EP3676406A1 - Verfahren zur reduktion des zuckerverlustes bei der abtrennung eines koagulats aus vorkalkungssaft und zur eindickung des koagulats, verwendung einer dekanterzentrifuge, eiweisshaltige fraktion und zuckerrüben-vorkalkungssaft - Google Patents
Verfahren zur reduktion des zuckerverlustes bei der abtrennung eines koagulats aus vorkalkungssaft und zur eindickung des koagulats, verwendung einer dekanterzentrifuge, eiweisshaltige fraktion und zuckerrüben-vorkalkungssaftInfo
- Publication number
- EP3676406A1 EP3676406A1 EP18762817.7A EP18762817A EP3676406A1 EP 3676406 A1 EP3676406 A1 EP 3676406A1 EP 18762817 A EP18762817 A EP 18762817A EP 3676406 A1 EP3676406 A1 EP 3676406A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- juice
- sugar beet
- preliming
- protein
- centrifuge
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C13—SUGAR INDUSTRY
- C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
- C13B20/00—Purification of sugar juices
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- C—CHEMISTRY; METALLURGY
- C13—SUGAR INDUSTRY
- C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
- C13B20/00—Purification of sugar juices
- C13B20/16—Purification of sugar juices by physical means, e.g. osmosis or filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
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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
Definitions
- the present invention relates to the provision of a process for producing an optimal clear sugar beet precalcender juice wherein the clear sugar beet precalcender juice has a significantly reduced solids content and for improved separation of the coagulum separated from the preliming juice.
- sugar is extracted from beets by first cleaning the harvested beets, freeing them from much of the still-adhered soil and leaf debris. After passing through a laundry, the beets are shaved into chips by cutting machines. From the chips, the sugar is obtained by countercurrent extraction using hot, slightly acidified water. The acidification of the extraction liquid favors the filtration of the raw sugar beet juice and the compressibility of the extracted chips. The sugar beet raw juice obtained during the extraction is then fed to an extract cleaning.
- the extract is purified by means of the so-called lime-carbonic acid extract cleaning in the form of a preliming and main liming and a first and second carbonation and the separation of the precipitate after the first and second carbonation.
- extract cleaning is to remove as far as possible the non-sucrose substances contained in sugar beet raw juice, in particular high molecular weight substances.
- the non-sucrose substances to be removed should as far as possible not be degraded, so that no additional low-molecular substances enter the extract or sugar beet raw juice.
- the sugar beet raw juice is gradually alkalized under mild conditions5 by the addition of lime milk.
- the preliming takes place with the addition of defined amounts of calcium hydroxide (lime milk).
- lime milk calcium hydroxide
- phosphate, oxalate, citrate and sulphate0 are deposited as far as possible.
- colloidally dissolved non-coagulants coagulate. Sucrose substances and are precipitated.
- the precipitation of individual contents substances takes place within certain pH ranges. Within these pH ranges, a condensation of the precipitate takes place at the same time.
- the addition of milk of lime during preliming also leads to coagulation of proteins. Because of this protein content, the aforementioned separated non-sucrose substances are also referred to as protein-containing fraction of sugar beet raw juice.
- the task of the subsequent main liming by the addition of lime milk is in particular the chemical degradation of invert sugars and acid amides, which would otherwise occur in the field of juice thickening to form acids.
- the lime milk added in the main liming plays a major role in the first and second carbonation.
- a strong absorbent is provided for a number of soluble non-sucrose sweeteners and also a suitable filter aid.
- the lime milk that is not used in the main liming process is converted to calcium carbonate by introducing carbon dioxide as a carbonation gas in the two carbonation steps. The carbonation takes place in two stages.
- the precipitated and flocculated non-sucrose substances and part of the dyes contained in the sugar beet raw juice are absorptively bound to the formed calcium carbonate.
- the so-called first sludge juice obtained in the first carbonation is filtered or passed through decanters and thereby thickened to sludge juice concentrate.
- the so-called second sludge juice is formed, which is also filtered and thickened.
- the concentrated in the first and second carbonation calcium carbonate sludge (sludge juice concentrate) are usually combined and pressed. This creates the so-called Carbokalk.
- This Carbokalk is a storable product with a dry matter content of more than 70%.
- the sugar beet and preliming juice purified in the extract purification is further treated and white sugar is obtained.
