CN113140345B - Integrated Po removal and oxygen control device and Po removal method - Google Patents
Integrated Po removal and oxygen control device and Po removal method Download PDFInfo
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- CN113140345B CN113140345B CN202110308666.3A CN202110308666A CN113140345B CN 113140345 B CN113140345 B CN 113140345B CN 202110308666 A CN202110308666 A CN 202110308666A CN 113140345 B CN113140345 B CN 113140345B
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 239000001301 oxygen Substances 0.000 title claims abstract description 74
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 24
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000007789 gas Substances 0.000 claims abstract description 55
- 239000001257 hydrogen Substances 0.000 claims abstract description 52
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 52
- 238000002347 injection Methods 0.000 claims abstract description 36
- 239000007924 injection Substances 0.000 claims abstract description 36
- 239000002826 coolant Substances 0.000 claims abstract description 33
- 238000005192 partition Methods 0.000 claims abstract description 22
- 229910052797 bismuth Inorganic materials 0.000 claims description 47
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 44
- 239000007788 liquid Substances 0.000 claims description 27
- 229910001220 stainless steel Inorganic materials 0.000 claims description 26
- 239000010935 stainless steel Substances 0.000 claims description 26
- 230000008569 process Effects 0.000 claims description 12
- 238000005247 gettering Methods 0.000 claims description 10
- 229910000464 lead oxide Inorganic materials 0.000 claims description 10
- 239000008188 pellet Substances 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
- 239000013589 supplement Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000005452 bending Methods 0.000 claims 2
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 claims 2
- 230000010354 integration Effects 0.000 abstract description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 230000001174 ascending effect Effects 0.000 description 10
- HTUMBQDCCIXGCV-UHFFFAOYSA-N lead oxide Chemical compound [O-2].[Pb+2] HTUMBQDCCIXGCV-UHFFFAOYSA-N 0.000 description 8
- 230000008901 benefit Effects 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
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
- G21F9/04—Treating liquids
- G21F9/06—Processing
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention belongs to the technical field of coolant technology and safety in the lead-based reactor field, and in particular relates to an integrated Po removal and oxygen control methodApparatus and method for removing Po. The device comprises: a container with an open upper end; a cover plate covering the opening of the container; the cylindrical shell is arranged below the cover plate, and an intermediate baffle is arranged in the middle of the lower part of the shell; the air outlet pipeline is fixed on the cover plate, the lower end of the air outlet pipeline is communicated with the inside of the shell, and the upper end of the air outlet pipeline is sequentially communicated with the H-absorbing pipeline 2 A Po gas unit; the lower end of the hydrogen injection pipeline is sequentially penetrated through the cover plate and the bottom plate of the shell and extends into one side of the middle partition plate, and the upper end of the hydrogen injection pipeline is communicated with a hydrogen source; an oxygen control device is fixed in the shell. According to the technical scheme, the integration of Po removal and oxygen control is realized through the double-channel design.
Description
Technical Field
The invention belongs to the technical field of coolant technology and safety in the field of lead-based reactors, and particularly relates to an integrated device and a method for removing Po.
Background
In lead-based reactors, the removal of Po and oxygen control are separate functions.
In terms of Po removal, the American society for technology and technology (MIT) uses H 2 The Po gas separation method is used for removing the Po in the liquid lead bismuth, hydrogen is injected into a container containing the liquid Pbi and the PbPo, the other container is used for cooling gas, and finally the container is led to a catcher, but the problem that the oxygen concentration in the lead bismuth fluid is drastically reduced due to the hydrogen injection is not considered, and further the corrosion of components in the reactor is aggravated is caused. The national laboratory of INEEL in the United states establishes a molten salt method to remove Po experimental device, and molten NaOH is adopted to react with PbPo to remove Po, but new impurity NaOH and the like are introduced into the coolant containing Po lead bismuth to influence the later operation of the reactor. In the aspect of oxygen control, the gas-phase oxygen control and oxygen control device is widely applied internationally, oxygen control is realized mainly by injecting oxygen and matching solid-phase ceramics with an oxygen sensor, and the oxygen control device comprises Germany, italy, japan, china and the like, and technical application is realized on experimental platforms such as lead-bismuth experimental loop platforms, material corrosion platforms and the like.
