International Sugar Journal

Optimisation of low load boiler operations † [Full subscriber]

New South Wales Sugar Milling Co-Op is required to operate its Harwood boiler at low load during the non-crushing season to supply refinery steam demand. Boiler loads in the slack season typically fall to around 25% of Maximum Continuous Rating (MCR), resulting in inefficient operation due to the elevated excess air ratios required to maintain suspension burning. Excess bagasse generated during the crushing season is insufficient to supply the full refinery off-season demand, resulting in the purchase of other biomass fuels or coal. As part of Harwood’s EEO (Energy Efficiency Opportunities) initiatives, trials were designed and undertaken to operate the…

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