Process for reducing the lime consumption in sugar beet juice purification
AssigneeSudzucker Aktiengesellschaft Mannheim/Ochsenfurt
InventorsEric DENEUS, Gunter MERKEL, Thomas MICHELBERGER, Mohsen AJDARI RAD, Marc WILLEMS
Life of this patent
Estimating the term…
Abstract
The present invention relates to an improved process for extract purification of sugar beet raw juice, especially for reduction of lime consumption during the purification of sugar beet raw juice, to a process for producing a nutrient-rich non-sucrose concentrate from sugar beet raw juice, to the non-sucrose substance concentrate thus produced, to uses of the non-sucrose substance concentrate and to an apparatus for preliming sugar beet raw juice and/or for obtaining the non-sucrose substance concentrate.
Claims9
An apparatus for at least one of preliming sugar beet raw juice and for obtaining a non-sucrose substance concentrate which consists of a concentrated coagulate of non-sucrose substances made from sugar beet raw juice, said apparatus comprising
- at least one vessel for milk of lime treatment of the raw juice for coagulation of the non-sucrose substances present in the raw juice, said vessel having at least one inlet for the raw juice, at least one inlet for milk of lime and an outlet for discharge of the prelimed raw juice,
- at least one first removal apparatus for removing the coagulate slurry obtained in the preliming from the preliming juice, said first removal apparatus having an inlet, connected to the outlet of the vessel, for the preliming juice, a first outlet for discharge of the clear preliming juice removed from the coagulate slurry, and a second outlet for discharge of the coagulate slurry, and
- at least one second removal apparatus for further concentration of the coagulate slurry, said second removal apparatus having an inlet, connected to the second outlet of the first removal apparatus, for the removed coagulate slurry, a first outlet for discharge of the removed clear preliming juice and a second outlet for discharge of the concentrated coagulate slurry,
- wherein the preliming juice conducted out of the first outlet of the first removal apparatus is combined with the preliming juice conducted out of the first outlet of the second removal apparatus in a common line.
An apparatus for extract purification of sugar beet raw juice, said apparatus comprising:
- i. means for preliming sugar beet raw juice by adding milk of lime to the sugar beet raw juice;
- ii. means for adding at least one copolymer of acrylamide and sodium acrylate as a polyanionic flocculation assistant to the preliming juice;
- iii. means for removing coagulate from the preliming juice to obtain a clear preliming juice;
- iv. means for main liming the preliming juice obtained after removal of the coagulate by adding milk of lime thereto, and
- v. means for performing a first carbonation by introducing carbon dioxide into the main liming juice.
Dependencies are inferred from the claim text.