Francisco

In the sugar manufacturing process, raw juice is extracted from sugar beet or cane. After extraction, the raw juice still contains various organic and non-organic substances which would interefere with the following production steps. These non-sugar substances must then be removed.

Lime and carbon dioxide are obtained by burning limestone in lime kilns. The lime is then added to the raw juice in the form of lime milk so that suspended matter flocculates and the unwanted non-sugar substances coagulate.

Technical data

Rotary Lobe Pump

Medium	Lime milk
Rated capacity	30 m³/h (132 usgpm/h)
Pressure	3 bar (44 psi)

Bioethanol refers to ethanol made exclusively from biomass or biodegradable portions of waste, for use as biofuel. Bioethanol can be made from any raw material that contains sugar or starch. It is often obtained from sugar beet syrup. The sugar beet syrup is made in a sugar factory.

A major ethanol manufacturer required a pump for unloading the tankers which delivered sugar beet syrup. The pump had to be able to convey the highly viscous syrup, be self-priming and pressure resistant up to 8 bar.

Technical data

Rotary Lobe Pump

Medium	Raw juice
Viscosity	500 - 1,500 mPas
Rated capacity	50 m³/h (220 usgpm))
Pressure	8 bar (116 psi)

A sugar producer was looking for a pump for conveying binder. The Rotary Lobe Pump is operated at speeds of up to 100 rpm due to the high viscosity of the binder. Due to the abrasive ingredients of the medium, the pump was equipped with replaceable casing liners and Premium stainless steel rotors. Maintenance of the pumps can be performed by in-house personnel on site at the sugar producer's by simply undoing a few screws.

Technical data

Rotary Lobe Pump

Medium	Binders
Viscosity	70,000 mPas
Rated capacity	40 m³/h (176 usgpm)
Pressure	8 bar (116 psi)

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.

Technical data

Rotary Lobe Pump

Medium	Sugar solution
Temperature	90 - 92 °C (194 - 198 °F)
Rated capacity	20 - 40 m³/h (88 - 176 usgpm)
Pressure	2 - 5 bar (29 - 73 psi)