- a considerable disadvantage of conventional lime-carbonic acid extract cleaning is, in particular, that only a relatively small cleaning effect is achieved, since only a maximum of 40% of all non-sucrose substances are removed from sugar beet raw juice.
- Another disadvantage is that the process requires very large quantities of milk of lime.
- the production of the lime milk used in lime-carbonic acid extract purification processes and the elimination of the waste resulting from lime production are relative expensive.
- the carbon dioxide emissions from lime kiln and juice purification plants are very high.
- the lime-carbon dioxide extract cleaning process resulting Carbokalk which consists of lime and separated juice impurities, can only be used as fertilizer.
- EP 1 682 683 A discloses a process for the extract purification of sugar beet raw juice, comprising the following process steps, namely the preliming of the sugar beet raw juice by adding lime milk for the coagulation of non-sucrose substances, ie the protein-containing fraction, adding at least one flocculation aid Separating the coagulum of preliming juice using at least one first separating device to obtain a clear preliming juice, main liming the clear preliming juice obtained after separation of the coagulum by adding lime milk, and carrying out a first and optionally second carbonation.
- a disadvantage of these methods is the comparatively high sugar loss, ie the comparatively high proportion of sugar in separated coagulum and an undesirably high solids content in the resulting clear preliming ssaft, both phenomena ultimately resulting from a still be improved separation of one with a high sugar content as possible clear preliming juice from the coagulum. It was also found to be disadvantageous that the decanter centrifuges used according to Fasol were more stable than other configurations under certain conditions, but that continuous operation was still not possible due to different viscosities of the solids fraction to be separated off.
- the present invention is therefore based on the technical problem of providing a process for the production of a clear sugar beet precalking juice and a protein-containing fraction of sugar beet raw juice and products produced by this process, with which the aforementioned disadvantages are overcome, in particular to provide a process by means of which Reliably and precisely the coagulum is separated from the pre-limed sugar beet raw juice, lower amounts of sugar are lost during the separation and thereby a particularly clear beet-preliming juice is obtained.
- the method according to the invention should be capable of continuous operation.
- the present invention solves the underlying technical problem by providing the teaching, in particular the independent claims.
- the present invention solves the technical problem underlying it by providing a process for producing a clear sugar beet pre-limping juice and a proteinaceous fraction comprising process steps a) providing a sugar beet raw juice, b) preliming the sugar beet raw juice provided in process step a) for obtaining a preliming juice to form a coagulum of non-sucrose substances which forms in the resulting preliming juice, c) setting a solids content of 15-25% by volume (based on the total volume of preliming juice provided in process step b) in the preliming juice, d) Separating the coagulum from the preliming juice obtained in process step c) with a solids content of 15-25% by volume using at least one decanter centrifuge, comprising a motor-driven circulating centrifuge drum with a cylindrical section and a conical section, wherein the angle between the longitudinal axis of the
- the invention therefore advantageously and surprisingly provides a process in which in a first process step a) a sugar beet raw juice, for example by means of extraction, in particular countercurrent extraction from preferably sugar beets, in particular sugar beet chips, is provided and in a further process step b) the preliming of this raw sugar beet juice is carried out, thereby producing a preliming juice in which a coagulum of non-sucrose substances is formed.
- the solids content of the preliming juice is according to the invention in process step c) to 15 to 25% by volume (based on the total volume of the preliming juice used in process step b) set.
- the invention provides in a next process step d) before, the coagulum separating the preliming juice thus obtained with at least one decanter centrifuge from a clear sugar beet-preliming juice thus obtained.
- the inventively used according decanter centrifuge comprises a motor-driven, rotating centrifuge drum with at least one cylindrical portion and a conical portion, wherein the angle between the longitudinal axis of the centrifuge drum and the generatrix of the conical section is 6 ° to 10 °, as well as rotatably mounted in the centrifuge drum extruder screw.
- a clear beet-preliming juice and a coagulum are obtained in the form of a protein-containing fraction.
- At least one decanter centrifuge which comprises at least one motor-driven rotating centrifuge drum having a cylindrical portion and a conical portion, wherein the angle between the longitudinal axis of the centrifuge drum and the surface line of the conical portion is 6 ° to 10 ° and an in the centrifuge drum rotatably mounted extruder screw, for separating a protein-containing fraction from a, a solids content of 15 to 25% by volume (based on the total volume of the process step b) used preliming juice), preliming juice.
