International Sugar Journal

Influences of incondensable gas on Robert evaporator condensates* [Full subscriber]

Abstract      With the development of cogeneration at Racecourse Mill and other Australian mills, more evaporation is being undertaken in the front end of the evaporator stage to achieve better steam economies.  Longer residence times for juice at higher temperatures at the front of the evaporator set comprising Robert type evaporator vessels leads to increased rates of sucrose degradation and to increased corrosion rates of calandria, condensate pipework and condensate pumps.  The higher corrosion rates require premature replacement of these items and associated increases in production costs.  In addition, lower revenues result from increased sucrose degradation.  This study investigates at full…

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