EP0963588A1 - Vorrichtung zur aufbereitung von ionenaustauscherharz - Google Patents
Vorrichtung zur aufbereitung von ionenaustauscherharzInfo
- Publication number
- EP0963588A1 EP0963588A1 EP98905223A EP98905223A EP0963588A1 EP 0963588 A1 EP0963588 A1 EP 0963588A1 EP 98905223 A EP98905223 A EP 98905223A EP 98905223 A EP98905223 A EP 98905223A EP 0963588 A1 EP0963588 A1 EP 0963588A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- exchange resin
- ion exchange
- ion
- mill
- resin
- 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
Links
Classifications
-
- 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
- G21F9/34—Disposal of solid waste
-
- 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
- G21F9/008—Apparatus specially adapted for mixing or disposing radioactively contamined material
Definitions
- the invention relates to a device for processing ion exchange resin from a nuclear plant.
- waste water or condensate flows are usually subjected to cleaning.
- ion exchange resins in bed form e.g. mixed bed filters
- precoat layers e.g., ion exchange resins in the form of precoat layers.
- the ion exchange resins are used in particular to deionize the respective wastewater or condensate flow.
- anionic and / or cationic ion exchange resins can be used.
- the respective ion exchange resin can be in powder form as a powder resin.
- ion exchange resin in the form of small beads (spherical resin) can also be used.
- the ion exchange resins used as cleaning or filter material are disposed of after their use.
- Fine-grained or powdery ion exchange resins can be subjected to a chemical or thermal treatment that reduces their swelling capacity. After such a reduction in the swelling capacity of the respective ion exchange resin, it is possible to incorporate the ion exchange resin in a cement or bitumen matrix without the matrix being destroyed by swelling of the ion exchange resin. In this way, a powdered ion exchange resin is particularly good for final storage.
- a limited reduction in the swelling capacity can be achieved by chemical or thermal treatment.
- ion exchange resins are therefore usually stored temporarily or in a dewatered or dried form or by means of a binder. In the case of such storage, however, undesired swelling and thus damage to the container of the ion exchange resin is possible when water enters.
- the invention is therefore based on the object of specifying a device which enables particularly reliable intermediate or final storage of coarse-grained ion exchange resin or of spherical resin.
- This object is inventively achieved by a device for the preparation of ion exchange resin from a nuclear installations exchange resin for crushing the Ionenaus ⁇ in which a mill is provided.
- the invention is based on the consideration that an integration into a cement or bitumen matrix should be provided for a particularly reliable intermediate or final storage also for coarse-grained ion exchange resin or for spherical resin.
- a suitable reduction in the swelling capacity of the ion exchange resin and the resin ball should be ensured ⁇ .
- the swelling capacity can be reduced by a suitable chemical or thermal treatment analogous to the treatment of a fine-grain ion exchange resin.
- the coarse-grained ion exchange resin or the resin ball in the nature of a pretreatment should first zer ⁇ be downsized.
- a suitable comminution device should be provided for this.
- a disk mill is expediently provided in particular, which has a fixed stator disk as grinding elements and a rotor disk rotating relative to it.
- the crushing of the ion exchange resin can take place in an adjustable gap provided between the stator disk and the rotor disk due to shear and cutting forces.
- the use of a disk mill has proven to be particularly effective in comminuting the ion exchange resin.
- Corundum disks are preferably provided as grinding elements of the disk mill.
- the disk mill is advantageously connected to a circulation circuit of the ion exchange resin.
- a repeated passage of the ion exchange resin through the disk mill is thus possible, in particular through a variation of the gap between the grinding elements of which a greater size reduction can be achieved from one passage to the next.
- the ion exchange resin can be pumped in a suspension and thus can be guided in a circulating circuit, although coarse-grained ion exchange resin or spherical resin usually sediments.
- the advantages achieved by the invention are, in particular, that the use of a disk mill in the preparation of an ion exchange resin from a nuclear plant makes it possible to comminute the ion exchange resin with particularly simple means.
