EP0899344B1 - Process and apparatus for producing juice from sugar cane - Google Patents
Process and apparatus for producing juice from sugar cane Download PDFInfo
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- EP0899344B1 EP0899344B1 EP98113070A EP98113070A EP0899344B1 EP 0899344 B1 EP0899344 B1 EP 0899344B1 EP 98113070 A EP98113070 A EP 98113070A EP 98113070 A EP98113070 A EP 98113070A EP 0899344 B1 EP0899344 B1 EP 0899344B1
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- beet
- juice
- sugar
- separating
- separating device
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- C—CHEMISTRY; METALLURGY
- C13—SUGAR INDUSTRY
- C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
- C13B5/00—Reducing the size of material from which sugar is to be extracted
- C13B5/06—Slicing sugar beet
-
- 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
Definitions
- the invention relates to a method and an installation for extracting juice from sugar beet for industrial purposes Sugar production, in which the previously washed Sugar beets are crushed and the crushed Beet mass separated into a solid and a liquid phase becomes.
- a third problem is with the beets in the process introduced bacteria that the beets during their storage do nothing because they are during the beet campaign prevailing outside temperatures are idle, the but at the temperatures of juice making by the Heat in the extraction tower become very active and not only eat sugar, but through their metabolic products make the juice sour what you add by adding of formalin has to compensate. This offer is over questionable for various reasons.
- US 3477873 describes a method for extraction of juice from sugar beet by crushing Separation with a press, leaching, further pressing and cleaning
- the invention avoids the disadvantages of the prior art Technology. It is the object of the invention with simple Means the process of juice production at continuous To design the procedure so that the Juice extraction from those who dominate the beet campaign Temperatures and therefore energetically essential runs cheaper and that the contained in the beet Protein can be fed to the animal diet can, and execute the process so that the with the Sugar beet bacteria introduced into the process cannot take effect.
- the invention is that the size reduction Sugar beet at normal outside temperature during the Beet campaign takes place through a grinding process in which the cells are mechanically disrupted, but not completely be torn apart that the ground Beet mass at the same temperature in a separation stage, e.g. a centrifuge or press, in their liquid Part and their fixed part separates that one then the fixed portion of a further grinding process subjects, in which the cells are further unlocked and then the ground product at the same temperature in another separation device, e.g. one High performance centrifuge, again in a liquid and separates a fixed part that the cold obtained Juice now quickly heated to about 90 °, briefly sterilized with it, and then in a small amount Precipitants, e.g. an electrolyte, admixed and in this way the protein in the juice fails, that you remove from the juice in a separation stage, and that the juice obtained is now for further processing feeds while the precipitated protein added to the separated solid part again.
- a separation stage e.g.
- This process can be operated continuously uses considerably less energy because only the one received Juice, but not solid matter and in the extraction tower added water must be heated, the The use of lime is eliminated, the use of chemicals has decreased, in particular the use is no longer available of formalin and sulfur dioxide. It will Protein as such is separated and can in the course of the process can be used as cattle feed by adding up to the low sugar residues otherwise only contain fiber Solid mass is mixed.
- a system is used to carry out this method for extracting juice from sugar beet for sugar production with a beet washer, a beet shredder and a separator, which is characterized in that the beet shredder a grinder or grater is through their grinding process, that at normal outside temperature during the beet campaign, the cells are made mechanically open minded, but not completely torn apart be that of the beet grinder a separator, preferably a centrifuge or press, which is the crushed Beet mass in a liquid portion and a solid Part separates that a collection vessel for the liquid part or a pipeline is provided and that to the output of the separator for the fixed portion another shredder connected and this another separation device, preferably in the form of a centrifuge, downstream is that a device for the short-term for the juice obtained High heating and a station for adding electrolytes and protein precipitation are downstream that this Station a separator for separating the precipitated protein (a static stripper) is connected downstream and that this facility a station to
- the resulting pectin can also be obtained by separating it from the process.
