EP2825318B1 - Dispositif comportant une centrifugeuse travaillant en discontinu, destiné à séparer un sirop de masses cuites de sucrerie, et procédé pour la commande d'un tel dispositif - Google Patents

Dispositif comportant une centrifugeuse travaillant en discontinu, destiné à séparer un sirop de masses cuites de sucrerie, et procédé pour la commande d'un tel dispositif Download PDF

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Publication number
EP2825318B1
EP2825318B1 EP13709424.9A EP13709424A EP2825318B1 EP 2825318 B1 EP2825318 B1 EP 2825318B1 EP 13709424 A EP13709424 A EP 13709424A EP 2825318 B1 EP2825318 B1 EP 2825318B1
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EP
European Patent Office
Prior art keywords
annular channel
centrifuge
shut
green
run
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.)
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EP13709424.9A
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German (de)
English (en)
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EP2825318A1 (fr
Inventor
Andreas LEHNBERGER
Dirk SPANGENBERG
Igor DJOUKWÉ
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.)
BMA Braunschweigische Maschinenbauanstalt AG
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BMA Braunschweigische Maschinenbauanstalt AG
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Publication of EP2825318A1 publication Critical patent/EP2825318A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B11/00—Feeding, charging, or discharging bowls
    • B04B11/04—Periodical feeding or discharging; Control arrangements therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B13/00—Control arrangements specially designed for centrifuges; Programme control of centrifuges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/02—Casings; Lids
    • 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
    • C—CHEMISTRY; METALLURGY
    • C13—SUGAR INDUSTRY
    • C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
    • C13B30/00—Crystallisation; Crystallising apparatus; Separating crystals from mother liquors ; Evaporating or boiling sugar juice
    • C13B30/04—Separating crystals from mother liquor
    • C13B30/06—Separating crystals from mother liquor by centrifugal force

Definitions

  • the invention relates to a device with a discontinuous batch centrifuge for separating syrup from Zucker cafellmassen, with a centrifuge housing with a wall and a bottom, with a cylindrical centrifuge drum in the centrifuge housing, with drain openings in the centrifuge housing, with a first receptacle for from the Drainage holes draining syrup, in particular for receiving a green drain, with a second receptacle for draining from the drainage syrup, in particular for receiving a white drain, with a control device, and controllable by the control device valve or Absperran angelen on or in the drain holes or in connecting lines from the drainage holes to the receptacles, to the separation of green drain and white drain.
  • the invention also relates to a method for separating syrup from Zucker spallmassen means of a discontinuously operating centrifuge.
  • Devices for the separation of solids and liquids by means of rotating basket-like aggregates are widely known, for example from EP 1 405 674 A2 , It can also be provided to provide sensors for detecting the state of the centrifuged liquids, which also give control signals for downstream additional units.
  • Discontinuous or periodic centrifuges are widely used during sugar production. It is about that process step in which a Zucker Schollmasse is thrown off in a rotating centrifuge drum.
  • the centrifuge drum in this case has a cover screen, through which passes the syrup separated from the filling compound and then passes from the bores of the jacket of the centrifuge drum in a centrifuge housing, in which the centrifuge drum is arranged.
  • the consistency and the composition of the liquid that passes through the cover sieve changes. Initially, it is a so-called green drain, which contains a high proportion of non-sugar substances, that is, comparatively low in sugar.
  • white effusion passes through the cover sieve, which is substantially more sugary than the green effluent from the first process step.
  • the white effusion occurs when the first spraying of the crystal layer lying on the cover wire with water rinses out the residual syrup and dissolved sugar crystals and pressed by the centrifugal force through the permeable jacket of the centrifuge drum.
  • the white effluent and the sugar substance dissolved by wash water mentioned as the third liquid, can often be reintroduced into the centrifuge drum at the same stage, for example at the next or the second batch process instead of the wash water.
  • Object of the present invention is therefore to provide a proposal for a device with a reasonable quality of the separation with reduced equipment costs is possible.
  • a generic device in that at least one sensor is provided in the transport path of the syrup between the impact of the syrup on the wall of the centrifuge housing and the controllable valve or Absperran glovesen that the sensor is a measuring device for measuring a physical value, which is representative of the distinction between green flow and white flow, that the control device is designed so that it depends on the transmitted from the sensor measured values of the physical value, the valve or Absperran onionen controls that a circumferential annular channel is provided in the centrifuge housing below the centrifuge drum and above or on the bottom, that a first drain opening is provided in the bottom, to which a first connection line is connected to a first receptacle that a second drain opening is provided in the annular channel to which a second connecting line is connected to a second receptacle, and in that a shut-off arrangement is arranged in the second connecting line, which is set so that it opens depending on the time at which the from the centrifuge drum on the inside of the wall of the centr
  • the switch back to the green drain container was then also made at a clearly defined time, namely at the beginning of the treatment of a new centrifuge batch, such as when filling with a new batch of magma.
