International Sugar Journal

After four decades: a new look at ion-exchange resin at the Tongaat Hulett Refinery* [Full subscriber]

Abstract In November 1978 the bone char decolourisation plant at Tongaat-Hulett Refinery (Hulref) was replaced with five ion-exchange columns. This change had major benefits for the refinery in terms of chemical and energy costs, and refined sugar quality. In order to improve the liquor decolourisation, a further five secondary stage resin columns were installed in 1987. This improved the overall decolourisation from 60 to 70%. Since 1978 the resin plant has been using the same macroporous strong base anion acrylic resin. Having a single supplier of resin for the refinery has been identified as a risk. In view of this,…

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