EP1138787A1 - 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 PDFInfo
- Publication number
- EP1138787A1 EP1138787A1 EP01400763A EP01400763A EP1138787A1 EP 1138787 A1 EP1138787 A1 EP 1138787A1 EP 01400763 A EP01400763 A EP 01400763A EP 01400763 A EP01400763 A EP 01400763A EP 1138787 A1 EP1138787 A1 EP 1138787A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- peracetic acid
- weight
- solution
- ppm
- sugar
- 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.)
- Granted
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 due to the presence of telluric germs, like the lactic flora brought with the cossettes.
- telluric germs like the lactic flora brought with the cossettes.
- This flora which easily proliferates at the temperature used for process, results, when it develops in an uncontrolled way, by a acidification of the medium, which induces sucrose hydrolysis and therefore a loss yield of up to 1% of the sugar produced.
- J. HERCIK and V. DACHOVSKY (Listy Cukrovarnické 91/75 pages 126-132) studied the use as a disinfectant of Persteril, which is a solution aqueous 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 cannot replace formalin, but can, on the other hand, limit the use of the latter.
- R.NHYSTRAND (Zuckerindustrie 110 (8) (1985) p. 693-698) determined than Ekarox® B10, which is an aqueous solution containing 2.5% by weight, of acid peracetic and 30% by weight of hydrogen peroxide, was an alternative valid when using formalin, when extracting sugar from beet sugar, at a concentration of total active ingredients (peracetic acid + hydrogen peroxide) between 200 and 500 ppm.
- European patent application EP 0 678 123 published on October 25, 1995 reports on a process for disinfecting aqueous sugar solutions obtained during the extraction, using two aqueous solutions of acid peracetic, one having a hydrogen peroxide to acid molar ratio peracetic greater than or equal to 12, which is introduced into the pulp waters the other having a hydrogen peroxide to acid molar ratio peracetic less than or equal to 10, which is introduced into the central fraction of diffusers.
- This process because it involves the use of two solutions of different concentrations, creates implementation problems for production unit operators.
- European patent application EP 0 943 692 published on September 22 1999 discloses a process using only one solution of peracetic acid in which the molar ratio of hydrogen peroxide to peracetic acid is less than or equal to 4, by introducing it at at least one point upstream of the diffusion drums, and at at least one point in the water circuit from the pressing of the pulps, before recycling to the diffusion drum (s), so as to maintain a concentration of peracetic acid at a value understood between 10 and 300 ppm (parts per million) and preferably between 20 and 50 ppm, the beets possibly sprayed with said solution before cutting in pods.
- the Applicant has sought to improve the efficiency of the methods described above, without causing new negative side effects.
- the subject of the invention is a method of disinfection with peracetic acid, of sugar solutions circulating in a sugar extraction unit of the sugar beet, characterized in that it comprises, a step for treating cossettes by an aqueous solution comprising between approximately between 0.01% in weight and 1% by weight of peracetic acid and preferably between 0.3% by weight and 0.5% by weight of peracetic acid.
- processing is usually carried out by spraying or sprinkling said solution. It can also be done by immersion of said pods in the diluted solution.
- the treatment is preferably carried out by spraying said solution, at the outlet of the root cutter on the freshly cut pods
- aqueous solution of peracetic acid having a molar ratio hydrogen peroxide on peracetic acid, less than or equal to 4, at least a point in the installation upstream of the diffusion drum (s) and at least a point in the water circuit from the pressing of the pulps before recycling towards the diffusion drum (s).
- a peracetic acid solution is also continuously introduced into the circuits recycled water for distribution, in particular in press water at one initial concentration between 1 ppm and 100 ppm, preferably between 3 ppm and 50 ppm peracetic acid.
- the process includes a step of processing the beets before cutting them into cossettes by an aqueous solution of peracetic acid comprising between approximately between 0.1% by weight and 0.3% by weight of peracetic acid.
- processing is usually carried out by spraying or sprinkling said solution. It can also be done by immersion of said beets in the diluted solution.
