EP1138787B1 - Procédé de désinfection de solutions de sucre comprenant le traitement des cossettes par une solution d'acide peracétique - Google Patents

Procédé de désinfection de solutions de sucre comprenant le traitement des cossettes par une solution d'acide peracétique Download PDF

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Publication number
EP1138787B1
EP1138787B1 EP01400763A EP01400763A EP1138787B1 EP 1138787 B1 EP1138787 B1 EP 1138787B1 EP 01400763 A EP01400763 A EP 01400763A EP 01400763 A EP01400763 A EP 01400763A EP 1138787 B1 EP1138787 B1 EP 1138787B1
Authority
EP
European Patent Office
Prior art keywords
peracetic acid
weight
sugar
beet
ppm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01400763A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1138787A1 (fr
Inventor
Daniel Le Rouzic
Jean-Claude Gamet
Jean-Marc Lauriot
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Societe dExploitation de Produits pour les Industries Chimiques SEPPIC SA
Bioxal SA
Original Assignee
Societe dExploitation de Produits pour les Industries Chimiques SEPPIC SA
Bioxal SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Societe dExploitation de Produits pour les Industries Chimiques SEPPIC SA, Bioxal SA filed Critical Societe dExploitation de Produits pour les Industries Chimiques SEPPIC SA
Publication of EP1138787A1 publication Critical patent/EP1138787A1/fr
Application granted granted Critical
Publication of EP1138787B1 publication Critical patent/EP1138787B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C13—SUGAR INDUSTRY
    • C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
    • C13B10/00—Production of sugar juices
    • C13B10/006—Conservation of sugar juices
    • C—CHEMISTRY; METALLURGY
    • C13—SUGAR INDUSTRY
    • C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
    • C13B10/00—Production of sugar juices
    • C13B10/08—Extraction of sugar from sugar beet with water
    • C13B10/083—Treatment of sugar beet before extraction

