How to extract oil from oleaginous seeds without solvent?
Explore all metrics Abstract The oil extraction by mechanical pressing is the most common method for continuous treatment of oleaginous seeds without solvent. Different types of presses can be used depending on the purpose (expeller, expander, and twin-screw extruder) and on the capacity range (3 kg h1to 150 t day1).
What is industrial pressing of oilseeds?
Industrial pressing of oilseeds is realized using continuous screw presses. The presses are fed with crude or pre-treated seeds. Types of pre-treatments (thermal pre-treatment, size reduction, mechanical sieving, etc.) differ for various seed species (Carr 1997). Each type of seed pre-treatment provides its own advantages.
What is a screw press expeller?
The expellers (named after the first screw press founded by Anderson in 1902) are the screw presses most often encountered in the industry. They consist of a screw rotating in a horizontal perforated barrel formed by regularly spaced metal bars (this space can vary from 0.5 to 0.1 mm); the oil flows along the barrel.
How does seed production affect oil extraction process?
The increase in the quantity of seed being slightly lower than the increase in oil production, it demonstrates an improvement of oil extraction processes. Generally, the oil extraction is based on two main steps: pressing (solid¨Cliquid expression) and solvent extraction.
