EP2867902B1 - Ionenaustauscherharz-zerkleinerungsvorrichtung und ionenaustauscherharz-zerkleinerungsverfahren - Google Patents

Ionenaustauscherharz-zerkleinerungsvorrichtung und ionenaustauscherharz-zerkleinerungsverfahren Download PDF

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Publication number
EP2867902B1
EP2867902B1 EP13759434.7A EP13759434A EP2867902B1 EP 2867902 B1 EP2867902 B1 EP 2867902B1 EP 13759434 A EP13759434 A EP 13759434A EP 2867902 B1 EP2867902 B1 EP 2867902B1
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EP
European Patent Office
Prior art keywords
exchange resin
ion
tank
grinding
milling
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.)
Active
Application number
EP13759434.7A
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German (de)
English (en)
French (fr)
Other versions
EP2867902A1 (de
Inventor
Henning Fehrmann
Daniel SCHÜTZE
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.)
Westinghouse Electric Germany GmbH
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Westinghouse Electric Germany GmbH
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Publication date
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Publication of EP2867902A1 publication Critical patent/EP2867902A1/de
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    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/28—Treating solids
    • G21F9/30—Processing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms 
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/83—Mixing plants specially adapted for mixing in combination with disintegrating operations
    • B01F33/833—Devices with several tools rotating about different axis in the same receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/836—Mixing plants; Combinations of mixers combining mixing with other treatments
    • B01F33/8361—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating
    • B01F33/83613—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating by grinding or milling
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/04—Treating liquids
    • G21F9/06—Processing
    • G21F9/12—Processing by absorption; by adsorption; by ion-exchange
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/28—Treating solids
    • G21F9/30—Processing
    • G21F9/301—Processing by fixation in stable solid media
    • G21F9/302—Processing by fixation in stable solid media in an inorganic matrix
    • G21F9/304—Cement or cement-like matrix

