Process for continuously producing sugar

Details Process for continuously producing sugar Process for continuously producing sugar

1976-06-21

1977-09-27

Marantz, Sidney

Sugar, starch, and carbohydrates

Processes

Carbohydrate manufacture and refining

127 16, 127 61, 159 44, 159 47R, 159 45, C13F 102, C13G 100

Patent

active

040509532

ABSTRACT:
In a continuous sugar evaporator-crystallizer having a plurality of evaporating-crystallizing vessels as stages, each evaporating-crystallizing stages being communicated one to another in series and being provided with a means for feeding an aqueous sugar solution, a heating means and a means for withdrawing generated steam, by feeding an aqueous sugar solution to each evaporating-crystallizing stage, heating the aqueous sugar solution in each evaporating-crystallizing stage, thereby evaporating water off the aqueous sugar solution and crystallizing sugar crystals, and withdrawing the generated steam from each of the stages, while feeding seed sugar crystals to the first evaporating-crystallizing stage and withdrawing the resulting sugar crystal slurry from the last evaporating-crystallizing stage, sugar crystals of high quality is obtained in the slurry with an effective suppression of occurrence of conglomerated sugar grains by providing sugar crystal distances of 0.26 to 0.59 mm in the solution in the first evaporating-crystallizing stage, and feeding the aqueous sugar solution to each of intermediate evaporating-crystallizing stages excluding the first and last evaporating-crystallizing stages at a substantially equal feed rate, and making the feed rate of the aqueous sugar solution to the first evaporating-crystallizing stage at least 1.5 times the feed rate to each of the intermediate evaporating-crystallizing stages.

REFERENCES:
patent: 3899386 (1975-08-01), Komiyama
Spencer-Meade, "Cane Sugar Handbook", 9th Edition, p. 222, John Wiley & Sons, Inc., N.Y.

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