EP 0987337 A1 20000322 - Method for producing commercial sugar
Title (en)
Method for producing commercial sugar
Title (de)
Verfahren zur Herstellung vom Handelszucker
Title (fr)
Procédé de fabrication de sucre commercialisable
Publication
Application
Priority
FR 9811625 A 19980917
Abstract (en)
In the production of commercial grade sugar, the purity of the molasses is held at ≤ 60 containing high purity syrup of ≥ 91. It is mixed with refined sugar from the preceding drawing, and baked to give a baked mass. The syrup from the first drawing has a purity of 79-83. The purity of the syrup from the first drawing is 81-82. Part of the baked mass is spun (7) to extract the sugar, and the low purity brine taken off is returned to the remainder of the baked mass which has not been spun. It reduces the purity of the new baked mass to give a global drainage at the level of the first drawing which is compatible with the purity of the seepage which is pulled back at the second drawing. Non-sugars are recycled with the drainage from the baking to avoid the use of a kneading mill under vacuum. The syrup of more refined sugar is first introduced at the baking stage (2), followed at the baking stage by the enriched drainage. The syrup from the first drawing is introduced after baking, to give increased thermal breakdown reactions and good seepage before being spun. The baked mass which has not been spun is passed to a vacuum kneading mill (4), or a crystallizing stage. The spun baked mass is 25-35 wt. % or 30-35 wt. % or 30 wt. % of the total baked mass. The kneading mill under vacuum has three or four stages.
Abstract (fr)
Procédé de fabrication de sucre commercialisable, c'est-à-dire de catégorie N° 1 ou N° 2, en maintenant une pureté de mélasse inférieure à environ 60, dans lequel un sirop de pureté élevée, c'est-à-dire supérieure à environ 90, est cuit lors d'une étape de cuisson après mélange avec du sucre affiné provenant du dernier jet, donnant une masse cuite, caractérisé en ce que la pureté de l'égout pauvre I, EPI, c'est-à-dire le sirop sortant du premier jet, est comprise entre environ 79 et environ 83, de préférence, entre environ 81 et environ 82. Selon l'invention, on a réduit le litrage de masse cuite à des valeurs entre environ 26 et 28 litres de masse cuite pour 100 kg de betteraves, entraînant une baisse de la consommation d'énergie et aussi une réduction des investissements nécessaires pour effectuer l'opération de cristallisation. <IMAGE>
IPC 1-7
IPC 8 full level
C13B 35/00 (2011.01); C13B 50/00 (2011.01); C13B 50/02 (2011.01)
CPC (source: EP)
C13B 35/00 (2013.01); C13B 50/00 (2013.01); C13B 50/02 (2013.01)
Citation (search report)
- [A] FR 2736932 A1 19970124 - BEGHIN SAY ERIDANIA [FR]
- [A] EP 0737753 A2 19961016 - ERIDANIA S P A [IT]
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0987337 A1 20000322; EP 0987337 B1 20040908; AT E275643 T1 20040915; DE 69919951 D1 20041014; DE 69919951 T2 20050929; DK 0987337 T3 20050117; ES 2227985 T3 20050401; FR 2783529 A1 20000324; FR 2783529 B1 20001208; WO 0017403 A1 20000330
DOCDB simple family (application)
EP 99402273 A 19990916; AT 99402273 T 19990916; DE 69919951 T 19990916; DK 99402273 T 19990916; ES 99402273 T 19990916; FR 9811625 A 19980917; FR 9902209 W 19990916