Definitions

  • the invention relates to the field of industrial extraction of sugar from sugar beets.
  • Industrial processes for extracting sugar from sugar beets include one or more disinfection steps because of the presence of telluric germs, like the lactic flora brought with the chips.
  • telluric germs like the lactic flora brought with the chips.
  • This flora which proliferates easily at the temperature of process, when it develops in an uncontrolled way, acidification of the medium, which induces a hydrolysis of sucrose and therefore a loss yield of up to 1% of the sugar produced.
  • ethylenediamine sulfur dioxide, disodium cyanodithiocarbamate, Potassium N-methyl dithiocarbamate, dimethyl dithiocarbamate, disodium methylene bis (dithiocarbamate), dimethyl dithiocarbamate sodium, esters of para-hydroxy benzoic acid, peracetic acid or hydrogen peroxide.
  • J. HERCIK and V. DACHOVSKY (Listy Cukrovarnické 91/75 pages126-132) have studied the use as a disinfectant of Persteril, which is a solution aqueous solution containing 36% to 40% by weight, peracetic acid and 7 to 10% by weight of hydrogen peroxide, diluted to 0.1% -1%, in the manufacture of sugar. They found that this composition can not replace formalin, but can, on the other hand, limit the use of the latter.
  • Ekarox® B10 which is an aqueous solution containing 2.5% by weight, of peracetic acid and 30% by weight of hydrogen peroxide, was an alternative valid for the use of formaldehyde when extracting sugar from beet sugar, at a concentration of total active ingredients (peracetic acid + hydrogen peroxide) of between 200 and 500 ppm.
  • European Patent Application EP 0 678 123 published on October 25, 1995 describes a process for the disinfection of aqueous sugar solutions during the extraction, using two aqueous solutions of acid peracetic, one having a molar ratio of hydrogen peroxide to acid peracetic greater than or equal to 12, which is introduced into the pulp waters pressed, and the other having a molar ratio of hydrogen peroxide to acid peracetic less than or equal to 10, which is introduced into the central fraction of broadcasters.
  • This process because it involves the use of two solutions of different concentrations, gives rise to problems of implementation at operators of the production unit.
  • European Patent Application EP 0 943 692 published on September 22 1999 discloses a process using only one peracetic acid solution in which the molar ratio of hydrogen peroxide to peracetic acid is less than or equal to 4, by introducing it at least one point upstream of the broadcast drums, and at least one point in the water circuit from the pulp pressing, before recycling to the diffusion drum or drums, to maintain a peracetic acid concentration at a value between 10 and 300 ppm (parts per million) and preferably between 20 and 50 ppm, the beets being optionally sprayed with said solution before cutting in chips.
  • the applicant has sought to improve the efficiency of the processes described above, without creating new negative side effects.
  • the subject of the invention is a process for disinfecting peracetic acid, of sugar solutions circulating in a sugar extraction unit of the sugar beet, characterized in that it comprises a step of treatment of beets before cutting into chips with an aqueous solution of acid peracetic composition comprising between about 0.1% by weight and 0.3% by weight, of peracetic acid, a step of spraying the chips, at the outlet of the root cutter, by an aqueous solution comprising between about 0.01% by weight and 1% by weight of peracetic acid and preferably between 0.3% by weight and 0.5% by weight weight of peracetic acid, characterized in that a further aqueous solution of peracetic acid having a peroxide molar ratio of hydrogen on peracetic acid less than or equal to 4, in at least one point of the installation upstream of the diffusion drum or drums and at least one point of the circuit of water from pulp pressing, before recycling to the diffusion drums and characterized in that a further solution is peracetic acid continuously in the recydulated water circuits
  • the treatment of beetroot before cutting mentioned above is generally performed by spraying or spraying said solution. he may also be carried out by immersing the said beetroot in diluted solution.
  • the process as defined above operates in continuous, over a whole campaign of extraction is, about 3 to 6 months per year.
  • the treatment with peracetic acid, object of the process and its variants as defined previously, is generally implemented with only one commercial composition.
  • a composition is in the form of a solution aqueous containing from 5% to 30% and preferably from 15% to 25% by weight peracetic acid, 15% to 25% by weight of hydrogen peroxide and 15% peracetic acid, 15% to 25% by weight of hydrogen peroxide and 15% 25% acetic acid and particularly about 15% by weight of acid peracetic and 23% by weight of hydrogen peroxide.
  • the commercial composition is introduced continuously without prior dilution, by controlling the flow of introduction by measuring the desired initial concentration of peracetic acid in the circuit instead of introduction.
  • the total amount of peracetic acid used during the various stages of treatment is between about 20 g and 40 g per tonne of beet hurry.
  • This process makes it possible to control the diffusion infection, the purity of the juice green, consumption of lime salts and coloring of white sugar. We have a minimum increase of 2% in the dry matter content of the pressed pulp.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Organic Chemistry (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Saccharide Compounds (AREA)
EP01400763A 2000-03-29 2001-03-23 Procédé de désinfection de solutions de sucre comprenant le traitement des cossettes par une solution d'acide peracétique Expired - Lifetime EP1138787B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0003956A FR2807065B1 (fr) 2000-03-29 2000-03-29 Procede de desinfection de solutions de sucre comprenant le traitement des cossettes par une solution d'acide peracetique
FR0003956 2000-03-29

Publications (2)

Publication Number Publication Date
EP1138787A1 EP1138787A1 (fr) 2001-10-04
EP1138787B1 true EP1138787B1 (fr) 2005-09-28

Family

ID=8848602

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01400763A Expired - Lifetime EP1138787B1 (fr) 2000-03-29 2001-03-23 Procédé de désinfection de solutions de sucre comprenant le traitement des cossettes par une solution d'acide peracétique

Country Status (6)

Country Link
EP (1) EP1138787B1 (hu)
AT (1) ATE305523T1 (hu)
DE (1) DE60113582T2 (hu)
ES (1) ES2250319T3 (hu)
FR (1) FR2807065B1 (hu)
HU (1) HUP0101217A3 (hu)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE502211C2 (sv) * 1990-05-10 1995-09-18 Eka Nobel Ab Sätt att motverka mikrobiell tillväxt av termofila bakterier samt komposition härför
GB9300243D0 (en) * 1993-01-06 1993-03-03 Solvay Interox Ltd Disinfection of aqueous solutions
FR2776303B1 (fr) * 1998-03-19 2000-05-05 Seppic Sa Procede de desinfection des solutions de sucre par une solution d'acide peracetique

Also Published As

Publication number Publication date
EP1138787A1 (fr) 2001-10-04
FR2807065B1 (fr) 2003-01-03
ATE305523T1 (de) 2005-10-15
ES2250319T3 (es) 2006-04-16
HUP0101217A3 (en) 2002-05-28
DE60113582D1 (de) 2006-02-09
FR2807065A1 (fr) 2001-10-05
HU0101217D0 (en) 2001-05-28
DE60113582T2 (de) 2006-06-22
HUP0101217A2 (hu) 2002-03-28

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