In summary, the design for removing Po in the current lead-based reactor field is complex, occupies the reactor volume, and has not considered the problem of oxygen control and the problem of impurities caused by the coolant containing Po. Therefore, an integrated device with dual functions of removing Po and controlling oxygen does not exist at present.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides an integrated Po removal and oxygen control device and a Po removal method.
The technical scheme provided by the invention is as follows:
an integrated Po and oxygen removal device comprising:
a container with an open upper end;
a cover plate covering the opening of the container;
the cylindrical shell is arranged below the cover plate, an opening of the shell is downwards arranged, a bottom plate of the shell is fixedly connected with the cover plate, and a middle partition plate is arranged in the middle of the lower part of the shell;
the lower end of the air outlet pipeline sequentially penetrates through the cover plate and the bottom plate of the shell and is connected with the shell in an internal mode, and the upper end of the air outlet pipeline is sequentially communicated with a suction H 2 A Po gas unit;
the lower end of the hydrogen injection pipeline is sequentially penetrated through the cover plate and the bottom plate of the shell and extends into one side of the middle partition plate, and the upper end of the hydrogen injection pipeline is communicated with a hydrogen source;
and the oxygen control device is fixed in the shell and is positioned on the other side of the middle partition board.
Based on the integrated device for removing Po and controlling oxygen provided by the technical scheme, the ascending channel and the descending channel of the coolant containing Po lead bismuth are respectively formed on two sides of the middle partition plate. The ascending channel is provided with a hydrogen injection pipeline, so that Po can be removed, and power for upward flow of lead and bismuth can be provided. The upward flow power of the lead bismuth ensures the downward flow of the lead bismuth in the descending channel. Further, an oxygen control device is arranged on the descending channel, so that the problem that oxygen is consumed by hydrogen in the Po removal process can be effectively solved. According to the technical scheme, the integration of Po removal and oxygen control is realized through the double-channel design.
Further, the oxygen control apparatus includes: the stainless steel cylinder is fixed in the shell, two ends of the stainless steel cylinder are sealed, the stainless steel cylinder is vertically arranged, the upper bottom of the stainless steel cylinder is communicated with a liquid inlet pipe, the inside of the stainless steel cylinder is filled with lead oxide pellets, the lower bottom of the stainless steel cylinder is communicated with a liquid outlet pipe, the caliber of the liquid outlet pipe is smaller than the particle size of the lead oxide pellets, and the upper end height of the liquid inlet pipe is lower than the upper edge height of the middle partition plate.
Based on the technical scheme, oxygen supplementing of the coolant containing the Po lead bismuth can be realized through mass exchange of lead oxide. And the lead oxide is limited in the stainless steel cylinder and cannot fall into the coolant containing Po lead bismuth.
Further, the side wall of the liquid inlet pipe is also provided with a side liquid inlet which is lower than the upper edge of the middle partition plate.
Based on the technical scheme, the side liquid inlet is convenient for the coolant containing Po lead bismuth from the ascending channel to smoothly flow into the stainless steel cylinder.
Further, the stainless steel cylinder is fixed in the shell through a plurality of fixed connecting pieces.
Based on the technical scheme, the stainless steel cylinder can be conveniently fixed.
Further, the lower end of the middle partition plate extends out of the shell, bends towards one side far away from the oxygen control device and horizontally extends out, and correspondingly, the lower end of the side wall of the shell far away from the oxygen control device bends towards one side far away from the oxygen control device and horizontally extends, a horizontal hydrogen inlet channel is formed between two extending parts, and the lower end of the hydrogen injection pipeline extends into the hydrogen inlet channel.
Based on the technical scheme, the coolant containing Po lead bismuth entering in the ascending channel is conveniently realized to be a part without removing Po.
Further, the sucking H 2 The Po gas device comprises a cooler, a gas compressor and an alkaline filter which are sequentially communicated, and the cooler is communicated with the gas outlet pipeline.
Based on the technical scheme, the H can be absorbed stably 2 Po. And, the rate of removing Po can be adjusted by controlling the hydrogen injection rate of the hydrogen injection pipe and the rate of the gas compressor. The NaOH alkaline filter is replaced regularly, so that the maintenance is convenient.
