CN203777894U - Novel low-temperature activated carbon adsorption device for treating radioactive noble gas - Google Patents
Novel low-temperature activated carbon adsorption device for treating radioactive noble gas Download PDFInfo
- Publication number
- CN203777894U CN203777894U CN201420048595.3U CN201420048595U CN203777894U CN 203777894 U CN203777894 U CN 203777894U CN 201420048595 U CN201420048595 U CN 201420048595U CN 203777894 U CN203777894 U CN 203777894U
- Authority
- CN
- China
- Prior art keywords
- liquid nitrogen
- activated carbon
- nitrogen tank
- inert gas
- low temperature
- 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
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 89
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 9
- 230000002285 radioactive effect Effects 0.000 title claims abstract description 6
- 229910052756 noble gas Inorganic materials 0.000 title abstract 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 124
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 62
- 239000007788 liquid Substances 0.000 claims abstract description 56
- 239000001307 helium Substances 0.000 claims abstract description 17
- 229910052734 helium Inorganic materials 0.000 claims abstract description 17
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000011261 inert gas Substances 0.000 claims description 19
- 239000004744 fabric Substances 0.000 claims description 15
- 229910052799 carbon Inorganic materials 0.000 claims description 14
- 239000003610 charcoal Substances 0.000 claims description 13
- 239000002250 absorbent Substances 0.000 claims description 11
- 230000002745 absorbent Effects 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 5
- 150000001398 aluminium Chemical class 0.000 claims description 4
- 239000005030 aluminium foil Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 239000011148 porous material Substances 0.000 abstract 2
- OKTJSMMVPCPJKN-OUBTZVSYSA-N Carbon-13 Chemical compound [13C] OKTJSMMVPCPJKN-OUBTZVSYSA-N 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000004992 fission Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910052743 krypton Inorganic materials 0.000 description 1
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
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- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The utility model provides a novel low-temperature activated carbon adsorption device for treating radioactive noble gas. The device comprises a liquid nitrogen tank, and an activated carbon bed arranged in the liquid nitrogen tank, wherein the activated carbon bed is hoisted and pulled on an upper seal head of the liquid nitrogen tank through a hoisting rod; the upper seal end of the liquid nitrogen tank is connected with the liquid nitrogen tank through a liquid nitrogen tank flange cover; an upper supporting pore plate and a lower supporting pore plate are arranged at the inner upper part and the inner lower part of the activated carbon bed, respectively; a spiral pipe peripherally surrounds an activated carbon bed barrel body of the activated carbon bed; a helium inlet pipe that extends from the outside of the upper seal head of the liquid nitrogen tank is communicated with the top part of the spiral pipe; the bottom part of the spiral pipe is communicated with the bottom part of the activated carbon bed; a Pi-shaped bend is additionally arranged to a helium outlet pipe on the top part of the activated carbon bed. The novel low-temperature activated carbon adsorption device for treating radioactive noble gas overcomes the problem of expanding with heat and contracting with cold of a pipeline under low temperature, and has the advantages of being small in flowing resistance, great in absorption effect, convenient to maintain, and compact in structure.
Description
Technical field
The utility model relates to the processing technology field of radioactivity inert gas, is specifically related to a kind of new type low temperature absorbent charcoal adsorber of processing radioactivity inert gas.
Background technology
HTGR be taking graphite as moderator, helium is the reactor of cooling agent, is that one has that inherent safety, generating efficiency are high, purposes advanced nuclear reactor very widely.At the normal operation period of nuclear power station, due to the inner nuclear fission of reactor, will produce radioactivity inert gas (being mainly krypton and xenon).The adsorption method that radioactivity inert gas adopts normal temperature or approaches normal temperature is difficult to collect.For reduce the discharge of radioactivity inert gas as far as possible, must carry out absorptive collection to it, reduce the radiological hazard to environment.
Summary of the invention
In order to solve above-mentioned problems of the prior art, the purpose of this utility model is to provide a kind of new type low temperature absorbent charcoal adsorber of processing radioactivity inert gas, the problem that while having solved low temperature, pipeline expands with heat and contract with cold, has that flow resistance is little, advantages of good adsorption effect, is convenient to the advantages such as maintenance, compact conformation.
