EP0679722A2 - Procédé de contrôle de l'efficacité d'une centrifugeuse travaillant en discontinu, en particulier une centrifugeuse pour sucre - Google Patents

Procédé de contrôle de l'efficacité d'une centrifugeuse travaillant en discontinu, en particulier une centrifugeuse pour sucre Download PDF

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Publication number
EP0679722A2
EP0679722A2 EP95106267A EP95106267A EP0679722A2 EP 0679722 A2 EP0679722 A2 EP 0679722A2 EP 95106267 A EP95106267 A EP 95106267A EP 95106267 A EP95106267 A EP 95106267A EP 0679722 A2 EP0679722 A2 EP 0679722A2
Authority
EP
European Patent Office
Prior art keywords
centrifuge
layer
layer thickness
drum
washing liquid
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.)
Granted
Application number
EP95106267A
Other languages
German (de)
English (en)
Other versions
EP0679722A3 (fr
EP0679722B1 (fr
Inventor
Helmut Dr. Eichhorn
Horst Herold
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.)
Pfeifer and Langen GmbH and Co KG
Original Assignee
Pfeifer and Langen GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pfeifer and Langen GmbH and Co KG filed Critical Pfeifer and Langen GmbH and Co KG
Publication of EP0679722A2 publication Critical patent/EP0679722A2/fr
Publication of EP0679722A3 publication Critical patent/EP0679722A3/fr
Application granted granted Critical
Publication of EP0679722B1 publication Critical patent/EP0679722B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C13SUGAR INDUSTRY
    • C13BPRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
    • C13B30/00Crystallisation; Crystallising apparatus; Separating crystals from mother liquors ; Evaporating or boiling sugar juice
    • C13B30/04Separating crystals from mother liquor
    • C13B30/06Separating crystals from mother liquor by centrifugal force
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04BCENTRIFUGES
    • B04B11/00Feeding, charging, or discharging bowls
    • B04B11/04Periodical feeding or discharging; Control arrangements therefor
    • B04B11/043Load indication with or without control arrangements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04BCENTRIFUGES
    • B04B15/00Other accessories for centrifuges
    • B04B15/12Other accessories for centrifuges for drying or washing the separated solid particles

