WO2020120437A1 - Système d'application d'une contrainte sur des particules au moyen d'impulsions électriques - Google Patents

Système d'application d'une contrainte sur des particules au moyen d'impulsions électriques Download PDF

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Publication number
WO2020120437A1
WO2020120437A1 PCT/EP2019/084332 EP2019084332W WO2020120437A1 WO 2020120437 A1 WO2020120437 A1 WO 2020120437A1 EP 2019084332 W EP2019084332 W EP 2019084332W WO 2020120437 A1 WO2020120437 A1 WO 2020120437A1
Authority
WO
WIPO (PCT)
Prior art keywords
particles
pipe section
electrodes
medium
marx
Prior art date
Application number
PCT/EP2019/084332
Other languages
German (de)
English (en)
Inventor
Holger Lieberwirth
Erik Anders
Max Hesse
Petra Hoske
Thomas Krampitz
Günter KUNZE
Margarita Mezzetti
Oleg Popov
Matthias Voigt
Original Assignee
Technische Universität Bergakademie Freiberg
Technische Universität Dresden
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 Technische Universität Bergakademie Freiberg, Technische Universität Dresden filed Critical Technische Universität Bergakademie Freiberg
Priority to CN201980081980.3A priority Critical patent/CN113301998B/zh
Priority to EP19820710.2A priority patent/EP3894080A1/fr
Priority to AU2019398306A priority patent/AU2019398306A1/en
Priority to EA202191520A priority patent/EA202191520A1/ru
Publication of WO2020120437A1 publication Critical patent/WO2020120437A1/fr