  • the switching timing is still the one that switches from the discharge of the drain into the green drain receiving tank into a drain of the drain into a white waste holding tank.
  • the parameter used is now a physical value that allows a precise and objective determination of whether the syrup is now white or green.
  • a representative physical value can be used for example, the color of the process or the conductivity of the process.
  • the first derivation of these values according to time can also be an interesting criterion, ie the speed with which the color or brightness or the conductivity of the syrup changes.
  • the values are different for each batch.
  • the quality of the sugar or the amount of sugar and the amount of washing water dispensed and the type of washing water, which in turn can consist of already processed stages of the syrup which in turn can consist of already processed stages of the syrup, other values for brightness, color and electrical conductivity are achieved.
  • this threshold can be around 60% to 85%, in particular around 80%.
  • Such a threshold is low enough, compared to the maximum value of 100%, to be able to completely rule out false tripping in the case of the usual fluctuations in the measured values, and is high enough to trigger in any case and to absolutely define the difference between green drain and white drain to be able to.
  • the color values can be expressed, for example, with so-called ICUMSA units (International Commission for Uniform Methods of Sugar Analysis).
  • ICUMSA units International Commission for Uniform Methods of Sugar Analysis.
  • the color in the effluent of raw sugar magma, ie green effluent is typically less than 25,000 ICUMSA units, also referred to as IU.
  • the white sugar 2-magma process, ie the white effluent is below 10,000 ICUMSA units and the color of the so-called white sugar-1-magma or refined-academa is less than 4000 ICUMSA units.
  • the starting improvement in quality (white waste being regarded as a better quality than green waste) is used as a criterion for switching the derivative of the currently pending process, whereby in comparison the worst quality (ie the green effluent with the highest color value) of the process is used, which usually pending shortly after the start of the Zentrifugenzyklusses.
  • the determination of the physical value of the syrup may be provided at different locations. It is then to be considered for the switchover that between the place where the physical value is determined by, for example, there is placed a sensor, and the place where the switching takes place, so about the place of shut-off or valve assembly, may be a distance that must first be covered by the syrup before he passes this switching device. Of course, this is not a uniform, but a very complex route, but always the same, so that fixed values can be taken here.
  • the syrup draining down the inside of the wall and going down would then pass the sensor.
  • the physical values, such as the color could be determined, so that a corresponding signal can then be used to determine the control for the further procedure.
  • a method is used, which is characterized in that during the centrifuging process, the green drain is first collected in the annular channel that after filling the ring channel is allowed with the green drain that overflowing green drain runs over the top of the Ringkanalwandung and on the floor enters the centrifuge housing that when changing from green drain to white drain from the centrifuge drum opens the shut-off in the second connection line and the contents of the annular channel flows into the second receptacle so that the annular channel is emptied that the White drain collected in the annular channel and is also performed in the second receptacle, and that the green drain located on the floor is guided into the first receptacle.
  • This embodiment of the invention consciously accepts contamination of the resulting white effluent by a predetermined and well-defined amount of green effluent. This is contrary to the expert, so from the outset so a deliberate deterioration of the trappable products causes.
  • the first occurring green drain is collected first.
  • This green drain fills the annular channel until it has reached its maximum volume, and then overflows the upper edge of its wall.
  • the volume fraction of the green drain exceeding the upper edge then drips or then flows to the bottom of the cylinder housing.
  • at least the shut-off arrangement remains closed, which could allow the drainage of the syrup from the annular channel.
  • the green drain from the bottom of the centrifuge housing can already be removed into a receptacle at this time, but this can also happen at a later date.
  • shut-off arrangement opens and clears the way from the ring channel to a second receptacle. This means that the greenery that has been going on since Beginning of the centrifugation has already collected in the annular channel, now goes into this second receptacle through the open shut-off and the associated connection line.
  • first receptacle collects only green drain.
  • these collected masses can be further processed or reintroduced into the process at a desired location.
  • a very great advantage of this embodiment is that maintenance and cleaning work practically only have to take place outside the centrifuge housing. Movable parts such as the Absperran glovesen can optionally be exchanged for replacement aggregates outside the centrifuge housing at short notice and then cleaned without time pressure or repaired if necessary.
  • the quality of the trappable process is better than the conventionally possible qualities in separation processes outside of centrifuge housings and almost as good as in the proven devices such as after DE 197 31 097 C1 ,
  • one or more further annular channels are provided with associated drainage openings, connecting lines and receiving containers and Absperran extracten which are arranged above or below the first annular channel on the inner wall of the centrifuge housing.
  • the additional connecting line with the additional obturator separately and selectively eject the located in the annular channel, the first collected green drain and supply the rest of the green drain, which is collected as in the first embodiment in the first receptacle.
  • FIG. 1 schematically a vertical section through a device with a centrifuge housing 10 can be seen.
  • the centrifuge housing 10 has a usually cylindrical wall 11 and a bottom 12.
  • FIG. 1 From this one only sees a section of an edge region with the transition from the wall 11 to the bottom 12.
  • the centrifuge housing 10 also accommodates a rotating cylindrical centrifuge drum 20. Also of the centrifuge drum 20 is only schematically indicated a corner region. Inside the centrifuge drum 20 Zuckeryogllmasse is thrown off during operation, with syrup in the form of green drain and white drain passes through the jacket to the outside, on the inside of the wall 11 of the centrifuge housing 10th
  • the green effluent that first emerges from the centrifuge drum 20 consequently also first strikes the inner wall 11, runs down the wall 11 and then runs into a channel in the form of an annular channel 30.
  • This annular channel 30 is fixed peripherally on the inside of the wall 11. It has a Ringkanalwandung 31 and a ring channel bottom 32.
  • the annular channel wall 31 is approximately parallel to the wall 11 of the centrifuge housing 10 and runs over the entire circumference by 360 ° with the wall 11 to.
  • the annular channel bottom 32 is horizontal in the first approximation, but has a slope, so that the annular channel 30 has a lowest point.
  • the inclination of the bottom 32 of the annular channel 30 is in most embodiments of the invention in the range of 2 ° to 30 °, preferably between 5 ° and 10 °.
  • the green drain running in the annular channel 30 thus fills this annular channel 30 up to the upper edge of the annular channel wall 31.
  • the green drain runs over the upper edge of the annular channel wall 31 and the overflowing part flows, then drops or drops onto the bottom 12 of the centrifuge housing 10.
  • the capacity of the annular channel 30 is deliberately chosen so that the major part of the green drain runs in this way over the upper edge of the annular channel wall 31 and drips onto the bottom 12 of the centrifuge housing 10.
  • a drain opening 41 is provided on or in the bottom 12 of the centrifuge housing 10. At this drain opening 41, which can be closed, a connecting line 51 is connected.
  • connection line 51 leads to a receptacle 61.
  • the green drain which has collected on the bottom 12 of the centrifuge housing 10, passes through the drain opening 41 and the connecting line 51 in the receptacle 61, which fills in this way with green drain and no other Contains substance.
  • the bottom 12 of the centrifuge housing 10 may also be provided with a slope or be equipped with an inclination corresponding internals, which bundle the green drain at one point of the centrifuge housing 10.
  • Another drain opening 42 is provided in the wall 11, in the area in which the annular channel 30 is located on the inside of the wall 11.
  • This drain opening 42 is connected by means of a connecting line 52 with a second receptacle 62.
  • FIG. 1 A corresponding closing device or shut-off arrangement 71 in the form of a valve is shown schematically in FIG. 1 located.
  • the blocking arrangement 71 prevents the drainage of the green drain located in the annular channel 30 at this time through the drainage opening 42 and the connecting line 52 into the receiving container 62, the receiving container 62 initially remains empty.
  • a sensor 80 is integrated, which detects a physical value of the syrup flowing past here. This may in particular be the color of the syrup. For this there are characteristic color values, so a typical value for the color of a green drain is approximately 20,000 to 25,000 Icumsa units, abbreviated also IU (Icumsa units).
  • the physical value detected by the sensor 80 ie the color
  • the maximum value will, as tests have shown, be reached approximately when the phase of washing liquid addition to the sugar filling masses has been completed, and also at the moment when the continuously accelerating centrifuge drum has reached its maximum value after the acceleration process.
  • the maximum value then remains constant for a period of time, from which it can be deduced that the green effluent remains unchanged during centrifugation and passes through the sensor 80.
  • the total value falls within a range of 10,000 Icumsa units or even lower.
