High Shear Mixer solutions for Biodiesel
Production in a continuous process
In classical plants, fats are transesterified in a two-stage batch process and is normally done in two subsequent batch containers.
Using a special IKA® inline dispersing machine of the type DISPAX-REACTOR®, it’s now possible to carry out the transesterification in a continuous process in one stage where raw materials are fed continuously.
The transesterification reaction takes place in the high-energetic shear zone of the dispersing machine. The raw materials are dissolved to finest droplets, by which the specific surface is enormously enlarged and the mass transfer is decisively intensified. This noticeably accelerates the transesterification reaction and maximizes the output. The complete transesterification can be carried out in one stage and fully automatic.
- lower running costs
- lower investment expenditure
- clearly reduced space requirement
- more flexible production
Preparation of Edible Oils
Preparation in an inline process
Vegetable oils are processed in following steps:
Part of the phosphatides in the raw oil are hydrogenizable with water and can thus easily be separated. The remaining non-hydrogenizable phosphatides can be separated by adding acid. The untreated oil is heated up to 60°C – 70°C and thoroughly mixed with up to 1% of phosphoric acid. The acid is reacting with the phosphatides, thus enabling a settlement of the water. The phosphatides can then be separated by filtration or centrifuging. This results in a “degummed” oil and gum resin, from which, under certain conditions, lecithin can be produced. For a thorough mixing of acid and oil, the IKA® dispersing machine of the type DISPAX-REACTOR® DR 2000 proved to be very suitable.
Free fatty acids (FFA) are influencing the taste of the oil and accelerate its spoiling. For neutralization of the FFA the oil is intensively mixed with sodium hydroxide at a temperature of approx. 90° to 100°C. The FFA are settling as soaps and can be separated by centrifuging. The DISPAX-REACTOR® DR 2000 as well as the single stage dispersing machine of the type ULTRA-TURRAX® UTL 2000 proved to be the right machines for the neutralization of FFA.
In order to remove remaining impurities like colour and oxidation products the oil can finally be bleached. For this purpose it is intensively mixed with bleaching clay. For this process we recommend the IKA® inline mixing and dispersing machine of the type MHD 2000.