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Classifications

    • 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 devices for stressing particles by means of electro pulses with a device for supplying particles, at least one vertically arranged pipe section with a reaction chamber for stressing particles and a device for discharging particles.
  • a system for continuous electrohydraulic comminution and mixing of substances in a liquid medium is known.
  • the electrical discharges occur through the liquid surrounding the material to be shredded, usually water. Due to the plasma channel created in the liquid, a pressure wave is generated in it, which hits the material to be shredded and stresses it.
  • the necessary generation of the electrical impulses takes place by means of resonant circuits, which results in a correspondingly slow increase in impulses.
  • the liquid reservoir is pressure shock resistant in order to withstand the indirect exposure of the substances (pulverization) due to the shock wave generated in the water by means of electrical impulses.
  • Flat electrodes are also described in the device in order to maximize the effect of the shock wave.
  • Another method for comminuting solids by means of electrical impulses is electrodynamic comminution.
  • a device and a method for the continuous comminution of solids by means of electrical pulses are known from the document DE 10 2014 008 989 A1.
  • This has at least one reaction space to which the solids are fed by means of a transport means, the reaction space being located in a reaction vessel.
  • This has at least one electrode set consisting of at least two electrodes arranged at a predetermined distance from one another, which form an electrode gap in the reaction space. At least one central electrode and electrodes surrounding it are present.
  • a device for generating electrical pulses delivers the electrical pulses to the electrodes of the electrode set, the solids being pressed against the electrode set until the solids present there are comminuted by means of the electrical pulses so that the comminuted solids are smaller than the distance between them are opposite electrodes.
  • the shredded solids pass through the gap between the electrodes together with the flowing means of transport. Continuous comminution is essentially only possible with solids of approximately the same size. No or insufficient comminution can lead to the accumulation of solid
  • the publication WO 2012 129 713 A relates to an electrode arrangement for an electrodynamic fragmentation system with a passage opening or a passage channel for material to be fragmented and with one or more pairs of electrodes.
  • high-voltage pulses By applying high-voltage pulses to the fragments of the electrodes, high-voltage discharges are generated within the passage opening or the passage channel.
  • Rod-shaped, pointed or rounded electrodes protrude from the edge of a surrounding jacket and, if appropriate, from a centrally located dome-shaped insulation body into the comminution space in order to obtain approximately spherical comminution material.
  • the electrode distance is smaller than the maximum particle size that can pass through the passage opening or the passage channel.
  • JP 11-33 430 A discloses a comminution process and a device for carrying out the process.
  • the electrode plates form a tapering gap.
  • the particles must be smaller than the distance between the electrode plates at the respective point in order to pass through the tapering gap.
  • a solution consisting of shredding and classifying function is described. The material must therefore be shredded in order to pass through the facility.
  • the object of the invention specified in claim 1 is to at least claim particles in such a way that they are already better or completely digested in coarser fractions for subsequent mechanical comminution. This object is achieved with the features listed in claim 1.
  • the devices for stressing particles by means of electrical pulses with a device for supplying particles, at least one vertically arranged pipe section with a reaction chamber for stressing particles and a device for discharging particles are characterized in particular by the fact that they are already in coarser fractions for subsequent comminution better or completely open minded.
  • the pipe section and thus the reaction space is a flow channel of a flowable medium.
  • a device conveying the medium is connected to the pipe section in such a way that the medium flows against the direction of movement of particles supplied to the pipe section and sinking through the pipe section.
  • the pipe section has at least two electrodes spaced apart from one another and connected to at least one Marx generator as a pulse voltage generator, the pulse rise time of the Marx generator being less than 500 ns.
  • the electrodes end with or in front of the inner surface of the pipe section, so that the electrodes do not protrude into the pipe section and do not hinder the flow of the medium in the pipe section.
  • the particles passing through the pipe section are electrodynamically stressed by means of the electrical impulses, which also includes the electrodynamic comminution of particles.
  • the so-called Marx generator is used, which is a surge voltage generator. This is used to generate pulses with a pulse rise time of less than 500 ns. During these short rise times, the discharge between the electrodes arranged at a distance from one another preferably takes place directly through the particle or a plurality of particles simultaneously. The resulting plasma channel leads to an immediate stress on the particle.
  • the plasma channel within the particle is accompanied by high pressures and temperatures, which weaken or completely loosen the bonds along the discharge channel and are broken down within the particle. This results in a reduction in the strength of the particle and thus also supports selective decomposition into different components.
  • the direct energy input in the particles to be stressed is energy-efficient and advantageously does not require a pressure-shock-proof pipe section as a reaction space for stressing particles.
  • the pipe section can have a cross section that is constant over its length, so that the flow of the medium is not influenced thereby either.
  • the particles can be checked and discharged size-selectively. Continuous operation is easy to implement.
  • the voltage of the Marx generator can be, for example, 400 kV to 600 kV.
  • the frequency can be equal to or greater than 25 Hz.
  • the energy range can be greater than / equal to 7 J to equal to / less than 700 J.
  • the device is further characterized by the fact that no movable conveying devices are required in the reaction space. Furthermore, the particles can also pass through the process space without stress and the associated damage or comminution.
  • the residence time of the particles in the reaction space can advantageously be set as a function of the material, the throughput and / or the size by means of the device which conveys the medium, the medium flowing against the direction of movement of particles supplied to and falling through the pipe section. Unintentionally produced fine particles and very fine particles can be continuously discharged from the reaction space by means of the flowing medium against the direction of the particles to be damaged.
  • the electrodes do not protrude into the reaction space, so that contact between the particles to be stressed and the electrodes and thus abrasive wear on the electrodes is largely avoided.
  • the electrodes can advantageously be controlled individually. Respective electrode pairs can be controlled simultaneously or sequentially, it being possible for electrode pairs to be arranged next to one another and / or one below the other.
  • the particles also as mineral grains, are therefore advantageously present in coarser fractions in a better or completely digested form for subsequent comminution, so that less energy may be required for this.
  • the device for feeding particles is optionally arranged so that the particles to be loaded sink from top to bottom through the pipe section. So that can the particles are also fed continuously, so that a continuous loading of particles with electrical impulses in the pipe section can be realized.
  • a plurality of electrodes are distributed around the inner circumference of the tube piece and are arranged at a distance from one another. Furthermore, the electrodes are connected to pulse voltage generators.
  • Two electrodes each are optionally arranged in at least two mutually spaced planes of the pipe section, these electrodes being connected to the Marx generator or to Marx generators.
  • the loading of the particles can thus take place in several levels while the particles are sinking.
  • electrodes are distributed around the inner circumference of the pipe section in a plane and / or in planes spaced apart from one another. Furthermore, the electrodes are connected to the Marx generator or to Marx generators. The electrodes can also be arranged helically.
  • the electrodes of one level can be connected to the Marx generator or to Marx generators. Furthermore, the Marx generator or the Marx generators are connected together with a control device in such a way that the voltages and / or impulses of the planes which are present at the same time differ from one another.
  • the device for discharging particles is optionally arranged such that the particles sinking through the pipe section are transported away from the device for stressing particles.
  • the device conveying the medium is connected to a control device, so that the flow velocity of the medium and thus the speed of the particles sinking through the pipe section can be influenced.
  • a device for the discharge of fine and / or very fine particles is optionally arranged outside the reaction space in the direction of the device for supplying particles.
  • This can be an opening in the wall of the pipe section, which can be connected to a suction device.
  • the device for supplying particles, the vertically arranged pipe section, the medium-conveying device and lines are a medium-carrying circuit.
  • the medium can in particular be a gas or a liquid.
  • Fig. 1 shows a device for stressing particles by means of electrical pulses
  • Fig. 2 shows a piece of pipe with electrodes and a reaction space.
  • a device for stressing particles 9 by means of electrical pulses 11 essentially consists of a device 1 for supplying particles 9, a vertically arranged pipe section 2 with a reaction chamber, a device 3 for discharging particles 9, a device 4 which conveys medium 10, electrodes 5 , a Marx generator 6 and a control device 7.
  • Fig. 1 shows a device for stressing particles 9 by means of electrical pulses 11 in a basic representation.
  • the device 1 for supplying particles 9 is arranged such that the particles 9 sink from top to bottom through the pipe section 2.
  • the device 3 for discharging particles 9 is located in such a way that the particles 9 that have sunk through the pipe section 2 are transported away from the device for stressing particles 9.
  • the device 4 conveying the medium 10 is connected to the control device 7 such that the flow velocity of the medium 11 and thus the speed of the particles 9 falling through the pipe section 2 can be influenced.
  • a device 8 for discharging fine and / or very fine particles 9 can be arranged in the direction of the device 1 for supplying particles 9.
  • FIG. 2 shows a tube section 2 with electrodes 5 and a reaction space in a basic representation.
  • the pipe section 2 and thus the reaction space represents a flow channel of the flowable medium 10.
  • the device 4 conveying the medium 10 with the pipe section 2 connected in such a way that the medium 10 flows against the direction of movement of the particles 9 fed to the pipe section 2 and falling through the pipe section 2.
  • the pipe section 2 has the electrodes 5 spaced apart and connected to the Marx generator 6, the electrodes 5 ending with or in front of the inner surface of the pipe section 2, so that the electrodes 5 do not protrude into the pipe section 2 and the flow of the Do not hinder the medium 10 in the pipe section 2.
  • Electrodes 5 can also be connected to several Marx generators 6. This means that different pulses can be generated in their frequency and / or pulse duration.
  • the voltage can be, for example, 400 kV to 600 kV.
  • the frequency can be equal to or greater than 25 Hz.
  • the energy range can be greater than / equal to 7 J to equal to / less than 700 J.
  • a plurality of electrodes 5 can be distributed around the inner circumference of the pipe section 2 and arranged at a distance from one another.
  • an electrode 5 can be located in at least two mutually spaced planes of the pipe section 2.
  • electrodes 5 can also be arranged in a plane and / or in mutually spaced planes distributed around the inner circumference of the pipe section 2, so that the electrodes 5 are arranged in a screw shape.
  • At least the device 1 for supplying particles, the vertically arranged pipe section 2, the device 4 conveying the medium 10 and lines can be a circuit carrying the medium 10.
  • the device 3 can also be integrated into this circuit for the discharge of particles 9.
  • the medium 10 is a gas or a liquid.