- the essence of the invention is based on an in the drawing schematically illustrated embodiment explained in more detail.
- the drawing shows a block diagram the system according to the invention:
- Washed sugar beets are transported via the conveyor belt 1 a mill 2 or grater fed, the screw conveyor feeds the sugar beet to the grinder or grater.
- the cells of the Sugar beet torn open and mechanically disrupted, but not completely destroyed.
- From mill 2 or The crushed beet mass is grated using a Conveyor 3 of a first separation stage in the form of the centrifuge 4 supplied from which the liquid product portion Juice to the heat exchanger serving as a heating device 7 is supplied, in which the beet juice on heated to a temperature of around 90 ° C in a short time becomes.
- the solid obtained in the first separation stage 4 with the help of another sponsor Mill 5 fed and ground in it so that the cells are fully unlocked.
- the received one the liquid part of this mass also becomes the Heating device 7 supplied after being in the Separation stage 6 was separated from the solids content.
- the one heated to about 90 ° C in the heater Juice passes through a mixing device 8, in which Juice is a means of precipitating protein by means of Feed pump 9 is supplied.
- the juice then flows in a calming vessel 10, where the protein flocculates.
- the downstream separator 11 separates the protein and by means of the conveyor 12 to the mixer 13 fed.
- the juice running out of the separator 11 is then processed into sugar products, such as granulated sugar, liquid sugar, rock candy, etc.
Description
Die Erfindung betrifft ein Verfahren und eine Anlage zur Gewinnung von Saft aus Zuckerrüben für die industrielle Zuckerherstellung, bei dem die zuvor gewaschenen Zuckerrüben zerkleinert werden und die zerkleinerte Rübenmasse in eine feste und eine flüssige Phase getrennt wird.The invention relates to a method and an installation for extracting juice from sugar beet for industrial purposes Sugar production, in which the previously washed Sugar beets are crushed and the crushed Beet mass separated into a solid and a liquid phase becomes.
Die Verarbeitung von Zuckerrüben zu Zucker ist im Laufe der letzten Jahrzehnte ein großindustrieller Prozeß geworden, bei dem sehr viel Energie aufgewandt werden muß und bei dem neben Zucker auch weitere Produkte anfallen. Diese werden zum Teil als Tierfutter verwendet, die als Tierfutter wertvollsten Bestandteile der Zukkerrübe fallen jedoch aus verfahrenstechnischen Gründen der Vernichtung anheim.The processing of sugar beet into sugar is ongoing of the past few decades has become a large-scale industrial process where a lot of energy has to be used and in addition to sugar, there are also other products. These are partly used as animal feed, the most valuable components of sugar beet as animal feed fall for procedural reasons of annihilation.
In diesem großindustriellen Prozeß werden zuvor gründlich gewaschene Zuckerrüben geschnitzelt und die Rübenschnitzel in beheizten Extraktionstürmen mit Wasser ausgelaugt. Dazu muß erhitztes Frischwasser bereitgestellt werden. Bei dieser Behandlung wird die gesamte Rübenmasse auf die Extraktionstemperatur gebracht. Der erhaltene heiße Saft weist durch diese Behandlung einen höheren Wassergehalt als der in der Rübe befindliche Saft auf.In this large-scale industrial process, be thorough beforehand washed sugar beet and the beet pulp in heated extraction towers with water drained. To do this, heated fresh water must be provided become. With this treatment the whole Beet mass brought to the extraction temperature. The hot juice obtained shows a through this treatment higher water content than that in the beet Juice on.
