Continuous crystallization of fructose anhydride
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United States of America Patent
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May 19, 1987
Grant Date -
N/A
app pub date -
Nov 6, 1984
filing date -
Nov 29, 1983
priority date (Note) -
Expired
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Abstract
The present invention relates to a process for continuously crystallizing fructose anhydride using a seed crystallization tank and a crystallization tank separated from each other, comprising feeding an aqueous fructose solution containing at least 90% of fructose and containing at least 87 W/W % of solid and an aqueous solution containing a great deal of crystals in an amount of 0.5 to 5 times that of said fructose solution into a seed crystallization tank equipped with a high speed agitator, mixing the mixture at 40.degree. to 50.degree. C. at a high speed, introducing the obtained mixture into a crystallization tank and gradually cooling the mixture under condition under which new crystals do not form spontaneously to thereby grow the crystals. The present invention can realize the crystallization at a low temperature of 40.degree. to 50.degree. C. or below and prevents the decomposition and the polymerization of fructose which often occur above 50.degree. C. by mixing an aqueous fructose solution and a great deal of crystals at a high speed, whereby large and uniform crystals of fructose anhydride can be obtained in an enhanced yield.
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