- the clear sugar beet-preliming juice thus obtained has a lower solids content compared to a procedure using a sugar beet raw juice of identical composition and volume at a different discharge angle, in particular 5 ° and / or another solids content in the preliming juice, in particular 10 vol. -%.
- the proteinaceous fraction thus obtained has an increased solid content, a smaller amount of sugar per unit time (corresponding to a reduced sugar loss in the clear sugar beet precalcender juice) and an increased amount of solids obtained per unit time compared to a procedure using a sugar beet raw juice more identical Composition and volume at a different discharge angle, in particular of 5 ° and / or another solids content in the preliming juice, in particular 10% by volume.
- the fiction, contemporary procedure leads to a significantly improved compared to the prior art, that is reduced, solids content in the obtained after separation of the coagulum clear sugar Beet Voralkungssaft, that is the clear run, by separating the coagulum at the same time obtained increased amount of solids per Time unit and solids content and lower sugar amount of the protein-containing fraction.
- the special combination of fiction, according to provided Austragswinkels that is the angle between the longitudinal axis of the centrifuge drum and the generatrix of the conical section, with the specific solid used in the invention proportion in the invention seems to be in the for the separation of the coagulum used preliming juice to a significantly reduced sugar loss and a surprisingly low solids content in the clear run.
- a preliming is carried out by adding lime milk to the sugar beet raw juice, in particular to an alkalinity of 0.1 to 0.3 g CaO / 100 ml sugar beet raw juice.
- an increase in the pH to 10 to 12, in particular 10.5 to 12, in particular 10.5 to 11.5, in particular 11 is carried out.
- At least one flocculation aid is added, for example a polyanionic flocculant, for example copolymer, for example a copolymer of acrylamide and Sodium acrylate, in particular having a molecular weight of about 5 million to 22 million, preferably up to a concentration of 1 to 8 ppm.
- a polyanionic flocculant for example copolymer, for example a copolymer of acrylamide and Sodium acrylate, in particular having a molecular weight of about 5 million to 22 million, preferably up to a concentration of 1 to 8 ppm.
- the solids content of in process step d) to be used preliming juice in process step c) by means of at least one separation device, in particular a decanter, for example, a dynamic or static decanter, for example, from a setting device is set.
- the angle between the longitudinal axis of the centrifuge drum and the generatrix of the conical section of the centrifuge drum of the at least one decanter centrifuge in process step d) and / or f here also understood as “discharge angle” or “discharge angle of the drum", 6 to 10 °, preferably 8 to 10 °, preferably 8 °.
- step e) clear sugar beet preliming juice with preliming juice from process step b) is mixed.
- process step c) the solids content is then adjusted and then in step d) the coagulum is separated.
- process step f) in a process step f) in process step e) obtained protein-containing fraction thickened, that is concentrated, in particular after prior dilution of the process step e) protein-containing fraction obtained on a solid proportion of the protein-containing fraction of 15 to 25 vol .-%, in particular 20 vol .-%.
- process step f) is carried out using at least one further decanter centrifuge.
- this further decanter centrifuge comprises a motor-driven circulating centrifuge drum having at least one cylindrical section and at least one conical section, the angle between the longitudinal axis of the centrifuge drum and the surface line of the conical section being preferably 6 to 10 °, preferably 8 to 10 ° 8 ° and at least one rotatably mounted in the centrifuge drum extruder screw is present.
- this at least one decanter centrifuge is operated with at most 50% of the permissible maximum torque.
- the procedure according to the invention provides for the sequence of process steps a) to e), optionally also the process step f), in a particularly preferred embodiment the process according to the invention consists of process steps a) to e), in particular a) to f), that is between method steps a) to e), in particular between method steps a) to f), no further method steps take place.
- a method according to the invention is provided in which the method steps a) to e), in particular a) to f), in exactly the order given a), b), c), d), e) or a) , b), c), d), e), f).
- the process steps are carried out simultaneously, overlapping in time or in succession.
- the process steps b) and c) and the method steps d) and e) can be performed simultaneously with one another or partially overlapping in time.
- the present invention also provides a protein-containing fraction preparable, in particular manufactured, according to one of the methods of the invention.
- the present invention also provides a clear sugar beet preliming juice preparable, in particular prepared, by any of the methods according to the invention.