Bei dieser Behandlung der Rübenschnitzel treten einige Probleme auf, deren Lösung besondere Maßnahmen erfordert: Unter diesen Problemen sind es insbesondere drei, die den Prozeßablauf in eine nicht immer erwünschte Richtung führen: Das eine Problem ist das in der Rübe vorhandene Eiweiß, das man im Prozeß, und zwar im beheizten Extraktionsturm, zu Aminosäuren abbaut, die es dann erforderlich machen, den pH-Wert durch Zugabe von Calziumhydroxid zu steuern und die Aminosäuren aus dem erzeugten Saft zu entfernen. Denn die Aminosäuren verändern den pH-Wert, sind Ursache einer Inversion der Sacharose, führen damit zu Zuckerverlusten und sind hinderlich bei der Zukkerkristallisation. Die im Prozeß erzeugten Aminosäuren werden mit Kalk gebunden und das an sich als Tierfutter verwertbare Eiweiß geht damit einer sinnvollen weiteren Nutzung verloren. Die Aminosäuren werden mit dem Kalk auf landwirtschaftliche Äcker ausgetragen und haben dort kaum einen Düngewert, während die in den Rüben enthaltenen Eiweiße ein an sich wertvolles Tierfutter sind, das bei diesem Verfahren verlorengeht.In this treatment of beet pulp, some occur Problems whose solution requires special measures: Among these problems, there are three in particular, which the process flow into a not always desired Lead direction: One problem is the protein in the beet, that in the process, in the heated extraction tower, breaks down to amino acids, which it then requires make the pH by adding calcium hydroxide control and the amino acids from the juice produced remove. Because the amino acids change the pH, are the cause of an inversion of sucrose, lead with it to sugar losses and are a hindrance to sugar crystallization. The amino acids generated in the process are bound with lime and that in itself as animal feed usable protein is a sensible one Usage lost. The amino acids are made with the lime on agricultural fields and have hardly any fertilizer there, while those in the beets contain a valuable animal feed are lost in this process.
Ein anderes Problem ist das in den Rüben enthaltene Pektin, das aus dem Saft entfernt werden muß, weil es bei den Prozeßtemperaturen dickflüssig wird und in dem bisherigen Prozeßablauf zu einem schnellen Zusetzen der eingesetzten Filter führt. Der Rohsaft kann daher nicht filtriert werden, ein weiterer Grund für den Zusatz von Calziumhydroxid, um die Pektine abzubauen. Another problem is that contained in the beets Pectin that must be removed from the juice because it is becomes viscous at the process temperatures and in which previous process flow for a fast clogging of used filter leads. The raw juice can therefore not are filtered, another reason for the addition of Calcium hydroxide to break down the pectins.
Ein drittes Problem sind mit den Rüben in den Prozeß eingeschleppte Bakterien, die den Rüben bei ihrer Lagerung nichts tun, weil sie bei den während der Rübenkampagne herrschenden Außentemperaturen untätig sind, die aber bei den Temperaturen der Saftherstellung durch die Wärme im Extraktionsturm sehr aktiv werden und nicht nur Zucker fressen, sondern durch ihre Stoffwechselprodukte den Saft sauer machen, was man durch die Zugabe von Formalin zu kompensieren hat. Diese Zugabe ist aus verschiedenen Gründen bedenklich.A third problem is with the beets in the process introduced bacteria that the beets during their storage do nothing because they are during the beet campaign prevailing outside temperatures are idle, the but at the temperatures of juice making by the Heat in the extraction tower become very active and not only eat sugar, but through their metabolic products make the juice sour what you add by adding of formalin has to compensate. This encore is over questionable for various reasons.
Diese energieaufwendige und mit den aufgezeigten Problemen beladene "heiße" Saftherstellung war im Laufe der Jahre wegen der immer größer werdenden Verarbeitungsmengen an Zuckerrüben in den Zuckerfabriken notwendig geworden, um den Zuckerfabrikationsprozeß möglichst kontinuierlich ablaufen zu lassen, obwohl die industrielle Zuckerfabrikation einmal mit einer "kalten" Saftherstellung begonnen hatte, wie sie heute noch bei der Herstellung von Speiseöl und Obstsäften teilweise angewandt wird.This energy-intensive and with the problems shown laden "hot" juice making was in progress of the years because of the ever increasing processing quantities of sugar beets in the sugar factories become the sugar manufacturing process as possible to run continuously, even though the industrial sugar manufacturing once with a "cold" Juicing had started like it does today partly in the production of cooking oil and fruit juices is applied.