  • a threshold can be selected that is between about 60 and 85% of the previously reached maximum value of the color. If the magnitude of the physical value measured by the sensor 80, in this case the color, falls below the threshold value, then it is immediately clear that this is not one of the usual fluctuations that have often occurred before, but actually the expected turnover of Green drain to white drain that is just starting.
  • the values of the sensor 80 are now transmitted wirelessly or by cable to a controller 81, which in the FIG. 1 also indicated only schematically. If the control device 81 receives this information and recognizes the change from green drain to white drain, the shut-off arrangement 71 is opened.
  • the green drain located in the annular channel 30, that is not on the upper edge of the annular channel wall 31 on the bottom 12 is now running over the connecting line 52 into the receptacle 62, which thereby also fills with a limited amount of green drain, namely with a volume which is exactly the content of the annular channel 30 between the upper edge of the Ringkanalwandung 31, the annular channel bottom 32 and the wall 11 corresponds.
  • the entire white effluent and the washing water with the dissolved sugar crystals is then supplied in the following time to the receptacle 62 in this way.
  • the receptacle 62 thus contains a relatively well-defined mixture of green drain and white drain, which can be predetermined by the choice of the dimensions of the annular channel 30 and the choice of the height of the upper edge of the annular channel wall 31.
  • mixing ratios defined here of approximately 10 to 20 parts of green effluent to approximately 90 to approximately 80 parts of white effluent can be achieved with precise precision. These ratios are significantly better and more precise than the blends that were conventionally possible with external, controlled valve circuits in separating a uniform drain from centrifuge housings.
  • FIG. 2 is a modified embodiment to see that largely takes over the thoughts of the first embodiment and is also shown similarly.
  • centrifuge housing 10 in vertical section with a wall 11 and a bottom 12.
  • a centrifuge drum 20 Within the centrifuge housing 10 is a centrifuge drum 20, from the green drain and later white drain on the inside of the wall 11 of the centrifuge housing 10 passes.
  • annular channel 30 with a Ringkanalwandung 31 and a circular channel bottom 32 can be seen.
  • the annular channel 30 also forms here a circumferential collecting channel for the first out of the centrifuge drum 20 outgoing green drain.
  • a connecting line 53 is provided, which branches off between the drain opening 42 and the shut-off 71 from the connecting line 52 and, so to speak, opens as a short-circuit line in the other connecting line 51.
  • This connection line 53 can be closed or shut off separately with an additional shut-off arrangement 72.
  • the shut-off arrangement 72 is opened or left in the connecting line 53 via the control device 81.
  • the shut-off 71 remains closed. It may then possibly abruptly the contents of the annular channel 30 are performed with the first captured there green drain through the connecting line 53 to the connecting line 51 and into the receptacle 61. Subsequently, with the ICUMSA value still falling further or, alternatively, in this case also correspondingly very short time clock after the preceding event, the shut-off arrangement 71 is now opened.
  • the white drain which has now run into the annular channel 30 from above following the green drain, can now pass through the connecting line 52 and the opened shut-off arrangement 71 into the receiving container 62.
  • the receptacle 62 now takes virtually only white drain.
  • shut-off arrangement 72 can remain open by the control device 81 until the sensor 80 transmits values, after which the green drain is replaced by white effluent.
  • FIG. 3 shows the time course of various values during the processing of a batch in the centrifuge drum 20. To the right, the time t is plotted in seconds. The value 0 denotes the moment of commencement of the filling of the centrifuge drum 20 with sugar filling compound of a new batch.
  • washing water can also be a sugar solution from another processing stage.
  • a third and particularly interesting curve now relates to the variation of the value of the color detected by the sensor 80.
  • a relative value is plotted here for the purpose of illustration.
  • the color value initially increases steeply and then slowly until it reaches the maximum value of 100% of the achieved color value. He stays there for some time and then drops off very steeply. The drop then flows again on a plateau, the amount of which depends on the type of Zucker Schollmasse, the processing stage, the amount of Zucker spallmasse and other criteria.
  • the value is somewhere between a few% and about 60% of the maximum value.
  • FIG. 3 it can be seen that on the left side in the course of apparent green drain 25 and right in the area of the plateau white drain 26 is located.
  • FIG. 4 is shown a somewhat more detailed embodiment, which largely reflects the idea of the second embodiment FIG. 2 equivalent.
  • FIG. 4 is here indicated that initially indicated by the arrow amount of green drain 25 runs down the wall. It then fills down the drainage channel or the annular channel 30 until it has filled it up to the upper edge of the annular channel wall 31.
  • annular channel 30 rotates and its wall 31 may be formed by a cylindrical drum, which can stand as an installation in the interior of the cylinder housing 10 on a corresponding pedestal.