Specifically, the cover plate may be provided with a gas injection hole of the cap for injecting the shielding gas.
The invention also provides a method for removing Po, which is carried out by adopting the integrated device for removing Po and controlling oxygen and comprises the following steps:
1) Injecting a coolant containing Po lead bismuth into the container until the liquid level is higher than the upper edge of the middle partition plate, and covering the liquid level of the coolant containing Po lead bismuth with protective gas;
2) Opening a hydrogen source, injecting hydrogen into the Po-containing lead bismuth coolant in the container through the hydrogen injection pipeline, and reacting in the container to generate H 2 A Po gas;
3) Starting the gettering H 2 Po gas apparatus, aspirate and remove H 2 A Po gas;
4) Gettering H 2 In the process of the Po gas, the cooling agent containing the Po lead bismuth on one side of the oxygen control device flows downwards, and in the flowing process, the oxygen control device supplements oxygen for the cooling agent containing the Po lead bismuth.
Based on the technical scheme, the integrated Po removal and oxygen control device provided by the invention can effectively remove Po under the condition of oxygen control.
If the cover plate is provided with the gas injection hole, the protective gas can be injected through the gas injection hole, and the cover plate is sealed by a plug after the injection is finished. If the cover plate is not provided with the gas injection hole, a certain gap is reserved after the cover plate is covered, and the protective gas is injected through the gas injection hole of the gap, and the cover is covered after the injection. The lead bismuth coolant may be subjected to the Po removal treatment after 3 to 6 months of use.
Further, adjusting the hydrogen injection rate of the hydrogen gas source to adjust the generation of H 2 The rate of Po gas.
Based on the technical scheme, H can be conveniently realized 2 Adjustment of the rate of Po gas generation.
Further, the gettering H is adjusted 2 The rate of the removal of Po is adjusted by the rate of the removal of Po by the Po gas apparatus.
Based on the technical scheme, the speed adjustment for removing Po can be conveniently realized.
The time for each run was 1 to 2 days.
Compared with the prior art, the invention has the advantages that:
1) The structure is compact. Through the space design of design binary channels, set up the hydrogen injection pipeline at the passageway that rises, can remove Po again can provide plumbous bismuth power that upwards flows, set up oxygen controlling means at the passageway that descends, solve the problem that removes Po in-process oxygen by hydrogen consumption, do not additionally occupy a lot of spaces, have integrated compact advantage.
2) The reliability is high. Hydrogen is directly injected into the coolant containing Po lead bismuth of the local channel, H is generated by chemical reaction 2 Po gas, H 2 Po gas floats to the narrow space at the upper part and H is pumped by a compressor 2 Po gas is flushed into H 2 In a Po alkaline filter, H is removed by chemical reaction 2 Po, the removal of Po in lead bismuth is realized, and the reliability of the system is improved to the maximum extent.
3) The economy is good. Through the integrated compact design, the miniaturized design of removing Po and oxygen control has been realized simultaneously, removes Po system simple structure, small and exquisite, part is few, has the advantage that economic nature is good.
In conclusion, the invention has the advantages of non-activity, high reliability, microminiature and high economical efficiency.
Drawings
Fig. 1 is a schematic structural diagram of an integrated Po and oxygen removal device according to the present invention.
In fig. 1, the structures represented by the reference numerals are listed below:
1. the device comprises a container, 2 parts of a Po-containing lead bismuth coolant, 3 parts of an intermediate baffle plate, 4 parts of a shell, 5 parts of an oxygen control device, 6 parts of a protective gas, 7 parts of an alkaline filter, 8 parts of a gas compressor, 9 parts of a cooler, 10 parts of an air outlet pipeline, 11 parts of a hydrogen injection pipeline, 12 parts of a stainless steel cylinder, 13 parts of a side liquid inlet.
Detailed Description
The principles and features of the present invention are described below with examples only to illustrate the present invention and not to limit the scope of the present invention.
It is noted that when an element or component is referred to as being "connected," "positioned," "assembled" to another element or component, it can be directly on the other element or component or intervening elements and components may also be present. The terms "left", "right", "upper", "lower" and the like are used herein for illustrative purposes only.