Landscapes

  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Disintegrating Or Milling (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)

Abstract

L'invention concerne des systèmes d'application d'une contrainte sur des particules (9) au moyen d'impulsions électriques (11) comprenant un dispositif servant à amener des particules, au moins une pièce tubulaire (2) disposée verticalement pourvue d'une chambre de réaction servant à appliquer une contrainte sur des particules et un dispositif d'évacuation de particules. Les systèmes se caractérisent en ce qu'il sont mieux ou totalement enclin à réaliser par la suite une défragmentation déjà en fractions plus grosses. La pièce tubulaire (2) et ainsi la chambre de réaction sont à cet effet un canal d'écoulement d'un milieu (10) fluide. Par ailleurs, un système (4) de transport du milieu est relié à la pièce tubulaire de telle sorte que le milieu s'écoule dans le sens opposé au sens de déplacement de particules (9) amenées à la pièce tubulaire et descendant à travers la pièce tubulaire (2). La pièce tubulaire comporte au moins deux électrodes (5) disposées à distance l'une de l'autre et reliées à au moins un générateur de tension pulsée sous la forme d'un générateur de Marx (6). Par ailleurs, les électrodes se terminent avec ou avant la surface intérieure de la pièce tubulaire de sorte que les électrodes (5) ne dépassent pas dans la pièce tubulaire (2) et n'empêchent pas l'écoulement du milieu dans la pièce tubulaire.
PCT/EP2019/084332 2018-12-10 2019-12-10 Système d'application d'une contrainte sur des particules au moyen d'impulsions électriques WO2020120437A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201980081980.3A CN113301998B (zh) 2018-12-10 2019-12-10 借助于电脉冲对颗粒施力的设备
EP19820710.2A EP3894080A1 (fr) 2018-12-10 2019-12-10 Système d'application d'une contrainte sur des particules au moyen d'impulsions électriques
AU2019398306A AU2019398306A1 (en) 2018-12-10 2019-12-10 Device for stressing particles by means of electric pulses
EA202191520A EA202191520A1 (ru) 2018-12-10 2019-12-10 Устройство для воздействия на частицы с помощью электрических импульсов

