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Title:
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Thin Film Drying Processes; Energy- and economic aspects compared to spray drying
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Author(s):
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Published by:
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Publication date:
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ECN
Biomass & Energy Efficiency
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1-6-2017
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ECN report number:
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Document type:
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ECN-E--17-084
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ECN publication
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Number of pages:
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Full text:
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36
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Download PDF
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Abstract:
This report gives a systematic comparison of the energy consumption and the investment- and energy costs for a conventional spray dryer in comparison to three conductive thin film drying processes. The evaluated thin film drying processes are: vacuum drum drying, agitated thin film drying and refractance window drying. The comparison is carried out for a drying capacity of 500 kg water/h by evaporation.
Taken all boundary conditions into account, it is concluded that for the evaluated conductive thin film drying processes a reduction in primary energy (15% to 35%), capital costs (45% to 65%) and operational costs (37% to 50%) can be expected.
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