CN113130102A - High-temperature protection device for hydrogen recombiner - Google Patents
High-temperature protection device for hydrogen recombiner Download PDFInfo
- Publication number
- CN113130102A CN113130102A CN202110382866.3A CN202110382866A CN113130102A CN 113130102 A CN113130102 A CN 113130102A CN 202110382866 A CN202110382866 A CN 202110382866A CN 113130102 A CN113130102 A CN 113130102A
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- China
- Prior art keywords
- hydrogen
- temperature protection
- temperature
- catalytic
- recombiner
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 239000001257 hydrogen Substances 0.000 title claims abstract description 58
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 58
- 230000003197 catalytic effect Effects 0.000 claims abstract description 55
- 239000001301 oxygen Substances 0.000 claims abstract description 13
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000002485 combustion reaction Methods 0.000 claims abstract description 7
- 239000012782 phase change material Substances 0.000 claims abstract description 6
- 238000004200 deflagration Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 238000005474 detonation Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000004880 explosion Methods 0.000 description 2
- 238000005215 recombination Methods 0.000 description 2
- 230000006798 recombination Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910001093 Zr alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 238000003541 multi-stage reaction Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000941 radioactive substance Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C9/00—Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices
- G21C9/04—Means for suppressing fires ; Earthquake protection
- G21C9/06—Means for preventing accumulation of explosives gases, e.g. recombiners
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C9/00—Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices
- G21C9/001—Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices against explosions, e.g. blast shields
-
- 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
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
Abstract
The invention provides a high-temperature protection device for a hydrogen recombiner, which comprises a series of catalytic units and high-temperature protection units. The catalytic unit and the high-temperature protection unit form a hydrogen recombiner catalytic device body in a combined form. The operating temperature of the high-temperature protection unit is lower than the hydrogen detonation temperature. The high-temperature protection unit is formed by one or more phase-change materials. The high-temperature protection unit can perform high-temperature protection on the catalytic area in the recombiner, and the temperature of the catalytic area can be lower than the critical temperature of combustion of hydrogen and oxygen. The invention can maintain the temperature of the catalytic area by absorbing the heat released by the reaction of hydrogen and oxygen by the high-temperature protection unit, thereby avoiding the risk of hydrogen combustion caused by overhigh temperature on the catalytic surface of the recombiner.
Description
Technical Field
The invention belongs to the field of dehydrogenation devices in the nuclear energy industry sector, and particularly relates to a high-temperature protection device for a hydrogen recombiner.
Background
In the process of serious accidents of a pressurized water reactor nuclear power plant, zirconium alloy cladding of part of fuel of a reactor core reacts with water vapor at high temperature, and molten materials of the reactor core react with concrete to generate a large amount of hydrogen. During transportation of hydrogen in the containment, the hydrogen is mixed with air and steam in the containment to form combustible mixed gas in the space of the containment. Under certain conditions, temperature and pressure loads can be formed in the container after the mixed gas is combusted, and the integrity of the containment vessel can be endangered once the mixed gas containing hydrogen is detonated or even exploded, so that the radioactive substances can be leaked out seriously. For this risk, the use of a hydrogen catalytic recombiner to consume hydrogen by catalyzing the hydrogen-oxygen reaction at a passive metal surface is an effective countermeasure.
When the mixed gas of hydrogen and oxygen enters the hydrogen catalytic recombiner, the heat release of the hydrogen and oxygen composite reaction can cause the temperature of the catalytic region of the recombiner to be higher than the critical temperature of hydrogen deflagration, and the hydrogen is combusted or even exploded, thereby causing the failure of the hydrogen recombiner and the integrity of the crisis containment vessel. However, existing hydrogen recombiners do not take this potential risk into account and do not have a dedicated safety facility for this purpose.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a high-temperature protection method for a hydrogen recombiner. The catalytic unit and the high-temperature protection unit are combined to form a hydrogen recombiner catalytic device body. The catalytic area of the hydrogen catalytic recombiner is protected at high temperature by adopting a phase-change heat absorption mode, so that the normal operation of the hydrogen recombiner is ensured.
The purpose of the invention is realized as follows:
the invention provides a high-temperature protection device of a hydrogen recombiner, which is characterized by comprising a series of catalytic units and high-temperature protection units.