Definitions

  • the invention relates to a lonenSerharzzerklein mecanicsvoriques, comprising a tank for receiving an aqueous lonenSerharzsuspension, provided in the tank agitator, provided outside the tank grinding device and a pumping device for conveying the aqueous ion exchange resin suspension from the tank to the grinding device.
  • the patent document WO9409904 A1 relates to a process for the treatment and disposal of spent ion exchange resin, wherein said resin is first suspended in water substantially for the purpose of transport and thereafter dehydrated, dried, heat treated and mixed with water and liquid additives, whereupon the resulting mixture is poured into a Container is added, in which a binder and solid additives are added and mixed, whereupon said mixture of binder, dried and heat-treated resin and water is left alone
  • corundum disk mill By means of the corundum disk mill mentioned in the prior art, a fine grinding of the ion exchange resins in the suspension takes place by means of two corundum disks. These corundum disks are hard, brittle and usually have a porous structure.
  • the high porosity of the corundum discs causes a strong contamination of the discs with finely ground ion exchange resin, since the fine powder penetrates deep into the pores. This contamination is very difficult to remove. Since ion exchanger resins can have a high dose rate, this contamination poses an extreme hazard for the personnel.
  • the brittle properties of the corundum disk have the disadvantage that the discs break easily can and then an immediate replacement is required. Since such an exchange can only be done manually, a dose burden of the staff involved is inevitable.
  • the ion exchange resin is passed after passing through the corundum mill in a separate tank. This first comminution step with the corundum mill is necessary to make the ion exchange resin suspension pumpable and to allow a recirculation loop. Spherical, uncomminuted ion exchanger resins would sediment rapidly. In the circulation operation, the ion exchange resins are then further comminuted.
  • This circulation operation also has the disadvantage that it can lead to a mixing of already ground and unground ball resins, or there is a mixing of material which has already passed the mill several times, with that which has passed the corundum mill only in the first grinding step.
  • This mixing requires a long circulation operation to achieve the desired particle size distribution or to ensure that each grain has passed the mill at least once.
  • the said solution requires the use of two tanks, which on the one hand, the contaminated surface but also the space required is adversely affected.
  • limited space is a known limitation in nuclear installations.
  • an object of the invention to provide an improved comminution device for ion exchange resins, which is as compact as possible, in which as few components are contaminated and in which the lowest possible radiation exposure for the operating or maintenance personnel is given.
  • the object of the invention is also to provide a corresponding method.
  • the core idea of the invention is to divide the grinding process into two different grinding steps, which are carried out by two different grinding units.
  • a first milling step is provided, namely a pre-shredding operation in order to make the ion exchange resin suspension pumpable.
  • a second grinding step the actual grinding process then takes place to a fine-grained powder.
  • the inventive arrangement of the first grinding unit - the pre-crushing device - directly in the tank is advantageously allows the IonenSerharzsuspension can be pumped already made in the tank After a corresponding crushing process in a tank ion exchange resin suspension contained therein IonenSerharzparfiikel so far pre-crushed that the ion exchange resin suspension by means of the pumping device to the second grinding unit - the grinding device - can be supplied. Due to the pre-comminution of the ion-exchange resin particles that has already taken place, a single pass through the grinding device is sufficient to achieve the desired grinding result or the desired particle size distribution.
  • the inventive modular division of the crushing task in pre-crushing and grinding can thus account for a second tank advantageously. As a result, both the contaminated surface and the space requirement of the comminution device are advantageously minimized.
  • the pre-shredding in the tank eliminates the circulation operation with the mill and the associated uncertainties with regard to particle size distribution and sedimentation tendency.
  • the division of the comminution into two steps, pre-shredding and grinding ensures that each particle passes through the selection device just once.
  • the division of the comminution of the ion exchange resins on two grinding units allows flexible adaptation of the existing components of the comminution device to the respective comminution task. If no selection device is required to achieve the respective process objective, for example a minimization of the tendency to float, then only the pre-shredding device integrated into the tank can be used and the grinding device can be bypassed by a corresponding bypass.
  • the pre-comminution device is a disperser.
  • Dispersers operate on the rotor-stator principle, are suitable for the production of emulsions and suspensions and can be structurally particularly easy to integrate into the tank.
  • the rotor / stator ring used has a spacing of ⁇ 1 mm and is integrated in the tank.
  • a colloid mill is comminuted according to the rotor-stator principle. Between the toothed surfaces of the rotor and stator disks, thin-bodied to highly viscous products are comminuted, dispersed or homogenized in a narrow gap. The narrow gap and the high speed result in a high shear rate, which is responsible for the comminution effect.
  • a colloid mill suitable according to the invention is preferably characterized by the fact that the rotor or stator are conical. In the upper area are ideally provided fields and trains and in the lower area a rough grinding surface. Such a configuration leads to a particularly good grinding result for the ion exchange resins to be ground. Suitable materials for the grinding surface are, for example, metal carbides or ceramics.
  • the colloid mill has a rotor / stator ring with an adjustable gap spacing.
