002/ceat.202000172

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Axial backmixing lowers the efficiency of packed countercurrent high-pressure extraction columns. To quantify backmixing, a method of measuring the residence time distribution and calculating the axial dispersion coefficient in high-pressure extraction columns is introduced. Using a design of experiments, the effect of supercritical and liquid mass flow rates as well as the pressure at a constant temperature on the mean residence time and the axial dispersion coefficient are evaluated for the system water/supercritical CO2. The experimental data is correlated to the Reynolds and Schmidt number.

引用

页码：1659 / 1666

页数：8

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