Multi-Feedstock Bio-Diesel Plant
The multi-feedstock bio-diesel plant is designed for continual running (330 running days). Standard plant dimensions are 60,000 yato or 250,000 yato. The multi-feedstock bio-diesel plant makes it possible to process not only unpurified rapeseed oil, but a diverse range of spent cooking oils, spent cooking fat, and other vegetable oils (cottonseed oil, corn oil, fatty acids, etc.) of varying quality (FFA content). The mutli-feedstock bio-diesel plant has significant advantages compared to conventional plants as a result of this variety in suitable raw materials.
Because bio-diesel technology utilises a closed process, the only product streams which are generated are bio-diesel, potassium sulphate (a high-grade fertiliser), technical grade glycerine and fluid rich in lecithin (when using certain fresh vegetable oils). No waste water is produced during the bio-diesel process (transesterification), so there is no need for a waste water purification unit.
The glycerine that is produced is technical grade with a glycerine content of more than 80%, meaning that the production of more highly concentrated glycerine is avoided, while the product water and the minimal quantity of fresh water introduced in the bio-diesel process via the glycerine can be re-used.
Water is added only during the pre-purification of impure raw materials (e.g. spent cooking oils and fats). Solid and liquid impurities as well as vegetable oil residues are then captured by the fluid rich in lecithin, which in turn can be used to fuel a bio-gas plant thanks to the resulting high percentage of organic content.
The bio-diesel plant is made up of the following main components:
- Tanks for storing raw materials and finished products
- Pre-purification and raw oil dehydration
- Glycerine processing
- Methanol recovery
- Resource provision