Patent US3622303A successfully refreshed from Google Patents.
US3622303A
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US
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Method for removing hydrogen from liquid alkali metals and the like
Assignee: Atomic Power Development Associates Inc
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Filing: 1966-05-23
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Granted: 1971-11-23
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Expires: 1986-05-23
Abstract
Abstract 1. Method of removing hydrogen from liquid alkali metals which comprises: allowing such hydrogen to diffuse from such liquid metal at an elevated temperature through a bimetal barrier comprised of a first layer of metal selected from the group consisting of iron, nickel, tantalum and columbium and their alloys, which metal layer is in intimate contact with the liquid metal and a second layer of metal selected from the group consisting of palladium and platinum and alloys thereof, which second layer is in intimate contact with a gas containing oxygen, said first layer of metal providing resistance to corrosive attack on the barrier by the liquid metal, and said second layer of metal providing a catalytic action to convert the diffused hydrogen to H2'' 0.
Inventors
- 👤 Eugene F Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:35
CPC Classifications
C; C22; C22B; C22B9/00; C22B9/02; C22B26/00; C22B26/10; G; G21; G21C; G21C19/00; G21C19/28; G21C19/30; G21C19/307; G21C19/31; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
124 words
METHOD OF REMOVING HYDROGEN FROM LIQUID ALKALI METALS WHICH COMPRISES: ALLOWING SUCH HYDROGEN TO DIFFUSE FROM SUCH LIQUID METAL AT AN ELEVATED TEMPERTURE THROUGH A BIMETAL BARRIER COMPRISED OF A FIRST LAYER OF METAL SELECTED FROM THE GROUP CONSISTING OF IRON, NICKEL, TANTALUM AND COLUMBIUM AND THEIR ALLOYS, WHICH METAL LAYER IS IN INTIMATE CONTACT WITH THE LIQUID METAL AND A SECOND LAYER OF METAL SELECTED FROM THE GROUP CONSISTING OF PALLADIUM AND PLATINUM AND ALLOYS THEREOF, WHICH SECOND LAYER IS IN INTIMATE CONTACT WITH A GAS CONTAINING OXYGEN, SAID FIRST LAYER OF METAL PROVIDING RESISTANCE TO CORROSIVE ATTACK ON THE BARRIER BY THE LIQUID METAL, AND SAID SECOND LAYER OF METAL PROVIDING A CATALYTIC ACTION TO CONVERT THE DIFFUSED HYDROGEN TO H2 0.
Claim 2
Dependent Claim
124 words
METHOD OF REMOVING HYDROGEN FROM LIQUID ALKALI METALS WHICH COMPRISES: ALLOWING SUCH HYDROGEN TO DIFFUSE FROM SUCH LIQUID METAL AT AN ELEVATED TEMPERTURE THROUGH A BIMETAL BARRIER COMPRISED OF A FIRST LAYER OF METAL SELECTED FROM THE GROUP CONSISTING OF IRON, NICKEL, TANTALUM AND COLUMBIUM AND THEIR ALLOYS, WHICH METAL LAYER IS IN INTIMATE CONTACT WITH THE LIQUID METAL AND A SECOND LAYER OF METAL SELECTED FROM THE GROUP CONSISTING OF PALLADIUM AND PLATINUM AND ALLOYS THEREOF, WHICH SECOND LAYER IS IN INTIMATE CONTACT WITH A GAS CONTAINING OXYGEN, SAID FIRST LAYER OF METAL PROVIDING RESISTANCE TO CORROSIVE ATTACK ON THE BARRIER BY THE LIQUID METAL, AND SAID SECOND LAYER OF METAL PROVIDING A CATALYTIC ACTION TO CONVERT THE DIFFUSED HYDROGEN TO H2 0.
Claim 3
Dependent Claim
40 words
Method in accordance with the foregoing claim 1, and in which the hydrogen is removed from the liquid alkali metal in the form of a stream or streams, which constitute the coolant or heat-transfer agent of nuclear reactor power plants.
Claim 4
Dependent Claim
47 words
Method in accordance with the foregoing claim 1, in which method said oxidizing gas is in the form of a stream flowing over the surface of said second layer, and the catalytic action at the surface of the second layer provides a pumping effect promoting said diffusion.
Claim 5
Dependent Claim
33 words
Method in accordance with claim 1, and in which the temperature of the liquid metal material at said barrier is maintained within a range of from about 500* F. to about 1,400* F.
Claim 6
Dependent Claim
37 words
Method in accordance with the foregoing claim 1, and in which said oxidizing gas is conducted through tubing immersed in the alkali metal material, said metal providing catalytic action being present on the interior of said tubing.
Claim 7
Dependent Claim
43 words
Method in accordance with claim 1, and in which said liquid alkali metal is caused to flow through tubing, and said oxidizing gas is caused to flow around the outside surfaces of said tubing, on which is located said metal providing catalytic action.
Claim 8
Dependent Claim
20 words
Method in accoRdance with claim 1, and including the step of measuring the resulting moisture content of the oxidizing gas.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |