Used Alfa Laval Disc Separator BD55
Alfa Laval Disc Separator BD55 applications
The BD 55 is specially designed for use in the production of biodiesel and is particularly suitable in the following applications:
• Separation of glycerol from methylesters after esterification and transesterification reactions
• Washing of methylesters
• Purification of glycerol
Technical specifications
Model: BD55
Manufacturing year: 2007
Bowl speed: 6250 rpm
Motor: 22 Kw
Max. density of feed: 1.1 g/cm3
Max. density of sediment: 1.4 g/cm3
Feed temperature range: 0–100°C (32–212°F)
Operating principles of Alfa Laval Disc Separator BD55
The suspension to be separated is fed into the separator bowl from the bottom through a hollow spindle and enters the disc stack. The heavy phase and heavy sludge are forced towards the periphery of the bowl, while the light phase flows towards the centre of the bowl, from where it is pumped out for further processing. The heavy phase is led over a top disc into a chamber where a paring device pumps it out of the separator. Sludge collects in the sludge space and is discharged intermittently and automatically. The discharge is achieved by a hydraulic system, which at preset suitable intervals forces the sliding bowl bottom to drop down, thus opening the sludge ports at the bowl periphery. The sludge is collected in the frame, and leaves the centrifuge via a cyclone.
