On March 11, 2024, a Polish company ordered Huatai Group’s 100TPD sunflower seed cake extraction project to start shipping.
When it comes to sunflower seeds, I believe everyone will be familiar with it. Sunflower seeds are the fruit of sunflower. Sunflower is a plant belonging to the genus Helianthus in the Asteraceae family. Sunflowers can be divided into two categories according to their uses, namely oil sunflowers (oil sunflowers) and sunflowers. Edible sunflower (European sunflower). The oil extracted from sunflower seeds can be squeezed into high-grade edible sunflower oil with low cholesterol. Because it contains part of “linoleic acid (ω-6 fatty acid)”, it has the effect of lowering blood cholesterol, preventing atherosclerosis and cardiovascular disease. effect.
The extraction method of the sunflower seed cake leaching project is mainly based on the principle of oil leaching. This is a method that uses solid-liquid extraction technology to contact the oil in the sunflower seed cake through a specific organic solvent to extract the oil from the cake. . Specific steps are as follows:
1. Pretreatment: Sunflower seed cake needs to be pretreated before leaching, including crushing, screening, etc., to increase its contact area with the solvent and improve leaching efficiency.
2. Extraction: The pretreated sunflower seed cake is sent to the leaching device and fully mixed with a specific organic solvent. Through the mutual solubility principle of solvent and oil, the oil is extracted from the sunflower seed cake to form a mixed oil.
3. Desolvation and drying of wet meal: After leaching, the wet meal discharged from the leacher contains a certain amount of solvent. In order to recover these solvents and obtain better quality meal, the wet meal is heated to evaporate the solvent.
4. Evaporation and stripping of mixed oil: The solvent in the mixed oil needs to be removed through the process of evaporation and stripping. Evaporation uses heat to vaporize the solvent and reduce the solvent content in the grease. Stripping uses direct steam and indirect steam heating to further evaporate the solvent in the mixed oil.
5. Solvent vapor condensation recovery: The solvent vapor generated during the evaporation and stripping process will pass through the condensation recovery system and condense into liquid solvent to realize solvent recycling.