EP0021364B1 - Carbonatationsverfahren in einer Zuckerfabrik - Google Patents

Carbonatationsverfahren in einer Zuckerfabrik Download PDF

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Publication number
EP0021364B1
EP0021364B1 EP80103455A EP80103455A EP0021364B1 EP 0021364 B1 EP0021364 B1 EP 0021364B1 EP 80103455 A EP80103455 A EP 80103455A EP 80103455 A EP80103455 A EP 80103455A EP 0021364 B1 EP0021364 B1 EP 0021364B1
Authority
EP
European Patent Office
Prior art keywords
carbonation
gas
juice
exhaust gas
heat
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
Application number
EP80103455A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0021364A1 (de
Inventor
Hubert Dr. Schiweck
Günter Witte
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.)
Sueddeutsche Zucker AG
Original Assignee
Sueddeutsche Zucker AG
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 Sueddeutsche Zucker AG filed Critical Sueddeutsche Zucker AG
Priority to AT80103455T priority Critical patent/ATE3305T1/de
Publication of EP0021364A1 publication Critical patent/EP0021364A1/de
Application granted granted Critical
Publication of EP0021364B1 publication Critical patent/EP0021364B1/de
Expired legal-status Critical Current

Links

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

Definitions

  • the carbonation fulfills an important function during juice cleaning.
  • the calcium hydroxide (8-15 g / l) added in excess in the main liming is precipitated as calcium carbonate by introducing carbon dioxide-containing gas (lime kiln gas) at 80-90 ° C, in order to use it as a filter aid to coat the precipitated To produce colloids and a surface for the adsorption of non-invulnerable non-sugar substances and, on the other hand, the calcium hydroxide to a residual content of 0.7-1.4 g / l mud juice, corresponding to a pH value of 10.7-11.6 measured at 20 ° C remove.
  • carbon dioxide-containing gas limestone containing gas
  • the carbonate - hydrogen carbonate dissociation equilibrium which is dependent on the pH value and the temperature, means that the C0 2 7 content of the lime kiln gas cannot be better utilized than 59% in the first carbonation and of 45% in the 2nd carbonation.
  • proposed cascades connected in series on the juice and gas side cannot change these conditions (La Sucrerie Beige 97, 2, 47 (1978).
  • the invention is based, to reduce the need for lime kiln gas (carbonation gas) and to improve the heat balance during juice cleaning the task.
  • the ammonia contained in the exhaust gas from the 1st carbonation and the other volatile organic compounds dissolve in the condensed cold water, which on the one hand prevents odor emissions and on the other hand ammonia water is obtained as a nitrogen source for the biological degradation of sugar factory wastewater.
  • the exhaust gas from the 2nd carbonation has a specific enthalpy of 1,619.5 kJ / kg, so the exhaust gas from the 2nd carbonation contains a heat of 3,174 kJ / 100 kg of processed beets.
  • the exhaust gas from the second carbonation is now drawn in with a compressor, a water ring pump or with a steam or liquid injector and introduced into the first carbonation, then only 3 are used in lime kiln gas to operate the first carbonation in order to achieve the above-mentioned operating states , 50 kg of lime kiln gas is required, the saving of lime kiln gas is therefore 0.58 kg or 14%. 5.11 kg at 82 ° and 1.013 bar of the following composition are obtained from total exhaust gas from the first carbonation in the process according to the invention:
  • the total exhaust gas from the 1st carbonation contains a heat of 5,655 kJ / 100 kg of processed beets.
  • the heat saved simply by taking back the exhaust gas from the 2nd carbonation into the 1st carbonation is 1,732 kJ / 100 kg beet or 0.647 kg steam / 100 kg processed beet (4,213 + 3,174 - 5,655).
  • the heat content of the exhaust gas from the 1st carbonation of 5,655 kJ / 100 kg of processed beets is then used in heat exchangers to heat up colder media, e.g. B. of raw juice of 20 °, of thin juice 1 after flash evaporation of 20 ° or of lime kiln gas of 20 °, to approx. 80-90 ° exploited. This results in approx. 2 kg / 100 kg beet on condensate containing ammonia.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Organic Chemistry (AREA)
  • Treating Waste Gases (AREA)
  • Saccharide Compounds (AREA)
  • Non-Alcoholic Beverages (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Fertilizers (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
EP80103455A 1979-06-22 1980-06-20 Carbonatationsverfahren in einer Zuckerfabrik Expired EP0021364B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80103455T ATE3305T1 (de) 1979-06-22 1980-06-20 Carbonatationsverfahren in einer zuckerfabrik.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2925283 1979-06-22
DE2925283A DE2925283C2 (de) 1979-06-22 1979-06-22 Verfahren zur Wiederverwendung von Abgasen der Carbonatation einer Zuckerfabrik

Publications (2)

Publication Number Publication Date
EP0021364A1 EP0021364A1 (de) 1981-01-07
EP0021364B1 true EP0021364B1 (de) 1983-05-11

Family

ID=6073931

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80103455A Expired EP0021364B1 (de) 1979-06-22 1980-06-20 Carbonatationsverfahren in einer Zuckerfabrik

Country Status (5)

Country Link
US (1) US4424078A (da)
EP (1) EP0021364B1 (da)
AT (1) ATE3305T1 (da)
DE (2) DE2925283C2 (da)
DK (1) DK215480A (da)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK523782A (da) * 1982-11-24 1984-05-25 Danske Sukkerfab Fremgangsmaade og anlaeg til fremstilling af tyksaft ud fra kalkholdig raasalt ved sukkerfremstilling
FR2547595B1 (fr) * 1983-06-20 1985-10-04 Fives Cail Babcock Procede de chauffage des eaux de diffusion en sucrerie de betteraves et installation pour la mise en oeuvre de ce procede
DK0550786T3 (da) * 1992-01-09 1997-10-13 Limex Fremgangsmåde og apparat til sukkerproduktion med regenerering og recirkulation af carbonationsskum.
DE102022205801A1 (de) 2022-06-08 2023-12-14 Südzucker AG Verbessertes carbonatationsverfahren und vorrichtung zu dessen durchführung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR605833A (da) * 1926-06-02
DE16048C (de) * C. NAGEL JUN. in Trotha und N. MHHRLE in Halle a. d. S Neuerungen in der Saturalion schwer saturirbarer Flüssigkeiten (Rübensäfte und Zuckerkalk)
DE583624C (de) * 1933-09-06 Georg Bartsch Verfahren zur Ausfaellung von Kalk und Nichtzuckerstoffen aus Zuckersaeften
DE719370C (de) * 1939-06-06 1942-04-10 Max Stuntz Verfahren und Vorrichtung zum Saturieren mit groesserem Kohlensaeusreueberschuss undgroesserer Gasmenge in Zuckerfabriken
DE2729192C2 (de) * 1977-06-28 1979-06-21 Sueddeutsche Zucker-Ag, 6800 Mannheim Verfahren zur Ausnutzung des Wärmeinhaltes von Kondensaten und/oder Brüden bei der Zuckerherstellung
US4149901A (en) * 1977-10-06 1979-04-17 Morales Adolfo J Pollution control and convection heater

Also Published As

Publication number Publication date
DK215480A (da) 1980-12-23
DE2925283C2 (de) 1983-09-29
ATE3305T1 (de) 1983-05-15
DE2925283A1 (de) 1981-01-08
DE3063097D1 (en) 1983-06-16
EP0021364A1 (de) 1981-01-07
US4424078A (en) 1984-01-03

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