Corn Germ Pressing
The purpose of preparation is to extract a portion of oil by mechanical pressing while providing pressing cakes for extraction plant. Main processes include: Seed Cleaning & Weighing, Cracking, Softening, Flaking, Pressing, Oil Residue Separation.
1. Cleaning & Weighing Section
2. Cracking Section
The purpose of cracking is to crack corn germ into small particles prior to softening and flaking, in order to improve the quality and capacity of the flakes.
3. Softening Section
Horizontal drum rotary cooker is designed to adjust temperature and moisture of corn germ prior to flaking, to improve oil yield greatly.
4. Flaking Section
The purpose of flaking is to flake the softened corn germ into thin flakes (from 0.3 to 0.35mm) for the subsequent oil extraction through mechanical pressing. In addition, flakes thickness can be adjusted through the roll pressure adjustment device.
5. Pressing Section
Corn germ is a kind of high oil-containing oilseed. Generally, it is necessary to extract a portion of oil by mechanical pressing prior to the subsequent process. Expeller with auxiliary cooker ensures material reach proper temperature and moisture. Pressing cakes containing residual oil from 14% to 18% is then treated by solvent extraction while crude oil is to be filtered.
6. Oil Residue Separation Section
Due to the high content of residue in crude oil, it is necessary to separate oil residue by oil drag conveyor firstly, crude oil then enters to settling tank for further separation. The collected residue is returned to the pressing section while crude oil from settling tank is pumped to frame filter or leaf filter for further removing impurities.
7. Cooling Section
Cooling drag conveyor is designed to cool down pre-pressing cakes with high efficiency, then cakes is conveyed to the solvent extraction plant.
- Oils & Fats
- Starch & Derivatives
- Meal Fermentation
- Evaporation & Crystallization