CN201126723Y - Cold trap for on-line purification of radiosodium - Google Patents
Cold trap for on-line purification of radiosodium Download PDFInfo
- Publication number
- CN201126723Y CN201126723Y CNU2007203104296U CN200720310429U CN201126723Y CN 201126723 Y CN201126723 Y CN 201126723Y CN U2007203104296 U CNU2007203104296 U CN U2007203104296U CN 200720310429 U CN200720310429 U CN 200720310429U CN 201126723 Y CN201126723 Y CN 201126723Y
- Authority
- CN
- China
- Prior art keywords
- sodium
- cylinder body
- outer cylinder
- trap
- radiosodium
- 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
Links
- 238000000746 purification Methods 0.000 title claims abstract description 24
- 239000011734 sodium Substances 0.000 claims abstract description 76
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 75
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 75
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 230000008676 import Effects 0.000 claims description 19
- 239000002826 coolant Substances 0.000 claims description 18
- 229910003251 Na K Inorganic materials 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 2
- 238000012545 processing Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000002285 radioactive effect Effects 0.000 abstract 1
- 235000015424 sodium Nutrition 0.000 description 63
- 239000012535 impurity Substances 0.000 description 14
- 238000001816 cooling Methods 0.000 description 6
- 238000009833 condensation Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N argon Substances [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 3
- 229910001338 liquidmetal Inorganic materials 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 229910000574 NaK Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- YZCKVEUIGOORGS-NJFSPNSNSA-N Tritium Chemical compound [3H] YZCKVEUIGOORGS-NJFSPNSNSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- NSIKFNOYIGGILA-UHFFFAOYSA-N [Na].[Na].[K] Chemical compound [Na].[Na].[K] NSIKFNOYIGGILA-UHFFFAOYSA-N 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052792 caesium Inorganic materials 0.000 description 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 239000011551 heat transfer agent Substances 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910000104 sodium hydride Inorganic materials 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229910052722 tritium Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model discloses a cold trap for online purification of radioactive sodium, comprising an outer cylinder body whose interior is provided with a metallic wire net and upper portion is provided with an inlet and an outlet for sodium; the interior of the outer cylinder body is provided with a central backflow tube which is communicated with the outlet for sodium via an inner heat saving device coil. The technical proposal provided by the utility model sufficiently utilizes temperature difference between the inlet for sodium and the outlet for sodium to exchange heat, which improves heat utilization rate, and realizes the processes like cooling-precipitation-filtering-heating to high temperature liquid sodium on power fuelling, besides, the utility model has strong processing ability and is suitable for online purification of a large amount of sodium.
Description
Technical field
The utility model belongs to a kind of purification technology field of sodium, is specifically related to the cold-trap that a kind of radiosodium in-line purification is used.
Background technology
In the cold fast breeder of sodium, one, secondary circuit adopts liquid metal sodium as heat transfer agent, adopt that inert gas---argon gas is as the blanket gas of sodium metal.Though sodium metal has good heat transfer character; adding does not need pressure boost to prevent boiling; therefore; worldwide running fast reactor; mostly selected liquid metal sodium as cooling medium, but sodium have very active chemical property as alkali-metal a member; how radiosodium is carried out in-line purification, making it reach reactor safety, to move needed quality be one of main difficult problem of facing of sodium-cooled fast reactor.
Usually, the main source of impurity has following several respects in the reactor coolant sodium:
1. the impurity of from raw material sodium, introducing;
2. the impurity of introducing from equipment metal surface, a loop;
3. overhaul the impurity of introducing;
4. the impurity of introducing is expected in loading and unloading;
5. blanketing gas leaks and the oxide of tonifying Qi introducing;
6. corrosion product;
From element, leak out impurity such as iodine, caesium, silver, zirconium when 7. from fuel element, oozing out tritium and fuel element failure.