US 3477873 beschreibt ein verfahren zur Gewinnung von saft aus Zuckerrüben durch Zerkleinerung Trennung mit einer Presse, Laugung, weitere Pressung und ReinigungUS 3477873 describes a method for extraction of juice from sugar beet by crushing Separation with a press, leaching, further pressing and cleaning
Die Erfindung vermeidet die Nachteile des Standes der Technik. Es ist die Aufgabe der Erfindung, mit einfachen Mitteln den Prozeß der Saftherstellung bei kontitinuierlichem Verfahrensablauf so zu gestalten, daß die Saftgewinnung bei den während der Rübenkampagne herrschenden Temperaturen und dadurch energetisch wesentlich günstiger abläuft und daß das in der Rübe enthaltene Eiweiß der tierischen Ernährung zugeführt werden kann, und den Prozeß so auszuführen, daß die mit den Zuckerrüben in den Prozeß eingeschleppten Bakterien nicht wirksam werden können.The invention avoids the disadvantages of the prior art Technology. It is the object of the invention with simple Means the process of juice production at continuous To design the procedure so that the Juice extraction from those who dominate the beet campaign Temperatures and therefore energetically essential runs cheaper and that the contained in the beet Protein can be fed to the animal diet can, and execute the process so that the with the Sugar beet bacteria introduced into the process cannot take effect.
Die Erfindung besteht darin, daß die Zerkleinerung der Zuckerrüben bei normaler Außentemperatur während der Rübenkampagne durch einen Mahlvorgang erfolgt, bei dem die Zellen mechanisch aufgeschlossen, aber nicht völlig auseinandergerissen werden, daß man dann die gemahlene Rübenmasse bei derselben Temperatur in einer Trennstufe, z.B. einer Zentrifuge oder Presse, in ihren flüssigen Anteil und ihren festen Anteil trennt, daß man anschließend den festen Anteil einem weiteren Mahlvorgang unterwirft, bei dem die Zellen weiter aufgeschlossen werden, und dann das Mahlprodukt bei derselben Temperatur in einer weiteren Trennvorrichtung, z.B. einer Hochleistungszentrifuge, wieder in einen flüssigen und einen festen Teil trennt, daß man den erhaltenen kalten Saft nun schnell auf etwa 90° kurzzeitig erhitzt, ihn damit sterilisiert, und ihm dann in geringer Menge ein Ausfällmittel, z.B. einen Elektrolyten, beimischt und auf diese Weise das im Saft befindliche Eiweiß ausfällt, das man in einer Trennstufe aus dem Saft entfernt, und daß man den erhaltenen Saft nun der Weiterverarbeitung zuführt, während man das ausgefällte Eiweiß dem abgetrennten festen Teil wieder zumischt.The invention is that the size reduction Sugar beet at normal outside temperature during the Beet campaign takes place through a grinding process in which the cells are mechanically disrupted, but not completely be torn apart that the ground Beet mass at the same temperature in a separation stage, e.g. a centrifuge or press, in their liquid Part and their fixed part separates that one then the fixed portion of a further grinding process subjects, in which the cells are further unlocked and then the ground product at the same temperature in another separation device, e.g. one High performance centrifuge, again in a liquid and separates a fixed part that the cold obtained Juice now quickly heated to about 90 °, briefly sterilized with it, and then in a small amount Precipitants, e.g. an electrolyte, admixed and in this way the protein in the juice fails, that you remove from the juice in a separation stage, and that the juice obtained is now for further processing feeds while the precipitated protein added to the separated solid part again.
