CN114093531A - Hydrogen composite assembly adopting hollow structure ball bed - Google Patents
Hydrogen composite assembly adopting hollow structure ball bed Download PDFInfo
- Publication number
- CN114093531A CN114093531A CN202111326760.8A CN202111326760A CN114093531A CN 114093531 A CN114093531 A CN 114093531A CN 202111326760 A CN202111326760 A CN 202111326760A CN 114093531 A CN114093531 A CN 114093531A
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- CN
- China
- Prior art keywords
- hydrogen
- hollow structure
- ball bed
- structure ball
- hydrogen composite
- 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.)
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 48
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 48
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 239000002131 composite material Substances 0.000 title claims abstract description 19
- 239000012798 spherical particle Substances 0.000 claims abstract description 8
- 238000005215 recombination Methods 0.000 claims description 2
- 230000006798 recombination Effects 0.000 claims description 2
- 238000001338 self-assembly Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 abstract description 13
- 230000008030 elimination Effects 0.000 abstract description 5
- 238000003379 elimination reaction Methods 0.000 abstract description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 3
- 239000001301 oxygen Substances 0.000 abstract description 3
- 229910052760 oxygen Inorganic materials 0.000 abstract description 3
- 239000003054 catalyst Substances 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 230000003197 catalytic effect Effects 0.000 description 5
- 238000012856 packing Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001093 Zr alloy Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012954 risk control Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- ATYZRBBOXUWECY-UHFFFAOYSA-N zirconium;hydrate Chemical compound O.[Zr] ATYZRBBOXUWECY-UHFFFAOYSA-N 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
-
- 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
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The invention aims to provide a hydrogen recombiner assembly unit adopting a ball bed with a hollow structure. The assembly is formed by stacking spherical particles, and a stable hollow structure is obtained by controlling the ratio (usually between 2 and 3) of the diameter of the hydrogen composite assembly unit of the hollow structure ball bed to the diameter of the filling particles. When hydrogen and oxygen flow through the channel, the catalyst covered on the surface of the hollow structure ball bed compounds the hydrogen and the oxygen, thereby eliminating the hydrogen. The invention can effectively ensure the hydrogen elimination capability of the hydrogen recombiner assembly unit, and has the advantages of smaller flow resistance, simple structure and strong practicability.
Description
Technical Field
The invention belongs to the field of dehydrogenation devices in the nuclear energy industry sector, and particularly relates to a hydrogen recombiner component unit design adopting a hollow structure ball bed.
Background
In a nuclear reactor, a large amount of hydrogen is produced by the reaction of the fuel cladding (zircaloy or steel) with water vapor and the interaction of the core melt outside the pressure vessel with the concrete. The hydrogen is mixed with the steam and the air in the containment vessel to form combustible mixed gas. The zirconium water reaction is an exothermic chemical reaction, has a positive acceleration effect, and also aggravates the generation and aggregation risks of hydrogen, thereby threatening the integrity problem of the containment vessel.
Zr+2H2O→ZrO2+2H2↑
The hydrogen elimination technology in the containment vessel under the severe accident condition of the nuclear power plant is highly valued by all countries in the world. The passive hydrogen recombiner has the advantages of no need of external energy, capability of being quickly started under the condition of normal temperature and low concentration hydrogen, no moving parts, passive continuous hydrogen elimination and the like, so that the passive hydrogen recombiner becomes a nuclear power plant serious accident hydrogen elimination device commonly adopted by the nuclear safety authorities of various countries in the world, and the passive hydrogen elimination technology also becomes a research hotspot of the nuclear power plant hydrogen risk control technology. The hydrogen recombiner uses a catalyst to make hydrogen and oxygen generate oxidation reaction outside the combustible concentration range to generate water, and uses the heat generated by the oxidation reaction to make the gas flow to generate a chimney effect to form natural circulation.
The invention provides a component unit for the passive hydrogen recombiner, which can solve the problem of large flow resistance of a common ball bed channel component and improve the comprehensive performance of the hydrogen recombiner.
Disclosure of Invention
The invention aims to provide a hydrogen composite component adopting a ball bed with a hollow structure.
The purpose of the invention is realized by the following technical scheme:
the utility model provides an adopt hydrogen composite component of hollow structure ball bed which characterized in that: a hydrogen composite assembly unit including a hollow structure ball bed; the hydrogen composite component unit of the hollow structure ball bed comprises spherical particles, wherein the spherical particles with the same diameter are regularly filled in the radial direction, and form a stable and ordered spiral layer in the axial direction to form the hydrogen composite component unit of the hollow structure ball bed; and the hydrogen composite component units of the hollow-structure ball bed are circularly filled until the whole channel is constructed, the hollow-structure ball bed has the characteristic of high self-assembly, namely a highly-ordered stable annular stacking structure is formed, and a free flowing space is reserved at the center.
The present invention may further comprise:
the ratio of the diameter of the hydrogen composite component unit of the hollow structure ball bed to the diameter of the spherical particles is 2 to 3.
The invention has the beneficial effects that:
1. the invention selects the hydrogen recombiner catalytic assembly unit of the hollow structure ball bed in the hydrogen recombination assembly unit of the hollow structure ball bed. The hydrogen composite component unit of the hollow structure ball bed adopts a close packing method, the particle distribution of a single spherical particle layer is regular and compact, a completely penetrating central pore passage can be spontaneously formed, and the hydrogen composite component unit has the advantages of simple structure and easiness in realization.
2. The ratio of the diameter of the hydrogen composite component unit of the hollow structure ball bed to the diameter of the filling ball-shaped particles is controlled to be 2-3, a highly spiral ordered and stable annular layer is formed, a space for free flow of gas is reserved at the center, and the flow resistance is far smaller than that of the traditional randomly filled ball-shaped catalytic particle structure.
Drawings
FIG. 1 is a radial distribution view of a hydrogen recombiner assembly unit of a hollow structure pebble bed.
FIG. 2 is an axial distribution view of a hydrogen recombiner assembly unit of a hollow structure pebble bed.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
According to the figure 1, the invention selects a hollow structure ball bed on the structure of the building unit in the novel passive hydrogen recombiner. The axial distribution of the ball bed is shown in the figure, and the better structural stability can be maintained. The catalytic component unit of the hollow structure ball bed is formed by stacking balls with the same diameter, and can be obtained by two filling methods: the first method follows the strict split-fill, small-amplitude shaking process requirement to ensure that each incremental particle in the channel is refilled with a new particle after it is in the correct position. This loops until the entire channel build is complete. The second method is an improved form based on the first method, and the operation is more convenient. The initial particle layer is first deposited by the first method, the initial central opening is formed and then a hard material rod is inserted to pre-occupy this position, followed by a large particle packing.
According to fig. 2, the radial distribution of the ball bed is shown, and different numbers of balls with single particle layers can be set according to different design requirements of specific structures. The assembly unit of the hollow structure ball bed adopts a close packing method, and the diameter ratio of the unit and the balls is controlled to enable the heat transfer pipe to spontaneously form a completely penetrated central hole. The particle distribution of a single particle layer is regular and compact, and the particle-free particle bed has the advantages of simple structure and easy realization.
It will be apparent to those skilled in the art that all such changes and modifications can be made to the above-described embodiments and concepts, such as adjusting the ratio of the diameter of the catalytic module unit to the diameter of the packing particles (usually between 2 and 3), the structure and catalytic material, and the hollow channel size, to meet different hydrogen absorption capacity requirements, structural stability requirements, and flow resistance variations, and shall fall within the scope of the present invention.
Claims (2)
1. The utility model provides an adopt hydrogen composite component of hollow structure ball bed which characterized in that: a hydrogen composite assembly unit including a hollow structure ball bed; the hydrogen composite component unit of the hollow structure ball bed comprises spherical particles, wherein the spherical particles with the same diameter are regularly filled in the radial direction, and form a stable and ordered spiral layer in the axial direction to form the hydrogen composite component unit of the hollow structure ball bed; and the hydrogen composite component units of the hollow-structure ball bed are circularly filled until the whole channel is constructed, the hollow-structure ball bed has the characteristic of high self-assembly, namely a highly-ordered stable annular stacking structure is formed, and a free flowing space is reserved at the center.
2. A hydrogen recombination assembly using a hollow structure ball bed according to claim 1, wherein: the ratio of the diameter of the hydrogen composite component unit of the hollow structure ball bed to the diameter of the spherical particles is between 2 and 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111326760.8A CN114093531A (en) | 2021-11-10 | 2021-11-10 | Hydrogen composite assembly adopting hollow structure ball bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111326760.8A CN114093531A (en) | 2021-11-10 | 2021-11-10 | Hydrogen composite assembly adopting hollow structure ball bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114093531A true CN114093531A (en) | 2022-02-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111326760.8A Pending CN114093531A (en) | 2021-11-10 | 2021-11-10 | Hydrogen composite assembly adopting hollow structure ball bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114093531A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090268860A1 (en) * | 2008-04-28 | 2009-10-29 | Yingzhong Lu | Process for accelerating the breeding and conversion of fissile fuel in nuclear reactors |
| CN110788330A (en) * | 2019-11-07 | 2020-02-14 | 江苏集萃安泰创明先进能源材料研究院有限公司 | Aluminum-containing composite hydrogen storage alloy and preparation method thereof, composite solid hydrogen storage tank and hydrogen storage performance testing method |
-
2021
- 2021-11-10 CN CN202111326760.8A patent/CN114093531A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090268860A1 (en) * | 2008-04-28 | 2009-10-29 | Yingzhong Lu | Process for accelerating the breeding and conversion of fissile fuel in nuclear reactors |
| CN110788330A (en) * | 2019-11-07 | 2020-02-14 | 江苏集萃安泰创明先进能源材料研究院有限公司 | Aluminum-containing composite hydrogen storage alloy and preparation method thereof, composite solid hydrogen storage tank and hydrogen storage performance testing method |
Non-Patent Citations (2)
| Title |
|---|
| 张红见, 胡石林, 吴全锋: "氢氧复合疏水催化剂的制备", 核化学与放射化学, no. 03, 20 August 2003 (2003-08-20) * |
| 郭泽华: "基于球形催化颗粒的新型组件式非能动高效氢气复合器", Retrieved from the Internet <URL:http://cnst.hrbeu.edu.cn/info/1022/2554.htm> * |
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