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018131541.4A DE102018131541A1 (de) 2018-12-10 2018-12-10 Einrichtung zur Beanspruchung von Partikeln mittels Elektroimpulsen
DE102018131541.4 2018-12-10

Publications (1)

Publication Number Publication Date
WO2020120437A1 true WO2020120437A1 (fr) 2020-06-18

Family

ID=68887023

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/084332 WO2020120437A1 (fr) 2018-12-10 2019-12-10 Système d'application d'une contrainte sur des particules au moyen d'impulsions électriques

Country Status (6)

Country Link
EP (1) EP3894080A1 (fr)
CN (1) CN113301998B (fr)
AU (1) AU2019398306A1 (fr)
DE (1) DE102018131541A1 (fr)
EA (1) EA202191520A1 (fr)
WO (1) WO2020120437A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1341851A (fr) 1962-12-17 1963-11-02 Enertron Corp Procédé et appareil pour le traitement de matières, notamment par pulvérisation et le mélange de matières par une nouvelle action électrohydraulique
US3207447A (en) * 1963-08-22 1965-09-21 Kennecott Copper Corp Method of crushing ores with explosive energy released in a liquid medium, and apparatus therefor
DE19534232A1 (de) * 1995-09-15 1997-03-20 Karlsruhe Forschzent Verfahren zur Zerkleinerung und Zertrümmerung von aus nichtmetallischen oder teilweise metallischen Bestandteilen konglomerierten Festkörpern und zur Zerkleinerung homogener nichtmetallischer Festkörper
JPH1133430A (ja) 1997-07-23 1999-02-09 Nittetsu Mining Co Ltd 電気破砕方法及び装置
DE19902010A1 (de) * 1999-01-21 2000-08-10 Karlsruhe Forschzent Verfahren zur Aufbereitung von Asche aus Müllverbrennungsanlagen und von mineralischen Rückständen durch Entsalzung und künstlichen Alterung mittels elektrodynamischer Unter-Wasser-Prozesse und Anlage zur Durchführung des Verfahrens
WO2012129713A1 (fr) 2011-03-30 2012-10-04 Selfrag Ag Système d'électrodes pour un dispositif de fragmentation électrodynamique
DE102014008989A1 (de) 2014-06-13 2016-01-28 Technische Universität Bergakademie Freiberg Einrichtung und Verfahren zur kontinuierlichen Zerkleinerung von Feststoffen mittels Elektroimpulsen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2016411989B2 (en) * 2016-06-15 2022-10-06 Selfrag Ag Method of treating a solid material by means of high voltage discharges
MY189166A (en) * 2018-05-31 2022-01-30 Jk Chee Marcus Dehydration and disintegration apparatus and system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1341851A (fr) 1962-12-17 1963-11-02 Enertron Corp Procédé et appareil pour le traitement de matières, notamment par pulvérisation et le mélange de matières par une nouvelle action électrohydraulique
US3207447A (en) * 1963-08-22 1965-09-21 Kennecott Copper Corp Method of crushing ores with explosive energy released in a liquid medium, and apparatus therefor
DE19534232A1 (de) * 1995-09-15 1997-03-20 Karlsruhe Forschzent Verfahren zur Zerkleinerung und Zertrümmerung von aus nichtmetallischen oder teilweise metallischen Bestandteilen konglomerierten Festkörpern und zur Zerkleinerung homogener nichtmetallischer Festkörper
JPH1133430A (ja) 1997-07-23 1999-02-09 Nittetsu Mining Co Ltd 電気破砕方法及び装置
DE19902010A1 (de) * 1999-01-21 2000-08-10 Karlsruhe Forschzent Verfahren zur Aufbereitung von Asche aus Müllverbrennungsanlagen und von mineralischen Rückständen durch Entsalzung und künstlichen Alterung mittels elektrodynamischer Unter-Wasser-Prozesse und Anlage zur Durchführung des Verfahrens
WO2012129713A1 (fr) 2011-03-30 2012-10-04 Selfrag Ag Système d'électrodes pour un dispositif de fragmentation électrodynamique
DE102014008989A1 (de) 2014-06-13 2016-01-28 Technische Universität Bergakademie Freiberg Einrichtung und Verfahren zur kontinuierlichen Zerkleinerung von Feststoffen mittels Elektroimpulsen

Also Published As

Publication number Publication date
EA202191520A1 (ru) 2021-08-26
CN113301998A (zh) 2021-08-24
CN113301998B (zh) 2024-01-30
EP3894080A1 (fr) 2021-10-20
AU2019398306A1 (en) 2021-07-01
DE102018131541A1 (de) 2020-06-10

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