Dieses Verfahren läßt sich kontinuierlich betreiben, es verbraucht erheblich weniger Energie, weil nur der erhaltene Saft, nicht aber Feststoffmasse und im Extraktionsturm zugefügtes Wasser erhitzt werden müssen, der Einsatz von Kalk entfällt, der Einsatz an Chemikalien ist geringer geworden, insbesondere entfällt die Verwendung von Formalin und Schwefeldioxid. Dabei wird das Eiweiß als solches im Prozeßverlauf abgetrennt und kann als Viehfutter verwendet werden, indem es der bis auf geringe Zuckerreste sonst nur noch Ballaststoffe enthaltenen Feststoffmasse zugemischt wird.This process can be operated continuously uses considerably less energy because only the one received Juice, but not solid matter and in the extraction tower added water must be heated, the The use of lime is eliminated, the use of chemicals has decreased, in particular the use is no longer available of formalin and sulfur dioxide. It will Protein as such is separated and can in the course of the process can be used as cattle feed by adding up to the low sugar residues otherwise only contain fiber Solid mass is mixed.
Dadurch ist dieses Verfahren nicht nur technisch dem mit Extraktionsturm arbeitenden bisherigen Verfahren überlegen, es arbeitet im Betrieb kostengünstiger und ist auch bei der Anschaffung des Maschinenparkes in den Kosten günstiger.As a result, this process is not only technically previous methods working with extraction tower consider it works cheaper and in operation is also in the purchase of the machinery in the Cost cheaper.
Bei diesem Verfahren ist es vorteilhaft, wenn man den in beiden Trennstufen erhaltenen Saft vor der kurzzeitigen Erhitzung miteinander mischt und somit dieselben Maschinen für die Verarbeitung der aus den beiden Verarbeitungsstufen anfallenden Säfte benutzt.With this method, it is advantageous if the Juice obtained in both separation stages before the short-term Heating mixes with each other and thus the same Machines for processing the two processing stages resulting juices used.
Um Verfärbungen des Saftes im Produktionsablauf zu vermeiden, die auftreten können, wenn der Saft aus irgendwelchen Gründen längere Zeit in Berührung mit atmosphärischer Luft stehen bleibt, ist es zweckmäßig, daß man die Behandlung der Rübenmasse bis zu ihrer Erhitzung unter verminderter Sauerstoffanwesenheit durchführt.To avoid discoloration of the juice in the production process, which can occur if the juice comes from any For a long time in contact with atmospheric If air stops, it is advisable that one the treatment of the beet mass until it is heated carried out under reduced oxygen presence.
Zur Durchführung dieses Verfahrens dient eine Anlage zur Gewinnung von Saft aus Zuckerrüben für die Zuckerherstellung mit einer Rübenwaschvorrichtung, einer Rübenzerkleinerungsvorrichtung und einer Trennvorrichtung, die sich dadurch auszeichnet, daß die Rübenzerkleinerungsvorrichtung eine Mühle oder Reibe ist, durch deren Mahlvorgang, der bei normaler Außentemperatur während der Rübenkampagne erfolgt, die Zellen mechanisch aufgeschlossen, aber nicht völlig auseinandergerissen werden, daß der Rübenzerkleinerungsvorrichtung eine Trennvorrichtung, vorzugsweise eine Zentrifuge oder Presse, nachgeschaltet ist, die die zerkleinerte Rübenmasse in einen flüssigen Anteil und einen festen Anteil trennt, daß für den flüssigen Anteil ein Sammelgefäß oder eine Rohrleitung vorgesehen ist und daß an den Ausgang der Trennvorrichtung für den festen Anteil eine weitere Zerkleinerungsvorrichtung angeschlossen und dieser eine weitere Trennvorrichtung, vorzugsweise in Form einer Zentrifuge, nachgeschaltet ist, daß für den erhaltenen Saft eine Einrichtung zur kurzzeitigen Hocherhitzung und eine Station zur Elektrolytzugabe und Eiweißausfällung nachgeschaltet sind, daß dieser Station ein Separator zur Abtrennung des ausgefällten Eiweiß (ein statischer Absetzer) nachgeschaltet ist und daß dieser Einrichtung eine Station zur Übergabe des nun reinen Saftes an die Anlage zur Weiterverarbeitung zu Zucker nachgeschaltet ist. In einem weiteren Verfahren wird ein Flockungsmittel zum Saft beigemischt.A system is used to carry out this method for extracting juice from sugar beet for sugar production with a beet washer, a beet shredder and a separator, which is characterized in that the beet shredder a grinder or grater is through their grinding process, that at normal outside temperature during the beet campaign, the cells are made mechanically open minded, but not completely torn apart be that of the beet grinder a separator, preferably a centrifuge or press, which is the crushed Beet mass in a liquid portion and a solid Part separates that a collection vessel for the liquid part or a pipeline is provided and that to the output of the separator for the fixed portion another shredder connected and this another separation device, preferably in the form of a centrifuge, downstream is that a device for the short-term for the juice obtained High heating and a station for adding electrolytes and protein precipitation are downstream that this Station a separator for separating the precipitated protein (a static stripper) is connected downstream and that this facility a station to hand over the now pure juice downstream of the plant for further processing to sugar is. Another method uses a flocculant added to the juice.