- the present invention also relates to the use of a decanter centrifuge comprising a motor-driven revolving centrifuge drum having a cylindrical portion and a conical portion, wherein the angle between the longitudinal axis of the centrifuge drum and the surface line of the conical portion is 6 ° to 10 °, and one in the Centrifuge drum rotatable mounted extruder screw to obtain a clear sugar beet preliming juice and a protein-containing fraction.
- sugar beet raw juice is understood as meaning the juice, ie the aqueous sugar-containing medium which can be obtained from sugar beets, for example from beet pulp, by extraction or pressing, in particular by thermal extraction processes such as countercurrent extraction at, for example, 65 to 75 ° C. in the so-called diffusion process, electroporation-assisted extraction processes or pressing processes.
- This sugar-yielding sugar beet raw juice contains, in addition to sugar (sucrose), various other organic and inorganic constituents of the beet, which are referred to as non-sucrose substances.
- a "clear beet and preliming juice” is understood as meaning the juice, ie the aqueous sugar-containing medium which is obtained as clear-water after separation of the protein-containing fraction a low solids content (in% by volume), ie a solids content of less than or equal to 12% by volume
- a solids content in the clear sugar beet preliming juice is from 1 to 12% by volume, in particular 1 - 10% by volume, in particular 1 - 6% by volume, in particular 2 - 12% by volume, in particular 2 - 10% by volume, in particular 2 - 6% by volume, in particular 4 - 12% by volume %, in particular 4 to 10% by volume, in particular 4 to 6% by volume.
- non-sucrose substances contained in the sugar beet raw juice are understood as meaning high-molecular substances such as proteins, polysaccharides and cell wall components as well as low-molecular compounds such as inorganic or organic acids, amino acids and mineral substances pectins, lignin, cellulose and hemicellulose, as well as the proteins, which include proteins, in particular nucleoproteins or glycoproteins, as hydrophilic macromolecules in colloidal disperse form, such as lactates, citrates, Pectic acid or oxalates.
- the inorganic acids are, in particular, sulfates or phosphates.
- preliming is understood to mean the addition of lime milk to sugar beet raw juice, in particular to an alkalinity of about 0.1 to 0.3 g CaO / 100 ml sugar beet raw juice whereby the pH of the raw sugar beet raw juice is raised from about 6 to about 11.5
- the preliming serves to flocculate non-sucrose substances, such as pectin and proteins, and to precipitate sparingly soluble calcium salts.
- lime milk is understood in particular to mean calcium hydroxide which is formed in the highly exothermic reaction of quicklime (calcium oxide) with water and used as liming agent in preliming and main liming Precipitation or coagulation of non-sucrose substances in the form of a coagulum.
- the process step b) by preliming and optionally adding flocculants in the form of a coagulum separated non-sucrose substances of the sugar beet raw juice are referred to as "protein-containing fraction” or "colloid fraction”.
- protein-containing fraction or "colloid fraction”.
- This is alkaline, perishable and thixotropic due to its organic nature. It behaves like a non-Newtonian fluid, in particular, the viscosity is lower under shear stress and after the strain is again the initial viscosity.
- a "coagulum” is understood to mean the agglomerations of the non-sucrose substances present in the sugar beet raw juice, which are formed as a result of a flocculation process sparingly soluble salts formed by reactions of the anions of organic or inorganic acids with calcium, and the high molecular weight sugar beet raw juice ingredients, in particular of hydrophilic character, such as proteins, polysaccharides and cell wall constituents, which are normally colloidally dispersed in the sugar beet raw juice ,
- hydrophilic character such as proteins, polysaccharides and cell wall constituents, which are normally colloidally dispersed in the sugar beet raw juice
- anions such as oxalate, citrate, phosphate, sulfate and pectic acid as well as colloids, especially pectin, proteins, cellulose and hemicellulose are present.
- the flocculation process is subdivided into a flocculation in which aggregation occurs by absorption of bridging polymers and coagulation in which aggregation occurs by degradation or reduction of repulsive forces.
- the rate of flocculation depends on the temperature, the pH and the method of adding the milk of lime.
- the precipitation of individual juice ingredients, such as anions such as oxalate, phosphate, citrate and sulfate, as well as colloids such as pectin and egg white, takes place in certain pH ranges, wherein a compression of the precipitate takes place within these pH ranges.
- the pH at which a maximum amount of colloids is flocculated and the precipitation of insoluble calcium salts is almost complete is referred to as the optimum flocculation point of preliming. If the precipitation takes place at the optimum flocculation point, uniformly stable flocculation of colloidally disperse, high molecular weight juice components occurs.