For guaranteeing the safe operation of reactor, must filter, purify cooling medium, this overanxious, cleaning equipment is called cold-trap.The principle that the cold-trap technology is adopted all is to reduce the temperature of Liquid Sodium, and impurity is separated out, and refilters and is purified sodium.For example, Chinese patent 97249431.6 provides a kind of sodium vapour trap, and it comprises cylindrical shell and the back flow plate assembly that is arranged in the cylindrical shell, and the back flow plate assembly is made up of the bowl-shape back flow plate interval overlapping of multilayer, and the bowl-shape back flow plate of each layer uses sleeve spaced apart successively.Big, the path length of the sodium vapour trap unit volume condensation area of this structure, condensation effect is good, and it is little therefore it can be designed to volume, and the device of compact conformation is particularly suitable for the instrument sodium vapour trap.In addition, Chinese patent 200610140531.6 discloses a kind of sodium vapour trap, and it comprises inside and outside sleeve pipe, forms cooled gas path between inside and outside sleeve pipe, comes condensation sodium steam by the method for forced condensation.But the purpose of the disclosed two kinds of sodium vapour traps of above-mentioned document all is for the sodium steam in the condensation argon gas, and therefore, processing power is very limited, is not suitable for being used for the in-line purification of a large amount of liquid metal sodiums.
Summary of the invention
The purpose of this utility model is the limited problem of processing power that purifies the cold-trap of usefulness at sodium in the prior art, provides that a kind of processing power is big, the scope of application is wide, the cold-trap that can use the radiosodium in-line purification.
The technical solution adopted in the utility model is: a kind ofly be used for the cold-trap that the radiosodium in-line purification is used, it comprises outer cylinder body, and the inside of outer cylinder body is provided with wire gauze.Key is that sodium import and sodium outlet all are located at the top of outer cylinder body, in the inside of outer cylinder body the center recirculatory pipe are set, and the center recirculatory pipe communicates with the sodium outlet by interior economizer coil pipe.During work, high-temperature sodium enters outer cylinder body from the sodium import, with the heat exchange of interior economizer coil pipe, low temperature sodium flows through wire gauze, impurity is attracted on the wire gauze, low temperature sodium after the purification is collected in the outer cylinder body bottom, and the economizer coil pipe carries out heat interchange with the high-temperature sodium of outside in entering by the center recirculatory pipe again, and the sodium after the intensification is derived from the sodium outlet.
In order further to increase purification effects, technical scheme provided by the utility model can also be done further optimization, the sleeve that promptly has sinuous coil in the outer setting of outer cylinder body, sleeve internal-filling liquid attitude Na-K alloy is with the cooling cold-trap, and the heat of Na-K alloy is passed to the cooling medium in the sinuous coil that is coiled on the sleeve.
Technical scheme provided by the utility model makes full use of the temperature difference of sodium import and export and carries out heat interchange, improved efficiency of utilization, and then under the prerequisite of not shutdown, the high-temperature liquid state sodium that comes from main cooling system is realized processes such as cooling off-separate out-filter-heat, and processing power is big, is suitable for the in-line purification of a large amount of sodium.
Description of drawings
The structural representation of the cold-trap that Fig. 1 radiosodium in-line purification is used.
Number in the figure, 1 organic coolant import, 2 sodium imports, the outlet of 3 sodium, the outlet of 4 organic coolants, 5 outer cylinder bodies, 6 sodium import coil packs, 7 interior economizer coil pipes, 8 center recirculatory pipes, 9 endoporus cylindrical shells, 10 Na-K alloies, 11 sleeves, 12 sinuous coils, 13 stainless steel cloths, 14 row's sodium holes.
Embodiment
Below in conjunction with accompanying drawing technical scheme provided by the utility model is further elaborated.
With certain sodium-cooled fast reactor is example, and impurity mainly is Na in the need processing sodium
2O, NaH, NaOH, C, Fe, Ni, Cr, Ca, Sr,
54Mn,
60Co,
182Ta,
65Zr,
137Cs,
131I,
110Ag etc.With the quality standard of sodium and the experience of using domestic sodium to move on the test loop, the quality standard of the used sodium of this fast reactor is shown in Table 1 with reference to external sodium-cooled fast reactor.