For achieving the above object, the utility model adopts following technical scheme:
A kind of new type low temperature absorbent charcoal adsorber of processing radioactivity inert gas, comprise liquid nitrogen tank 8 and be placed in its inner activated carbon beds 16, described activated carbon beds 16 is hung and is pulled on liquid nitrogen tank upper cover 4 by hanging pole 7, liquid nitrogen tank upper cover 4 adopts liquid nitrogen tank blind flange 6 to be connected with liquid nitrogen tank 8, upper and lower in activated carbon beds 16 is respectively arranged with supports orifice plate 18 and lower support orifice plate 14, activated carbon beds cylindrical shell 12 peripheral rings in activated carbon beds 16 are wound with helix tube 17, the helium inlet tube 3 stretching into from liquid nitrogen tank upper cover 4 is connected with the top of helix tube 17, helix tube 17 bottoms are connected with the bottom of activated carbon beds 16, on the helium outlet 2 at activated carbon beds 16 tops, increase π shape curved.
Active carbon 13 in described activated carbon beds 16 adopts stacked bed configuration.
Between described liquid nitrogen tank upper cover 4 and liquid nitrogen tank blind flange 6, be filled with filled insulation 5.
Above described lower support orifice plate 14, be provided with three layers of screen cloth that order number increases successively, be also provided with three layers of screen cloth that order number increases successively below supporting orifice plate 18 on described.
Between the liquid nitrogen tank shell 9 of described liquid nitrogen tank 8 and liquid nitrogen tank inner casing 11, be provided with the vacuum insulation filler 10 that adopts wrapping laminated aluminium foil reflection layer structure.
Described device except can Adsorption of Radioactive inert gas, can also adsorb oxygen, nitrogen, carbon monoxide and methane.
Compared to the prior art, tool has the following advantages the utility model;
1, the utility model activated carbon beds 16 is hung and is pulled on liquid nitrogen tank upper cover 4 by hanging pole 7, and liquid nitrogen tank upper cover 4 adopts liquid nitrogen tank blind flange 6 to be connected with bolt with liquid nitrogen tank 8, and this structure is convenient to maintenance.When maintenance, unclamp the nut between 6 and 8, directly the active-carbon bed liquid nitrogen tank that hangs out can be keeped in repair.
2, be wound with helix tube 17 at activated carbon beds cylindrical shell 12 peripheral rings of activated carbon beds 16, make helium enter active-carbon bed before, be cooled sufficiently to-196 degree, thereby ensured good adsorption effect.
3, on the helium outlet 2 at activated carbon beds 16 tops, increase π shape curved, solved the problem that low temperature expands with heat and contract with cold.
4, the active carbon in activated carbon beds 16 adopt stacked bed configuration, generally adopt cocoanut active charcoal, active-carbon bed design airspeed be 2.2h～, can make impurity fully be adsorbed and be cleaned compared with low air speed, and equipment flow resistance is little.
5, between liquid nitrogen tank upper cover 4 and liquid nitrogen tank blind flange 6, be filled with filled insulation 5, reduced loss of refrigeration capacity, improved economy.
6, because the active carbon of filling in active-carbon bed 16 is irregularly shaped particles, size is generally 10～16 orders.In order to prevent that activated carbon granule from leaking lower support orifice plate 14, stop up helium pipeline, above lower support orifice plate 14, increase screen cloth, in addition because the active carbon weight of piling up is large, in order to ensure that screen cloth has certain intensity, adopt three layers of mesh structure, the order number of screen cloth increases successively.This design had both prevented that active carbon from spilling, and had ensured again the intensity of screen cloth.Below the upper support orifice plate 18 on active-carbon bed top, also correspondence has increased screen cloth, and object is to prevent that helium from taking away active carbon dust, and pollutes.
7, the vacuum insulation filler 10 in liquid nitrogen tank 8 adopts wrapping laminated aluminium foil reflection layer structure, relatively traditional pearlife filler, and this method can make equipment volume little, compact conformation, economy is high.
8, the utility model device except can Adsorption of Radioactive inert gas, can also adsorb oxygen, other impurity such as nitrogen, carbon monoxide and methane.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the enlarged drawing at A place in Fig. 1.
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
As shown in Figure 1, a kind of new type low temperature absorbent charcoal adsorber of processing radioactivity inert gas of the utility model, comprise liquid nitrogen tank 8 and be placed in its inner activated carbon beds 16, described liquid nitrogen tank 8 bottoms are provided with liquid nitrogen inlet tube 15, top is provided with nitrogen discharge pipe 1, described activated carbon beds 16 is hung and is pulled on liquid nitrogen tank upper cover 4 by hanging pole 7, liquid nitrogen tank upper cover 4 adopts liquid nitrogen tank blind flange 6 to be connected with liquid nitrogen tank 8, upper and lower in activated carbon beds 16 is respectively arranged with supports orifice plate 18 and lower support orifice plate 14, activated carbon beds cylindrical shell 12 peripheral rings in activated carbon beds 16 are wound with helix tube 17, the helium inlet tube 3 stretching into from liquid nitrogen tank upper cover 4 is connected with the top of helix tube 17, helix tube 17 bottoms are connected with the bottom of activated carbon beds 16, on the helium outlet 2 at activated carbon beds 16 tops, there is a section an of projection, there is a π shape curved.
As preferred embodiment of the present utility model, the active carbon 13 in described activated carbon beds 16 adopts stacked bed configuration.
As preferred embodiment of the present utility model, between described liquid nitrogen tank upper cover 4 and liquid nitrogen tank blind flange 6, be filled with filled insulation 5.
As preferred embodiment of the present utility model, between the liquid nitrogen tank shell 9 of described liquid nitrogen tank 8 and liquid nitrogen tank inner casing 11, be provided with the vacuum insulation filler 10 that adopts wrapping laminated aluminium foil reflection layer structure.
As shown in Figure 2, as preferred embodiment of the present utility model, above described lower support orifice plate 14, be provided with three layers of screen cloth that order number increases successively, be also provided with three layers of screen cloth that order number increases successively below supporting orifice plate 13 on described.The ground floor screen cloth 19, second layer screen cloth 20 and the 3rd layer of screen cloth 21 that increase successively as being disposed with order number in figure above lower support orifice plate 14.
Operation principle of the present utility model is: while normally operation, fill liquid nitrogen by liquid nitrogen tank 8 bottom liquid nitrogen inlet pipes 15 to liquid nitrogen tank 8, whole active-carbon bed 16 will be immersed in liquid nitrogen.Helium enters from the helium inlet tube 3 on device top, first, by being looped around active carbon 13 helix tube 17 around, is cooled to-196 degree, then enters active-carbon bed from the bottom of activated carbon beds 16.After the lower support orifice plate 14 and three layers of screen cloth of its bottom, enter active-carbon bedly 16, radioactivity inert gas is by charcoal absorption.Helium flows out from top helium outlet 2.In running, due to heat exchange, the nitrogen that liquid nitrogen vaporization produces, discharges through the nitrogen discharge pipe 1 on device top.
Claims (6)
1. process the new type low temperature absorbent charcoal adsorber of radioactivity inert gas for one kind, comprise liquid nitrogen tank (8) and be placed in its inner activated carbon beds (16), it is characterized in that: described activated carbon beds (16) is hung and is pulled on liquid nitrogen tank upper cover (4) by hanging pole (7), liquid nitrogen tank upper cover (4) adopts liquid nitrogen tank blind flange (6) to be connected with liquid nitrogen tank (8), upper and lower in activated carbon beds (16) is respectively arranged with upper support orifice plate (18) and lower support orifice plate (14), activated carbon beds cylindrical shell (12) peripheral ring in activated carbon beds (16) is wound with helix tube (17), the helium inlet tube (3) stretching into from liquid nitrogen tank upper cover (4) is connected with the top of helix tube (17), helix tube (17) bottom is connected with the bottom of activated carbon beds (16), curved the upper increase of helium outlet (2) π at activated carbon beds (16) top shape.
