BD series
Alfa Laval BD separators support reliable and efficient biodiesel processing by providing high performance purification of methyl esters, glycerine, water, and solids. Designed for the demands of modern biodiesel plants, these centrifuges offer stable operation, low product loss, and reduced energy use. With robust construction, automated solids discharge, and a configuration tailored for biodiesel applications, the BD range helps ensure consistent product quality throughout the production.
Key benefits of BD series for biodiesel processing
- High separation efficiency
- Low product loss during discharge, minimum product loss in discharge and low utility consumption
- Gentle feed handling, avoid shear damage and emulsification
- Made in stainless steel for process-liquid wetted parts, , supporting durability and corrosion resistance
- Reduced energy and utility consumption
Alfa Laval can supply the complete biodiesel pre-treatment installation. As a leading manufacturer of centrifugal separation systems, the company offers a separator range designed for biodiesel processing.
Transesterification is the heart of the biodiesel process and it requires efficient separation of glycerine from biodiesel. The BD range provides this through five models with different capacities, delivering low product loss and reduced energy and utility use.
Each BD centrifuge includes a control unit, flameproof motor, process connections, auxiliary equipment, spare parts, and tools. The separator features a frame with a horizontal drive shaft, worm gear, oil bath, and vertical bowl spindle. The stainless steel bowl is a solids ejecting disc type with an automatic hydraulic system for shooting.
Innovative features of BD series
Hermetic Design™
Hermetic Design™ helps prevent air from entering the separator. This supports stable flow conditions during biodiesel processing, reduces the risk of emulsification, and limits oxidation of the product. It can also help reduce noise, vibration, and contamination risks.
How it works
The BD centrifuge is a three-phase centrifuge system purpose-built for removing both water and solids from the oil. This type of centrifuge is also widely known as a purifier and it consists of a bowl that rotates around a vertical axis.
Inside the bowl is a stack of conical discs where the separation takes place.
Rotating this bowl at high speed means that the effect of gravity on solids and liquids of different mass is replaced by a controllable centrifugal force, which can have an effect corresponding to thousands of times that of gravity. When subject to such forces, the solid particles and water – which are denser – are pressed outwards against the rotating bowl wall.
The BD centrifuge is based on a unique, semi-hermetic design concept. The hermetic, bottom-fed inlet ensures a gentle, non-destructive acceleration of the feedstock up to full bowl speed.
Service
Extending the performance of your equipment
Our dedicated Global Service Network supports you with parts and expertise, wherever you are, whenever you need it. By ensuring greater uptime, availability and optimization, we help bring you peace of mind, and maximize your return on investment. We can work with you to integrate our services into an Alfa Laval Service Agreement for predictable and worry-free operations.
Test, validate, and scale up your next separation solution
Whether upgrading your production line or running a proof of concept, Alfa Laval helps you choose the right separator solution with confidence. Simply get in touch to arrange a consultation and trial at one of our test centres, or to rent a unit for onsite testing.
The Separator Innovator
Would you like to know more about our innovations in separation technology? Click on the link below. Alfa Laval invented the first disc stack separator and has led the way in the development of centrifuge technology for over a century. We are glad to share with you the expertise we have gained along the way. Visit our Separator Innovator knowledge base to learn more about advancements in separation and the steps Alfa Laval is taking to continue revolutionizing the technology.