Certain fast reactor of table 1 sodium quality standard
| Element term | Impurity concentration in the sodium (ppm) |
| C | 30 |
| O | 10 |
| |
5 |
| |
5 |
| Halogen | 30 |
| Ca | 10 |
| K | 200～1000 |
| |
10 |
The used cold-trap of this fast reactor in-line purification radiosodium as shown in Figure 1, it comprises outer cylinder body 5, outer cylinder body 5 tops are provided with organic coolant import 1, sodium import 2, sodium outlet 3, organic coolant outlet 4.Sodium import 2 communicates with the sodium import coil pack 6 that is arranged on outer cylinder body 5 tops, sodium import coil pack 6 is arranged along the inside circumference of outer cylinder body 5, the bottom is provided with a plurality of holes, and economizer coil pipe 7 in flowing through after the high-temperature sodium that flows into from sodium import 2 goes out by these orifice flows cools off.In the inside of outer cylinder body 5 center recirculatory pipe 8 is set, the top of center recirculatory pipe 8 communicates with sodium outlet 2 by interior economizer coil pipe 7, and the bottom that endoporus cylindrical shell 9 extends outer cylinder body 5 is passed in the bottom of center recirculatory pipe 8, receives the low temperature sodium after being cleaned.Endoporus cylindrical shell 9 is placed on the bottom of outer cylinder body 5, and multiple layer metal silk screen 13 is set in it, and present embodiment is employed to be stainless steel cloth.The outer setting of outer cylinder body 5 has the sleeve 11 of sinuous coil 12, sleeve 11 internal-filling liquid attitude Na-K alloies 10 are with the cooling cold-trap, the heat of Na-K alloy 11 is passed to the cooling medium in the sinuous coil 12 that is coiled in the sleeve 11, and the used cooling medium of present embodiment is an Esso 500# liquid.The two ends of sinuous coil 12 communicate with organic coolant import 1, organic coolant outlet 4 respectively.Row's sodium hole is set in the bottom of outer cylinder body 5, assorted with the sodium of regular eliminating outer cylinder body 5 bottoms.
The major equipment parameter sees Table 2.
The major parameter of table 2 equipment
During work, enter outer cylinder body 5 by the 250 ℃ of high-temperature sodiums that come in the reactor from sodium import 2 through not purifying after the economizer cooling, 130 ℃ of sodium heat exchange that purified with interior economizer coil pipe 7, low temperature sodium after temperature drops to about 180 ℃ flows through wire gauze 13, impurity is attracted on the wire gauze 13, low temperature sodium after the purification is collected in the bottom of outer cylinder body 5, economizer coil pipe 7 carries out heat interchange with the high-temperature sodium of outside in entering by center recirculatory pipe 8 again, derives from sodium outlet 3 after temperature is raised to 150 ℃.Simultaneously, react, in sleeve 11, inject Na-K alloy 10 and cool off cold-trap, adopt the Esso 500# liquid that flows through in the sinuous coil 12 that is installed in the sleeve 11 to come cooling sodium potassium-sodium alloy 10 again for preventing sodium fire and sodium and cooling medium.
Through experiment with calculate, the technical scheme that present embodiment provided is at the cold-trap normal operation period, can guarantee that various impurity contents in the loop sodium cooling agent are no more than the limits value of table 3, meet design requirement.Simultaneously, this apparatus structure is simple, and processing and maintenance cost are cheap, renewable use.
Table 2 a loop sodium cooling agent impurity allows content
| The impurity element title | Allow content limit value (ppm) |
| O | 10.0 |
| C | 20.0 |
| N | 10.0 |
| H | 0.5 |
| Cl | 30.0 |
| K | 200.0 |
| Fe | 10.0 |
| Ca | 10.0 |
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (8)
1. cold-trap that the radiosodium in-line purification is used, it comprises outer cylinder body (5), the inside of outer cylinder body (5) is provided with wire gauze (13), it is characterized in that: sodium import (2) and sodium outlet (3) is set on the top of outer cylinder body (5), its inside is provided with center recirculatory pipe (8), and center recirculatory pipe (8) communicates with sodium outlet (3) by interior economizer coil pipe (7).
2. the cold-trap that radiosodium in-line purification according to claim 1 is used, it is characterized in that: described sodium import (2) communicates with the sodium import coil pack (6) that is arranged on outer cylinder body (5) top, sodium import coil pack (6) is arranged bottom opening along the inside circumference of outer cylinder body (5).
3. the cold-trap that radiosodium in-line purification according to claim 1 is used is characterized in that: endoporus cylindrical shell (9) is placed in the bottom at outer cylinder body (5), and multiple layer metal silk screen (13) places in it.
