Process for controlling scale in the sugar process
AssigneeCooperatie Cosun U.A.
InventorsRobert Berends, Hendrika Cornelia Kuzee
Life of this patent
Estimating the term…
Abstract
The deposition of calcium salts, including calcium carbonate and calcium oxalate and the formation of foam, during the evaporation of sugar streams can be prevented or restricted by ding 0.1-200 ppm of a carboxyalkylfructan that contains 0.5-3 carboxyl groups per monosaccharide unit, 0.4-2.5 of which carboxyl groups are in the form of carboxyalkyl groups, to the sugar streams. The carboxyalkyl groups are, in particular, carboxymethyl groups. The other carboxyl groups can be carboxyl groups obtained by oxidation.
Claims9
A process for the prevention and/or control of the deposition of scale and/or the control of foaming during the evaporation of sugar streams using a polycarboxy compound, characterised in that a carboxyalkylfructan that contains 0.5-3 carboxyl groups per monosaccharide unit, at least 0.4 of which carboxyl groups is in the form of carboxyalkyl groups, is incorporated in the sugar stream.
Dependencies are inferred from the claim text.