EP1266693B1 - Appareil de fragmentation et de concassage avec ensemble d'électrodes symétriques - Google Patents

Appareil de fragmentation et de concassage avec ensemble d'électrodes symétriques Download PDF

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Publication number
EP1266693B1
EP1266693B1 EP02009524A EP02009524A EP1266693B1 EP 1266693 B1 EP1266693 B1 EP 1266693B1 EP 02009524 A EP02009524 A EP 02009524A EP 02009524 A EP02009524 A EP 02009524A EP 1266693 B1 EP1266693 B1 EP 1266693B1
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EP
European Patent Office
Prior art keywords
electrode
reaction vessel
insulator
counter
axis
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.)
Expired - Lifetime
Application number
EP02009524A
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German (de)
English (en)
Other versions
EP1266693A3 (fr
EP1266693A2 (fr
Inventor
Wolfgang Dr. Frey
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.)
Forschungszentrum Karlsruhe GmbH
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Forschungszentrum Karlsruhe GmbH
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Publication of EP1266693A2 publication Critical patent/EP1266693A2/fr
Publication of EP1266693A3 publication Critical patent/EP1266693A3/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/18—Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/18—Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating
    • B02C2019/183—Crushing by discharge of high electrical energy

Definitions

  • the invention relates to a rotationally symmetrical electrode arrangement according to the preamble of claim 1 and as for example from DE 19534232A1 is known with Preventive measures locally destructive electric field densities.
  • Such an electrode arrangement is part of a fragmentation system here. It consists of a rod-shaped electrode which can be subjected to high voltage, the high-voltage electrode and a counterelectrode which is always at electrical reference potential . Both have a given distance from each other.
  • the rod longitudinal axis of the high voltage electrode is located on the axis of rotation.
  • the counter electrode is part of the bottom of a reaction vessel. It is filled with process fluid and is charged with process material, which is fractionated via pulse-like and powerful electrical discharge in the electrode gap to a required particle size range.
  • the high voltage electrode is sheathed with an insulator leaving a blank end region of predetermined length. This bare end area is completely submerged in the process fluid.
  • the electrode arrangement is connected to an electrical energy store, a Marx generator z. B., connected when reaching a predetermined charging voltage over a spark gap is discharged into the two-electrode system.
  • a Marx generator z. B. connected when reaching a predetermined charging voltage over a spark gap is discharged into the two-electrode system.
  • reaction liquid often water but also others suitable liquids, process material in the form of debris, any conglomeration baked tight together Solid, tilted.
  • the discharge is via the setting of the electrical parameters controlled so that there are high-current discharge channels form between the two electrodes and thereby the same by electrical action and mechanically over Shock waves shatter.
  • the grain size of the fragments can be controlled by the number of discharges within limits. At the deepest portion of the reaction vessel are the finely shattered Parts removed (see DE 195 34 232).
  • Central but highly loaded component of such a Fragmentierstrom is the in the process liquid in the reaction vessel protruding electrode, in particular the place where the three media: bare electrode, Isoliermantelende and process fluid - that is a ring area - at the same time meet each other.
  • the high voltage electrode is from the high voltage terminal up to the bare peak area under consideration of pulsed operation with tough insulator material immediately sheathed around the bare electrode surface, which has direct contact with the process fluid, targeted to keep small.
