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Research on the castor oil pressing extraction mechanism based on multi-physics coupling simulation
Can Shu1, Liu Yang1, Zilong Xu1
1College of Mechanical Engineering, Wuhan Polytechnic University, Wuhan, Hubei, China.
Journal of Food Science
|August 28, 2024
Summary
This study details castor oil extraction during pressing, revealing two key stages influenced by porosity and pressure. Optimized extraction depends on factors like seed thickness and loading speed.
Area of Science:
- Agricultural Engineering
- Biomaterials Science
- Chemical Engineering
Background:
- Castor oil's diverse applications necessitate understanding its pressing extraction mechanism.
- Optimizing oil yield requires detailed knowledge of the physical processes involved in seed compression.
Purpose of the Study:
- To investigate the mechanism of castor oil extraction during the pressing process.
- To analyze the influence of key parameters on oil extraction efficiency.
Main Methods:
- Development of a uniaxial compression device with in situ observation.
- Experimental investigation of pressure, loading speed, and creep time effects.
- Establishment and verification of a multi-physics finite element model for castor oil pressing.
Main Results:
- The oil extraction process exhibits two stages characterized by distinct Darcy's speed behaviors related to porosity and pressure.
- Porosity dominates Darcy's speed in the initial stage; pressure becomes dominant as porosity decreases.
- Optimal seed thickness for Darcy's speed was identified; increased loading speed and decreased creep time enhance Darcy's speed.
Conclusions:
- The study provides a theoretical and practical framework for optimizing castor oil extraction through pressing.
- Understanding the interplay between porosity, pressure, and extraction dynamics is crucial for efficient oil recovery.
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