In one embodiment, as shown in fig. 1, the integrated Po and oxygen removal device comprises: a container 1 with an open upper end; a cover plate covering the opening of the container 1; the cylindrical shell 4 is arranged below the cover plate, an opening of the shell 4 is downwards arranged, a bottom plate of the shell 4 is fixedly connected with the cover plate, and a middle partition plate 3 is arranged in the middle of the lower part of the shell 4; the air outlet pipeline 10 is fixed on the cover plate, the lower end of the air outlet pipeline 10 sequentially penetrates through the cover plate and the bottom plate of the shell 4 and is communicated with the inside of the shell 4, and the upper end of the air outlet pipeline 10 is sequentially communicated with the suction H 2 A Po gas unit; the lower end of the hydrogen injection pipeline 11 fixed on the cover plate sequentially penetrates through the cover plate and the bottom plate of the shell 4 and stretches into one side of the middle partition plate 3, and the upper end of the hydrogen injection pipeline is communicated with a hydrogen source; an oxygen control device 5 fixed in the housing 4 and located on the other side of the intermediate partition 3. Based on the integrated device for removing Po and controlling oxygen provided by the technical scheme, a rising channel and a falling channel of the coolant 2 containing Po lead bismuth are respectively formed on two sides of the middle partition plate. The ascending channel is provided with a hydrogen injection pipeline, so that Po can be removed, and power for upward flow of lead and bismuth can be provided. The upward flow power of the lead bismuth ensures the downward flow of the lead bismuth in the descending channel. Further, an oxygen control device is arranged on the descending channel, so that the problem that oxygen is consumed by hydrogen in the Po removal process can be effectively solved. According to the technical scheme, the integration of Po removal and oxygen control is realized through the double-channel design.
In one embodiment, as shown in fig. 1, the oxygen control apparatus 5 includes: the stainless steel cylinder 12 with two closed ends is fixed in the shell 4, the stainless steel cylinder 12 is vertically arranged, the upper bottom of the stainless steel cylinder is communicated with a liquid inlet pipe, the inside of the stainless steel cylinder is filled with lead oxide pellets, the lower bottom of the stainless steel cylinder is communicated with a liquid outlet pipe, the caliber of the liquid outlet pipe is smaller than the particle size of the lead oxide pellets, and the upper end of the liquid inlet pipe is lower than the upper edge of the middle partition plate 3. Based on the technical scheme, oxygen supplementing of the Po-containing lead bismuth coolant 2 can be realized through mass exchange of lead oxide. And the lead oxide is confined in the stainless steel cylinder and does not fall into the Po-containing lead bismuth coolant 2.
In one embodiment, as shown in fig. 1, the side wall of the inlet pipe is further provided with a side inlet 13, which is lower than the upper edge of the intermediate partition. Based on the technical proposal, the side liquid inlet is convenient for the Po-containing lead bismuth coolant 2 coming from the ascending channel to smoothly flow into the stainless steel cylinder.
In one embodiment, as shown in fig. 1, the stainless steel cylinder 12 is secured within the housing 4 by a number of securing connections. Based on the technical scheme, the stainless steel cylinder can be conveniently fixed.
In one embodiment, as shown in fig. 1, the lower end of the middle partition plate 3 extends out of the casing 4 and extends to a side far away from the oxygen control device 5, and correspondingly, the lower end of the side wall of the casing 4 far away from the oxygen control device 5 extends to a side far away from the oxygen control device 5, and a channel communicating with the opening of the lower end of the hydrogen injection pipeline 11 is formed between the two extending positions. Based on the technical scheme, the lead bismuth coolant 2 containing Po entering in the ascending channel is conveniently realized to be a part without Po removal.
In one embodiment, as shown in FIG. 1, the gettering H 2 The Po gas device comprises a cooler 9, a gas compressor 8 and an alkaline filter 7 which are sequentially communicated, wherein the cooler 9 is communicated with the gas outlet pipeline 10. Based on the technical scheme, the H can be sucked and removed stably 2 Po. And, the rate of removing Po can be adjusted by controlling the hydrogen injection rate of the hydrogen injection pipe and the rate of the gas compressor. The NaOH alkaline filter is replaced regularly, so that the maintenance is convenient.
In one embodiment, the method for removing Po is performed by using the integrated Po removing and oxygen controlling apparatus as shown in fig. 1, and includes the following steps:
1) Injecting a coolant 2 containing Po lead bismuth into the container 1 until the liquid level is higher than the upper edge of the middle partition plate 3, and covering the liquid level of the coolant 2 containing Po lead bismuth with a protective gas 6;
2) Opening hydrogenA gas source for injecting hydrogen into the Po-containing lead bismuth coolant 2 in the container 1 through the hydrogen injection pipeline 11, and generating H by reaction in the container 1 2 A Po gas;
3) Starting the gettering H 2 Po gas apparatus, aspirate and remove H 2 A Po gas;
4) Gettering H 2 In the process of the Po gas, the coolant 2 containing the Po lead bismuth on one side of the oxygen control device 5 flows downwards, and in the flowing process, the oxygen control device 5 supplements oxygen for the coolant 2 containing the Po lead bismuth. Based on the technical scheme, the integrated Po removal and oxygen control device provided by the invention can effectively remove Po under the condition of oxygen control.
In one embodiment, the hydrogen injection rate of the hydrogen gas source is adjusted to adjust the production of H 2 The rate of Po gas. Based on the technical proposal, H can be conveniently realized 2 Adjustment of the rate of Po gas generation.
In one embodiment, the gettering H is adjusted 2 The rate of the removal of Po is adjusted by the rate of the removal of Po by the Po gas apparatus. Based on the technical scheme, the speed adjustment for removing Po can be conveniently realized.
In the working process of the integrated Po and oxygen removal device provided by the invention, the hydrogen injection pipeline is arranged in the ascending channel, the inlet of the hydrogen injection pipeline is lower than the inlet of the double channels, so that hydrogen is ensured not to enter the main covering gas in the top cover through entering the inlet of the hydrogen injection pipeline, and the problem of subsequent argon covering gas hydrogen removal is solved. The hydrogen can remove Po and provide a driving force for the lead bismuth in the ascending channel to flow upwards, so that the lead bismuth flows into the descending channel under the action of the driving force and then flows out of the descending channel to enter the lead bismuth pool, and part of the lead bismuth reenters the ascending channel under the action of the hydrogen to complete the natural circulation process of the lead bismuth. In addition, an oxygen control device is arranged in the descending channel, the oxygen control device can solve the problem that oxygen is consumed by hydrogen in the Po removal process, and can supplement oxygen in real time in the lead-bismuth natural circulation process, so that the lead-bismuth oxygen concentration in a loop system is controlled, oxide impurities of the loop are reduced, and the lead-bismuth impurities are prevented from blocking a circulating path of a loop coolant.
The above is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way; those skilled in the art can smoothly practice the invention as shown in the drawings and described above; however, those skilled in the art will appreciate that many modifications, adaptations, and variations of the present invention are possible in light of the above teachings without departing from the scope of the invention; meanwhile, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the present invention still fall within the scope of the present invention.
Claims (7)
1. An integrated Po and oxygen removal apparatus comprising:
a container (1) with an open upper end;
a cover plate covering the opening of the container (1);
the cylindrical shell (4) is arranged below the cover plate, an opening of the shell (4) is downwards arranged, an upper end plate of the shell (4) is fixedly connected with the cover plate, and a middle partition plate (3) is vertically arranged in the middle of the lower part of the shell (4);
the air outlet pipeline (10) is fixed on the cover plate, the lower end of the air outlet pipeline (10) sequentially penetrates through the cover plate and the upper end plate of the shell (4) and is communicated with the inside of the shell (4), and the upper end of the air outlet pipeline (10) is communicated with the suction H 2 A Po gas unit;
the lower end of the hydrogen injection pipeline (11) is sequentially penetrated through the cover plate and the bottom plate of the shell (4) and extends into one side of the middle partition plate (3), and the upper end of the hydrogen injection pipeline is used for communicating a hydrogen source;
an oxygen control device (5) fixed in the shell (4) and positioned on the other side of the middle partition board (3);
the oxygen control device (5) comprises a stainless steel cylinder (12) which is fixed in the shell (4) and is sealed, the stainless steel cylinder (12) is vertically arranged, the upper end of the stainless steel cylinder is communicated with a liquid inlet pipe, the inside of the stainless steel cylinder is filled with lead oxide pellets, the lower end plate of the stainless steel cylinder is communicated with a liquid outlet pipe, the pipe diameter of the liquid outlet pipe is smaller than the grain diameter of the lead oxide pellets, and the height of the upper end of the liquid inlet pipe is lower than the height of the upper edge of the middle partition plate (3);
the suction H 2 The Po gas device comprises a cooler (9), a gas compressor (8) and an alkaline filter (7) which are sequentially communicated, wherein the cooler (9) is communicated with the gas outlet pipeline (10).
2. The integrated Po and oxygen control apparatus of claim 1 wherein: the side wall of the liquid inlet pipe is also provided with a liquid inlet (13).
3. The integrated Po and oxygen control apparatus of claim 1 wherein: the stainless steel cylinder (12) is fixed in the shell (4) through a plurality of fixed connecting pieces.
4. A device for integrated Po removal and oxygen control according to any one of claims 1 to 3, wherein: the lower extreme of intermediate baffle (3) stretches out the lower extreme opening of casing (4) to keeping away from one side bending and horizontal extension of oxygen accuse device (5), correspondingly, the lower extreme of the lateral wall that casing (4) kept away from oxygen accuse device (5) is to keeping away from one side bending and horizontal extension of oxygen accuse device (5), has formed horizontal hydrogen entering passageway between two extension positions, the lower extreme of hydrogen injection pipe (11) stretches into in the hydrogen entering passageway.
5. A method of removing Po, characterized by using the integrated Po removal and oxygen control apparatus according to any one of claims 1 to 4, comprising the steps of:
1) injecting a coolant (2) containing Po lead bismuth into the container (1) until the liquid level is higher than the upper edge of the middle partition plate (3), and then covering the liquid level of the coolant (2) containing Po lead bismuth with a protective gas (6);
2) Opening a hydrogen source, continuously injecting hydrogen into the Po-containing lead bismuth coolant (2) in the container (1) through the hydrogen injection pipeline (11), and reacting in the container (1) to generate H 2 A Po gas;
3) Starting the gettering H 2 Po gas apparatus, continuous aspiration and removal of H 2 A Po gas;
4) Gettering H 2 In the process of the Po gas, the coolant (2) containing the Po lead bismuth at one side of the oxygen control device (5) flows downwards, and in the flowing process, the oxygen control device (5) supplements oxygen for the coolant (2) containing the Po lead bismuth.
6. The method of removing Po of claim 5 wherein: adjusting the hydrogen injection rate of the hydrogen gas source to adjust H production 2 The rate of Po gas.
7. The method of removing Po of claim 5 wherein: adjusting the gettering H 2 The rate of the removal of Po is adjusted by the rate of the removal of Po by the Po gas apparatus.
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| CN113140345B true CN113140345B (en) | 2023-11-03 |
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| JP2001108793A (en) * | 1999-10-13 | 2001-04-20 | Mitsubishi Heavy Ind Ltd | Purifying method and purifying device for lead-bismuth eutectic alloy |
| KR20040028871A (en) * | 2004-02-05 | 2004-04-03 | 김철영 | A gas purifier apparatus with various function |
| CN107610788A (en) * | 2017-09-28 | 2018-01-19 | 岭东核电有限公司 | Solid oxygen control device |
| CN109300565A (en) * | 2018-10-20 | 2019-02-01 | 中广核研究院有限公司 | Radioactive substance removes system and method in a kind of coolant |
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- 2021-03-23 CN CN202110308666.3A patent/CN113140345B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001108793A (en) * | 1999-10-13 | 2001-04-20 | Mitsubishi Heavy Ind Ltd | Purifying method and purifying device for lead-bismuth eutectic alloy |
| KR20040028871A (en) * | 2004-02-05 | 2004-04-03 | 김철영 | A gas purifier apparatus with various function |
| CN107610788A (en) * | 2017-09-28 | 2018-01-19 | 岭东核电有限公司 | Solid oxygen control device |
| CN109300565A (en) * | 2018-10-20 | 2019-02-01 | 中广核研究院有限公司 | Radioactive substance removes system and method in a kind of coolant |
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