Oilseeds preparation & pressing
The purpose of seed preparation is to modify the seed into a form that facilitates fast and efficient oil extraction through mechanical pressing and solvent extraction. The process involves multiple steps designed to break down the seed’s cell walls, thus releasing the oil and optimising the oil yield from the seed.
How does it work?
Depending on the seed type or quality, the following processes are necessary for optimal extraction and minimal overall operational expenses (OPEX):
- Seed conditioning, to adjust the moisture and temperature for proper downstream processing
- Cracking, to reduce the particle size of the seeds
- Seed dehulling, to increase the protein content of the de-oiled meal
- Cooking, to reduce the viscosity of the oil and adjust the moisture content (when softseed are processing)
- Flaking, to rupture the cell structure of the broken seeds
- Pre-pressing, to recover a high proportion of the oil in an energy-efficient way
- Expanding (sometimes), to enhance extraction parameters
Full process
The key to the separation process is the proper mechanical and thermal preparation of the material before the separation of the oils. Desmet excels in all aspects of preparation, pre-pressing and solvent extraction to bring complete solutions to the oilseed industry.
Desmet’s pre-pressing technology is built on the expertise of the renowned Rosedowns brand, known for its world-class screw presses. Founded in 1777 in Kingston Upon Hull, England, Rosedowns is a global leader in the design and manufacture of high-quality screw presses and a trusted provider of replacement parts to ensure optimal yields year-round.
Advantages
Our method for extracting oils and fats after seed preparation, whether through pressing or solvent extraction, offers numerous advantages.
OPEX
Our oilseeds preparation and pressing process minimizes overall operational expenses.
Downstream
The full process is specially developed to optimize performance in the downstream process.
High protein
With our process we address new market trends and applications with high protein concentrate.
Raw materials
Desmet is a world leader in separation of oils and fats from oilseeds . Separation can take place by mechanical pressure in a screw press, by solvent extraction or by a combination of screw press plus solvent extraction. The specific process depends on the raw material, the desired final product characteristics and its intended application.
Rapeseed
Soybeans
Sunflower
Key proprietary equipment
The key proprietary equipment for oilseeds preparation and pre-pressing includes conditioners, cookers, and screw presses. These advanced machines ensure optimal oil extraction and processing efficiency, tailored to meet specific product requirements and application needs, ensuring high-quality output.
Conditioners
Sterling Series presses
Rotary cookers
Our services
With a focus on cutting-edge technology, high-quality components, and comprehensive on-site support, our service teams ensure optimized plant performance and minimized operational disruptions.