  • the shear rate can thus be adjusted continuously via the grinding gap and the properties of the milled ion exchange resin are thus influenced in an advantageous manner according to the respective process objective.
  • the adjustment of the desired particle size distribution at the outlet of the colloid mill takes place over the duration of the premilling in the tank, a corresponding adjustment of the grinding gap of the colloid mill, the solids content of the product, but also via the product pressure before the colloid mill which can be adjusted via the pump.
  • the stirring device in the tank is designed as an anchor agitator.
  • Anchor stirrers are particularly suitable for keeping a volume of a suspension in a storage tank in constant motion and thus preventing sedimentation.
  • the ion exchange resin grinding device has a dewatering device for adjusting the water content of the aqueous ion exchange resin suspension.
  • a dewatering device for adjusting the water content of the aqueous ion exchange resin suspension.
  • this optionally has a different water content.
  • the ion exchange resin grinder is designed so that a fixed water content is adjustable. In order to achieve this water content, the ion exchange resin suspension is first dehydrated and then added a defined amount of water again. Therefore, in the case where the ion exchange resin suspension has too low a water content, a water supply device is provided.
  • a drainage device has, for example, a suction pipe opening at the bottom of the tank with a filter.
  • the ion exchange resins can not pass this filter.
  • the water is drained during dewatering by means of a pump via the suction pipe and the associated filter and filled in a transport water tank.
  • a subsequent adjustment of the water content via metered return of the water in the tank. If the ion exchange resins contain too much water, the excess water is returned to the power plant system. Furthermore, it is possible to adjust the water content via water nozzles in the tank.
  • the grinding device is arranged below the tank.
  • the tank is designed for example as a stationary hollow cylinder with a funnel-like narrowing in its bottom area outlet opening. When the tank is raised, the grinder can be positioned under the tank to save space.
  • a tank according to the invention comprises, for example, a volume in the range from 500 l to 2000 l and at the start of the process according to the invention is to be filled with the desired amount of an ion exchanger resin suspension to be comminuted, preferably with an ion exchange resin suspension having a defined water / solids content.
  • This is followed by the pre-shredding process, which, depending on the process target, for example, takes 60 minutes. can take.
  • the ion exchange resin suspension is pumped through an outlet in the lower part of the tank and fed to the grinding device.
  • the optionally adjustable pressure which the associated pump builds up against the grinding device can optionally be used specifically to influence the grinding result.
  • the ion exchange resin suspension or the resin particles contained therein are completely comminuted.
  • the water content of the aqueous ion exchange resin suspension is adjusted before the pre-comminution by the pre-comminuting device.
  • a constant water content has an advantageous effect on the grinding result or the particle size distribution as well as the process stability.
  • the ground aqueous ion exchange resin suspension is subsequently dried. Then it is better to perform a final disposal, for example by high pressure compression.
  • a final disposal for example by high pressure compression.
  • FIG. 1 shows an exemplary ion exchange resin shredder 10 in a schematic view.
  • a tank 12 is filled with a IonenSerharzsus-pension 14, wherein the level level is indicated by line with the reference numeral 32.
  • the tank 12 is made of stainless steel and has a filling volume of, for example 800L or significantly more. In its upper part, it is designed as a hollow cylinder and tapers in its bottom area funnel-like to an outlet opening. But there are also embodiments without such a narrowing possible.
  • an inlet 30 for an ion exchange resin suspension is provided, which can be closed by a shut-off valve 28.
  • a plurality of inlet valves may be provided, so that the final suspension is formed only in the tank 12.
  • a stirring device 16 Centrally protrudes from above a stirring device 16 in the tank 12, which is driven by an external drive 18.
  • the stirring device 16 keeps the suspension 14 in a continuous motion by a rotary movement and prevents sedimentation of ion exchange resin particles.
  • a pre-shredding device 24 is integrated therein, in this case a disperser. Integrated in the context of this invention means that at least the components of the disperser, which must be in contact with the ion exchange resin suspension 14 for dispersion purposes, project at least partially into the tank. A complete arrangement of all components of the pre-shredding device 24 within the tank 12 is not required.
  • a shut-off valve 26 connected to the outlet of the tank is opened and the pre-shredded ion exchange resin suspension 14 is pumped in the direction of arrow 34 from a pumping device 22 to a grinder 20. Because of the successful pre-comminution, the ion exchange resin suspension 14 has become pumpable in the first place.
  • the grinding device 20 is in this case designed as a colloid mill and comminutes the pre-shredded resin particles of the ion exchange resin suspension 14 into a fine powder depending on the boundary parameters such as, for example, grinding gap or pump pressure. Via a drain 36, the milled ion exchange resin suspension 14 is then fed to its further use.
  • a bypass to the grinding device proceed, for example, if according to the respective process specifications a pre-crushing of the resin particles of the ion exchange resin suspension 14 evades.
  • a filter 38 and a suction pipe 40 of a dewatering device is further shown, by means of which the ion exchange resin suspension 14 located in the tank 12 can be dehydrated.
  • the uncut ion exchange resin particles are approximately spherical and can not pass through the filter 38.
  • a suction by means of a pump 42 thus water from the ion exchange resin suspension is pumped into a transport water tank 44 until the Is dewatered ion exchange resin suspension. Subsequently, the tank 12 is again fed via a return 46 so much water until the desired water content is reached.