  • the white drain can run via the shut-off arrangement 71 and the connecting device 52 into the receiving container 62 via the drain opening 42 in the region of the annular channel 30, wherein the initially collected green drain before the white drain also passes through a short-circuit connecting line 53 with a shut-off arrangement 72 can be discharged into the connecting line 51 and further into the receptacle 61.
  • FIG. 5 is yet another schematic representation given, from which it can be seen that the annular channel 30 has an inclined annular channel bottom 32 in order to be able to supply the located in the annular channel 30 amount of the respective contents targeted the drain opening 42 can.
  • annular channel bottom 32 is not only inclined in itself, but that it is also in the FIG. 5 Left sides of the wall 11 of the centrifuge housing 10 is higher than on the in the FIG. 5 This shows that the annular channel bottom 31 also has, in circumferential orientation within the wall 11, at least one lower region and correspondingly inclined sections which lead the white drain and the green drain to predetermined drainage openings 42.
  • the gutter or the annular channel 30 is deliberately shown double-walled.
  • This double-walled representation at the same time a possibility is indicated to equip the annular channel 30 with the annular channel bottom 32 and the Ringkanalwandung 31 with heating elements and thus to enable heating of the annular channel 30 and the substance therein.
  • the relatively viscous green effluent can be specifically heated shortly before the change to the white effluent.
  • the viscosity of the green effluent in this phase is significantly reduced. This green drain would therefore proceed much faster from the annular channel 30. This would mean that the separation of green and white effluent is additionally improved.
  • FIG. 6 a further modified embodiment is shown, which is more expensive in terms of apparatus, but can still further perfect the already excellent results for the separation.
  • This embodiment has, in addition to the annular channel 30 with its annular channel wall 31, a second annular channel 35 located underneath, with an annular channel wall 36.
  • This second or lower annular channel 35 receives a lot of green drain or white drain, which runs over the upper edge of the Ringkanalwandung 31 and in turn can run on its own Ringkanalwandung 36 those volume fractions that exceed its capacity.
  • a third shut-off arrangement 73 is provided here.
  • a sensor 80 in the wall 11 above the drain opening 42 or in the connecting line 52/53 are arranged immediately following the drain opening 42.
  • a control device 81 takes over the control of the shut-off arrangements 71, 72 and 73 as a function of the measured values of the sensor 80.
  • FIG. 7 In an embodiment, which is not part of the invention, the lower portion of a centrifuge drum 20 can be seen.
  • a centrifuge housing 10 surrounds the centrifuge drum 20.
  • a wall 11 of the centrifuge housing 10 is provided, onto which the syrup masses thrown off the centrifuge drum 20 impinge. These run down the wall 11. This is first about green drain 25. When running down the wall 11, the green drain 25 passes through the sensor 80.
  • the sensor 80 measures a physical value which, for example, characterizes the color or brightness or electrical conductivity of the passing syrup. It transmits these measured values to a control device 81 (not shown).
  • this shut-off arrangement 71 is a liftable and lowerable cover element that extends in the FIG. 7 just in the closed position. This means that this cover element of the shut-off arrangement 71 rests with a flat conical sealing surface on a stationary counter-cone.
  • This receptacle 61 forms here an annular chamber which is arranged below the centrifuge drum 20 annularly around the centrifuge housing 10.
  • the control device 81 which is not shown, controls the raising and lowering of the shut-off arrangement 71 as a function of the measured values of the sensor 80. If the white drain 26 now passes the sensor 80 instead of the green drain 25, then the cover-like shut-off arrangement 71 is raised. As a result, the shallow cone on the underside of the cover-like element separate from its counter-cone and releases access into the second receptacle 62.
  • This is here also an annular chamber which extends around the outside around the first annular chamber of the first receptacle 61 around the centrifuge housing 10 outside.
  • annular chambers shown in section represent only a part of the receptacles 61, 62.
  • the illustrated annular chambers are used primarily for initially separate recording and then forwarding of the green drain 25 and the white drain 26 receptacle 61, 62 or larger volume areas of these receptacles 61, 62nd can be arranged below the illustrated area and / or outside of the centrifuge housing 10.
