US3345136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-stage shift conversion method for hydrogen production
Assignee: Pullman Inc
•
Filing: 1963-10-02
•
Granted: 1967-10-03
•
Expires: 1983-10-02
Abstract
No abstract record available.
Inventors
- 👤 Jr James A Finneran
- 👤 Leonard C Axelrod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:34
CPC Classifications
C; C10; C10K; C10K3/00; C10K3/02; C10K3/04; C01; C01B; C01B3/00; C01B3/02; C01B3/06; C01B3/12; C01B3/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A PROCESS FOR THE PRODUCTION BY HYDROGEN WHICH COMPRISES (A) CONTRACTING A GAS CONTAINING CARBON MONOXIDE AND SULFUR WITH STEAM IN THE PRESENCE OF A HIGH TEMPERATURE SHIFT CONVERSION CATALYST AT TEMPERATURES IN THE RANGE OF ABOUT 600 TO ABOUT 850*F. TO PRODUCE GAS ENRICHED IN HYDROGEN AND CARBON DIOXIDE, (B) COOLING SAID ENRICHED GAS TO A TEMPERATURE IN THE RANGE OF ABOUT 430 TO ABOUT 530*F., (C) REMOVING SULFUR FROM SAID COOLED GAS TO PRODUCE SWEETENED GAS, AND (D) CONTACTING SAID SWEETENED GAS WITH STEAM IN THE PRESENCE OF A LOW TEMPERATURE SHIFT CONVERSION CATALYST AT TEMPERATURES IN THE RANGE OF ABOUT 430 TO ABOUT 550*F. TO PRODUCE GAS LOW IN CARBON MONOXIDE AND FURTHER ENRICHED IN HYDROGEN AND CARBON DIOXIDE.
Claim 2
Dependent Claim
122 words
A PROCESS FOR THE PRODUCTION BY HYDROGEN WHICH COMPRISES (A) CONTRACTING A GAS CONTAINING CARBON MONOXIDE AND SULFUR WITH STEAM IN THE PRESENCE OF A HIGH TEMPERATURE SHIFT CONVERSION CATALYST AT TEMPERATURES IN THE RANGE OF ABOUT 600 TO ABOUT 850*F. TO PRODUCE GAS ENRICHED IN HYDROGEN AND CARBON DIOXIDE, (B) COOLING SAID ENRICHED GAS TO A TEMPERATURE IN THE RANGE OF ABOUT 430 TO ABOUT 530*F., (C) REMOVING SULFUR FROM SAID COOLED GAS TO PRODUCE SWEETENED GAS, AND (D) CONTACTING SAID SWEETENED GAS WITH STEAM IN THE PRESENCE OF A LOW TEMPERATURE SHIFT CONVERSION CATALYST AT TEMPERATURES IN THE RANGE OF ABOUT 430 TO ABOUT 550*F. TO PRODUCE GAS LOW IN CARBON MONOXIDE AND FURTHER ENRICHED IN HYDROGEN AND CARBON DIOXIDE.
References Cited (Backward Citations)
CA594285A
Cited
GB254288A
Cited
US1809978A
Cited
GB345067A
Cited
US2110240A
Cited
US2487981A
Cited
US3010807A
Cited
US3074783A
Cited
US3128163A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |