• Why is prepress solvent extraction better than sunflower meal?
  • Because sunflower oil has a substantially higher economic value than sunflower meal, process economics improve significantly as the oil recovery yield increases. Therefore, prepress solvent extraction, with the highest oil recovery yield, is the process method utilized today for the majority of the sunflower seed that is crushed globally.
  • What is a prepress solvent extraction method in a sunflower crushing plant?
  • In a typical sunflower crushing plant using the prepress solvent extraction method, the initial steps of seed pre-cleaning and seed drying are located in the seed receiving section of the facility, prior to seed storage.
  • How is sunflower crushed for oil recovery?
  • Sunflower is crushed for oil recovery via one of two process methods, hard pressing or prepress solvent extraction. Hard pressing relies upon exerting high pressure on the prepared seed to separate oil from the solids fraction, historically recovering about 25% oil from the seed.
  • How is sunflower meal extracted from solvent extraction process?
  • Therefore, the sunflower meal from the solvent extraction process is generally screened. The small particles passing through the screen are separated from the large granules and lumps, which pass over the screen and go to a hammer mill. The hammer mill reduces the lumps and large granules to a uniform, fine granule size.
  • What is prepress solvent extraction?
  • Prepress solvent extraction relies on exerting medium pressure on the prepared seed to separate the majority of the oil, followed by solvent extraction to separate additional oil from the solids fraction, recovering over 40% oil from the seed in modern crushing plants.
  • Where are seed precleaning and seed drying performed in a sunflower crushing plant?
  • In a typical sunflower crushing plant using the prepress solvent extraction method, the initial steps of seed precleaning and seed drying are located in the seed receiving section of the facility, prior to seed storage.