  • the term "receptacle 61, 62" therefore, is to be understood as meaning all of these container elements provided for receiving the syrup draining from the centrifuge drum 20 separately according to the green drain 25 and the white drain 26.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Centrifugal Separators (AREA)

Claims (12)

  1. Dispositif comportant une centrifugeuse fonctionnant par lots de façon discontinue pour séparer un sirop de masses cuites de sucre,
    avec un carter de centrifugeuse (10) présentant une paroi (11) et un fond (12), avec un tambour de centrifugeuse cylindrique (20) dans le carter de centrifugeuse (10),
    avec des ouvertures d'écoulement (41, 42) dans le carter de centrifugeuse (10), avec un premier récipient collecteur (61) pour le sirop s'écoulant des ouvertures d'écoulement (41, 42), en particulier pour collecter un sirop vert (25),
    avec un deuxième récipient collecteur (62) pour le sirop s'écoulant des ouvertures d'écoulement (41, 42), en particulier pour collecter un sirop blanc (26),
    avec un dispositif de commande (81), et
    avec des dispositifs de soupape ou d'arrêt (71, 72) pouvant être commandés par le dispositif de commande (81) sur ou dans les ouvertures d'écoulement (41, 42) ou dans les conduites de raccordement (51, 52) allant des ouvertures d'écoulement (41, 42) aux récipients collecteurs (61, 62),
    pour la séparation du sirop vert (25) et du sirop blanc (26),
    caractérisé en ce
    qu'au moins un capteur (80) est prévu dans le trajet de transport du sirop entre l'impact du sirop sur la paroi (11) du carter de centrifugeuse (10) et les dispositifs de soupape ou d'arrêt commandables (71, 72),
    que le capteur (80) présente un dispositif de mesure pour mesurer une valeur physique représentative de la distinction entre sirop vert (25) et sirop blanc (26), que le dispositif de commande (81) est conçu de telle sorte qu'il commande les dispositifs de soupape ou d'arrêt commandables (71, 72) en fonction des valeurs de mesure de la valeur physique transmise par le capteur (80),
    qu'un canal annulaire périphérique (30) est prévu dans le carter de centrifugeuse (10) en dessous du tambour de centrifugeuse (20) et au-dessus ou sur le fond (12), qu'une première ouverture d'écoulement (41) est prévue dans le fond (12), à laquelle est raccordée une première conduite de raccordement (51) allant à un premier récipient collecteur (61),
    qu'une deuxième ouverture d'écoulement (42) est prévue dans le canal annulaire (30), à laquelle est raccordée une deuxième conduite de raccordement (52) allant à un deuxième récipient collecteur (62), et
    qu'un dispositif d'arrêt (71) est disposé dans la deuxième conduite de raccordement (52), lequel est réglé de telle sorte qu'il s'ouvre en fonction du moment où le sirop arrivant du tambour de centrifugeuse (20) sur le côté intérieur de la paroi (11) du carter de centrifugeuse (10) passe de sirop vert à sirop blanc.
  2. Dispositif selon la revendication 1,
    caractérisé en ce
    que le dispositif de mesure est conçu pour mesurer une valeur physique et mesure en tant que valeur physique la luminosité, la couleur, le changement de luminosité avec le temps, le changement de couleur avec le temps, la conductivité et/ou le changement de conductivité avec le temps.
  3. Dispositif selon la revendication 1 ou 2,
    caractérisé en ce
    que le dispositif de commande (81) est conçu pour commuter le dispositif de soupape ou d'arrêt commandable (71, 72) de telle sorte que celui-ci est commuté lorsque la valeur de mesure de la valeur physique transmise par le capteur (80) tombe en dessous d'un seuil qui se situe entre 60 et 85 % de la valeur de mesure maximale de la valeur physique mesurée précédemment dans le même lot.
  4. Dispositif comportant une centrifugeuse fonctionnant de façon discontinue selon l'une des revendications précédentes,
    caractérisé en ce
    que le canal annulaire (30) présente un fond de canal annulaire (32) ayant une inclinaison de plus de 2° et moins de 30°, de préférence de plus de 5° et moins de 10°.
  5. Dispositif comportant une centrifugeuse fonctionnant de façon discontinue selon l'une des revendications précédentes,
    caractérisé en ce
    que le canal annulaire (30) présente une paroi de canal annulaire (31) avec un bord supérieur qui est dimensionné de telle sorte que le volume maximal pouvant être reçu par le canal annulaire (30) est inférieur à 50 % et en particulier inférieur à 15 % du volume d'écoulement total de sirop produit lors d'un cycle du tambour de centrifugeuse (20) fonctionnant de façon discontinue.
  6. Dispositif comportant une centrifugeuse fonctionnant de façon discontinue selon l'une des revendications précédentes,
    caractérisé en ce
    que le canal annulaire (30) est équipé d'éléments chauffants qui sont de préférence disposés dans une paroi de canal annulaire à double paroi (31) et/ou dans un fond de canal annulaire à double paroi (32).