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  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Disintegrating Or Milling (AREA)
  • Crushing And Grinding (AREA)
  • Crushing And Pulverization Processes (AREA)
EP13759434.7A 2012-06-28 2013-06-28 Ionenaustauscherharz-zerkleinerungsvorrichtung und ionenaustauscherharz-zerkleinerungsverfahren Active EP2867902B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012012828A DE102012012828A1 (de) 2012-06-28 2012-06-28 lonenaustauscherharzzerkleinerungsvorrichtung und lonenaustauscherharzzerkleinerungsverfahren
PCT/EP2013/001902 WO2014000890A1 (de) 2012-06-28 2013-06-28 Ionenaustauscherbarzzerkleinerungsvorrichtung und ionenaustauscherharzzerkleinerungsverfahren

Publications (2)

Publication Number Publication Date
EP2867902A1 EP2867902A1 (de) 2015-05-06
EP2867902B1 true EP2867902B1 (de) 2016-04-20

Family

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EP13759434.7A Active EP2867902B1 (de) 2012-06-28 2013-06-28 Ionenaustauscherharz-zerkleinerungsvorrichtung und ionenaustauscherharz-zerkleinerungsverfahren

Country Status (7)

Country Link
EP (1) EP2867902B1 (enExample)
JP (1) JP6157612B2 (enExample)
CN (1) CN104428842B (enExample)
CA (1) CA2872705A1 (enExample)
DE (1) DE102012012828A1 (enExample)
ES (1) ES2579089T3 (enExample)
WO (1) WO2014000890A1 (enExample)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202013100812U1 (de) * 2013-02-25 2014-06-02 Andritz Kmpt Gmbh Mischer-Trockner
CN104502577B (zh) * 2015-01-04 2016-08-24 上海核工程研究设计院 一种树脂转运工艺的试验台架及其试验方法
DE102015102261A1 (de) * 2015-02-18 2016-08-18 Netzsch Feinmahltechnik Gmbh Mischvorrichtung und Verfahren zum Zerkleinern von groben Bestandteilen beim Ausleiten eines Produktgemisches aus einer Mischvorrichtung
CN108447582B (zh) * 2018-02-05 2021-06-29 中北大学 一种核电站用具有放射性的废弃阴阳离子交换树脂的悬浮方法
CN110385171A (zh) * 2018-04-23 2019-10-29 昆山强迪粉碎设备有限公司 胶体磨搅拌罐出料装置
CN109821424A (zh) * 2019-03-27 2019-05-31 苏州交创石墨烯新材料有限公司 多孔离子交换膜的制备工艺及装置
DE102021004501A1 (de) 2021-09-04 2023-03-09 Westinghouse Electric Germany Gmbh lonentauscherharzbehandlungssystem und Verfahren dazu
CN119951387B (zh) * 2025-02-17 2025-10-24 广东工业大学 一种新型固态电池的制造设备及制造方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE548484A (enExample) * 1956-04-05
JPS5475000A (en) * 1977-11-28 1979-06-15 Hitachi Ltd Method of treating radioactive waste
WO1994009904A1 (en) * 1992-11-04 1994-05-11 Abb Atom Ab Method and device for treatment and disposal of spent ion-exchange resin
JP3939381B2 (ja) * 1996-05-14 2007-07-04 株式会社中村自工 熱可塑性樹脂の再生装置並びに再生された樹脂の使用方法
DE19701929A1 (de) * 1997-01-21 1998-07-23 Siemens Ag Vorrichtung zur Aufbereitung von Ionenaustauscherharz
DE10153430B4 (de) * 2001-10-30 2006-04-20 Kwade, Arno, Dr. Vorrichtung und Verfahren zum Zerkleinern und Dispergieren in einer Flüssigkeit suspendierter Partikel, zur Ermittlung der Zerkleinerungs- und Dispergiereigenschaften der Partikel und zur Bestimmung rheologischer Eigenschaften der Suspension
CN201769291U (zh) * 2010-09-02 2011-03-23 宁波安力电子材料有限公司 酚醛树脂混合粉碎装置
CN202071241U (zh) * 2011-04-26 2011-12-14 江苏苏青水处理工程集团有限公司 一种树脂粉碎装置

Also Published As

Publication number Publication date
CN104428842A (zh) 2015-03-18
WO2014000890A1 (de) 2014-01-03
DE102012012828A1 (de) 2012-12-20
CN104428842B (zh) 2016-12-28
JP6157612B2 (ja) 2017-07-05
CA2872705A1 (en) 2014-01-03
JP2015529540A (ja) 2015-10-08
EP2867902A1 (de) 2015-05-06
ES2579089T3 (es) 2016-08-04

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