(19)
(11) EP 0 957 178 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
23.02.2000 Bulletin 2000/08

(43) Date of publication A2:
17.11.1999 Bulletin 1999/46

(21) Application number: 99108020.1

(22) Date of filing: 23.04.1999
(51) International Patent Classification (IPC)7: C13D 3/16, C13F 1/02
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 13.05.1998 IT GE980039

(71) Applicant: ERIDANIA S.p.A.
16128 Genova (IT)

(72) Inventors:
  • Mantovani, Giorgio
    44100 Ferrara (IT)
  • Vaccari, Giuseppe
    45039 Stienta (Rovigo) (IT)

(74) Representative: Porsia, Attilio, Dr. 
c/o Succ. Ing. Fischetti & Weber Via Caffaro 3/2
16124 Genova
16124 Genova (IT)

   


(54) Method for the production of white sugar of commercial quality from microfiltered or ultrafiltered raw beet juice


(57) Method for the preparation of white sugar of commercial quality from raw beet sugar, including the following operations:
  • a) microfiltration or ultrafiltration of the juice, after separating the organic and mineral particles whose size is above 50 microns, using membranes whose size is between 5000 MWCO and 0.5 micron;
  • b) juice sweetening;
  • c) juice concentration in multi-effect evaporators;
  • d) cooling crystallisation of the juice thus obtained;
  • e) separation and washing of the crystals.






Search report