  7. Dispositif comportant une centrifugeuse fonctionnant de façon discontinue selon l'une des revendications précédentes,
    caractérisé en ce
    que plusieurs ouvertures d'écoulement (41) sont prévues dans le fond (12) et plusieurs ouvertures d'écoulement (42) sont prévues dans le canal annulaire (30), les ouvertures d'écoulement (41) dans le fond (12) étant équipées de conduites de raccordement de telle sorte que les ouvertures d'écoulement mènent ensemble à une conduite collectrice, et
    les ouvertures d'écoulement (42) du canal annulaire (30) étant équipées de conduites de raccordement de telle sorte que les ouvertures d'écoulement mènent ensemble à une conduite collectrice.
  8. Dispositif comportant une centrifugeuse fonctionnant de façon discontinue selon la revendication 7,
    caractérisé en ce
    que les ouvertures d'écoulement (41) dans le fond (12) et/ou l'ouverture d'écoulement (42) dans le canal annulaire (30) sont respectivement espacées uniformément les unes des autres sur la périphérie du carter de centrifugeuse (10), et
    que les inclinaisons du fond (12) et/ou du fond de canal annulaire (32) sont choisies de telle sorte que les ouvertures d'écoulement (41, 42) se trouvent respectivement aux points les plus bas du fond (12) et du canal annulaire (30).
  9. Dispositif comportant une centrifugeuse fonctionnant de façon discontinue selon l'une des revendications précédentes,
    caractérisé en ce
    qu'une troisième conduite de raccordement (53) comportant un deuxième dispositif d'arrêt (72) bifurque de la deuxième conduite de raccordement (52) allant de l'ouverture d'écoulement (42) sur le canal annulaire (30) au deuxième récipient collecteur (62) et mène à la première conduite de raccordement (51) au-dessus du premier récipient collecteur (61), le deuxième dispositif d'arrêt (72) étant réglé de telle sorte qu'il s'ouvre et se ferme un laps de temps prédéterminé avant le premier dispositif d'arrêt (71), avant que le premier dispositif d'arrêt (71) ne s'ouvre.
  10. Dispositif comportant une centrifugeuse fonctionnant de façon discontinue selon l'une des revendications précédentes,
    caractérisé en ce
    qu'il est prévu un ou plusieurs autres canaux annulaires (35) avec des ouvertures d'écoulement (43), des conduites de raccordement (53) et des récipients collecteurs (63) ainsi que des dispositifs d'arrêt (73) associés qui sont disposés au-dessus ou en dessous du premier canal annulaire (30) sur la paroi intérieure du carter de centrifugeuse (10).
  11. Procédé de fonctionnement d'un dispositif selon l'une des revendications précédentes,
    caractérisé en ce
    qu'une valeur physique est mesurée dans le trajet de transport du sirop entre l'impact du sirop sur la paroi (11) du carter de centrifugeuse (10) et les dispositifs de soupape et d'arrêt commandables (71, 72), laquelle est représentative de la distinction entre sirop vert (25) et sirop blanc (26),
    que, en fonction des valeurs de mesure de la valeur physique, le dispositif de soupape ou d'arrêt (71, 72) est commandé de telle sorte que les composantes de sirop détectés comme sirop vert (25) ou sirop blanc (26) s'écoulent vers les récipients collecteurs (61, 62) destinés à les recevoir,
    que, pendant le processus de centrifugation, le sirop vert (25) est d'abord recueilli dans le canal annulaire (30),
    qu'après le remplissage du canal annulaire (30) avec le sirop vert (25), il est permis au sirop vert excédentaire (25) de passer par-dessus le bord supérieur de la paroi de canal annulaire (31) et de parvenir sur le fond (12) du carter de centrifugeuse (10),
    que lors du passage de sirop vert (25) à sirop blanc (26) en sortie du tambour de centrifugeuse (20), le dispositif d'arrêt (71) dans la deuxième conduite de raccordement (52) s'ouvre et le contenu du canal annulaire (30) s'écoule dans le deuxième récipient collecteur (62), de sorte que le canal annulaire (30) est vidé, que le sirop blanc (26) est collecté dans le canal annulaire (30) et également conduit dans le deuxième récipient collecteur (62), et
    que le sirop vert (25) se trouvant sur le fond (12) est conduit dans le premier récipient collecteur (61).
