EP0073844A1 - Séchage des cossettes de betteraves sucrières - Google Patents

Séchage des cossettes de betteraves sucrières Download PDF

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Publication number
EP0073844A1
EP0073844A1 EP81106780A EP81106780A EP0073844A1 EP 0073844 A1 EP0073844 A1 EP 0073844A1 EP 81106780 A EP81106780 A EP 81106780A EP 81106780 A EP81106780 A EP 81106780A EP 0073844 A1 EP0073844 A1 EP 0073844A1
Authority
EP
European Patent Office
Prior art keywords
chips
pressed
fine dust
drying
organic substances
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.)
Withdrawn
Application number
EP81106780A
Other languages
German (de)
English (en)
Inventor
Hans Schmidt
Otto Brüdern
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.)
Salzgitter Maschinen und Anlagen AG
Salzgitter Maschinen AG
Original Assignee
Salzgitter Maschinen und Anlagen AG
Salzgitter Maschinen 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 Salzgitter Maschinen und Anlagen AG, Salzgitter Maschinen AG filed Critical Salzgitter Maschinen und Anlagen AG
Priority to EP81106780A priority Critical patent/EP0073844A1/fr
Publication of EP0073844A1 publication Critical patent/EP0073844A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C13—SUGAR INDUSTRY
    • C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
    • C13B20/00—Purification of sugar juices

Definitions

  • the invention relates to a process for the production of sugar beet pulp with a high dry matter content, in which the wet beet pulp obtained from sugar production is mechanically pressed to press pulp and the press pulp is thermally dried, and in which the drying vapors produced during the pulp drying are subjected to a rough dedusting.
  • the invention has for its object to reduce the dust emission of the chip drying and the energy costs for the dewatering of the extracted sugar beet chips.
  • drying vapors leaving the coarse dedusting and laden with fine dust are introduced into a heating chamber of a preheating device or an evaporation device and are condensed therein, the predominant amount of fine dust being bound to the condensate and only the remaining amount of fine dust being removed with the exhaust gas will.
  • the residual energy of the drying vapors in the heating chamber of the preheating device or the evaporation device is used and, on the other hand, a very effective wet dedusting of the drying vapors is achieved without additional water supply.
  • the condensate laden with fine dust is processed in a sewage treatment plant.
  • the condensate is e.g. introduced into a sedimentation basin for sedimentation of the dust sludge.
  • Another embodiment of the invention is characterized in that in a manner known per se (DE-PS 27 31 285) the pressing chips prior to their thermal drying tion with one or more water-extracting organic substances, e.g. molasses and salts, and the mixture is mechanically pressed again, and that the resulting press water, which contains part of the organic substances and solids, is filtered to separate the solids and then filtered in the Evaporation device is evaporated, the vapors being condensed to recover water and the thickened organic substances are recirculated in a manner known per se (DE-PS 27 31 285) for renewed mixing with pressed chips before their mechanical pressing again. This measure significantly reduces the energy consumption for the chip drainage.
  • DE-PS 27 31 285 the pressing chips prior to their thermal drying tion with one or more water-extracting organic substances, e.g. molasses and salts, and the mixture is mechanically pressed again, and that the resulting press water, which contains part of the organic substances and solids, is filtered to separate the
  • the residual energy of the drying vapors is used here in an optimal way to thicken the organic substances to be mixed with the press chips.
  • iron sulfate can be used as the organic substance.
  • the solids to be filtered are essentially fine pulp that goes to waste.
  • a preheater 1 with a V or Reginarmhunt 2 and a heating chamber 3 is shown.
  • a flowable medium to be heated is supplied to the preheating chamber 2 through a line 4 and is discharged therefrom via a line 5 after heating.
  • the drying vapors of a chip drying system 7, shown schematically in FIG. 3, are fed to the heating chamber 3 via a line 6.
  • This drying vapors contain in addition to the the withdrawn in the pulp drying plant 7tient- b rachten pressed chips Wasserdampfnoch.die burner flue gases of the pulp drying plant 7 and optionally the exhaust gases of the furnace of the steam generation system of the sugar factory.
  • This furnace emissions be bought l 180 ° C egentlich admixed as the mixing of gases, for example, the furnace gases of the pulp drying plant 7, such as the combustion temperature is 1700 ° C.
  • a gas temperature of 800 to 1000 ° C. is set at the inlet of a drying drum 33.
  • the drying vapors enter the heating chamber 3 from the line 6 at a temperature of, for example, 120 ° C. and have a dust content of, for example, 150 mg / Nm 3 moist (normal cubic meter, based on moist exhaust gas).
  • the drying vapors condense s ming in the heating chamber 3.
  • the overwhelming proportion of fine dust of the drying vapors is bound to the condensate and in the
  • Condensate suspended through a line 8 is discharged into a settling basin 9 of a sewage treatment plant 10.
  • the exhaust gas leaves the heating chamber 3 through a line 11 with a relatively low residual fine dust content of about 20 to 40 mg / Nm 3 moist, the rest of the invert gases.
  • the line 11 leads to an exhaust gas chimney, not shown in detail.
  • FIG. 2 shows an evaporation device 12 with an evaporation chamber 13, to which a flowable medium to be evaporated or thickened is fed via a line 14. After evaporation, the vaporous portion of the medium is drawn off from the evaporation chamber 13 through a line 15. It is e.g. vapors which are fed to a condenser (not shown) for the recovery of water.
  • a condenser not shown
  • a drainage system 17 for sugar beet pulp is shown schematically.
  • the extracted wet beet chips from sugar production are introduced into a first mechanical chip press 19 via a transport element 18.
  • the resulting press water is normally returned via a line 20 for extraction.
  • the pressed chips reach a mixing device 22 via a transport element 21 where they are mixed with organic substances, e.g. Molasses or salts are mixed, which are to extract water from the press chips.
  • centrifuge drain molasses are fed to the mixing device 22 through a line 23.
  • the mixture of pressed chips and organic substances produced in the mixing device 22 reaches a second mechanical shredding press 25 via a transport element 24.
  • the press water obtained therein contains a part of the added organic substances in dissolved form and also suspended solids, in particular fine pulp.
  • This press water is fed through a line 26 into a filter 27, where the solids are separated and discharged through a line 28 and fed to the waste.
  • the liquid component of the press water passes via line 14 into the evaporation chamber 13 of the evaporation device 12.
  • the vapors escape through line 15, while the thickened organic substances, in the aforementioned example the molasses, via line 16 into line 23 and thus can be entered into the mixer 22.
  • the mixing ratio of pressing chips in the transport element 21, centrifuge drain molasses in line 23 and thickened molasses in line 16 can be produced and maintained depending on the technological conditions and requirements by means known per se, not shown.
  • the beet wet chips in the transport element 18 have e.g. 8% by weight TS, while the press chips in the transport element 21 have about 20 to 25% by weight TS.
  • Compressed chips are produced in the second chip press 25 and fed into a chip storage hopper 30 via a transport element 29, which e.g. 35 to 45 wt .-% TS and contain the yeast part of the mixed organic substances bound. These pressed chips are fed via a line 31 from the chip storage bunker 30 into a drying drum 33 of the chip drying system 7 rotating around a longitudinal axis 32. Details of the chip drying system 7 can be found in the aforementioned brochure W 351.679.1000 A from the applicant.
  • heating gas is generated and in cocurrent with the pressing chips entered through the line 31 through the drying drum 33.
  • the heating gases generated in the heating gas generator 34 can be admixed with the dashed line 35, combustion gases from a steam generator of the sugar factory, not shown.
  • the gas temperature is 800 to 1000 ° C.
  • the pressed chips which have been subsequently thermally dried in this way, are discharged through a line 36 from a collecting housing of the chip drying system 7, while the drying vapors are drawn off in the direction of an arrow 38 by a vapor fan 39 and pressed by a coarse dedusting system 40.
  • the drying vapors still loaded with fine dust leave the coarse dedusting system 40, are collected in line 6 and pass through line 6 into the heating chamber 3 of the evaporation device 12.
EP81106780A 1981-08-29 1981-08-29 Séchage des cossettes de betteraves sucrières Withdrawn EP0073844A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP81106780A EP0073844A1 (fr) 1981-08-29 1981-08-29 Séchage des cossettes de betteraves sucrières