Definitions

  • the invention relates to a method for controlling the degree of utilization of a discontinuously operating centrifuge for treating a filling compound in the form of a solid-liquid mixture, in particular a sugar centrifuge, the filling compound and a washing liquid being introduced into the centrifuge drum in a quantity-controllable manner via a nozzle assembly.
  • Filling quantities of discontinuous centrifuge drums can be adjusted by touch contacts, e.g. B. feeler wheel, button, dynamic pressure meter, by measuring the energy consumption during filling, by capacitive measurements. Overfilling of the drum can thus be avoided and, in the case of sugar centrifuges, a predetermined crystalline layer thickness can be set which corresponds to the composition of the magma during the setting process.
  • touch contacts e.g. B. feeler wheel, button, dynamic pressure meter
  • the determination of the layer thickness of crystals can be done by manually measuring the distance from the inside edge of the lid to the top edge of the crystallized layer, with the centrifuge upright before the start of the broaching process.
  • the invention has for its object to provide a method for operating a discontinuously operating centrifuge, with which a hitherto impossible insight into the complex and fast-running processes within a centrifuge drum is guaranteed and, through appropriate assignment of the values to be measured, also a fully automatic program sequence with optimal Profitability are made possible.
  • the disadvantages of the known methods are to be avoided.
  • this object is achieved in that the layer thickness of the solid layer deposited on the drum wall is measured during operation and the filling material supply and the supply of the washing liquid quantity are regulated as a function of a predefined target layer thickness of the solid layer deposited.
  • the particular advantage of a continuous, preferably non-contact measurement of the thickness of the deposited solid layer or the magma layer in a sugar centrifuge and that after the syrup has been separated off from the remaining layer of crystals within the centrifugal drum is, inter alia, that the measurement values for the layer thickness can be linked by a corresponding link the clearance values of the filling compound in combination with an electronic programmable logic controller, a centrifuge controller can be created, which is assigned to an internal and / or external process control system with a corresponding computer program via a data connection. This also makes it possible to regulate the respective filling quantity as a function of the data of the filling material to be introduced, it also being possible to optimize the efficiency of the centrifuge.
  • the degree of crystal preservation is defined by the percentage of crystals remaining in the centrifuge after the washing process, based on the amount of crystals contained in the supplied magma.
  • the amount of washing liquid to be supplied is based on the free surface of the solid layer deposited in the drum.
  • the method according to the invention is not limited to the use for sugar centrifuges, but can be used for the centrifugation of solids with subsequent treatment with a washing liquid, in which the solids to be treated can each be dissolved in the washing liquid used.
  • the method according to the invention in conjunction with a suitably designed electronic programmable logic controller, enables an optimal adaptation to the particular nature of the feed material as well as a complete documentation of the centrifuge work.
  • a centrifuge centrifuge drum 1 consists of a perforated drum jacket 2, which is covered on the inside with a liquid-permeable filter covering is, a drum cover 3, a drum base 4 and a hub 5.
  • a washing water pipe 6 with flat jet nozzles 7, which belongs to a nozzle assembly 17, is introduced, from which water in the form of the water curtains 8 are sprayed onto the magma layer 9 for A contact-free measurement of the thickness of the magma layer 9, a device 10 with an ultrasound probe 11 is inserted into the centrifugal drum 1.
  • the wash water pipe 6 is by means of two couplings 12 and 13 and a flexible section 14, for. B. a hose connected to a wash water supply line 15.
  • the flexible section 14 enables the nozzle assembly 17 to be adjusted by means of a servo motor 16 in the direction of the arrows A via a slideway 20.
  • the filling compound is introduced into the centrifugal drum 1 via a filling pipe 18 with a filling element 19.
  • an optimal degree of filling can be achieved with regard to a desired magma layer, taking into account the drum speed and the opening cross section of the filling element 19.
  • the crystallized layer h k1 results, the volume of use of which is calculated from its volume, taking into account its specific weight and with reference to the crystal content of the magma filled into the drum 1.
  • washing water Since 1 kg of washing water dissolves approx. 3 kg of crystals, the amount of water must be reduced to a minimum in order to increase the degree of crystal preservation. For optimal cleaning of the crystals, it is important to distribute the wash water evenly over the surface of the crystals. Since after approx. 50 mm penetration depth the washing water forms a saturated solution in the crystallizate layer, which can then perform cleaning work without further dissolution, i.e. it carries off residual syrup adhering to the crystals, it is advisable to work with a large crystallizate layer thickness and the amount of washing water not to be added in% to the quantity of magma, but in kg per m2 of crystallized surface.
  • Nozzle pipes, to which the spray nozzles are attached, are usually arranged to be stationary or difficult to adjust, so that in practice there is no adjustment.
  • a simple adjustment possibility of the wash water pipe 6 by means of a servo motor 6 on a slide rail 20 with distance markings is to be provided. The distance is specified by the computer on the basis of the crystal layer measurement and the servomotor is controlled accordingly.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Organic Chemistry (AREA)
  • Centrifugal Separators (AREA)
  • Saccharide Compounds (AREA)
EP95106267A 1994-04-27 1995-04-26 Procédé de contrôle de l'efficacité d'une centrifugeuse pour sucre travaillant en discontinu Expired - Lifetime EP0679722B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4414602A DE4414602A1 (de) 1994-04-27 1994-04-27 Verfahren zur Steuerung des Nutzungsgrades einer diskontinuierlich arbeitenden Zentrifuge, insbesondere einer Zuckerzentrifuge
DE4414602 1994-04-27

Publications (3)

Publication Number Publication Date
EP0679722A2 true EP0679722A2 (fr) 1995-11-02
EP0679722A3 EP0679722A3 (fr) 1998-05-27
EP0679722B1 EP0679722B1 (fr) 2000-11-15