Dieser maschinelle Aufwand ist verglichen mit den bisherigen Produktionsanlagen gering, kostengünstig einzukaufen, weil die benötigten Maschinen serienmäßig bereits für andere Zwecke hergestellt werden und kostengünstig mit geringem Energieaufwand zu betreiben sind. Dabei lassen sich diese Anlagen auch in kleinerem Stil ohne wirtschaftliche Einbußen betreiben, so daß es möglich wird, die Saftherstellung dezentral in kleineren Anlagen durchzuführen und die Zuckerkristallisation anderen Orts zentral durchzuführen. Das würde zu einer weiteren Kosten- und Energieeinsparung führen, denn die großen Mengen Zuckerrüben wären nur kurze Strecken zu transportieren, die als Viehfutter und Düngemittel zu verwendenden Abfallprodukte ebenfalls nur kurze Strekken, während der erzeugte Saft, in seiner Menge nur ein Bruchteil der Rübenmenge, mit weniger Aufwand zur Weiterverarbeitung zu transportieren wäre.This machine effort is compared to the previous one To buy production facilities small, inexpensive, because the required machines already come as standard can be made for other purposes and inexpensive can be operated with little energy. These systems can also be used on a smaller scale operate without economic loss, making it possible juice production is decentralized into smaller ones To carry out plants and other sugar crystallization To be carried out centrally. That would become one lead to further cost and energy savings because the large amounts of sugar beet would only be short distances transport that as cattle feed and fertilizer too waste products using also only short distances, while the juice produced, only one in its amount Fraction of the beet volume, with less effort for further processing to be transported.
Für die Eiweißnutzung ist es nutzvoll, daß der Einrichtung zur Abtrennung des ausgefällten Eiweißes eine zu einem Feststoffmasse verarbeitenden Mischer führende Fördervorrichtung nachgeschaltet ist.For protein use, it is useful that the facility to separate the precipitated protein a mixer processing solid mass Conveyor device is connected downstream.
Es besteht die Möglichkeit, daß den Zentrifugen eine mechanische Preßvorrichtung vorgeschaltet ist.There is a possibility that a centrifuge mechanical pressing device is connected upstream.
Das anfallende Pektin kann ebenfalls gewonnen werden, indem es aus dem Verfahrensgang abgetrennt wird.The resulting pectin can also be obtained by separating it from the process.
Es fällt weniger Melasse an. Diese ist in einem für die menschliche Ernährung geeigneten Zustand.There is less molasses. This is in one for you human nutrition appropriate condition.
Das Wesen der Erfindung ist nachstehend anhand eines in der Zeichnung schematisch dargestellten Ausführungsbeispieles näher erläutert. Die Zeichnung zeigt ein Blockbild der erfindungsgemäßen Anlage: The essence of the invention is based on an in the drawing schematically illustrated embodiment explained in more detail. The drawing shows a block diagram the system according to the invention:
Über das Förderband 1 werden gewaschene Zuckerrüben
einer Mühle 2 oder Reibe zugeführt, deren Schneckenförderer
die Zuckerrüben dem Mahlwerk oder der Reibe zuführt.