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP81106780A EP0073844A1 (fr) 1981-08-29 1981-08-29 Séchage des cossettes de betteraves sucrières

Publications (1)

Publication Number Publication Date
EP0073844A1 true EP0073844A1 (fr) 1983-03-16

Family

ID=8187879

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81106780A Withdrawn EP0073844A1 (fr) 1981-08-29 1981-08-29 Séchage des cossettes de betteraves sucrières

Country Status (1)

Country Link
EP (1) EP0073844A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012045388A1 (fr) * 2010-10-08 2012-04-12 Südzucker Aktiengesellschaft Mannheim/Ochsenfurt Produit colloïdal, procédé de fabrication et utilisation dudit produit colloïdal

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2731285B1 (de) * 1977-07-11 1979-01-11 Franken Zuckerfab Herstellung von melassierten Ruebenschnitzeln
DE2900362A1 (de) * 1979-01-05 1980-07-17 Industrieprojekt Ag Verfahren und anlage zum trocknen von zuckerruebenschnitzeln
DE2926663A1 (de) * 1979-07-02 1981-01-15 Gifa Planungsgesellschaft Fuer Verfahren und vorrichtung zur abtrennung von schadstoffen aus abgasen, insbesondere bei der holzspaenetrocknung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2731285B1 (de) * 1977-07-11 1979-01-11 Franken Zuckerfab Herstellung von melassierten Ruebenschnitzeln
DE2900362A1 (de) * 1979-01-05 1980-07-17 Industrieprojekt Ag Verfahren und anlage zum trocknen von zuckerruebenschnitzeln
DE2926663A1 (de) * 1979-07-02 1981-01-15 Gifa Planungsgesellschaft Fuer Verfahren und vorrichtung zur abtrennung von schadstoffen aus abgasen, insbesondere bei der holzspaenetrocknung

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012045388A1 (fr) * 2010-10-08 2012-04-12 Südzucker Aktiengesellschaft Mannheim/Ochsenfurt Produit colloïdal, procédé de fabrication et utilisation dudit produit colloïdal
CN103228153A (zh) * 2010-10-08 2013-07-31 甜糖（曼海姆/奥克森富特）股份公司 胶体产品及其制造方法和应用
EA022585B1 (ru) * 2010-10-08 2016-01-29 Зюдцукер Акциенгезелльшафт Маннхайм/Окзенфурт Коллоидный продукт, способ его получения и его применение
CN103228153B (zh) * 2010-10-08 2016-05-25 甜糖（曼海姆/奥克森富特）股份公司 胶体产品及其制造方法和应用
US9410215B2 (en) 2010-10-08 2016-08-09 Sudzucker Aktiengesellschaft Mannheim/Ochsenfurt Colloid product, method for producing same and use thereof

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Inventor name: SCHMIDT, HANS

Inventor name: BRUEDERN, OTTO