The press area is designed to squeeze the oil and prepare the cake for extraction.
The technology uses highly efficient equipment that meets modern requirements, both in terms of material performance, operating conditions, and manufacturing technology.
The raw materials for the pressing area are oilseeds. The quantity and quality of the obtained oil depends on the quality of the input raw material. Given the different properties of oilseeds, the specialists of D.ENERGY optimize the work of the technological line taking into account the specific type of raw materials.
Technological processes are divided into:
- disposable and double, depending on the number of stages of pressing
- cold or hot pressing, depending on the temperature at which the process takes place.
In the case of double pressing, the first press is called a "pre-press" or "forpress" press, and the second is called a "final press". Double-extraction technologies are used to obtain the maximum amount of oil and are used for raw materials with high oil content, when the oil content exceeds 30% (oilseed rape, sunflower, etc.).
When pressing the seeds in a cold way, the temperature of the seeds entering the press corresponds to the ambient temperature, and the temperature of the oil usually does not exceed 50 ° C. When hot pressing the seeds are preheated to a temperature of about 100 ° C in roasters. Heating the seeds simplifies the extraction of oil, so in the technology of hot pressing oil yield is greater.