  12. Procédé selon la revendication 11,
    caractérisé en ce
    que lors du passage de sirop vert (25) à sirop blanc (26) en sortie du tambour de centrifugeuse (20), le deuxième dispositif de blocage (72) dans la troisième conduite de raccordement (53) s'ouvre d'abord et le contenu du canal annulaire (30) s'écoule à travers la troisième conduite de raccordement (53) dans la première conduite de raccordement (51) et de là dans le premier récipient collecteur (61),
    que le deuxième dispositif d'arrêt (72) dans la troisième conduite de raccordement (53) est fermé,
    que le dispositif d'arrêt (71) dans la deuxième conduite de raccordement (52) s'ouvre ensuite et le sirop blanc (26) dans le canal annulaire (30) est conduit dans le deuxième récipient collecteur (62), et
    que le sirop vert (25) se trouvant sur le fond (12) est conduit dans le premier récipient collecteur (61).
EP13709424.9A 2012-03-14 2013-03-13 Dispositif comportant une centrifugeuse travaillant en discontinu, destiné à séparer un sirop de masses cuites de sucrerie, et procédé pour la commande d'un tel dispositif Active EP2825318B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012004968A DE102012004968A1 (de) 2012-03-14 2012-03-14 Vorrichtung mit einer diskontinuierlich arbeitenden Zentrifuge zum Abtrennen von Sirup aus Zuckerfüllmassen
PCT/EP2013/055157 WO2013135774A1 (fr) 2012-03-14 2013-03-13 Dispositif comportant une centrifugeuse travaillant en discontinu, destiné à séparer un sirop de masses cuites de sucrerie, et procédé pour la commande d'un tel dispositif

Publications (2)

Publication Number Publication Date
EP2825318A1 EP2825318A1 (fr) 2015-01-21
EP2825318B1 true EP2825318B1 (fr) 2018-11-07

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US (1) US10549288B2 (fr)
EP (1) EP2825318B1 (fr)
CN (1) CN103717311B (fr)
BR (1) BR112014002230B1 (fr)
DE (1) DE102012004968A1 (fr)
MX (1) MX351296B (fr)
RU (1) RU2586153C2 (fr)
WO (1) WO2013135774A1 (fr)

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DE102011119265B4 (de) * 2011-11-24 2018-01-04 Bma Braunschweigische Maschinenbauanstalt Ag Diskontinuierliche Zentrifuge mit Ausräumer zum Ausräumen eines Produktes
MX2019000952A (es) * 2016-07-27 2019-09-16 Nutrition Science Design Pte Ltd Proceso para la produccion de azucar.
US10513746B2 (en) 2016-10-18 2019-12-24 Western States Machine Company Continuous centrifuge systems with multiple-stage mixing
DE102019106842A1 (de) * 2019-03-18 2020-09-24 Bma Braunschweigische Maschinenbauanstalt Ag Verfahren zum Regeln des Betriebes einer kontinuierlich oder periodisch arbeitenden Zentrifuge und Einrichtung zur Durchführung des Verfahrens

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DE1278952B (de) * 1964-04-07 1968-09-26 Hein Lehmann Ag Zentrifuge zum kontinuierlichen Trennen von Feststoff-Fluessigkeitsgemischen, insbesondere Zuckerzentrifuge
SU1350173A1 (ru) * 1985-10-24 1987-11-07 Э.Г.Ладыженский, А.Б.Рутман и М.Г.Ладыженский Система автоматического регулировани начала и длительности пробелки сахара водой в центрифуге
FR2665379B1 (fr) * 1990-07-31 1993-08-13 Fives Cail Babcock Procede de conduite automatisee d'une essoreuse centrifuge a marche discontinue.
DE4414602A1 (de) 1994-04-27 1995-11-02 Pfeifer & Langen Verfahren zur Steuerung des Nutzungsgrades einer diskontinuierlich arbeitenden Zentrifuge, insbesondere einer Zuckerzentrifuge
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RU2586153C2 (ru) 2016-06-10
US10549288B2 (en) 2020-02-04
MX351296B (es) 2017-10-10
CN103717311B (zh) 2016-10-19
WO2013135774A1 (fr) 2013-09-19
US20150290662A1 (en) 2015-10-15
EP2825318A1 (fr) 2015-01-21
RU2014119992A (ru) 2016-05-10
DE102012004968A1 (de) 2013-09-19
MX2014010916A (es) 2014-11-13
BR112014002230B1 (pt) 2020-07-07
CN103717311A (zh) 2014-04-09
BR112014002230A2 (pt) 2017-02-21

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