  • Loss currents that occur before the ignition of the fragment Discharge channels between electrode tip and the counter electrode in the bottom of the reaction vessel due the electrolytic conductivity of the process fluid flow, should be prevented, but at least on a tolerable Be limited measure. This will not or at least but consumes less energy in the pre-discharge phase. In order to there is more energy in the fragmentation-effective per discharge Discharge phase available.
  • Essential for the effectiveness of the Fragmentierstrom is that the electrical breakdown through the Fragmentiergut through earlier than just through the process liquid, the water for example.
  • the invention is based on the object with the electrode their encasing insulator made of tough material in their geometry in the border area insulator electrode tip process liquid so that the tangential to the insulator surface directed field strength at the insulator front at the transition to Electrode is as low as possible.
  • the high-voltage electrode at its bare area which is completely immersed in the process liquid, following the insulator, an annular metallic bead round to the environment to relieve the electric field in this area.
  • the insulator pushes it with his forehead or comes with her there very close to the bead.
  • the electrode runs out into the likewise bare electrode tip and faces the counterelectrode in the reaction vessel at the predetermined distance.
  • a truncated cone-shaped dielectric insert of non-brittle material is located in the interelectrode space. He displaces the electric field into his interior through his presence.
  • the insert lies with its smaller opening on the bottom of the reaction vessel rotationally symmetrical to the rotational axis.
  • a collecting rotationally shaped structure is suitable, the axis of which lies on the electrode arrangement and in the region of its axis of rotation has a through opening for the diarrhea of the fragments, which may be funnel-shaped, but in any case the formation of discharge channels to the counter electrode hints.
  • the insert is not permeable according to claim 2 and has it for the entirewidallende process good collection effect for Center out, or he is perforated according to claim 3 and has accordingly the hole size for the constructiveallende process material sieve or separation effect, in that, measured at the hole width, large-grained process material to the center through the small truncated cone casing opening and, measured against this, small-grained process material falls through and sinks.
  • the rotationally symmetric structure is: insulator electrode 1, 3 shown in fragmentary form.
  • the arrangement is here due to the nature of the symmetry only half of the axis of rotation 8, the left edge of the picture.
  • insulator 3 High-voltage electrode 1 and process fluid 6, here water, all three meet each other (three-media junction / area), exists field-technically, the field relief.
  • the high voltage electrode 1 has where it goes from the enveloping insulator 3 enters the process liquid 6 an annular bead 9 around the circumference, outwardly has no edges, so with the radius equal to half Bead thickness is rounded.
  • the rounding can also be done with others Measured to be carried out, this one is only manufacturing technology very easy.
  • the density of the equipotential lines 11 is in this three-media impulse area low, therefore starting from there very much probably no discharge channels. They are most likely to form or preferably in areas of high equipotential line density from, that is pointing to the counter electrode 2 Area of the front of the bead 9 or just the electrode tip, as the arrangement of the line crowd 11 shows.
  • the discharges be in the front area of the bare high-voltage mounting electrode 1 preferably start.
  • the truncated cone-shaped, indicated in Figure 2 insert 4 here is a grid of dielectric, tough material such as PE or nylon or the like. That's enough Fragmented good can trickle through in the local area. This use tightens depending on the dielectric property to some extent the equipotential lines 11 in addition to themselves and thus continues the density of the same in the electrode area down. The prerequisite that discharge channels start there can be quite significant and thus by these measures effectively degraded.
  • the design of the counter electrode 2 is process-dependent and here e.g. only the bottom of the reaction vessel 5, from which it electrically immediately goes back to the Marx generator 10.

