This article aims to provide a basic informative guide to calculating the equipment capacities for essential components in the sugar refinery, such as the raw sugar melter, melt clarification system, deep bed filters, ion exchange resin system, pan section, centrifugal section, sugar drying and grading.
1. Raw Sugar Storage / Handling
2. Affination mixer, (Required if the raw sugar colour is high)
4. Melt Clarifier ( First Decolourization ; Phospho- floatation Process or Carbonation process)
5. Filtration (Deep Bed Filtration)
6. Ion exchange resin ( Second Decolourization : Ion exchange resin, Powdered activated carbon & Granular activated carbon)
7. Melt Concentrator
8. Pans and crystallizers
9. Sugar dryer, Grading Drying & Packing
Refinery Production capacity:
We assume Refined sugar production = 1,200 TPD (Tons per day)
Average Brix of operation – 60 ( 60 to 65% brix)
Recycle around filtration, liquor re-circulation, dryer and grading in sugar reprocesses is around 25%
Hence, raw sugar melt quantity = 1200 x 1.25 = 1500Tons/day = 62.5 Tons / hour
i.e 104 tonnes melt flow per hour = 84 m3/h (Considered density – 1.24 g/ml)
Raw sugar handling storage / Handling:
In back-end sugar refinery there are various types of conveyors are used for transportation of raw sugar from the centrifugal section to raw sugar melter. Generally, ribbon screw conveyors or grasshopper conveyors are used in raw sugar houses to transport sugar from centrifugals or driers to raw sugar storage bins or packing bins. The ribbon or screw conveyor consists of a spiral ribbon or screw that revolves in a trough, carrying sugar with it. The cross section of the trough is usually parabolic instead of U-shaped.
Affination Magma Mixer
The affination process marks the initial stage in the sugar refinery, utilizing high-colored raw sugar as the input material. This procedure entails washing, characterized by the removal of the adhering molasses film from the surface of the raw sugar crystal.
During the affination process, the high-colored raw sugar is combined with affination liquor, obtained through centrifugation in the same process. The mixture is then purged in a centrifugal machine with hot water washing after the syrup has been spun off. Following this stage, two distinct products emerge: affinated sugar and affination liquor.
The affinated raw sugar is diverted to the raw sugar melter, while a portion of the affination liquor is employed in the same process. The remaining quantity is sent to the recovery house for massecuite boiling.
Please go through the below link for more information about material balance of Affination Process in Sugar Refinery Affination Process