Simulation of supercritical CO<sub>2</sub> extraction of clove oil by two-step diffusion model

LIU Naihui; LI Shufen; GUAN Wenqiang

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Simulation of supercritical CO₂ extraction of clove oil by two-step diffusion model

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- Simulation of supercritical CO₂ extraction of clove oil by two-step diffusion model
- CIESC Journal Issue 7, Pages: 1933-1937(2011)
- 作者机构：
  
  1. 天津大学化工学院，教育部绿色合成与转化重点实验室
  2. 南开大学化学学院
  3. 国家农产品保鲜工程技术研究中心
- 作者简介：
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- Online First：05 July 2011，
  
  Published：05 July 2011
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LIU Naihui, LI Shufen, GUAN Wenqiang. Simulation of supercritical CO₂ extraction of clove oil by two-step diffusion model[J]. CIESC Journal, 2011, (7): 1933-1937.
DOI：

LIU Naihui, LI Shufen, GUAN Wenqiang. Simulation of supercritical CO₂ extraction of clove oil by two-step diffusion model[J]. CIESC Journal, 2011, (7): 1933-1937. DOI：

摘要

基于扩散模型方程和集总参数模型方程，首次建立了具有3个可调参数的两步扩散模型方程。该模型同时考虑固体颗粒内扩散阻力与内壁的阻力，能较好地描述超临界流体萃取过程。用两步扩散模型方程模拟了超临界CO2萃取丁香油的动态过程，在实验温度与压力范围内模型计算值与实验数据的平均相对误差AARD在2.33%～19.48%之间，所有实验点的AARD为8.09%。而用扩散模型方程和集总参数模型方程模拟，所有实验点的AARD分别为17.51%和8.13%，表明两步扩散模型对于超临界CO2萃取丁香油的传质过程的模拟效果优于扩散模型方程和集总参数模型方程。

Abstract

A new mathematical model，the two-step diffusion model with three adjustable parameters，was developed based on the diffusion model and the lumped parameter model. Both internal diffusion resistance and solid solute internal wall resistance were considered to make the model a good description to supercritical fluid extraction (SFE) process. The supercritical CO2 extraction of clove oil is simulated. The comparison with the experimental data indicates that the values of AARD are between 2.33% and 19.48% under different experimental conditions，and the overall value of AARD is 8.09%. The experimental data for clove oil are also used to compare with the simulation by the diffusion model and the lumped model，and the overall values of AARD are 17.51%，8.13%，respectively，so the two-step diffusion model is better for simulating the process of supercritical CO2 extraction of clove oil.

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Simulation of supercritical CO2 extraction of clove oil by two-step diffusion model

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摘要

Abstract

关键词

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references

Simulation of supercritical CO₂ extraction of clove oil by two-step diffusion model