- the comminution can be carried out, in particular after several passes of the ion exchange resin through the disk mill, up to a grain size of the ion exchange resin of less than 200 ⁇ m.
- the swelling power of one such treated ion exchange resin is mixed by means of a ther ⁇ or chemical treatment can be reduced.
- Ion exchange resin prepared in this way in the form of a sphere can thus be supplied to a particularly suitable intermediate or final storage, for example by incorporation into a cement or bitumen matrix.
- the device 1 is provided for the treatment of ion exchange resin I from a nuclear plant, not shown in detail.
- the device 1 comprises a receiving container 2 provided for receiving the ion exchange resin I.
- the receiving container 2 has an agitator 6 which can be driven by a motor 4.
- On the output side of the receptacle 2 is connected via a shut-off by a valve 8 ⁇ bare conduit 10 with a disk mill 12th
- the disk mill 12 is in turn connected on the output side via a line 14 to a collecting container 16 which has an agitator 20 which can be driven by a motor 18.
- the collecting container 16 is connected to a line 22 which can be shut off by a valve 21 and into which a pump 24 is connected.
- the line 22 is connected in a manner not shown to a device for further treatment of the ion exchange resin I.
- a line section 28, which can be shut off with a valve 26 branches off from the line 22 and is connected to the line 10 provided between the receptacle 2 and the disk mill 12.
- the disk mill 12 is in a through the line 14, the collecting container 16, the line 22, the pump 24, the line section 28 and the line 10 formed circulation circuit 30 switched.
- the disk mill 12 comprises a stator disk as the first grinding element 32 and a rotor disk which can be driven by a motor 36 as the second grinding element 34.
- the grinding elements 32, 34 are designed as corundum disks.
- the ion exchange resin I is supplied to the receiving container 2 via a supply line 38.
- the ion exchange resin I is stirred as a resin / water mixture.
- water W is supplied to the receiving container 2 from a water container 40 via a feed line 42.
- the ion exchange resin I is fed to the disk mill 12 via the line 10.
- the ion exchange resin I is comminuted in a gap 44 between the grinding elements 32, 34 of the disk mill 12 as a result of shear and cutting forces. After comminution, the ion exchange resin I 'arrives in the collecting container 16.
- the comminuted ion exchange resin I ' can be pumped in a suspension and can thus be supplied to the disk mill 12 by means of the pump 24 via the circulation circuit 30 for a new pass.
- the width of the gap 44 By modifying the width of the gap 44, further comminution is possible in a further pass through the disk mill 12.
- the crushing of the ion exchange resin I is continued by repeated passage through the disk mill 12 as long as the particle size of the ion exchange resin I 'falls below a predeterminable size limit of, for example, about 200 ⁇ m. As soon as this occurs, the comminuted ion exchange resin I 'is fed via line 22 for further processing. leads.
- a thermal and / or a chemical treatment for reducing the swelling capacity of the comminuted ion exchange resin I 'can be provided there, for example.
- treatment of the comminuted ion exchange resin I ' is possible analogously to treatment of a fine-grained ion exchange resin.
