EP1063303B1 - Procédé et installation d'épuration d'un jus sucré - Google Patents
Procédé et installation d'épuration d'un jus sucré Download PDFInfo
- Publication number
- EP1063303B1 EP1063303B1 EP00401791A EP00401791A EP1063303B1 EP 1063303 B1 EP1063303 B1 EP 1063303B1 EP 00401791 A EP00401791 A EP 00401791A EP 00401791 A EP00401791 A EP 00401791A EP 1063303 B1 EP1063303 B1 EP 1063303B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- unit
- treatment
- carbonation
- sugar juice
- prepurification
- 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.)
- Revoked
Links
- 235000011389 fruit/vegetable juice Nutrition 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000008569 process Effects 0.000 title claims abstract description 18
- 238000000746 purification Methods 0.000 title claims description 28
- 238000005345 coagulation Methods 0.000 claims abstract description 17
- 230000015271 coagulation Effects 0.000 claims abstract description 17
- 239000008394 flocculating agent Substances 0.000 claims abstract description 7
- 238000010908 decantation Methods 0.000 claims abstract 4
- 238000011282 treatment Methods 0.000 claims description 50
- 230000035800 maturation Effects 0.000 claims description 5
- 239000000701 coagulant Substances 0.000 claims description 3
- 239000000706 filtrate Substances 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims 7
- 241000196324 Embryophyta Species 0.000 claims 4
- CZMRCDWAGMRECN-UHFFFAOYSA-N Rohrzucker Natural products OCC1OC(CO)(OC2OC(CO)C(O)C(O)C2O)C(O)C1O CZMRCDWAGMRECN-UHFFFAOYSA-N 0.000 claims 1
- 235000011116 calcium hydroxide Nutrition 0.000 claims 1
- 239000000920 calcium hydroxide Substances 0.000 claims 1
- 238000004064 recycling Methods 0.000 claims 1
- 238000000926 separation method Methods 0.000 abstract description 10
- 239000003795 chemical substances by application Substances 0.000 abstract description 8
- 238000005352 clarification Methods 0.000 abstract 4
- 239000013049 sediment Substances 0.000 abstract 1
- 239000010802 sludge Substances 0.000 description 19
- 241000427324 Glinus Species 0.000 description 15
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 11
- 235000011941 Tilia x europaea Nutrition 0.000 description 11
- 239000004571 lime Substances 0.000 description 11
- 238000009434 installation Methods 0.000 description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 5
- 235000016068 Berberis vulgaris Nutrition 0.000 description 4
- 241000335053 Beta vulgaris Species 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 235000009508 confectionery Nutrition 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000002203 pretreatment Methods 0.000 description 3
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 3
- 241000219310 Beta vulgaris subsp. vulgaris Species 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 235000021536 Sugar beet Nutrition 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000002845 discoloration Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000013336 milk Nutrition 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 210000004080 milk Anatomy 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000009923 sugaring Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C13—SUGAR INDUSTRY
- C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
- C13B20/00—Purification of sugar juices
- C13B20/02—Purification of sugar juices using alkaline earth metal compounds
- C13B20/04—Purification of sugar juices using alkaline earth metal compounds followed by saturation
- C13B20/06—Purification of sugar juices using alkaline earth metal compounds followed by saturation with carbon dioxide or sulfur dioxide
-
- C—CHEMISTRY; METALLURGY
- C13—SUGAR INDUSTRY
- C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
- C13B20/00—Purification of sugar juices
- C13B20/02—Purification of sugar juices using alkaline earth metal compounds
Definitions
- the present invention relates generally to a process for purifying sugary juices, in particular sugary juices from sugar beets, which allows a very significant reduction in the lime consumption, up to 70% of the consumption of lime from current treatment plants, with juice quality clear equivalent.
- the present invention therefore relates to a purification process a sweet juice allowing a lower consumption of lime as well as device for implementing this method.
- the present invention also relates to a method purification of a sweet juice improving the filtration capacity of first and second carbonation and improving the color index of final clear juice for a given consumption of lime.
- the method of the invention can be implemented in existing treatment plants by means of a minor extension existing installations and without modification of the lime production, pumping carbon dioxide and raw carbonation and second carbonation.
- the main sequence of process treatments after the first treatment carbonation successively, a separation treatment of the sweet juice cloudiness obtained after this first carbonation treatment to separate a first main clear juice and first sludge carbonation and possibly a sulfitation treatment of the first main clear juice before second treatment carbonation.
- Some or all of the first sludge carbonation are generally recycled to the pre-liming stage of the pre-purification sequence.
- the fraction of the first sludge possibly non-recycled carbonation is mixed with the sludge from pre-purification before filtration.
- the cloudy second carbonation juice is also usually subjected to separation treatment to separate a second main clear juice and second carbonation sludge.
- the second clear juice can be subjected to a decalcification treatment and optionally to sulfitation and addition of sodium bisulfite before being subjected to an evaporation treatment.
- Some or all of the second carbonation sludge is recycled at the pre-liming stage of the pre-purification sequence.
- the fraction of second carbonation sludge possibly not recycled is mixed with the pre-purification sludge before filtration.
- a purification installation has been represented according to the invention which comprises a main set of processing units A and a set of pre-purification units B, according to the invention.
- the main assembly A successively comprises a unit of liming 1, a maturing unit 3, a first carbonation unit 4, a separation unit 5, 5 ′ of a first main clear juice JC1 and of first carbonation sludge, a second carbonation unit 6 and a separation unit 7, 7 'of a second main clear juice JC2 and of sludge of second carbonation.
- a heater 2 can be arranged between the liming unit 1 and the maturing unit 3 to heat the juice limed before being introduced into the maturing unit 3.
- a sulfitation unit (not shown) can be provided after the separation unit 5, 5 'for the treatment of the first main clear juice JC1 and / or after the separation unit 7, 7 'for the treatment of the second main clear juice JC2.
- the main assembly which has just been described constitutes in performs a conventional purification installation for sugary juices such as beets.
- the limed juice is generally reheated (by means of the heater 2) to a temperature of the order of 83-85 ° C and sent to a maturation unit 3 then to a first carbonation unit 4 where it is mixed with CO 2 from a lime kiln.
- the first cloudy juice JT1 coming from the first carbonation unit 4 is then brought into a separation unit 5, 5 ′ comprising for example thickening filters or decanters to separate a first clear juice JC1 and sludge of first carbonation.
- the clear juice JC1 is then reheated to a temperature of the order of 92-95 ° C and introduced in one second unit carbonation 6 where it is again treated with carbon dioxide and undergoes additional carbonation up to a pH of 9 to 9.3 in general.
- the cloudy second carbonation JT2 juice is then sent to a separation unit 7, 7 ', generally similar to the previous one where separates a second clear JC2 juice from the second carbonation sludge.
- JC2 clear juice can then undergo various conventional operations such as sulfitation (SO 2 treatment), decalcification and the addition of sodium bisulfite before passing through a multiple evaporation unit (not shown) to be crystallized.
- the sulfitations of clear juices JC1 and JC2 or the addition of sodium bisulfite are intended to provide discoloration complementary to the final juice.
- the installation further comprises a set of pre-treatment B which includes a pre-liming unit 8, a coagulation 10, a decanting unit 11, in which the sweetened juice to be purified is treated before being sent to the main assembly A and subjected to the main sequence of treatments.
- a set of pre-treatment B which includes a pre-liming unit 8, a coagulation 10, a decanting unit 11, in which the sweetened juice to be purified is treated before being sent to the main assembly A and subjected to the main sequence of treatments.
- all of the sweet juice to be purified for example a sweet diffusion juice is introduced into the pre-liming unit 8 where the sweet juice to be purified is mixed with all or a fraction of the sludge from first and second carbonation from the main sequence of treatments and possibly a small amount of lime milk.
- the residence time in the pre-liming unit 8 is between 2 'and 30', usually about 20 minutes and the processing temperature is generally between 40 to 80 ° C, preferably 68 to 75 ° C.
- the amount of lime milk possibly used corresponds to a equivalent amount of 0 to 3g / liter of CaO.
- the pre-limed mixture from the pre-liming unit 8 is then routed, possibly after reheating in a heater 9 to one temperature of 78 ° C or more, usually about 80 ° C to 83 ° C, in a coagulation unit 10 where it is mixed with a coagulation agent.
- the amount of coagulation agent generally used is 2 to 5 ppm / liter.
- the coagulation time is generally between 5 and 30 minutes, preferably about 10 to 15 minutes.
- the coagulated juice in the coagulation unit 10 is then routed, supplemented with a flocculating agent, generally in one amount from 2 to 5 ppm / liter, up to a settling unit 11 where separates a clear juice from pre-treatment JCs and secondary sludge.
- the residence time in the settling unit 11 is generally of the order 20 to 30 minutes.
- the clear juice of pre-purification JCs is then brought into the liming unit 1 of the main assembly A with a view to being subjected to the main sequence of treatments, as described above.
- the pre-treatment sludge possibly mixed with a non-recycled fraction of the first and second sludge carbonation are conveyed from the settling unit 11 to a separation unit 12, for example a filter press, for filtration and sugaring with obtaining on the one hand of sugared scum and on the other hand of a filtrate generally recycled with the clear juice of pre-purification JCs from the settling unit 11.
- a separation unit 12 for example a filter press
- the secondary pre-purification unit B can be carried out without modification of lime production and gas pumping installations CO2 and first and second carbonation units.
- the purification process and installation according to the invention further improve the filterability of cloudy juices first and second carbonation and the color index of the clear juice of second carbonation for a given lime consumption.
- the method makes it possible to obtain the same overall efficiency. treatment treatment than the conventional process (purity and coloring of clear juice of second carbonation).
- this process according to the invention reduces discharges such as first carbonation scum (10 to 25 kg less per tonne of beet processed) and therefore of CO 2 released into the atmosphere.
- the loss of sugar in the scum is reduced in the same proportion than the amount of scum.
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Non-Alcoholic Beverages (AREA)
- Saccharide Compounds (AREA)
Description
- un jus sucré obtenu par tout procédé d'extraction classique, par exemple un jus sucré de diffusion est introduit dans l'unité de chaulage 1 où il est mélangé avec une quantité importante de chaux (CaO) représentant en général une addition de 10 à 24 g de CaO par tonne de betteraves.
Claims (10)
- Procédé d'épuration d'un jus sucré, en particulier d'un jus sucré de betteraves, comprenant une séquence principale de traitements successifs (A), comportant un traitement de chaulage (1) éventuellement un traitement de maturation (3), et au moins deux traitements successifs de carbonatation (4, 6), caractérisé en ce qu'il comprend une séquence de pré-épuration (B) consistant à :a) soumettre la totalité du jus sucré à épurer à un traitement de préchaulage (8) avec addition de la totalité ou d'une partie des boues provenant de la séquence principale de traitement ;b) soumettre le jus sucré préchaulé à un traitement de coagulation (10) avec un agent de coagulation ;c) soumettre le jus sucré coagulé à une décantation (11) avec addition d'un agent de floculation pour séparer un jus sucré clair de pré-épuration (JCs) de boues de pré-épuration ; etd) soumettre le jus sucré clair de pré-épuration (JCs) à la séquence principale de traitements.
- Procédé selon la revendication 1, comprenant un premier et un second traitement de carbonatation (4, 6) produisant respectivement des boues de première et seconde carbonatation, caractérisé en ce qu'au moins une fraction des boues de première et de seconde carbonatation est recyclée dans l'étape de préchaulage (8) de la séquence de pré-épuration.
- Procédé selon la revendication 1 ou 2, caractérisé en ce que la séquence principale de traitements comprend après le traitement de première carbonatation (4) et/ou le traitement de seconde carbonatation (6) un traitement de sulfitation.
- Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le traitement de préchaulage (8) comprend l'addition d'une quantité de lait de chaux correspondant à un équivalent de 0 à 3 g/litre de CaO.
- Procédé selon la revendication 4, caractérisé en ce que le traitement de préchaulage s'effectue à une température de 40 à 80°C, de préférence 68 à 75°C.
- Procédé selon la revendication 4 ou 5, caractérisé en ce que la durée du traitement de préchaulage est de 5 à 30 minutes, en général 20 minutes environ.
- Installation d'épuration d'un jus sucré pour la mise en oeuvre du procédé d'épuration selon l'un quelconque des revendications précédentes, comprenant :un ensemble principal (A) d'unités de traitement comprenant :une unité de chaulage (1),éventuellement une unité de maturation (3),une unité de première carbonatation (4),une première unité de séparation (5, 5'),une unité de seconde carbonatation (6), etune seconde unité de séparation (7, 7'),une unité de préchaulage (8) recevant la totalité du jus sucré à épurer,une unité de coagulation (10) recevant simultanément le jus sucré préchaulé et un agent de coagulation,une unité de décantation (11) recevant le jus sucré coagulé additionné d'un agent de floculation pour séparer et récupérer d'une part un jus sucré clair de pré-épuration (JCs) et d'autre part des boues de pré-épuration, etun moyen pour réintroduire le jus sucré clair de pré-épuration dans l'unité de chaulage (1) de l'ensemble principal d'unités de traitement.
- Installation selon la revendication 7, caractérisée en ce qu'elle comprend en outre une unité de traitement (12) des boues secondaires pour en extraire un filtrat et éventuellement un moyen pour réunir ce filtrat au jus sucré clair de pré-épuration issu de l'unité de décantation (11).
- Installation selon la revendication 7 ou 8, caractérisée en ce que l'ensemble principal (A) d'unités de traitement comprend en outre une unité de sulfitation en aval de l'unité de première carbonatation (4) et/ou de l'unité de deuxième carbonatation (6).
- Installation selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle comprend des moyens pour recycler tout ou partie de boues de première et second carbonatation dans l'unité de préchaulage 8.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9908179 | 1999-06-25 | ||
FR9908179A FR2795429B1 (fr) | 1999-06-25 | 1999-06-25 | Procede et installation d'epuration d'un jus sucre |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1063303A1 EP1063303A1 (fr) | 2000-12-27 |
EP1063303B1 true EP1063303B1 (fr) | 2004-01-07 |
Family
ID=9547329
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00401791A Revoked EP1063303B1 (fr) | 1999-06-25 | 2000-06-22 | Procédé et installation d'épuration d'un jus sucré |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1063303B1 (fr) |
AT (1) | ATE257519T1 (fr) |
DE (1) | DE60007585T2 (fr) |
ES (1) | ES2214232T3 (fr) |
FR (1) | FR2795429B1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006004103B4 (de) | 2006-01-28 | 2007-12-20 | Südzucker AG Mannheim/Ochsenfurt | Rohsaftreinigung mit reduziertem Kalkverbrauch |
PL2742156T3 (pl) * | 2011-08-09 | 2016-10-31 | Sposób i instalacja do oczyszczania cieczy | |
CN103757142B (zh) * | 2014-01-09 | 2015-04-22 | 广西都安永鑫糖业有限公司 | 原生态有色糖品的生产方法 |
CN105772575A (zh) * | 2014-12-26 | 2016-07-20 | 中核建中核燃料元件有限公司 | 一种定位格架外条带侧冲装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1553443A (fr) * | 1967-02-13 | 1969-01-10 | ||
US4795494A (en) * | 1988-03-14 | 1989-01-03 | The Western Sugar Company | Beet juice purification system |
EP0550786B1 (fr) * | 1992-01-09 | 1997-09-17 | Limex | Procédé et appareil pour la production de sucre avec régénération et recyclage de l'écume de carbonatation |
US5480490A (en) * | 1995-02-10 | 1996-01-02 | The Western Sugar Company | Method for purifying beet juice using recycled materials |
-
1999
- 1999-06-25 FR FR9908179A patent/FR2795429B1/fr not_active Expired - Fee Related
-
2000
- 2000-06-22 DE DE60007585T patent/DE60007585T2/de not_active Revoked
- 2000-06-22 AT AT00401791T patent/ATE257519T1/de not_active IP Right Cessation
- 2000-06-22 EP EP00401791A patent/EP1063303B1/fr not_active Revoked
- 2000-06-22 ES ES00401791T patent/ES2214232T3/es not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1063303A1 (fr) | 2000-12-27 |
ATE257519T1 (de) | 2004-01-15 |
DE60007585T2 (de) | 2004-11-25 |
FR2795429A1 (fr) | 2000-12-29 |
ES2214232T3 (es) | 2004-09-16 |
FR2795429B1 (fr) | 2001-09-21 |
DE60007585D1 (de) | 2004-02-12 |
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