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US 11,932,707 B2Granted
Method for dissolving starch
AssigneeKemira Oyj
InventorsAsko Karppi, Perttu Heiska, Mika Suvanto, Matti Hietaniemi
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Abstract
The present invention relates to a method and an arrangement for dissolving starch. Specifically, the present invention relates to a method for dissolving starch by introducing mechanical force to at least partially gelatinized aqueous starch.
Claims20
A method for dissolving starch, the method comprising:
- a) providing a feed (Feed-1) of an aqueous starch slurry having a temperature at least 5° C. below gelatinization temperature (on-set) of the starch;
- b) bringing said feed (Feed-1) together with an aqueous feed of starch (Feed-2) having a temperature of at least 60° C. to form a mixed feed (Feed-3);
- and
- c) subjecting said mixed feed (Feed-3) to dispergation to adjust the viscosity of said mixed feed (Feed-3).
1 more element
An arrangement for dissolving starch comprising
- a conduit for feeding an aqueous starch slurry (Feed-1) to a conduit for mixed feed;
- a conduit for feeding an aqueous feed of starch having an elevated temperature (Feed-2) to the conduit for mixed feed;
- the conduit for mixed feed connecting the conduit for aqueous starch slurry (Feed-1), the conduit for aqueous feed of starch (Feed-2) to form a mixed feed and further connecting a high shear dispergator,
- the high shear dispergator for adjusting a viscosity of gelatinized starch in the mixed feed;
- and
- a conduit for circulating dispersed starch feed back to the dispergator or a dissolution tank or recovering the dispersed starch feed,
- wherein the conduit for the mixed feed is configured to serve as a gelatinization zone by having a length adapted to provide a sufficient gelatinization time for the starch in mixed feed (feed-3), and lead for resulting gelatinized solution to the dispergator.
4 more elements
Dependencies are inferred from the claim text.