US 12,264,206 B2
Method and device for the digestion of starch
Christian Stirn, Puch (AT); Roman Steindl, Zwettl (AT); and Klaus Bartelmuss, Teufenbach-Katsch (AT)
Assigned to PGA PUTZ-GRANITZER-ANLAGENBAU GESELLSCHAFT M.B.H., Wernberg (AT)
Appl. No. 17/283,905
Filed by PGA PUTZ-GRANITZER-ANLAGENBAU GESELLSCHAFT M.B.H., Wernberg (AT)
PCT Filed Oct. 8, 2019, PCT No. PCT/EP2019/077149
§ 371(c)(1), (2) Date Apr. 8, 2021,
PCT Pub. No. WO2020/074471, PCT Pub. Date Apr. 16, 2020.
Claims priority of application No. 313/2018 (AT), filed on Oct. 8, 2018.
Prior Publication US 2022/0010034 A1, Jan. 13, 2022
Int. Cl. C08B 30/12 (2006.01); B01F 23/50 (2022.01); B01F 27/808 (2022.01); B01F 27/81 (2022.01); C08B 30/16 (2006.01); C12P 19/22 (2006.01)
CPC C08B 30/12 (2013.01) [B01F 23/511 (2022.01); B01F 27/808 (2022.01); B01F 27/8111 (2022.01); C08B 30/16 (2013.01); C12P 19/22 (2013.01)] 16 Claims
OG exemplary drawing
 
1. Method for digesting starch, comprising:
a) Creating an aqueous slurry of powdery starch,
b) Introducing the slurry into a cooking vessel (4),
c) Treating the slurry in the cooking vessel (4) with steam, by: using a rotor with a finned dispersing disk to expose the slurry by mechanical action to shear forces that are created by the rotor with the finned dispersing disk, and implementing thermomechanical digestion by feeding steam from openings of at least one of a hollow ring (70) and a hollow displacement element, arranged below the rotor, the openings being directed toward the rotor (42) for the discharge of the steam toward the rotor, in order to implement the thermomechanical digestion, and
d) Drawing off the starch, converted at least partially into paste, from the cooking vessel (4).