4. the cold-trap of using according to claim 1 or 3 described radiosodium in-line purifications, it is characterized in that: described wire gauze (13) is a stainless steel cloth.
5. the cold-trap that radiosodium in-line purification according to claim 1 is used is characterized in that: have the sleeve (11) of sinuous coil (12), sleeve (11) internal-filling liquid attitude Na-K alloy (10) in the outer setting of outer cylinder body (5).
6. the cold-trap that radiosodium in-line purification according to claim 5 is used is characterized in that: the two ends of described sinuous coil (12) communicate with organic coolant import (1), organic coolant outlet (4) respectively.
7. the cold-trap of using according to claim 5 or 6 described radiosodium in-line purifications is characterized in that: be cooling medium with Esso 500# liquid in the described sinuous coil (12).
8. the cold-trap that radiosodium in-line purification according to claim 1 is used is characterized in that: row sodium hole (14) is set in the bottom of outer cylinder body (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203104296U CN201126723Y (en) | 2007-12-11 | 2007-12-11 | Cold trap for on-line purification of radiosodium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203104296U CN201126723Y (en) | 2007-12-11 | 2007-12-11 | Cold trap for on-line purification of radiosodium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201126723Y true CN201126723Y (en) | 2008-10-01 |
Family
ID=40000190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007203104296U Expired - Lifetime CN201126723Y (en) | 2007-12-11 | 2007-12-11 | Cold trap for on-line purification of radiosodium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201126723Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101231898B (en) * | 2007-12-11 | 2011-07-20 | 中国原子能科学研究院 | Cold trap for radioactive sodium on-line purification |
| CN103093842A (en) * | 2013-01-13 | 2013-05-08 | 中国科学院合肥物质科学研究院 | Cold trap for purifying lead and lead-base alloy |
| CN104036839A (en) * | 2013-03-05 | 2014-09-10 | 中国原子能科学研究院 | Liquid metallic sodium continuous injection method and loop applied to same |
| CN107610787A (en) * | 2017-07-24 | 2018-01-19 | 上海妍杰环境设备有限公司 | Air cooler used in the sodium-cooled fast reactor nuclear power station sodium pump circulatory system |
| CN109859868A (en) * | 2019-01-10 | 2019-06-07 | 中国原子能科学研究院 | A kind of high temperature lithium circuit purification hot trap system |
| CN109971978A (en) * | 2019-03-27 | 2019-07-05 | 西安交通大学 | A kind of sodium loop purification system and purification method |
-
2007
- 2007-12-11 CN CNU2007203104296U patent/CN201126723Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101231898B (en) * | 2007-12-11 | 2011-07-20 | 中国原子能科学研究院 | Cold trap for radioactive sodium on-line purification |
| CN103093842A (en) * | 2013-01-13 | 2013-05-08 | 中国科学院合肥物质科学研究院 | Cold trap for purifying lead and lead-base alloy |
| CN103093842B (en) * | 2013-01-13 | 2015-05-27 | 中国科学院合肥物质科学研究院 | Cold trap for purifying lead and lead-base alloy |
| CN104036839A (en) * | 2013-03-05 | 2014-09-10 | 中国原子能科学研究院 | Liquid metallic sodium continuous injection method and loop applied to same |
| CN104036839B (en) * | 2013-03-05 | 2016-12-28 | 中国原子能科学研究院 | Method that liquid metal sodium sprays continuously and loop used |
| CN107610787A (en) * | 2017-07-24 | 2018-01-19 | 上海妍杰环境设备有限公司 | Air cooler used in the sodium-cooled fast reactor nuclear power station sodium pump circulatory system |
| CN109859868A (en) * | 2019-01-10 | 2019-06-07 | 中国原子能科学研究院 | A kind of high temperature lithium circuit purification hot trap system |
| CN109859868B (en) * | 2019-01-10 | 2024-05-10 | 中国原子能科学研究院 | Hot trap system for purifying high-temperature lithium loop |
| CN109971978A (en) * | 2019-03-27 | 2019-07-05 | 西安交通大学 | A kind of sodium loop purification system and purification method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20081001 Effective date of abandoning: 20071211 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20081001 Effective date of abandoning: 20071211 |