International Sugar Journal

An innovative process for producing plantation-white sugar of ultra-low SO2 content* [Full subscriber]

Abstract The conventional double sulphitation process for producing plantation-white sugar suffers from three main draw backs: (i) formation of hard scale on the juice heater and evaporator tubes that is difficult to remove by chemical cleaning and, hence, requires frequent mechanical de-scaling during the crush; (ii) accelerated corrosion of downstream carbon steel pipelines and vessels due to the addition of sulphur dioxide gas during the process of juice clarification; and (iii) lower shelf life of white sugar due to presence of 30-50 ppm SO2. The bulk chemical requirement is also high, i.e. 0.7 kg sulphur and 2.0 kg lime per…

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