2. a kind of new type low temperature absorbent charcoal adsorber of processing radioactivity inert gas according to claim 1, is characterized in that: the active carbon (13) in described activated carbon beds (16) adopts stacked bed configuration.
3. a kind of new type low temperature absorbent charcoal adsorber of processing radioactivity inert gas according to claim 1, is characterized in that: between described liquid nitrogen tank upper cover (4) and liquid nitrogen tank blind flange (6), be filled with filled insulation (5).
4. a kind of new type low temperature absorbent charcoal adsorber of processing radioactivity inert gas according to claim 1, it is characterized in that: be provided with three layers of screen cloth that order number increases successively in the top of described lower support orifice plate (14), support orifice plate (18) below on described and be also provided with three layers of screen cloth that order number increases successively.
5. a kind of new type low temperature absorbent charcoal adsorber of processing radioactivity inert gas according to claim 1, is characterized in that: between the liquid nitrogen tank shell (9) of described liquid nitrogen tank (8) and liquid nitrogen tank inner casing (11), be provided with the vacuum insulation filler (10) that adopts wrapping laminated aluminium foil reflection layer structure.
6. a kind of new type low temperature absorbent charcoal adsorber of processing radioactivity inert gas according to claim 1, is characterized in that: described device except can Adsorption of Radioactive inert gas, can also adsorb oxygen, nitrogen, carbon monoxide and methane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420048595.3U CN203777894U (en) | 2014-01-24 | 2014-01-24 | Novel low-temperature activated carbon adsorption device for treating radioactive noble gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420048595.3U CN203777894U (en) | 2014-01-24 | 2014-01-24 | Novel low-temperature activated carbon adsorption device for treating radioactive noble gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203777894U true CN203777894U (en) | 2014-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420048595.3U Expired - Lifetime CN203777894U (en) | 2014-01-24 | 2014-01-24 | Novel low-temperature activated carbon adsorption device for treating radioactive noble gas |
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| CN (1) | CN203777894U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103845986A (en) * | 2014-01-24 | 2014-06-11 | 清华大学 | Low temperature activated carbon adsorption device for processing radioactive inert gas |
| CN108899104A (en) * | 2018-07-26 | 2018-11-27 | 中国核动力研究设计院 | One kind is used to prepare85The device and method of Kr standard source |
| CN110097979A (en) * | 2018-01-31 | 2019-08-06 | 中国辐射防护研究院 | A kind of graphite dust capturing device for pebble bed high temperature reactor |
| CN114950063A (en) * | 2022-05-30 | 2022-08-30 | 中国工程物理研究院核物理与化学研究所 | Low-temperature adsorption bed and using method thereof |
-
2014
- 2014-01-24 CN CN201420048595.3U patent/CN203777894U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103845986A (en) * | 2014-01-24 | 2014-06-11 | 清华大学 | Low temperature activated carbon adsorption device for processing radioactive inert gas |
| CN110097979A (en) * | 2018-01-31 | 2019-08-06 | 中国辐射防护研究院 | A kind of graphite dust capturing device for pebble bed high temperature reactor |
| CN110097979B (en) * | 2018-01-31 | 2022-11-18 | 中国辐射防护研究院 | Graphite dust collecting device for ball bed high-temperature gas cooled reactor |
| CN108899104A (en) * | 2018-07-26 | 2018-11-27 | 中国核动力研究设计院 | One kind is used to prepare85The device and method of Kr standard source |
| CN114950063A (en) * | 2022-05-30 | 2022-08-30 | 中国工程物理研究院核物理与化学研究所 | Low-temperature adsorption bed and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210111 Address after: 100193 building 26, Zhongguancun Software Park, 8 Dongbeiwang West Road, Haidian District, Beijing Patentee after: CHINERGY Co.,Ltd. Address before: 100084, Haidian District, 100084 mailbox, 82 boxes, Tsinghua University patent office, Beijing Patentee before: TSINGHUA University |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140820 |
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| CX01 | Expiry of patent term |