A sugar producer needed a pump for conveying sugar solution. After the thin juice extracted from the sugar beet has been cleaned and run through the vaporization station it is called syrup.
Remaining water is extracted from the syrup in the boiling station at reduced pressure. Once a certain sugar concentration has been achieved, fine sugar crystals are added to the viscous juice using seed crystals. The seed crystals grow to the required size with further water extraction. The crystallization process is then complete and the crystals are left to cool down. They are then separated from the viscous syrup by spinning in centrifuges. The crystals are caught in a filter while the syrup flows through. To produce refined sugar (especially pure high-quality sugar), the crystallized sugar is dissolved. This is then called sugar solution. Refined table sugar is made by crystallizing this solution once again. It was important for the sugar producer that the pump be sufficiently robust for this process and that maintenance could be performed on site by in-house personnel without time consuming dismantling. The customer opted for a Boerger Rotary Lobe Pump.
|Börger||Rotary Lobe Pump|
|Temperature||90 - 92 °C (194 - 198 °F)|
|Rated capacity||20 - 40 m³/h (88 - 176 usgpm)|
|Pressure||2 - 5 bar (29 - 73 psi)|