Family

ID=6516516

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95106267A Expired - Lifetime EP0679722B1 (fr) 1994-04-27 1995-04-26 Procédé de contrôle de l'efficacité d'une centrifugeuse pour sucre travaillant en discontinu

Country Status (5)

Country Link
EP (1) EP0679722B1 (fr)
AT (1) ATE197612T1 (fr)
DE (2) DE4414602A1 (fr)
DK (1) DK0679722T3 (fr)
ES (1) ES2151937T3 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0872282A2 (fr) * 1997-04-17 1998-10-21 Krauss-Maffei Aktiengesellschaft Centrifugeuse filtrante
EP0891814A2 (fr) * 1997-07-18 1999-01-20 Baker Hughes Incorporated Procédé et appareil pour réglage de centrifugeuses à paniers verticaux et horizontaux
EP0951642A1 (fr) * 1997-01-08 1999-10-27 Bristol-Myers Squibb Company Appareil et procedes de preparation de solutions a base de sang ou de plasma a concentration connue
EP1475156A2 (fr) * 2003-05-07 2004-11-10 THOMAS BROADBENT & SONS LIMITED Commande de charge pour centrifuges
EP2275207A1 (fr) * 2009-07-16 2011-01-19 BWS Technologie GmbH Centrifugeuse discontinue dotée d'un dispositif de commande de nettoyage et procédé de fonctionnement de la centrifugeuse
WO2011006972A1 (fr) * 2009-07-16 2011-01-20 Bws Technologie Gmbh Centrifugeuse discontinue comportant une commande de la quantité de produit de remplissage et procédé pour faire fonctionner la centrifugeuse
US10549288B2 (en) 2012-03-14 2020-02-04 Bma Braunschweigische Maschinenbauanstalt Ag Device having a discontinuously operating centrifuge for separating syrup from sugar massecuites and method for operating such a device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008062055B4 (de) 2008-12-12 2021-07-22 Gea Mechanical Equipment Gmbh Verfahren zur Überwachung der automatisierten Entleerung einer Zentrifuge

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0042899A1 (fr) * 1980-07-01 1982-01-06 FIVES-CAIL BABCOCK, Société anonyme Essoreuse centrifuge à panier cylindrique équipée d'un contrôleur de chargement et d'une rampe de lavage
DE3515915A1 (de) * 1985-05-03 1986-11-06 Braunschweigische Maschinenbauanstalt AG, 3300 Braunschweig Ueberwachungsverfahren und vorrichtung zur kontrolle des sirupablaufes bei periodisch arbeitenden zuckerzentrifugen
DE3615013C1 (en) * 1986-05-02 1987-06-11 Krauss Maffei Ag Method for monitoring the drying phase in filtration centrifuges
EP0318370A1 (fr) * 1987-11-23 1989-05-31 Compagnie Francaise De Sucrerie Procédé de mesure de l'épaisseur d'un dépôt solide sur les parois d'une centrifugeuse, les moyens pour sa mise en oeuvre et leur application particulière en sucrerie
EP0406094A1 (fr) * 1989-06-29 1991-01-02 F C B Procédé de conduite automatisée d'une essoreuse centrifuge à marche discontinue

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6900504U (de) * 1969-01-02 1969-05-29 Johannes Dr Wolf Geraet zum verteilen von gestauter warmluft in wohnraumen
DE3822225C1 (fr) * 1988-07-01 1989-07-20 Laboratorium Prof. Dr. Rudolf Berthold, 7547 Wildbad, De