Preferably, the catalytic unit and the high temperature protection unit both constitute a hydrogen recombiner catalytic device body in a combined form. Preferably, the operating temperature of the high temperature protection unit is lower than the hydrogen deflagration temperature.
Preferably, the high temperature protection unit is formed of one or more phase change materials.
Preferably, when the operating temperature of the high-temperature protection unit is lower than the hydrogen explosion temperature, the phase-change material with the high operating temperature is selected as much as possible to improve the catalytic activity of the catalyst and improve the hydrogen elimination efficiency.
Preferably, the high-temperature protection unit can perform high-temperature protection on the catalytic region in the recombiner, and the temperature of the catalytic region can be lower than the critical temperature of combustion of hydrogen and oxygen.
The protection principle of the high-temperature protection unit is as follows: under a serious accident, hydrogen leaks to the containment vessel, the hydrogen-oxygen recombiner is put into operation, and the high-temperature protection unit in the recombiner can carry out high-temperature protection on the catalytic region in the recombiner, so that the temperature of the catalytic region can be lower than the critical temperature of combustion of the hydrogen and the oxygen.
Compared with the prior art, the invention has the beneficial effects that:
the catalytic unit and the high-temperature protection unit are combined to form the catalytic device body of the hydrogen recombiner. The catalytic area of the hydrogen catalytic recombiner is protected at high temperature by adopting a phase-change heat absorption mode, so that the normal operation of the hydrogen recombiner is ensured. The temperature of the catalytic area can be maintained by absorbing the heat released by the reaction of the hydrogen and the oxygen by the high-temperature protection unit, so that the risk of hydrogen combustion caused by overhigh temperature on the catalytic surface of the recombiner is avoided.
Drawings
FIG. 1 is a high temperature protection device of a hydrogen recombiner of a disclosed non-limiting embodiment;
FIG. 2 is a high temperature protection of another disclosed non-limiting embodiment of a hydrogen recombiner;
FIG. 3 is another disclosed non-limiting embodiment high temperature protection method of a hydrogen recombiner;
FIG. 4 is a combination of a catalytic unit and a high temperature protection unit of one disclosed non-limiting embodiment.
Wherein, 1-gas outlet; 2-a compounder housing; 3-a gas inlet; 4-a catalytic unit; 5-high temperature protection unit.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example 1, this example provides a high temperature protection method for a hydrogen recombiner, as shown in fig. 1, comprising a recombiner housing 2, a series of catalytic units 4 and high temperature protection units 5, the catalytic units and the high temperature protection units being made in a plate shape. Although 4 high temperature protection units are shown, it should be appreciated that any number may benefit therefrom. The high temperature protection units 5 are uniformly distributed in the region where the catalytic unit 4 is formed.
The high-temperature protection unit 5 in the recombiner can absorb the reaction heat released by the hydrogen-oxygen recombination reaction, and due to the special physical properties of the phase-change material in the high-temperature protection unit 5, the phase-change material can continuously absorb the reaction heat of the hydrogen-oxygen recombination reaction after reaching the phase-change temperature, and the temperature is unchanged in the phase-change process, so that the working temperature of the catalytic region can be kept lower than the hydrogen explosion critical temperature. So that hydrogen deflagration is effectively avoided.
In addition, the high temperature protection units described may be used in various geometries and orientations, either alone or in combination. In another disclosed non-limiting embodiment, the high temperature protection units are spherical and are distributed in the spherical catalytic unit area (fig. 2). In another disclosed non-limiting embodiment, the high temperature protection units are made in the shape of rods and are distributed in the area of the rod-shaped catalytic unit (fig. 3). It should also be appreciated that various other arrangements and combinations will benefit herefrom.
In addition, the high-temperature protection unit and the catalytic unit can also form a unified structural whole. The high-temperature protection unit is filled in the catalytic unit (as shown in figure 4) to achieve the effect of high-temperature protection. The catalytic unit and the high temperature protection unit may be combined to form a plate-shaped structure, a spherical structure, a rod-shaped structure, etc., as shown in fig. 4. It should also be appreciated that various other arrangements and combinations will benefit herefrom.
