Continuous crystallization of fructose anhydride
US4666527A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1984 |
| Grant date | May 19, 1987 |
| Priority date | — |
| Expiry date | Nov 6, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC13K11/00
- WIPO fieldFood chemistry
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.