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0042899A1 (fr) * 1980-07-01 1982-01-06 FIVES-CAIL BABCOCK, Société anonyme Essoreuse centrifuge à panier cylindrique équipée d'un contrôleur de chargement et d'une rampe de lavage
DE3515915A1 (de) * 1985-05-03 1986-11-06 Braunschweigische Maschinenbauanstalt AG, 3300 Braunschweig Ueberwachungsverfahren und vorrichtung zur kontrolle des sirupablaufes bei periodisch arbeitenden zuckerzentrifugen
DE3615013C1 (en) * 1986-05-02 1987-06-11 Krauss Maffei Ag Method for monitoring the drying phase in filtration centrifuges
EP0318370A1 (fr) * 1987-11-23 1989-05-31 Compagnie Francaise De Sucrerie Procédé de mesure de l'épaisseur d'un dépôt solide sur les parois d'une centrifugeuse, les moyens pour sa mise en oeuvre et leur application particulière en sucrerie
EP0406094A1 (fr) * 1989-06-29 1991-01-02 F C B Procédé de conduite automatisée d'une essoreuse centrifuge à marche discontinue
EP0406095A1 (fr) * 1989-06-29 1991-01-02 F C B Procédé de conduite automatisée d'une essoreuse centrifuge à marche discontinue

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0951642A1 (fr) * 1997-01-08 1999-10-27 Bristol-Myers Squibb Company Appareil et procedes de preparation de solutions a base de sang ou de plasma a concentration connue
EP0951642A4 (fr) * 1997-01-08 2003-08-27 Bristol Myers Squibb Co Appareil et procedes de preparation de solutions a base de sang ou de plasma a concentration connue
EP0872282A2 (fr) * 1997-04-17 1998-10-21 Krauss-Maffei Aktiengesellschaft Centrifugeuse filtrante
EP0872282A3 (fr) * 1997-04-17 1999-09-01 Krauss-Maffei Aktiengesellschaft Centrifugeuse filtrante
EP0891814A2 (fr) * 1997-07-18 1999-01-20 Baker Hughes Incorporated Procédé et appareil pour réglage de centrifugeuses à paniers verticaux et horizontaux
EP0891814A3 (fr) * 1997-07-18 1999-11-03 Baker Hughes Incorporated Procédé et appareil pour réglage de centrifugeuses à paniers verticaux et horizontaux
US6063292A (en) * 1997-07-18 2000-05-16 Baker Hughes Incorporated Method and apparatus for controlling vertical and horizontal basket centrifuges
US6328897B1 (en) 1997-07-18 2001-12-11 Baker Hughes Incorporated Method and apparatus for controlling vertical and horizontal basket centrifuges
EP1475156A2 (fr) * 2003-05-07 2004-11-10 THOMAS BROADBENT & SONS LIMITED Commande de charge pour centrifuges
EP1475156A3 (fr) * 2003-05-07 2005-10-26 THOMAS BROADBENT & SONS LIMITED Commande de charge pour centrifuges
US7763168B2 (en) 2003-05-07 2010-07-27 Thomas Broadbent & Sons Ltd Control of centrifuges
EP2275207A1 (fr) * 2009-07-16 2011-01-19 BWS Technologie GmbH Centrifugeuse discontinue dotée d'un dispositif de commande de nettoyage et procédé de fonctionnement de la centrifugeuse
WO2011006972A1 (fr) * 2009-07-16 2011-01-20 Bws Technologie Gmbh Centrifugeuse discontinue comportant une commande de la quantité de produit de remplissage et procédé pour faire fonctionner la centrifugeuse
WO2011006969A1 (fr) * 2009-07-16 2011-01-20 Bws Technologie Gmbh Centrifugeuse discontinue comportant un dispositif de commande de lavage et procédé pour faire fonctionner la centrifugeuse
EP2277627A1 (fr) * 2009-07-16 2011-01-26 BWS Technologie GmbH Centrifugeuse discontinue dotée d'une commande des quantités de matières de remplissage et procédé de fonctionnement de la centrifugeuse
US10549288B2 (en) 2012-03-14 2020-02-04 Bma Braunschweigische Maschinenbauanstalt Ag Device having a discontinuously operating centrifuge for separating syrup from sugar massecuites and method for operating such a device

Also Published As

Publication number Publication date
DE59508848D1 (de) 2000-12-21
DE4414602A1 (de) 1995-11-02
ATE197612T1 (de) 2000-12-15
EP0679722A3 (fr) 1998-05-27
ES2151937T3 (es) 2001-01-16
DK0679722T3 (da) 2001-02-26
EP0679722B1 (fr) 2000-11-15

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