In summary, the hydrogen recombiner catalytic device body is formed by combining the catalytic unit and the high-temperature protection unit. The catalytic area of the hydrogen catalytic recombiner is protected at high temperature by adopting a phase-change heat absorption mode, so that the normal operation of the hydrogen recombiner is ensured. The temperature of the catalytic area can be maintained by absorbing the heat released by the reaction of the hydrogen and the oxygen by the high-temperature protection unit, so that the risk of hydrogen combustion caused by overhigh temperature on the catalytic surface of the recombiner is avoided.
The invention discloses a high-temperature protection design of a hydrogen recombiner, which comprises a series of catalytic units and high-temperature protection units, wherein the catalytic units and the high-temperature protection units form a catalytic device body of the hydrogen recombiner in a combined form. The invention adopts a phase-change heat absorption mode to carry out high-temperature protection on the catalytic area of the hydrogen catalytic recombiner, thereby ensuring the normal operation of the hydrogen recombiner
Although various non-limiting embodiments have components specifically illustrated, embodiments of the present invention are not limited to these specific combinations. It is possible to use some features or combinations of features from any of the embodiments in any non-limiting embodiment with features or features from any of the embodiments in other non-limiting embodiments.
It should be appreciated that like reference numerals designate corresponding or similar elements throughout the several views shown. It should also be appreciated that while a particular component arrangement is disclosed in the illustrated embodiment, other arrangements will benefit herefrom.
While particular step sequences are shown, described, and claimed, it should be understood that steps may be performed in any order, separated or combined unless otherwise indicated and will benefit from the present disclosure.
It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
Claims (5)
1. A high-temperature protection device of a hydrogen recombiner is characterized by comprising a series of catalytic units and high-temperature protection units.
2. A high-temperature protection device according to claim 1, wherein both the catalytic unit and the high-temperature protection unit constitute a hydrogen recombiner catalytic device body in combination.
3. A high temperature protection arrangement according to claim 1, characterized in that the operating temperature of the high temperature protection unit is lower than the hydrogen deflagration temperature.
4. A high temperature protection device according to claim 3, wherein the high temperature protection unit is formed of one or several phase change materials.
5. The high-temperature protection device as claimed in claim 1, wherein the high-temperature protection unit can protect the catalytic region in the recombiner at a high temperature, and the temperature of the catalytic region can be lower than the critical temperature of combustion of hydrogen and oxygen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110382866.3A CN113130102A (en) | 2021-04-09 | 2021-04-09 | High-temperature protection device for hydrogen recombiner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110382866.3A CN113130102A (en) | 2021-04-09 | 2021-04-09 | High-temperature protection device for hydrogen recombiner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113130102A true CN113130102A (en) | 2021-07-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110382866.3A Pending CN113130102A (en) | 2021-04-09 | 2021-04-09 | High-temperature protection device for hydrogen recombiner |
Country Status (1)
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|---|---|
| CN (1) | CN113130102A (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4228132A (en) * | 1973-08-10 | 1980-10-14 | Westinghouse Electric Corp. | Hydrogen-oxygen recombiner |
| DE19636557A1 (en) * | 1996-09-09 | 1998-03-12 | Siemens Ag | Catalyst system and recombination device for the recombination of hydrogen and oxygen, in particular for a nuclear power plant |
| CN1250215A (en) * | 1998-07-23 | 2000-04-12 | 东芝株式会社 | Combustible degasing device |
| WO2000060608A1 (en) * | 1999-03-31 | 2000-10-12 | Framatome Anp Gmbh | Recombination device and method for catalytically recombining hydrogen and/or carbon monoxide with oxygen in a gaseous mixture |
| CN201811936U (en) * | 2010-03-18 | 2011-04-27 | 中国船舶重工集团公司第七一八研究所 | Self-starting hydrogen concentration measuring device for nuclear power station |
| CN102671675A (en) * | 2012-06-05 | 2012-09-19 | 四川材料与工艺研究所 | Preparation method of catalytic board based on passive hydrogen recombiner of nuclear power plant |
| WO2014018127A1 (en) * | 2012-07-24 | 2014-01-30 | Aerojet Rocketdyne Of De, Inc. | Hydrogen recombiner |
| CN105225704A (en) * | 2015-10-28 | 2016-01-06 | 中国工程物理研究院材料研究所 | Non-active hydrogen recombiner with wind-powered electricity generation translation function and uses thereof |
| CN106328220A (en) * | 2016-10-20 | 2017-01-11 | 上海核工程研究设计院 | Passive hydrogen and carbon monoxide eliminating device |
| CN106328219A (en) * | 2016-10-20 | 2017-01-11 | 中国船舶重工集团公司第七八研究所 | Passive hydrogen eliminating device |
| CN206262360U (en) * | 2016-10-20 | 2017-06-20 | 中国船舶重工集团公司第七一八研究所 | A kind of boxlike catalyst unit |
| CN110383393A (en) * | 2017-01-11 | 2019-10-25 | 法马通股份有限公司 | Catalytic recombiner and filter device |
| KR20200092046A (en) * | 2019-01-24 | 2020-08-03 | 한국원자력연구원 | Catalyst for hydrogen removal and passive autocatalytic hydrogen recombiner having the same |
| CN112151198A (en) * | 2020-09-21 | 2020-12-29 | 中广核研究院有限公司 | Combustible gas control method and system |
| CN112271003A (en) * | 2020-10-13 | 2021-01-26 | 中广核工程有限公司 | Passive hydrogen elimination device and system for nuclear power plant |
-
2021
- 2021-04-09 CN CN202110382866.3A patent/CN113130102A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4228132A (en) * | 1973-08-10 | 1980-10-14 | Westinghouse Electric Corp. | Hydrogen-oxygen recombiner |
| DE19636557A1 (en) * | 1996-09-09 | 1998-03-12 | Siemens Ag | Catalyst system and recombination device for the recombination of hydrogen and oxygen, in particular for a nuclear power plant |
| CN1250215A (en) * | 1998-07-23 | 2000-04-12 | 东芝株式会社 | Combustible degasing device |
| WO2000060608A1 (en) * | 1999-03-31 | 2000-10-12 | Framatome Anp Gmbh | Recombination device and method for catalytically recombining hydrogen and/or carbon monoxide with oxygen in a gaseous mixture |
| CN201811936U (en) * | 2010-03-18 | 2011-04-27 | 中国船舶重工集团公司第七一八研究所 | Self-starting hydrogen concentration measuring device for nuclear power station |
| CN102671675A (en) * | 2012-06-05 | 2012-09-19 | 四川材料与工艺研究所 | Preparation method of catalytic board based on passive hydrogen recombiner of nuclear power plant |
| WO2014018127A1 (en) * | 2012-07-24 | 2014-01-30 | Aerojet Rocketdyne Of De, Inc. | Hydrogen recombiner |
| CN105225704A (en) * | 2015-10-28 | 2016-01-06 | 中国工程物理研究院材料研究所 | Non-active hydrogen recombiner with wind-powered electricity generation translation function and uses thereof |
| CN106328220A (en) * | 2016-10-20 | 2017-01-11 | 上海核工程研究设计院 | Passive hydrogen and carbon monoxide eliminating device |
| CN106328219A (en) * | 2016-10-20 | 2017-01-11 | 中国船舶重工集团公司第七八研究所 | Passive hydrogen eliminating device |
| CN206262360U (en) * | 2016-10-20 | 2017-06-20 | 中国船舶重工集团公司第七一八研究所 | A kind of boxlike catalyst unit |
| CN110383393A (en) * | 2017-01-11 | 2019-10-25 | 法马通股份有限公司 | Catalytic recombiner and filter device |
| KR20200092046A (en) * | 2019-01-24 | 2020-08-03 | 한국원자력연구원 | Catalyst for hydrogen removal and passive autocatalytic hydrogen recombiner having the same |
| CN112151198A (en) * | 2020-09-21 | 2020-12-29 | 中广核研究院有限公司 | Combustible gas control method and system |
| CN112271003A (en) * | 2020-10-13 | 2021-01-26 | 中广核工程有限公司 | Passive hydrogen elimination device and system for nuclear power plant |
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Application publication date: 20210716 |