CN105903349A - Large-area palladium membrane device for hydrogen isotope separation - Google Patents
Large-area palladium membrane device for hydrogen isotope separation Download PDFInfo
- Publication number
- CN105903349A CN105903349A CN201610398103.7A CN201610398103A CN105903349A CN 105903349 A CN105903349 A CN 105903349A CN 201610398103 A CN201610398103 A CN 201610398103A CN 105903349 A CN105903349 A CN 105903349A
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- palladium
- palladium membrane
- membrane
- membrane component
- hydrogen isotope
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D59/00—Separation of different isotopes of the same chemical element
- B01D59/10—Separation by diffusion
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
- C01B3/501—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by diffusion
- C01B3/503—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by diffusion characterised by the membrane
- C01B3/505—Membranes containing palladium
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
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
The invention belongs to the isolated and purified field of gas, a kind of large area palladium film device for hydrogen isotope separation.
Background technology
The most typically use the hydrogen isotope in palladium membrane separation technique separation ash discharge gas, to reach to reclaim the mesh of deuterium tritium
's.Palladium alloy pipe diffusion method purifies deuterium tritium and make use of hydrogen isotope gas can selectively pass through palladium alloy membrane at a certain temperature
Feature, it is achieved that hydrogen isotope gas separates with other foreign gas.Utilize the method, it is possible to obtain purity is more than
99.9999 high-purity deuterium tritium gas of %.
Critical component in palladium alloy pipe diffusion method is deuterium tritium cleaning device, owing to deuterium tritium cleaning device needs directly to connect with tritium
Touching, in order to the hold-up and tritium reducing tritium is polluted, designed deuterium tritium cleaning device volume requirement is the least.Lead in the world at present
Deuterium tritium cleaning device use parallel distributed palladium beam tube be membrane module, ooze hydrogen limited area, it is impossible on less depurator
Realize bigger ash discharge gas disposal amount.The single palladium tube depurator of the Karlsruhe, Germany Institute of Technology comprises 53 hollow palladium tubes
(Pd/Ag, Ag content 23 %), a length of 530 mm of palladium tube, a diameter of 2.5 mm, thickness is 100 μm, and palladium alloy membrane area is only
0.22 m2, oozing hydrogen speed is 80 mol h-1·m-2, the most only can penetrate the hydrogen isotope of 17.6 mol.Thus compel to be essential
It is big that one to be designed oozes hydrogen area, the palladium membrane component that infiltration rate is high.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of large area palladium film device for hydrogen isotope separation.
The large area palladium film device for hydrogen isotope separation of the present invention, is characterized in, described device includes ring-type
Supporter, palladium alloy membrane, central support and flange；The palladium alloy membrane of two same sizes is overlapping, and the welding left and right sides is formed
Double-deck palladium film；Central support is cylinder, and material is porous support materials, and the length of central support is less than palladium alloy membrane
Length, the top of central support is concordant with the top of double-deck palladium film, and the bottom of central support is wrapped in the interior of palladium alloy membrane
Portion, double-deck palladium film is around central support around forming cylindric palladium membrane component, and the bottom of palladium membrane component is hollow parts；Palladium film
The hollow parts of assembly is inserted vertically into the flange of adaptation, and the gap between welding palladium membrane component and flange forms weld seam II；Welding
The double-deck palladium film on palladium membrane component top forms weld seam I；Filling porous backing material in the gap of palladium membrane component, forms ring-type
Support body.
Porous support materials is stainless steel fibre.The thickness range of annular support body is 1 ~ 2 mm.Central support straight
Footpath scope is 10 mm ~ 20 mm.
Palladium alloy membrane is palladium-silver or palladium yttrium alloys, and the mass ratio of palladium-silver is palladium: silver=77:23, palladium yttrium alloys
Mass ratio is palladium: yttrium=93.4:6.6.
