US3928550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making hydrogen
Assignee: Sun Ventures Inc
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Filing: 1974-09-12
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Granted: 1975-12-23
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Expires: 1994-09-12
Abstract
Abstract A process for making hydrogen which comprises reducing zinc oxide to zinc metal, combining the metallic zinc with molten lead and spraying the mixture under pressure to an oxidizer where metallic zinc is reacted with steam to yield hydrogen and zinc oxide, separating the hydrogen product under pressure, separating the zinc oxide from the molten lead, recycling zinc oxide for reduction to zinc, and recycling the lead for further use.
Inventors
- 👤 Walter H Seitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:52
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/06; C01B3/061; C01B3/063; C01B3/08; C01B3/10; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/36
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
100 words
A PROCESS FOR MAKING HYDROGEN WHICH COMPRISES CONTACTING ZINC OXIDE AT 1,350* TO 1,500*C. WITH A REDUCING GAS TO REDUCE SAID ZINC OXIDE TO ZINC METAL, CONTACTING THE METALLIC ZINC WITH MOLTEN LEAD WHICH IS INERT UNDER PROCESS CONDITIONS TO OBTAIN A SOLUTION OF ZINC IN LEAD CONTAINING FROM ABOUT 10% TO ABOUT 50% BY WEIGHT AND SPRAYING THE SOLUTION UNDER PRESSURE TO AN OXIDIZER WHERE METALLIC ZINC IS REACTED AT A TEMPERATURE OF FROM ABOUT 600* TO 900*C. AND AT ABOUT 1,000 TO 3,000 PSIG WITH STEAM TO YEILD HYDROGEN AND ZINC OXIDE, SEPARATING THE HYDROGEN UNDER PRESSURE, SEPARATING
Claim 2
Dependent Claim
100 words
A PROCESS FOR MAKING HYDROGEN WHICH COMPRISES CONTACTING ZINC OXIDE AT 1,350* TO 1,500*C. WITH A REDUCING GAS TO REDUCE SAID ZINC OXIDE TO ZINC METAL, CONTACTING THE METALLIC ZINC WITH MOLTEN LEAD WHICH IS INERT UNDER PROCESS CONDITIONS TO OBTAIN A SOLUTION OF ZINC IN LEAD CONTAINING FROM ABOUT 10% TO ABOUT 50% BY WEIGHT AND SPRAYING THE SOLUTION UNDER PRESSURE TO AN OXIDIZER WHERE METALLIC ZINC IS REACTED AT A TEMPERATURE OF FROM ABOUT 600* TO 900*C. AND AT ABOUT 1,000 TO 3,000 PSIG WITH STEAM TO YEILD HYDROGEN AND ZINC OXIDE, SEPARATING THE HYDROGEN UNDER PRESSURE, SEPARATING
Claim 3
Dependent Claim
12 words
The process of claim 1 where the reducing gas is producer gas.
Claim 4
Dependent Claim
33 words
The process of claim 2 where the reduction of zinc oxide occurs at about 1,500*C. and at about 1,500 psig. and the lead-zinc solution is oxidized at about 700*C. and about 1,500 psig.
Claim 5
Dependent Claim
20 words
The process of claim 3 where the lead-zinc solution contains zinc in an amount of about 20% to about 30%.
Claim 6
Dependent Claim
21 words
The process of claim 1 where the solution of zinc in lead is sprayed into the oxidizer as a fine mist.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |