Patent US853803A successfully refreshed from Google Patents.
Patent US2601121A successfully refreshed from Google Patents.
US2601121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preconditioning hydrocarbon synthesis catalyst and removing fines therefrom
Assignee: Standard Oil Development Co
•
Filing: 1948-04-29
•
Granted: 1952-06-17
•
Expires: 1968-04-29
Abstract
No abstract record available.
Inventors
- 👤 William J Mattox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:57
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/20; B01J27/22; B01J23/00; B01J23/70; B01J23/74; B01J23/745; B01J37/00; B01J37/16; B01J37/18; C; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/0425; C07C1/0445; C07C2523/00; C07C2523/70; C07C2523/74; C07C2523/745
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
137 words
IN THE METHOD OF PRECONDITIONING AN IRON CATALYST IN POWDERED FOR TO ADAPT IT FOR FLUIDIZATION IN A HYDROCARBON SYNTHESIS PROCESS, THE STEPS OF SUBJECTING THE SAID POWDERED IRON-TYPE CATALYST WHILE MAINTAINED IN THE FORM OF A FLUIDIZED BED TO THE INFLUENCE OF A GAS CONTAINING H2 AND CO IN WHICH THE H2/CO RATIO IS FROM ABOUT 1-5 MOLS OF H2 PER MOL OF CO AT ELEVATED TEMPERATURES WITHIN THE RANGE OF FROM ABOUT 500* F. TO 900* F. FOR AN EXTENDED PERIOD OF TIME WHEREBY A SUBSTANTIAL PROPORTION OF THE IRON IS CONVERTED TO IRON CARBIDE AND THE CATALYST UNDERGOES AT LEAST PARTIAL FRAGMENTATION TO SIZES TOO SMALL TO BE SATISFACTORILY ADAPTED TO FLUIDIZATION AND THEREAFTER SEPARATING A PORTION OF THE FINES AND RECOVERING FOR USE IN SAID HYDROCARBON SYNTHESIS PROCESS THE PORTION ADAPTABLE TO FLUIDIZATION.
Claim 2
Dependent Claim
137 words
IN THE METHOD OF PRECONDITIONING AN IRON CATALYST IN POWDERED FOR TO ADAPT IT FOR FLUIDIZATION IN A HYDROCARBON SYNTHESIS PROCESS, THE STEPS OF SUBJECTING THE SAID POWDERED IRON-TYPE CATALYST WHILE MAINTAINED IN THE FORM OF A FLUIDIZED BED TO THE INFLUENCE OF A GAS CONTAINING H2 AND CO IN WHICH THE H2/CO RATIO IS FROM ABOUT 1-5 MOLS OF H2 PER MOL OF CO AT ELEVATED TEMPERATURES WITHIN THE RANGE OF FROM ABOUT 500* F. TO 900* F. FOR AN EXTENDED PERIOD OF TIME WHEREBY A SUBSTANTIAL PROPORTION OF THE IRON IS CONVERTED TO IRON CARBIDE AND THE CATALYST UNDERGOES AT LEAST PARTIAL FRAGMENTATION TO SIZES TOO SMALL TO BE SATISFACTORILY ADAPTED TO FLUIDIZATION AND THEREAFTER SEPARATING A PORTION OF THE FINES AND RECOVERING FOR USE IN SAID HYDROCARBON SYNTHESIS PROCESS THE PORTION ADAPTABLE TO FLUIDIZATION.
Claim 3
Dependent Claim
43 words
THE METHOD OF PRECONDITIONING OF CLAIM 1 IN WHICH THE CATALYST ORIGINALLY IN THE FORM OF AN OXIDE IS SUBJECTED TO A REDUCTION WITH HYDROGEN TO CONVERT A MAJOR PORTION OF THE IRON OXIDE TO METALLIC IRON PRIOR TO THE SAID PRECONDITIONING OPERATION.
References Cited (Backward Citations)
US1789507A
Cited
US2437051A
Cited
US2445795A
Cited
US2478899A
Cited
US2481841A
Cited
US2438584A
Cited
US2445796A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-17 | 1955-12-17 | 1956-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-17 | 1959-12-17 | 1960-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-17 | 1963-12-17 | 1964-06-17 | $7700.00 | Window Closed / Lapsed |