During purification, gas to be purified is entered at the upper end open of curled palladium membrane component, hydrogen isotope after purification
Gas oozes out at the lower ending opening of curled palladium membrane component.
Palladium membrane component in the large area palladium film device for hydrogen isotope separation of the present invention is curled palladium membrane component,
Can increase and ooze hydrogen area on the premise of not changing palladium membrane component volume, promote the hydrogen purification amount of unit interval, reduce material
Cost.Large area palladium film device separation of hydrogen isotope be applicable to fusion reactor for hydrogen isotope separation of the present invention is returned
The application scenario that the hydrogen treating capacities such as the hydrogen collection in receipts, industries are big.
Accompanying drawing explanation
Fig. 1 is the palladium membrane component work flow of the large area palladium film device for hydrogen isotope separation of the present invention；
Fig. 2 is large area palladium film device structure chart (front view) for hydrogen isotope separation of the present invention；
Fig. 3 is large area palladium film device structure chart (A-A profile) for hydrogen isotope separation of the present invention.
In figure, 1. weld seam I 2. annular support body 3. palladium alloy membrane 4. central support 5. weld seam II 6. flange；
I. monolayer palladium film；II. double-deck palladium film；III. palladium membrane component.
Detailed description of the invention
The present invention is described in detail below in conjunction with the accompanying drawings with embodiment.
As shown in Figure 1-Figure 3, the large area palladium film device for hydrogen isotope separation of the present invention, described device includes
Annular support body 2, palladium alloy membrane 3, central support 4 and flange 6；The palladium alloy membrane 3 of two same sizes is overlapping, about welding
Both sides form double-deck palladium film；Central support 4 is cylinder, and material is porous support materials, and the length of central support 4 is less than
The length of palladium alloy membrane 3, the top of central support 4 is concordant with the top of double-deck palladium film, and the bottom of central support 4 is wrapped in
The inside of palladium alloy membrane 3, double-deck palladium film around central support 4 around forming cylindric palladium membrane component, the bottom of palladium membrane component
For hollow parts；The hollow parts of palladium membrane component is inserted vertically into the flange 6 of adaptation, the seam between welding palladium membrane component and flange 6
Gap forms weld seam II 5；The double-deck palladium film on welding palladium membrane component top forms weld seam I 1；In the gap of palladium membrane component filling porous
Backing material, forms annular support body 2.
Porous support materials is stainless steel fibre.The thickness range of annular support body 2 is 0.5 ~ 2 mm.Central support 4
Diameter range be 10 mm ~ 20 mm.
The length of palladium alloy membrane 3 is less than or equal to 5000 mm, and width is equal to 500 mm, and thickness is equal to 25 m.
Palladium alloy membrane 3 is palladium-silver or palladium yttrium alloys, and the mass ratio of palladium-silver is palladium: silver=77:23, palladium yttrium alloys
Mass ratio be palladium: yttrium=93.4:6.6.
For comparing the palladium membrane area difference of the curled palladium membrane component in the present invention and distributed palladium beam tube palladium membrane component, do
Calculated below.Owing to the pipe thickness of palladium beam tube is only the 1/20 of pipe diameter, therefore calculate palladium beam tube palladium membrane area process below
All ignore pipe thickness.
A length of 500 mm of palladium tube, diameter 2 mm of distributed palladium beam tube palladium membrane component, interval generally caliber 2 times, i.e. 4
Mm, through arrangement, can in the range of 60 mm 100 palladium tubes of distributed arrangement.The oozing hydrogen area and can lead to of palladium beam tube palladium membrane component
Cross formula and be calculated as 0.31 m2。
The curled palladium membrane component size of following example is identical with the apparent size of palladium beam tube palladium membrane component, drum diameter
Be 60 mm, a length of 500 mm, below by embodiment calculate curled palladium membrane component ooze hydrogen area.
Embodiment 1
A diameter of 10 mm of central support 4, the thickness of annular support body 2 is 1 mm.Curled palladium membrane component is from inside to outside arranged
Cloth, the 1st layer of a diameter of 10 mm of palladium film, the 2nd layer of a diameter of 12 mm of palladium film, the 3rd layer of a diameter of 14 mm of palladium film, adjacent two layers is straight
Footpath differs 2 mm, and during to the 26th layer, palladium membrane component is a diameter of is 60 mm；A length of 500 mm of palladium membrane component.Curled palladium film group
The membrane area of part can pass through formula () be calculated, the membrane area of curled palladium membrane component is 1.43 m2,
It it is 4.6 times of distributed palladium beam tube palladium membrane component.
Embodiment 2
A diameter of 10 mm of central support 4, the thickness of annular support body 2 is 2 mm.Curled palladium membrane component is from inside to outside arranged
Cloth, the 1st layer of a diameter of 10 mm of palladium film, the 2nd layer of a diameter of 14 mm of palladium film, the 3rd layer of a diameter of 18 mm of palladium film, adjacent two layers is straight
Footpath differs 4 mm, and during to the 13rd layer, palladium membrane component is a diameter of is 58 mm；A length of 500 mm of palladium membrane component.The volume of the present embodiment
The overall dimensions of curved palladium membrane component is slightly less than 100 distributed palladium beam tube palladium membrane components.The membrane area of curled palladium membrane component
Can pass through formula () be calculated, the membrane area of curled palladium membrane component is 0.69 m2, it is distributed palladium
2.2 times of beam tube palladium membrane component.
Embodiment 3
A diameter of 15 mm of central support 4, the thickness of annular support body 2 is 1 mm.Curled palladium membrane component is from inside to outside arranged
Cloth, the 1st layer of a diameter of 15 mm of palladium film, the 2nd layer of a diameter of 17 mm of palladium film, the 3rd layer of a diameter of 19 mm of palladium film, adjacent two layers is straight
Footpath differs 2 mm, and during to the 23rd layer, palladium membrane component is a diameter of is 59 mm；A length of 500 mm of palladium membrane component.The volume of the present embodiment
The overall dimensions of curved palladium membrane component is slightly less than 100 distributed palladium beam tube palladium membrane components.The membrane area of curled palladium membrane component
Can pass through formula () be calculated, the membrane area of curled palladium membrane component is 1.34 m2, it is distributed palladium
4.3 times of beam tube palladium membrane component.
Embodiment 4
A diameter of 15 mm of central support 4, the thickness of annular support body 2 is 2 mm.Curled palladium membrane component is from inside to outside arranged
Cloth, the 1st layer of a diameter of 15 mm of palladium film, the 2nd layer of a diameter of 19 mm of palladium film, the 3rd layer of a diameter of 23 mm of palladium film, adjacent two layers is straight
Footpath differs 4 mm, and during to the 12nd layer, palladium membrane component is a diameter of is 59 mm；A length of 500 mm of palladium membrane component.The volume of the present embodiment
The overall dimensions of curved palladium membrane component is slightly less than 100 distributed palladium beam tube palladium membrane components.The membrane area of curled palladium membrane component
Can pass through formula () be calculated, the membrane area of curled palladium membrane component is 0.70 m2, it is distributed palladium
2.2 times of beam tube palladium membrane component.
Embodiment 5
A diameter of 20 mm of central support 4, the thickness of annular support body 2 is 0.5 mm.Curled palladium membrane component is from inside to outside
Arrangement, the 1st layer of a diameter of 20 mm of palladium film, the 2nd layer of a diameter of 21 mm of palladium film, the 3rd layer of a diameter of 22 mm of palladium film, adjacent two layers
Different diameters 1 mm, during to the 41st layer, palladium membrane component is a diameter of is 60 mm；A length of 500 mm of palladium membrane component.Curled palladium film
The membrane area of assembly can pass through formula () be calculated, the membrane area of curled palladium membrane component is 2.57
m2, it is 8.3 times of distributed palladium beam tube palladium membrane component.
