EP1063303A1 - Verfahren und Vorrichtung zur Reinigung von Zuckersäften - Google Patents

Verfahren und Vorrichtung zur Reinigung von Zuckersäften Download PDF

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Publication number
EP1063303A1
EP1063303A1 EP00401791A EP00401791A EP1063303A1 EP 1063303 A1 EP1063303 A1 EP 1063303A1 EP 00401791 A EP00401791 A EP 00401791A EP 00401791 A EP00401791 A EP 00401791A EP 1063303 A1 EP1063303 A1 EP 1063303A1
Authority
EP
European Patent Office
Prior art keywords
unit
juice
treatment
carbonation
purification
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
Application number
EP00401791A
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English (en)
French (fr)
Other versions
EP1063303B1 (de
Inventor
Robert Guyot
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.)
La Sucrerie Cooperative de Bazancourt
Maguin SAS
Original Assignee
La Sucrerie Cooperative de Bazancourt
Maguin SAS
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Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9547329&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1063303(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by La Sucrerie Cooperative de Bazancourt, Maguin SAS filed Critical La Sucrerie Cooperative de Bazancourt
Publication of EP1063303A1 publication Critical patent/EP1063303A1/de
Application granted granted Critical
Publication of EP1063303B1 publication Critical patent/EP1063303B1/de
Anticipated expiration legal-status Critical
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    • 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 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 the 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, carbon dioxide pumping 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 carbonation, possibly not recycled, 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 decalcified 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 to 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 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 reheater 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 sludges 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 juice JT2 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 sweetened 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 quantity 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 around 10 to 15 minutes.
  • the coagulated juice in the coagulation unit 10 is then routed, supplemented with a flocculating agent, generally in one quantity from 2 to 5 ppm / liter, up to a settling unit 11 where separates clear JCs pre-treatment juice 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 C02 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 beets treated) 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.

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  • 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)
EP00401791A 1999-06-25 2000-06-22 Verfahren und Vorrichtung zur Reinigung von Zuckersäften Revoked EP1063303B1 (de)

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 true EP1063303A1 (de) 2000-12-27
EP1063303B1 EP1063303B1 (de) 2004-01-07

Family

ID=9547329

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00401791A Revoked EP1063303B1 (de) 1999-06-25 2000-06-22 Verfahren und Vorrichtung zur Reinigung von Zuckersäften

Country Status (5)

Country Link
EP (1) EP1063303B1 (de)
AT (1) ATE257519T1 (de)
DE (1) DE60007585T2 (de)
ES (1) ES2214232T3 (de)
FR (1) FR2795429B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8328948B2 (en) 2006-01-28 2012-12-11 Sudzucker Aktiengesellschaft Mannheim/Ochsenfurt Purification of raw juice featuring reduced lime consumption
WO2013020586A1 (de) * 2011-08-09 2013-02-14 Weber Ultrasonics Gmbh Verfahren und vorrichtung zum reinigen von flüssigkeiten
CN103757142A (zh) * 2014-01-09 2014-04-30 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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1553443A (de) * 1967-02-13 1969-01-10
US4795494A (en) * 1988-03-14 1989-01-03 The Western Sugar Company Beet juice purification system
EP0550786A1 (de) * 1992-01-09 1993-07-14 Limex Verfahren und Vorrichtung zur Zuckerproduktion mit Regenerierung und Rückführung des Karbonationschaum
US5480490A (en) * 1995-02-10 1996-01-02 The Western Sugar Company Method for purifying beet juice using recycled materials

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1553443A (de) * 1967-02-13 1969-01-10
US4795494A (en) * 1988-03-14 1989-01-03 The Western Sugar Company Beet juice purification system
EP0550786A1 (de) * 1992-01-09 1993-07-14 Limex Verfahren und Vorrichtung zur Zuckerproduktion mit Regenerierung und Rückführung des Karbonationschaum
US5480490A (en) * 1995-02-10 1996-01-02 The Western Sugar Company Method for purifying beet juice using recycled materials

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8328948B2 (en) 2006-01-28 2012-12-11 Sudzucker Aktiengesellschaft Mannheim/Ochsenfurt Purification of raw juice featuring reduced lime consumption
US8568812B2 (en) 2006-01-28 2013-10-29 Sudzucker Aktiengesellschaft Mannheim/Ochsenfurt Low-emission drying of sugar beet chips
US9677144B2 (en) 2006-01-28 2017-06-13 Sudzucker Aktiengesellschaft Mannheim/Ochsenfurt Crude juice purification with reduced lime consumption
WO2013020586A1 (de) * 2011-08-09 2013-02-14 Weber Ultrasonics Gmbh Verfahren und vorrichtung zum reinigen von flüssigkeiten
CN103757142A (zh) * 2014-01-09 2014-04-30 广西都安永鑫糖业有限公司 原生态有色糖品的生产方法
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

Also Published As

Publication number Publication date
ATE257519T1 (de) 2004-01-15
FR2795429B1 (fr) 2001-09-21
DE60007585T2 (de) 2004-11-25
EP1063303B1 (de) 2004-01-07
ES2214232T3 (es) 2004-09-16
DE60007585D1 (de) 2004-02-12
FR2795429A1 (fr) 2000-12-29

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