International Sugar Journal

Pre-treatment of refinery final run-off for chromatographic separation † [Full subscriber]

In the case of a back-end refinery, the final run-off or return syrup of 92-95% purity and 75° brix is generally returned to the raw mill to be combined with raw syrup and boiled in the A-pans. Approximately 8% of the input raw sugar brix into a refinery is returned, consequently locking up A-pan capacity and, in the case of a factory with marginal pan capacity, cane throughput is restricted. In addition, energy consumption is increased and sugar losses in final molasses are elevated. A number of processes have been considered to eliminate recycling refinery run-off, most of which require…

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