Bei diesem Mahlvorgang werden die Zellen der
Zuckerrüben angerissen und mechanisch aufgeschlossen,
aber nicht vollständig zerstört. Aus der Mühle 2 oder
Reibe wird die zerkleinerte Rübenmasse mittels eines
Förderers 3 einer ersten Trennstufe in Form der Zentrifuge
4 zugeführt, aus der der flüssige Produktanteil
Saft dem als Erhitzungsvorrichtung dienenden Wärmetauscher
7 zugeführt wird, in welchem der Rübensaft auf
eine Temperatur von etwa 90°C in kurzer Zeit erhitzt
wird. Der in der ersten Trennstufe 4 anfallende Feststoff
wird mittels eines weiteren Förderers einer weiteren
Mühle 5 zugeführt und in dieser so gemahlen, daß
die Zellen vollständig aufgeschlossen werden. Der erhaltene
flüssige Teil dieser Masse wird ebenfalls der
Erhitzungsvorrichtung 7 zugeführt, nachdem er in der
Trennstufe 6 von dem Feststoffanteil getrennt wurde.
Der in der Erhitzungsvorrichtung auf etwa 90°C erhitzte
Saft durchläuft eine Mischvorrichtung 8, in der dem
Saft ein Mittel zur Ausfällung des Eiweißes mittels der
Förderpumpe 9 zugeführt wird. Der Saft fließt dann in
ein Beruhigungsgefäß 10, wo das Eiweiß ausflockt. Im
nachgeschalteten Separator 11 wird das Eiweiß abgetrennt
und mittels der Fördereinrichtung 12 dem Mischer
13 zugeführt. Der aus dem Separator 11 laufende Saft
wird dann der Weiterverarbeitung zu Zuckerprodukten,
wie Kristallzucker, Flüssigzucker, Kandis etc. zugeführt.Washed sugar beets are transported via the conveyor belt 1
a
Claims (16)
- Method for extracting juice from sugar beet for industrial sugar extraction, in which the previously washed sugar beet is crushed and the crushed beet mass is separated into a solid and liquid mass, characterised in that the sugar beet is crushed at normal outside temperature during the beet campaign by a grinding process, in which the cells are mechanically opened but not completely torn apart, in that the ground beet mass is then separated into its liquid fraction and its solid fraction at the same temperature in a separating device, in that the solid fraction is then subjected to a further grinding process, in which the cells are destroyed, and then the ground product is separated again at the same temperature in a further separating device into a liquid and a solid portion, in that the cold juice obtained is now briefly heated to about 90° and a small quantity of precipitation agent is then added to it and the protein located in the juice is precipitated in this manner and is removed from the juice in a separation stage, and in that the juice obtained is now supplied for further processing, while the precipitated protein is again added to the separated solid portion.
- Method according to claim 1, characterised in that the juice obtained in the two separation stages is mixed together prior to the brief heating.
- Method according to claim 1, characterised in that the processing of the beet mass until it is heated is carried out with a substantially reduced oxygen presence.
- Method according to claim 1, characterised in that a small portion of the juice from the first separation stage is added to the ground product before the second separation stage.
- Apparatus for extracting juice from sugar beet with a beet washing device, a beet crushing device and a separating device, characterised in that the beet crushing device (2) is a mill, owing to the grinding process of which, which takes place at the normal outside temperature during the beet campaign, the cells are mechanically opened, but not completely tom apart, in that a separating device (4), preferably a centrifuge, is connected downstream from the beet crushing device (2), the centrifuge separating the crushed beet mass into a liquid fraction and a solid fraction, in that a collecting vessel or a pipeline is provided for the liquid fraction and in that a further mill (5) is connected to the output of the separating device for the solid fraction, and a further separating device (6), preferably in the form of a centrifuge, is connected downstream from this mill (5), in that, for the juice obtained, a device (7) for brief heating and a station (8) for electrolyte addition and protein precipitation (10) are connected downstream, in that a separator (11) for separating the precipitated protein is connected downstream from this station (8) and in that a station for transferring the now pure juice to the apparatus for further processing into sugar is connected downstream from this device (11).