Landscapes

  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Ceramic Capacitors (AREA)
  • Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
  • Disintegrating Or Milling (AREA)

Claims (3)

  1. Dispositif de fragmentation pour fragmenter ou concasser un produit à l'aide de décharges électriques impulsionnelles de puissance entre les électrodes (1, 2) comprenant :
    un réacteur (5) rempli du liquide de procédé (6) et dans lequel on introduit le produit à traiter (7),
    un ensemble d'électrodes symétriques en rotation comprenant une électrode de haute tension (1) en forme de tige, soumise à haute tension et
    une contre-électrode (2) mise à un potentiel électrique fixe,
    les électrodes ayant une distance prédéfinie au niveau de l'axe de rotation (8),
    dispositif dans lequel
    l'axe longitudinal de la tige constituant l'électrode de haute tension (1) se situe sur l'axe de rotation (8),
    la contre-électrode (2) fait partie du fond du réacteur (5),
    l'électrode de haute tension (2) est entourée d'un isolateur (3) laissant libre l'extrémité nue sur une longueur prédéfinie et cette extrémité nue est complètement immergée dans le liquide de procédé (5),
    caractérisé en ce que
    l'électrode de haute tension (1) comporte dans sa zone nue, plongée dans le liquide de procédé (6), à la jonction de l'isolateur (3), un bourrelet (9), annulaire métallique, rond vis-à-vis de l'environnement pour affaiblir le champ électrique à cet endroit et se termine par une pointe d'électrode exposée à la contre-électrode (2) dans le réacteur (5), et/ou un insert diélectrique (4), collecteur, symétrique en rotation, pour repousser le champ électrique et dont l'axe se situe sur l'axe de rotation (8) et qui comporte, au niveau de son axe, un orifice traversant pour le passage des fragments, et l'insert (4) s'appuie par son ouverture contre le fond du réacteur (5).
  2. Dispositif de fragmentation selon la revendication 1,
    caractérisé en ce que
    l'insert diélectrique (4) a une forme d'enveloppe tronconique et sa paroi n'est pas perméable au produit fragmenté.
  3. Dispositif de fragmentation selon la revendication 1,
    caractérisé en ce que
    l'insert diélectrique (4) a une forme d'enveloppe tronconique et sa paroi est perforée pour être perméable au produit fragmenté inférieur à une granulométrie prédéfinie.
EP02009524A 2001-06-01 2002-04-26 Appareil de fragmentation et de concassage avec ensemble d'électrodes symétriques Expired - Lifetime EP1266693B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10126646A DE10126646C2 (de) 2001-06-01 2001-06-01 Rotationssymmetrische Elektrodenanordnung aus einer mit Hochspannung beaufschlagbaren, stabförmigen Elektrode
DE10126646 2001-06-01

Publications (3)

Publication Number Publication Date
EP1266693A2 EP1266693A2 (fr) 2002-12-18
EP1266693A3 EP1266693A3 (fr) 2004-10-20
EP1266693B1 true EP1266693B1 (fr) 2005-10-05

Family

ID=7686836

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02009524A Expired - Lifetime EP1266693B1 (fr) 2001-06-01 2002-04-26 Appareil de fragmentation et de concassage avec ensemble d'électrodes symétriques

Country Status (3)

Country Link
EP (1) EP1266693B1 (fr)
AT (1) ATE305820T1 (fr)
DE (2) DE10126646C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8138952B2 (en) 2007-03-16 2012-03-20 Selfrag Ag Sample holder and assembly for the electrodynamic fragmentation of samples

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006037914B3 (de) * 2006-08-11 2008-05-15 Ammann Schweiz Ag Reaktionsgefäß einer hochspannungsimpulstechnischen Anlage und Verfahren zum Zertrümmern/Sprengen spröder, hochfester keramischer/mineralischer Werk-/Verbundwerkstoffe
CN112169965B (zh) * 2020-09-22 2022-02-01 东北大学 一种矿石高压脉冲放电预处理系统及其使用方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1719075A1 (ru) * 1990-04-06 1992-03-15 Экспериментальный кооператив "ЭГИДА-А" Устройство дл электрогидравлического дроблени и измельчени твердых материалов
DE19534232C2 (de) * 1995-09-15 1998-01-29 Karlsruhe Forschzent Verfahren zur Zerkleinerung und Zertrümmerung von aus nichtmetallischen oder teilweise metallischen Bestandteilen konglomerierten Festkörpern und zur Zerkleinerung homogener nichtmetallischer Festkörper
DE19545580C2 (de) * 1995-12-07 2003-02-13 Rheinmetall W & M Gmbh Verfahren und Anordnung zum Aufschluß von elastischen Materialien in Verbindung mit metallischen Materialien
DE19736027C2 (de) * 1997-08-20 2000-11-02 Tzn Forschung & Entwicklung Verfahren und Vorrichtung zum Aufschluß von Beton, insbesondere von Stahlbetonplatten

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8138952B2 (en) 2007-03-16 2012-03-20 Selfrag Ag Sample holder and assembly for the electrodynamic fragmentation of samples

Also Published As

Publication number Publication date
EP1266693A3 (fr) 2004-10-20
DE10126646C2 (de) 2003-04-10
DE50204434D1 (de) 2005-11-10
ATE305820T1 (de) 2005-10-15
DE10126646A1 (de) 2002-12-12
EP1266693A2 (fr) 2002-12-18

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