- the method and its variants as defined above operate continuously, over an entire extraction campaign, i.e. approximately 3 to 6 months a year.
- Peracetic acid treatment subject of the process and its variants as defined above, is generally implemented with a single commercial composition.
- a composition is in the form of a solution aqueous containing 5% to 30% and preferably 15% to 25% by weight peracetic acid, 15% to 25% by weight of hydrogen peroxide and 15% at 25% acetic acid and particularly about 15% by weight of acid peracetic and 23% by weight of hydrogen peroxide.
- the commercial composition is continuously introduced without prior dilution, controlling the rate 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 different stages of processing is between approximately 20 g and 40 g per tonne of beets hurry.
- This process allows to control the infection in diffusion, the purity of the juice green, consumption of lime salts and coloring of white sugar.
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Organic Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Saccharide Compounds (AREA)
Abstract
Description
- aspersion en continu d'une solution diluée d'acide peracétique à une concentration de 0,1% à 0,3% en poids sur les betteraves nettoyées avant le coupe racines,
- aspersion en continu d'une solution diluée d'acide peracétique à une concentration de 0,3% à 0,5% en poids sur les cossettes fraíches en sortie du coupe racines,
- injection en continu dans le circuit d'eaux recyclées en diffusion. comprenant les eaux de presse, de la solution de BACTIPAL® 15/23, au débit nécessaire à l'obtention d'une concentration initiale d'au moins 3 ppm en peracétique.
Claims (7)
- Procédé de désinfection à l'acide peracétique, de solutions de sucre circulant dans une unité d'extraction du sucre de la betterave à sucre, caractérisé en ce qu'il comprend une étape de traitement des cossettes, par une solution aqueuse comprenant entre environ 0,01% en poids et 1% en poids d'acide peracétique et de préférence entre 0,3% en poids et 0,5% en poids d'acide peracétique.
- Procédé tel que défini à la revendication 1, caractérisé en ce que le traitement est effectué par aspersion de ladite solution sur les cossettes, en sortie du coupe-racines.
- Procédé tel que défini à l'une des revendications 1 ou 2, caractérisé en ce que l'on introduit en outre, une solution aqueuse d'acide peracétique ayant un ratio molaire peroxyde d'hydrogène sur acide peracétique inférieur ou égal à 4, en au moins un point de l'installation en amont du ou des tambours de diffusion et en au moins un point du circuit des eaux provenant du pressage des pulpes, avant recyclage vers le ou les tambours de diffusion.
- Procédé tel que défini à l'une quelconque des revendications 1 à 3, caractérisé en ce que l'on introduit en outre une solution d'acide peracétique en continu dans les circuits d'eaux recyclées en diffusion, en particulier dans les eaux de presse à une concentration initiale comprise entre 1 ppm à 100 ppm, et de préférence entre 3 ppm et 50 ppm d'acide peracétique.
- Procédé tel que défini à l'une quelconque des revendications 1 à 4, caractérisé en ce qu'il comprend en outre une étape de traitement des betteraves avant découpage en cossettes par une solution aqueuse d'acide peracétique comprenant entre environ entre 0,1% en poids et 0,3% en poids, d'acide peracétique.
- Utilisation d'une solution aqueuse unique, contenant de 5% à 30% et, de préférence, de 15% à 25% en poids d'acide peracétique, de 15% à 25% en poids de peroxyde d'hydrogène et de 15% à 25 % d'acide acétique et plus particulièrement environ 15% en poids d'acide peracétique et 23% en poids de peroxyde d'hydrogène pour mettre en oeuvre le procédé tel que défini à l'une des revendications 1 à 5.