Embodiment 6
A diameter of 20 mm of central support 4, the thickness of annular support body 2 is 2 mm.Curled palladium membrane component is from inside to outside arranged
Cloth, the 1st layer of a diameter of 20 mm of palladium film, the 2nd layer of a diameter of 24 mm of palladium film, the 3rd layer of a diameter of 28 mm of palladium film, adjacent two layers is straight
Footpath differs 4 mm, and during to 11th layer, palladium membrane component is a diameter of is 60 mm；A length of 500 mm of palladium membrane component.Curled palladium film group
The membrane area of part can pass through formula () be calculated, the membrane area of curled palladium membrane component is 0.69 m2,
It it is 2.2 times of distributed palladium beam tube palladium membrane component.
The present invention is not limited to above-mentioned detailed description of the invention, person of ordinary skill in the field from above-mentioned design,
Without performing creative labour, done all conversion, within all falling within protection scope of the present invention.
Claims (5)
1. the large area palladium film device for hydrogen isotope separation, it is characterised in that: described device includes circumferential support
Body (2), palladium alloy membrane (3), central support (4) and flange (6)；The palladium alloy membrane (3) of two same sizes is overlapping, a welding left side
Right both sides form double-deck palladium film；Central support (4) is cylinder, and material is porous support materials, the length of central support (4)
Degree is less than the length of palladium alloy membrane (3), and the top of central support (4) is concordant with the top of double-deck palladium film, central support (4)
Bottom be wrapped in the inside of palladium alloy membrane (3), double-deck palladium film around central support (4) around forming cylindric palladium film group
Part, the bottom of palladium membrane component is hollow parts；The hollow parts of palladium membrane component is inserted vertically into the flange (6) of adaptation, welds palladium film
Gap between assembly and flange (6) forms weld seam II (5)；The double-deck palladium film on welding palladium membrane component top forms weld seam I (1)；
Filling porous backing material in the gap of palladium membrane component, forms annular support body (2).
A kind of large area palladium film device for hydrogen isotope separation the most according to claim 1, it is characterised in that: porous
Backing material is stainless steel fibre.
A kind of large area palladium film device for hydrogen isotope separation the most according to claim 1, it is characterised in that: ring-type
The thickness range of supporter (2) is 1 ~ 2 mm.
A kind of large area palladium film device for hydrogen isotope separation the most according to claim 1, it is characterised in that: center
The diameter range of supporter (4) is 10 mm ~ 20 mm.
A kind of large area palladium film device for hydrogen isotope separation the most according to claim 1, it is characterised in that: palladium closes
Gold film (3) is palladium-silver or palladium yttrium alloys, and the mass ratio of palladium-silver is palladium: silver=77:23, and the mass ratio of palladium yttrium alloys is
Palladium: yttrium=93.4:6.6.
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| CN201610398103.7A CN105903349B (en) | 2016-06-07 | 2016-06-07 | A kind of large area palladium film device for hydrogen isotope separation |
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| CN201610398103.7A CN105903349B (en) | 2016-06-07 | 2016-06-07 | A kind of large area palladium film device for hydrogen isotope separation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107051205A (en) * | 2017-02-15 | 2017-08-18 | 中国工程物理研究院材料研究所 | A kind of low temperature palladium replaces separation method |
| CN109381941A (en) * | 2018-11-30 | 2019-02-26 | 西北有色金属研究院 | A kind of hydrogen isotope purifying filter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107051205A (en) * | 2017-02-15 | 2017-08-18 | 中国工程物理研究院材料研究所 | A kind of low temperature palladium replaces separation method |
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| CN109381941A (en) * | 2018-11-30 | 2019-02-26 | 西北有色金属研究院 | A kind of hydrogen isotope purifying filter |
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| CN105903349B (en) | 2017-06-27 |
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