- the comminuted ion exchange resin I 'can be incorporated into a cement or bitumen matrix.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Environmental & Geological Engineering (AREA)
- Crushing And Grinding (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19701929A DE19701929A1 (de) | 1997-01-21 | 1997-01-21 | Vorrichtung zur Aufbereitung von Ionenaustauscherharz |
DE19701929 | 1997-01-21 | ||
PCT/DE1998/000048 WO1998032136A1 (de) | 1997-01-21 | 1998-01-08 | Vorrichtung zur aufbereitung von ionenaustauscherharz |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0963588A1 true EP0963588A1 (de) | 1999-12-15 |
EP0963588B1 EP0963588B1 (de) | 2005-08-03 |
Family
ID=7817897
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98905223A Expired - Lifetime EP0963588B1 (de) | 1997-01-21 | 1998-01-08 | Vorrichtung zur aufbereitung von ionenaustauscherharz |
Country Status (7)
Country | Link |
---|---|
US (1) | US6422492B1 (de) |
EP (1) | EP0963588B1 (de) |
JP (1) | JP2001509268A (de) |
CN (1) | CN1251200A (de) |
DE (2) | DE19701929A1 (de) |
ES (1) | ES2247677T3 (de) |
WO (1) | WO1998032136A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101477844B (zh) * | 2009-01-07 | 2012-10-31 | 中国广东核电集团有限公司 | 核电站机组大修后启动过程一回路硫酸根污染的控制方法 |
US9192192B1 (en) * | 2012-01-30 | 2015-11-24 | Performance Plus Liquids, Inc. | Method and apparatus for treating low quality forage |
DE102012012828A1 (de) | 2012-06-28 | 2012-12-20 | Westinghouse Electric Germany Gmbh | lonenaustauscherharzzerkleinerungsvorrichtung und lonenaustauscherharzzerkleinerungsverfahren |
DE102021004501A1 (de) * | 2021-09-04 | 2023-03-09 | Westinghouse Electric Germany Gmbh | lonentauscherharzbehandlungssystem und Verfahren dazu |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH592192B5 (de) * | 1975-07-07 | 1977-10-14 | Ciba Geigy Ag | |
JPS5475000A (en) * | 1977-11-28 | 1979-06-15 | Hitachi Ltd | Method of treating radioactive waste |
JPS6012366B2 (ja) * | 1977-12-20 | 1985-04-01 | 関西電力株式会社 | 放射性粒状樹脂の連続微粒化方法 |
JPS5931040B2 (ja) * | 1980-09-12 | 1984-07-30 | 株式会社日立製作所 | 放射性廃棄物の造粒装置 |
US4569787A (en) * | 1982-06-23 | 1986-02-11 | Hitachi, Ltd. | Process and apparatus for treating radioactive waste |
US4752298A (en) * | 1985-11-25 | 1988-06-21 | Ciba-Geigy Corporation | Storage-stable formulations of water-insoluble or sparingly water-soluble dyes with electrolyte-sensitive thickeners: polyacrylic acid |
JPS63214386A (ja) * | 1987-03-03 | 1988-09-07 | Fuji Electric Co Ltd | 廃イオン交換樹脂の処理システム |
DE4137947C2 (de) * | 1991-11-18 | 1996-01-11 | Siemens Ag | Verfahren zur Behandlung von radioaktivem Abfall |
US5564103A (en) * | 1995-01-30 | 1996-10-08 | Westinghouse Electric Corporation | Reducing the volume of depleted ion exchange bead resin |
-
1997
- 1997-01-21 DE DE19701929A patent/DE19701929A1/de not_active Withdrawn
-
1998
- 1998-01-08 EP EP98905223A patent/EP0963588B1/de not_active Expired - Lifetime
- 1998-01-08 JP JP53350598A patent/JP2001509268A/ja active Pending
- 1998-01-08 ES ES98905223T patent/ES2247677T3/es not_active Expired - Lifetime
- 1998-01-08 CN CN98801715A patent/CN1251200A/zh active Pending
- 1998-01-08 WO PCT/DE1998/000048 patent/WO1998032136A1/de active IP Right Grant
- 1998-01-08 DE DE59812977T patent/DE59812977D1/de not_active Expired - Lifetime
-
1999
- 1999-07-21 US US09/358,290 patent/US6422492B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9832136A1 * |
Also Published As
Publication number | Publication date |
---|---|
ES2247677T3 (es) | 2006-03-01 |
CN1251200A (zh) | 2000-04-19 |
DE19701929A1 (de) | 1998-07-23 |
DE59812977D1 (de) | 2005-09-08 |
JP2001509268A (ja) | 2001-07-10 |
US6422492B1 (en) | 2002-07-23 |
EP0963588B1 (de) | 2005-08-03 |
WO1998032136A1 (de) | 1998-07-23 |
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