- Procédé tel que défini à l'une quelconque des revendications 1 à 6, caractérisé en ce que la quantité totale d'acide peracétique utilisée au cours des différentes étapes de traitement est comprise entre environ 20 g et 40 g par tonne de betteraves pressée.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0003956 | 2000-03-29 | ||
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 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1138787A1 true EP1138787A1 (fr) | 2001-10-04 |
EP1138787B1 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 (fr) |
AT (1) | ATE305523T1 (fr) |
DE (1) | DE60113582T2 (fr) |
ES (1) | ES2250319T3 (fr) |
FR (1) | FR2807065B1 (fr) |
HU (1) | HUP0101217A3 (fr) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0456627A2 (fr) * | 1990-05-10 | 1991-11-13 | Eka Nobel Ab | Procédé d'inhibition de la croissance microbienne |
WO1994016110A1 (fr) * | 1993-01-06 | 1994-07-21 | Solvay Interox Limited | Desinfection de solutions aqueuses |
EP0943692A1 (fr) * | 1998-03-19 | 1999-09-22 | Societe D'exploitation De Produits Pour Les Industries Chimiques-Seppic | Procédé de désinfection des solutions de sucre par une solution d'acide peracétique |
-
2000
- 2000-03-29 FR FR0003956A patent/FR2807065B1/fr not_active Expired - Fee Related
-
2001
- 2001-03-23 ES ES01400763T patent/ES2250319T3/es not_active Expired - Lifetime
- 2001-03-23 EP EP01400763A patent/EP1138787B1/fr not_active Expired - Lifetime
- 2001-03-23 DE DE60113582T patent/DE60113582T2/de not_active Expired - Lifetime
- 2001-03-23 AT AT01400763T patent/ATE305523T1/de not_active IP Right Cessation
- 2001-03-28 HU HU0101217A patent/HUP0101217A3/hu not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0456627A2 (fr) * | 1990-05-10 | 1991-11-13 | Eka Nobel Ab | Procédé d'inhibition de la croissance microbienne |
WO1994016110A1 (fr) * | 1993-01-06 | 1994-07-21 | Solvay Interox Limited | Desinfection de solutions aqueuses |
EP0678123A1 (fr) * | 1993-01-06 | 1995-10-25 | Solvay Interox Ltd | Desinfection de solutions aqueuses. |
EP0943692A1 (fr) * | 1998-03-19 | 1999-09-22 | Societe D'exploitation De Produits Pour Les Industries Chimiques-Seppic | Procédé de désinfection des solutions de sucre par une solution d'acide peracétique |
Non-Patent Citations (4)
Title |
---|
CHEMICAL ABSTRACTS, vol. 83, no. 18, 3 November 1975, Columbus, Ohio, US; abstract no. 149459c, J.HERCIK ET AL.: "Use of peracetic acid for disinfection in sugar industry" page 136; XP002091669 * |
LISTY CUKROV, vol. 91, no. 6, 1975, pages 126-132 * |
R NYSTRAND: "disinfectants in beet sugar extraction", ZUCKERINDUSTRIE - SUGAR INDUSTRY - INDUSTRIE SUCRIRE,DE,BARTENS, BERLIN, vol. 110, no. 8, 1985, pages 693 - 698, XP002091668, ISSN: 0344-8657 * |
R PEHRSSON ET AL: "The use of peracetic acid formulations in the disinfection of beet sugar extracton plants", ZUCKERINDUSTRIE - SUGAR INDUSTRY - INDUSTRIE SUCRIRE,DE,BARTENS, BERLIN, vol. 120, no. 7, 1 July 1995 (1995-07-01), pages 593 - 597, XP002091667, ISSN: 0344-8657 * |
Also Published As
Publication number | Publication date |
---|---|
ES2250319T3 (es) | 2006-04-16 |
HUP0101217A3 (en) | 2002-05-28 |
FR2807065A1 (fr) | 2001-10-05 |
DE60113582T2 (de) | 2006-06-22 |
HU0101217D0 (en) | 2001-05-28 |
HUP0101217A2 (hu) | 2002-03-28 |
FR2807065B1 (fr) | 2003-01-03 |
EP1138787B1 (fr) | 2005-09-28 |
ATE305523T1 (de) | 2005-10-15 |
DE60113582D1 (de) | 2006-02-09 |
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