Nuclear facility post-accident hydrogen absorption material preparation process

A technology for hydrogen-absorbing materials and nuclear facilities, applied in metal material coating technology, liquid chemical plating, coating, etc., can solve the problems of unseen mature applications in the nuclear field, and achieve excellent hydrogen-absorbing performance and compact structure , Improve the effect of stability and reliability

Inactive Publication Date: 2020-08-11
上海申核能源工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Hydrogen storage (hydrogen absorption or hydrogen storage) technology is a mature technology in the hydrogen energy utilization industry. Hydrogen storage materials have the characteristics of high hydrogen storage density, fast hydrogen absorption and desorption speed, controllable operating conditions, and long life. They are widely used in High-efficiency storage of hydrogen, hydrogen fuel cell related fields, but no mature application in the nuclear field

Method used

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  • Nuclear facility post-accident hydrogen absorption material preparation process

Examples

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example 1

[0018] When preparing the ferro-zirconium vanadium alloy, the alloy is melted in a vacuum induction furnace at a melting temperature of about 1900°C, and the alloy ingot obtained by melting is heat-treated for 160 hours at 900°C under the protection of an argon atmosphere. The ferro-zirconium-vanadium alloy after heat treatment is cut into blocks, and its size is (10mm) (length) × (10mm) (width) × (2mm) (height). After the surface of the alloy is cleaned and polished, a palladium-platinum-copper alloy film is coated on the surface of the zirconium-vanadium-iron alloy by electroless plating, and the thickness of the palladium-platinum-copper alloy film is 2 μm. Then, the hydrogen-absorbing material is cleaned and dried before activation. The activation process is: at 500°C, vacuumize the hydrogen-absorbing material for 10 minutes, and the vacuum degree required for vacuuming is 10 -2 Pa. The cost is obtained after the hydrogen absorbing material is activated.

example 2

[0020] When preparing ferro-zirconium vanadium alloy, the alloy is smelted in a vacuum induction furnace at a melting temperature of about 2000°C, and the alloy ingot obtained by melting is heat-treated for 120 hours at 1000°C under nitrogen atmosphere protection conditions. The ferro-zirconium-vanadium alloy after heat treatment is cut into blocks, and its size is (150mm) (length) × (150mm) (width) × (3.5mm) (height). After the alloy surface is cleaned and polished, a palladium-platinum-copper alloy film is coated on the surface of the zirconium-vanadium-iron alloy by electroless plating, and the thickness of the palladium-platinum-copper alloy film is 5 μm. Then, the hydrogen-absorbing material is cleaned and dried before activation. The activation process is: at 450°C, vacuumize the hydrogen-absorbing material for 30 minutes, and the vacuum degree of vacuuming is required to be 10 -2 Pa. The cost is obtained after the hydrogen absorbing material is activated.

example 3

[0022] When preparing ferro-zirconium vanadium alloy, the alloy is smelted in a vacuum induction furnace at a melting temperature of about 2200°C, and the alloy ingot obtained by melting is heat-treated for 70 hours at 1100°C under nitrogen atmosphere protection conditions. The ferro-zirconium vanadium alloy after the heat treatment is cut into blocks, and its size is (200mm) (length) × (200mm) (width) × (10mm) (height). After the surface of the alloy is cleaned and polished, a palladium-platinum-copper alloy film is coated on the surface of the zirconium-vanadium-iron alloy by electroless plating, and the thickness of the palladium-platinum-copper alloy film is 10 μm. Then, the hydrogen-absorbing material is cleaned and dried before activation. The activation process is: at 400°C, vacuumize the hydrogen-absorbing material for 60 minutes, and the vacuum degree of vacuuming is required to be 10 -1 Pa. The cost is obtained after the hydrogen absorbing material is activated.

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Abstract

The invention provides a nuclear facility post-accident hydrogen absorption material preparation process. A hydrogen absorption material is formed by a Zr-V-Fe alloy coated with a Pd-Pt-Cu alloy film.The process comprises the Zr-V-Fe alloy smelting step, the heat treatment step, the cutting step, the film coating step and the activation step, wherein the Zr-V-Fe alloy is smelted through a vacuumarc furnace or a vacuum induction furnace; a smelted cast ingot is subjected to heat treatment and then is cut into blocks; and the surface of each block is coated with the Pd-Pt-Cu alloy film with acertain thickness through the chemical plating method. The blocky Zr-V-Fe alloy has the excellent hydrogen absorption performance. The surface of the alloy is treated easily. The Pd-Pt-Cu alloy film attached firmly is evenly coated with the surface of the alloy. The Zr-V-Fe alloy and the Pd-Pt-Cu alloy film are matched in size. The excellent performance and material cost of the hydrogen absorptionmaterial are both taken into consideration, and the stability and reliability of the hydrogen absorption material are improved. The blocky hydrogen absorption material can serve as a basic module forconstructing a hydrogen control system and is convenient to use and compact in structure.

Description

technical field [0001] The invention relates to the field of containment control of nuclear facilities, in particular to the field of hydrogen-absorbing materials for containment of nuclear facilities. Background technique [0002] The containment hydrogen control system is a key component of the special safety system of a nuclear power plant / nuclear facility, and an important measure to ensure the integrity of the containment after an accident and prevent radioactive leakage. The traditional containment hydrogen control mode has two methods: hydrogen elimination and atmosphere inertization: 1) Hydrogen elimination is to use hydrogen elimination equipment to eliminate hydrogen through combustion or hydrogen-oxygen catalytic compounding. Typical hydrogen elimination equipment: such as combustion methods have Hydrogen igniter, catalytic recombination method has passive hydrogen recombiner; 2) atmosphere inertization is to eliminate or reduce the oxygen in the atmosphere inside...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C33/04C22F1/02C21D1/74C23C18/48C21D1/773
CPCC21D1/74C21D1/773C22C1/02C22C33/04C22F1/02C23C18/48
Inventor 胡川郑琪陈晓刘鑫廖亮汤智超路璐
Owner 上海申核能源工程技术有限公司
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