- the preliming can be carried out as cold or as warm preliming.
- the cold preliming is carried out at a preliming temperature of about 38 to 40 ° C.
- the addition of lime milk for preliming the sugar beet raw juice is carried out according to the invention preferably as a progressive preliming.
- Progressive preliming is understood as meaning a gradual increase in the alkalinity or the pH of the raw sugar beet raw juice, preferably by slow infusion of the milk of lime or by small discontinuous lime milk additions, in which case in particular the pH optimum is passed slowly.
- the progressive alkalization of the sugar beet raw juice during the preliming in countercurrent by an already alkalized Beet raw juice, for example by means of the sludge juice concentrate from the carbonation stages, can take place.
- the countercurrent progressive alkalization means that the higher alkalinity feed is mixed as quickly as possible with a lower alkalinity juice, without the possibility of creating different alkalinity gradients within the mixing zone.
- the protein-containing fraction separated from the preliming juice in process step d) is obtained, preferably after collection.
- the protein-containing fraction obtained in process step e) is thickened in an optional process step f) by using a further decanter centrifuge according to the invention, preferably as in process step d).
- the "thickening" means the thickening of the protein-containing fraction to a preferred solids content of 35 to 50%, preferably 38 to 45%, preferably 45% (solids fractions in the protein-containing fraction are used in the present teaching, unless otherwise stated). based on the weight of the total composition).
- solids content of the preliming juice is understood as meaning the proportion, preferably in% by volume, of the preliming juice which is obtained after centrifugation, in particular at 4000 rpm and 10 minutes, and removal of the supernatant
- solids content of the protein-containing fraction means the proportion, preferably in% by weight, of the protein-containing fraction which is obtained after removal of water, for example by drying.
- the "solids content" of the protein-containing fraction is understood to mean the mass of the protein-containing fraction obtained per time unit, preferably in kilograms per hour, in process step e) measured volume per unit time of the protein-containing fraction calculated.
- solids content in the clear sugar beet pre-calcification juice is understood to mean the proportion of the clear sugar beet pre-liming juice, which is obtained after centrifugation, in particular at 4000 rpm and 10 minutes, and removal of the supernatant.
- the "sugar amount" of the protein-containing fraction means the mass of sugar which is present in the protein-containing fraction after separation of the coagulum from the preliming juice.
- a “decanter” or “decanter”, in particular static or dynamic decanter, is understood to mean a device or an apparatus which serves for the mechanical removal of sedimented substances from a liquid by the sedimentation principle by means of gravity.
- a decanter centrifuge according to the invention comprises a motor-driven, circulating centrifuge drum with at least one cylindrical and at least one conical section and at least one extruder screw rotatably mounted in the centrifuge drum, and at least one inlet, at least one central outlet and at least one solids discharge.
- the torque during operation of the centrifuge in process step d) and / or f) is at most 50%, in particular at most 40% of the maximum permissible torque.
- the torque during operation of the centrifuge of 10 to 50%, preferably 20 to 50%, preferably 30 to 50%, preferably 10 to 40%, preferably 20 to 40%, preferably 30 to 40 % of the maximum allowable torque.
- the "maximum allowable torque” is understood to mean the highest torque at which the centrifuge can be operated without leaving permanent damage.
- permanent damage means damage which significantly impairs normal operation, in particular means that the centrifuge is no longer functional or has been reduced in its efficiency to such an extent that it can be used in conjunction with the present invention produces a product of insufficient quality, in particular a clear sugar beet preliming juice with, for example, a solids content in clear water of more than 15% by volume or a protein-containing fraction with a lower solids content than 35% by weight.
- a flocculant is understood to mean a substance which influences the zeta potential of particles in colloidal suspensions in such a way that they aggregate into flocs and can be removed from the system, for example after sedimentation
- the flocculation aid may also be a sedimentation accelerator.
- flocculation aids or “sedimentation accelerators” are understood as meaning compounds which bring about the aggregation of solid particles into larger units or flocs. Due to the aggregation as flakes, the solids can settle much faster due to their larger mass. At the same time, the pores between the individual particles are increased, so that the water that is in the sedimented sludge can be easily removed by filtration or centrifugation.
- the polyanionic flocculants according to the invention preferably used have no coagulating effect, since they do not affect the dispersion of the particles in the liquid phase, but cause the aggregation of the particles by absorption-bridging polymers.
- copolymers of acrylamide and sodium acrylate used in the preferred embodiment according to the invention as polyanionic flocculants are synthetic organic water-soluble polyelectrolytes with a relatively large molecular weight of about 5 million to about 22 million. These compounds are medium to highly ionic. Particularly preferred flocculants are the products 2440 and 2540 (Stockhausen Co.) and NA 945 (Clarflock). Further advantageous embodiments will be apparent from the dependent claims.
- Raw juice from sugar beet is in a heated container, which has a stirrer, a feed for sugar beet raw juice and a drain, and a pH electrode, and on Heated to 55 ° C. Over a period of 20 minutes, lime milk is gradually added to the raw juice up to the pH of the optimum flocculation point of the preliming (about 0.1-0.3 g CaO / 100 ml juice). To increase the settling rate, a polyanionic flocculant (Praestol 2540TR) is then added.
- the preliming juice is discharged, adjusted to a solids content of 20% by volume with the aid of a static decanter and fed to a decanter centrifuge which has an angle between the longitudinal axis of the centrifuge drum and the surface line of the conical section of 8 ° and with 10-30% of the maximum permissible torque is operated.
- the preliming juice (feed) is fed to the decanter centrifuge at 3000 L / h.
- the proteinaceous fraction is separated from the preliming juice and removed via the solids discharge from the decanter centrifuge, and the clear sugar beet preliming juice is removed from the centrate outlet of the decanter centrifuge.
- the solids content of the protein-containing fraction here is 38 to 42 wt .-% and the amount of solids 192 kg / h of dry matter.
- the amount of sugar in the protein-containing fraction is 15 kg / h and the solids content in the clear sugar beet preliming juice is 4 to 6% by volume.
- Beet raw juice is precalculated as in Example 1 and at 3000 L / h and a solids content of 20% by volume of various decanter centrifuges with respective discharge angles of 5 °, 8 °, 10 ° and 15 ° between the longitudinal axis and the generatrix of the conical section fed to the centrifuge drum.
- the different decanter centrifuges are operated with different torques to allow a separation of the coagulum.
- the protein-containing fractions separated with the respective different decanter centrifuges, as well as clear sugar beet raw juices show differences in the solids content of the clear sugar beet pre-liming juice, as well as in sugar quantity and solids content and proportion of the protein-containing fraction (see Table 1).
- the use of a decanter centrifuge with an angle of 5 ° leads to an increased amount of sugar and a low solids content (DM in wt .-%) and lower solids (in kg / h) in the protein-containing fraction and to an increased solids content (in Vol. %) in the clear beet-preliming juice.
- the use of a decanter centrifuge with an angle of 8 ° results in a particularly clear sugar beet Pre-liming juice and a high solids content, a high solids content and a smaller amount of sugar in the protein-containing fraction.
- the use of a decanter centrifuge with an angle of 10 ° also leads to a comparable amount of sugar and solids and solid content of the protein-containing fraction.
- the decanter centrifuge with an angle of 15 ° does not segregate the protein-containing fraction from the preliming ssaft even if the maximum permissible torque is exceeded for a short time.
- Protein-containing fraction amount of solids kg / h 148 192 164 -
- a preliming juice produced according to Example 1 is adjusted to 10, 20 and 30% by volume solids content with the aid of a static decanter. These differently adjusted preliming juices are each fed to a decanter centrifuge with a discharge angle of 8 °. The use of a preliming juice with different solids content results in different results:
- Protein-containing fraction solids amount kg / h 100 192 192 192 192
- a prepared according to Example 1 preliming juice with a solids content of 15% by volume is a decanter centrifuge with a discharge angle of 10 ° (operated as described in Example 1) supplied.
- the resulting clear beet-preliming juice is collected and treated further.
- the protein-containing fraction with a solids content of 36% by weight is collected, diluted to 20 vol .-% solids and fed to another decanter centrifuge.
- This further decanter centrifuge has a discharge angle of 8 ° and is operated with a torque of at most 50% of the maximum permissible torque.
- the protein-containing fraction is thickened with the aid of the further decanter centrifuge to a solids content of 45% by weight.