- Apparatus according to claim 5, characterised in that the crushing device (2) is a grater.
- Apparatus according to claim 5, characterised in that the crushing device (2) and a separating device (4) are a combination of a grater and a centrifuge.
- Apparatus according to claim 5, characterised in that the separating device (4) is a press.
- Apparatus according to claim 5, characterised in that the separating device (6) is a press.
- Apparatus according to claim 5, characterised in that the precipitation agent is an electrolyte.
- Apparatus according to claim 5, characterised in that the precipitation agent is an acid.
- Apparatus according to claim 5, characterised in that a flocculating agent is added to the juice and the separating device (11) is a static precipitator.
- Apparatus according to claim 5, characterised in that a conveying device (12) leading to a mixer (13) processing the solid fraction is connected downstream from the device (11) for separating the precipitated protein.
- Apparatus according to claim 5, characterised in that the outputs of the two centrifuges (4, 6) are connected together and are connected to the input of the heating device (7).
- Apparatus according to claim 5, characterised in that a low-oxygen atmosphere prevails in the apparatus from the crushing device (2) up to the heating device (7).
- Apparatus according to claim 5, characterised in that a mechanical pressing device is connected upstream from the centrifuges (4, 6).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19736080 | 1997-08-20 | ||
| DE19736080A DE19736080A1 (en) | 1997-08-20 | 1997-08-20 | Process and plant for extracting juice from sugar beet |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0899344A2 EP0899344A2 (en) | 1999-03-03 |
| EP0899344A3 EP0899344A3 (en) | 2002-10-02 |
| EP0899344B1 true EP0899344B1 (en) | 2004-05-26 |
Family
ID=7839532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98113070A Expired - Lifetime EP0899344B1 (en) | 1997-08-20 | 1998-07-14 | Process and apparatus for producing juice from sugar cane |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0899344B1 (en) |
| DE (2) | DE19736080A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10144486C1 (en) * | 2001-09-10 | 2003-04-24 | Karlsruhe Forschzent | Process for the continuous non-thermal digestion and pasteurization of industrial quantities of organic process material by electroporation and reactor to carry out the process |
| WO2007068378A1 (en) * | 2005-12-14 | 2007-06-21 | Hochschule Neubrandenburg | Process and device for recovering juice contained in a body, such as fruit juice, vegetable juice or the like |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3477873A (en) * | 1966-10-03 | 1969-11-11 | Beloit Corp | Sugar beet processing |
| DE3150314C2 (en) * | 1981-12-18 | 1986-03-27 | Fried. Krupp Gmbh, 4300 Essen | Process for obtaining a sucrose solution from sugar beet and other plants containing sucrose |
| DE3407364A1 (en) * | 1984-02-29 | 1985-08-29 | Pfeifer & Langen, 5000 Köln | NATURAL WHOLE CANE SUGAR AND METHOD FOR THE PRODUCTION THEREOF |
| AT401776B (en) * | 1989-03-10 | 1996-11-25 | Agrana Zucker Gmbh | MULTI-STAGE METHOD FOR PRODUCING SUGAR FROM SUGAR BEET |
-
1997
- 1997-08-20 DE DE19736080A patent/DE19736080A1/en not_active Withdrawn
-
1998
- 1998-07-14 EP EP98113070A patent/EP0899344B1/en not_active Expired - Lifetime
- 1998-07-14 DE DE59811450T patent/DE59811450D1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0899344A3 (en) | 2002-10-02 |
| DE59811450D1 (en) | 2004-07-01 |
| EP0899344A2 (en) | 1999-03-03 |
| DE19736080A1 (en) | 1999-02-25 |
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