Sugar – starch – and carbohydrates – Processes – Carbohydrate manufacture and refining
Patent
1996-05-14
1998-06-02
Caldarola, Glenn
Sugar, starch, and carbohydrates
Processes
Carbohydrate manufacture and refining
127 44, 127 48, 127 50, 127 55, 127 57, 127 461, 210639, 210650, 210705, C13D 108, C13D 114, C13D 312, C13D 316
Patent
active
057592837
ABSTRACT:
An efficient method for manufacturing a purified juice product from sugar beets. Untreated beet juice is initially prelimed using lime and CaCO.sub.3 to produce a prelimed juice product. Instead of subjecting the prelimed product to main liming and dual carbonation stages, the product is delivered to a porous filtration membrane which allows sugar molecules to pass therethrough which preventing the passage of solid matter and dissolved impurities. Optimum results are achieved if the prelimed product flows across the membrane from end to end. The membrane permeate is thereafter combined with CO.sub.2(g) in a single carbonation stage to remove dissolved lime. This step generates a purified juice product which can be processed to manufacture pure crystalline sugar. The membrane retentate can be combined with water and refiltered to collect residual sugar materials. The foregoing process uses less energy and raw materials (e.g. lime) compared with conventional methods.
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Donovan Michael
Ekern Eric P.
Goculdas Bimal
Hlavacek Marc
Caldarola Glenn
Hailey Patricia L.
Malkin Jay K.
The Western Sugar Company
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