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Abstract
Description
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102017215244.3A DE102017215244A1 (de) | 2017-08-31 | 2017-08-31 | Verfahren zur Reduktion des Zuckerverlustes bei der Abtrennung eines Koagulats aus Vorkalkungssaft und zur Eindickung des Koagulats |
PCT/EP2018/073190 WO2019043035A1 (de) | 2017-08-31 | 2018-08-29 | Verfahren zur reduktion des zuckerverlustes bei der abtrennung eines koagulats aus vorkalkungssaft und zur eindickung des koagulats, verwendung einer dekanterzentrifuge, eiweisshaltege fraktion und zuckerrüben-vorkalkungssaft |
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EP3676406A1 true EP3676406A1 (de) | 2020-07-08 |
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EP18762817.7A Pending EP3676406A1 (de) | 2017-08-31 | 2018-08-29 | Verfahren zur reduktion des zuckerverlustes bei der abtrennung eines koagulats aus vorkalkungssaft und zur eindickung des koagulats, verwendung einer dekanterzentrifuge, eiweisshaltige fraktion und zuckerrüben-vorkalkungssaft |
Country Status (8)
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US (1) | US11702710B2 (de) |
EP (1) | EP3676406A1 (de) |
JP (1) | JP7374080B2 (de) |
CA (1) | CA3073867A1 (de) |
DE (1) | DE102017215244A1 (de) |
EA (1) | EA202090621A1 (de) |
MA (1) | MA50060A (de) |
WO (1) | WO2019043035A1 (de) |
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EP4047350A1 (de) | 2021-02-17 | 2022-08-24 | KWS SAAT SE & Co. KGaA | Verfahren zur bestimmung von komponenten bei der industriellen verarbeitung von zuckerrüben in einer produktionsanlage |
WO2022175309A1 (en) | 2021-02-17 | 2022-08-25 | KWS SAAT SE & Co. KGaA | Methods for analyzing plant material, for determining plant material components and for detecting plant diseases in plant material |
EP4159876A1 (de) * | 2021-09-30 | 2023-04-05 | Tereos France | Verfahren zur verminderung von kohlendioxidemissionen bei der zuckerherstellung |
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JP4132223B2 (ja) * | 1998-05-11 | 2008-08-13 | 北海道糖業株式会社 | 甜菜粗汁を清浄する処理方法 |
DE10350672B4 (de) | 2003-10-30 | 2009-10-29 | Südzucker Aktiengesellschaft | Verfahren zur Reduzierung des Kalkverbrauches bei der Zuckerrübensaft-Reinigung |
DE102004060929B4 (de) | 2004-12-17 | 2009-06-10 | Flottweg Gmbh & Co. Kgaa | Verfahren und Anlage zur Herstellung von Glukose aus einer Stärkelösung |
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DE102006004103B4 (de) | 2006-01-28 | 2007-12-20 | Südzucker AG Mannheim/Ochsenfurt | Rohsaftreinigung mit reduziertem Kalkverbrauch |
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US9546351B2 (en) * | 2010-04-12 | 2017-01-17 | Industrias Centli, S.A. De C.V. | Method and system for processing biomass |
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 |
DE102010047996A1 (de) * | 2010-10-08 | 2012-04-12 | GFE Gesellschaft für Fertigungstechnik u. Entwicklung Schmalkalden e.V. | Vorrichtung zum Erfassen, Vermessen und Kontrollieren der Oberfläche von Endlosprodukten |
DE102010047995A1 (de) | 2010-10-08 | 2012-04-12 | Südzucker Aktiengesellschaft Mannheim/Ochsenfurt | Kolloidprodukt, Verfahren zu dessen Herstellung und Verwendung desselben |
DE102011108008A1 (de) * | 2011-07-19 | 2013-01-24 | Harry Gaus | Dekanterzentrifuge |
DK177710B1 (en) * | 2012-09-14 | 2014-03-31 | Alfa Laval Corp Ab | Auger conveyor for a centrifugal separator, in particular a decanter centrifuge, and a centrifugal separator |
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2018
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- 2018-08-29 EP EP18762817.7A patent/EP3676406A1/de active Pending
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- 2018-08-29 EA EA202090621A patent/EA202090621A1/ru unknown
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JP2020531035A (ja) | 2020-11-05 |
EA202090621A1 (ru) | 2020-06-04 |
DE102017215244A1 (de) | 2019-02-28 |
WO2019043035A1 (de) | 2019-03-07 |
US20200208227A1 (en) | 2020-07-02 |
CA3073867A1 (en) | 2019-03-07 |
US11702710B2 (en) | 2023-07-18 |
MA50060A (fr) | 2020-07-08 |
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