Biodiesel refers to the addition of a methyl group to the aliphatic chains in vegetable oils or animal fats rendering them equivalent to the properties of dieseline. This is done by chemically reacting lipids (e.g., vegetable oil, Fatty acids, animal fat and used cooking oil) with an alcohol producing fatty acid esters.
The transesterification of the raw oil will be done by using the classical alkali-process. The catalyst solution will be prepared in a separate tank: Potassium hydroxide is fed from a big-bag into the reactor via dosing system. Then methanol is added. The catalyst KOH (Potassium Hydroxide) will be prepared as approx. 12.5%- methanolic solution. Methanol, the catalyst solution and the input oil will then be mixed in the transesterification reactor. The precipitation and separation of the phases bio diesel and glycerine takes places via gravity in the following separation tank.
The glycerine phase will be discharged from bottom of the separation tank.
Feed Stock Of Biodiesel
Acid Oil Feed Stock
Fatty Acid Feed Stock
Palm Stearine Feed Stock
|1.||DENSITY@15°C||860 – 900 Kg./m⊃3;.|
|2.||VISCOSITY@40°C||3.5 – 5.0 mm⊃2;/s.|
|3.||FLASH POINT||120°c Minimum.|
|4.||POUR POINT||Country specific.|
|5.||ALCOHOL CONTENT||0.2% Maximum.|
|6.||WATER||500 PPM Maximum.|
|7.||SULPHUR||10 PPM Maximum|
|8.||ESTER CONTENT||96.5% Minimum.|
|9.||ACID VALUE||0.5 Maximum.|
|10.||TOTAL GLYCEROL||0.25% Maximum.|
|11.||PHOSPHORUS||10 PPM Maximum.|
|12.||CETANE NUMBER||51 Minimum.|
|13.||CONTAMINANTS||24 PPM Maximum.|
Blends of biodiesel and conventional hydrocarbon-based diesel are products most commonly distributed for use in the retail diesel fuel marketplace. Much of the world uses a system known as the "B" factor to state the amount of biodiesel in any fuel mix: