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A large-area palladium membrane device for hydrogen isotope separation

A hydrogen isotope, large-area technology, applied in the field of gas separation and purification, can solve the problems of inability to process large ash gas and limited hydrogen permeation area, and achieve the effects of increasing hydrogen purification, increasing hydrogen permeation area, and reducing costs

Inactive Publication Date: 2017-06-27
INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, deuterium-tritium purifiers commonly used in the world use parallel distributed palladium bundle tubes as membrane components, and the hydrogen permeation area is limited, so it is impossible to achieve a large ash gas treatment capacity on a smaller purifier.

Method used

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  • A large-area palladium membrane device for hydrogen isotope separation
  • A large-area palladium membrane device for hydrogen isotope separation
  • A large-area palladium membrane device for hydrogen isotope separation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The diameter of the central support 4 is 10 mm, and the thickness of the annular support 2 is 1 mm. The coiled palladium membrane components are arranged from the inside to the outside. The diameter of the first layer of palladium membrane is 10 mm, the diameter of the second layer of palladium membrane is 12 mm, and the diameter of the third layer of palladium membrane is 14 mm. To the 26th layer, the diameter of the palladium membrane module is 60 mm; the length of the palladium membrane module is 500 mm. The membrane area of ​​the coiled palladium membrane module can be determined by the formula ( ) It is calculated that the membrane area of ​​the coiled palladium membrane module is 1.43m 2 , Is 4.6 times of the distributed palladium beam tube palladium membrane module.

Embodiment 2

[0026] The diameter of the central support 4 is 10 mm, and the thickness of the annular support 2 is 2 mm. The coiled palladium membrane components are arranged from the inside to the outside. The diameter of the first layer of palladium membrane is 10 mm, the diameter of the second layer of palladium membrane is 14 mm, and the diameter of the third layer of palladium membrane is 18 mm. The difference in diameter between the two adjacent layers is 4 mm. To the 13th layer, the diameter of the palladium membrane module is 58 mm; the length of the palladium membrane module is 500 mm. The overall size of the coiled palladium membrane module of this embodiment is slightly smaller than 100 distributed palladium beam tube palladium membrane modules. The membrane area of ​​the coiled palladium membrane module can be determined by the formula ( ) It is calculated that the membrane area of ​​the coiled palladium membrane module is 0.69 m 2 , Is 2.2 times of the distributed palladium bea...

Embodiment 3

[0028] The diameter of the central support 4 is 15 mm, and the thickness of the annular support 2 is 1 mm. The coiled palladium membrane modules are arranged from the inside to the outside. The diameter of the first layer of palladium membrane is 15 mm, the diameter of the second layer of palladium membrane is 17 mm, and the diameter of the third layer of palladium membrane is 19 mm. The diameter difference between two adjacent layers is 2 mm. To the 23rd layer, the diameter of the palladium membrane module is 59 mm; the length of the palladium membrane module is 500 mm. The overall size of the coiled palladium membrane module of this embodiment is slightly smaller than 100 distributed palladium beam tube palladium membrane modules. The membrane area of ​​the coiled palladium membrane module can be determined by the formula ( ) It is calculated that the membrane area of ​​the coiled palladium membrane module is 1.34 m 2 , Which is 4.3 times of the distributed palladium beam tu...

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Abstract

The invention provides a large-area palladium membrane device for hydrogen isotope separation. According to the device, two palladium-alloy membranes with the same size are overlapped and welded to the left side and the right side, and a two-layer palladium membrane is formed; a center supporting body with the length smaller than that of the palladium-alloy membranes is taken, the upper end of the two-layer palladium membrane is flush with the center supporting body, and the lower end of the two-layer palladium membrane protrudes out of the center supporting body; the center supporting body is wound with multiple circles of cylindrical palladium membrane components in an attached mode, the ends, flush with each other, of the palladium membrane components face upwards, the palladium membrane components are vertically inserted into an assembled flange, the two-layer palladium membrane at the flush ends is welded, and a first welded joint is formed; a gap between the two-layer palladium membrane inserted into the flange and the flange is welded, and a second welded joint is formed; the inner side and the outer side of the two-layer palladium membrane are filled with porous supporting bodies, an annular supporting body is formed, and the large-area palladium membrane device for hydrogen isotope separation is formed. The curved-type palladium membrane components of the device can increase the hydrogen permeation area, increase the purification quantity in unit time and reduce the material cost, and the device is suitable for places of hydrogen isotope separating and recycling in fusion reactors and the like.

Description

Technical field [0001] The invention belongs to the field of gas separation and purification, in particular a large-area palladium membrane device for hydrogen isotope separation. Background technique [0002] Palladium membrane separation technology is generally used internationally to separate hydrogen isotopes in ash exhaust gas to achieve the purpose of recovering deuterium and tritium. The palladium alloy tube diffusion method to purify deuterium and tritium takes advantage of the feature that hydrogen isotope gas can selectively permeate through palladium alloy membrane at a certain temperature, and realizes the separation of hydrogen isotope gas from other impurity gases. Using this method, high purity deuterium tritium gas with a purity greater than 99.9999% can be obtained. [0003] The key component in the palladium alloy tube diffusion method is the deuterium-tritium purifier. Since the deuterium-tritium purifier needs to be in direct contact with tritium, in order to r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D59/10C01B3/50
CPCB01D59/10C01B3/505
Inventor 岳磊王和义肖成建熊亮萍龚宇侯京伟陈晓军
Owner INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF