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Reconsidering vapor compression for sugar crystallization

2010; Linguagem: Inglês

10.36961/si9852

0344-8657

Andreas Dolls, Martin Bruhns,

Sugarcane Cultivation and Processing

Vapor compressors are heat pumps used for evaporation processes. They can either be driven mechanically or by high pressure steam. The oldest installation of a vapor compressor in a sugar factory is still working in Aarberg, Switzerland. In the 1980s several sugar factories in France installed vapor compressors for recompression of crystallization vapors. A literature survey of these installations is given. Operation parameters of vapor compressors are explained and the possibilities of integrating these apparatus into sugar factories, especially under the conditions of a thick juice campaign, are discussed. A special attention is given to a so called vapor fans which have a lower pressure ratio performance than compressors but might be more economic.