US2537153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluidized carbonization process
Assignee: Standard Oil Development Co
•
Filing: 1946-10-08
•
Granted: 1951-01-09
•
Expires: 1966-10-08
Abstract
No abstract record available.
Inventors
- 👤 Karl J Nelson
- 👤 Homer Z Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:23
CPC Classifications
C; C10; C10B; C10B49/00; C10B49/02; C10B49/04; C10B49/08; C10B49/10; Y; Y10; Y10S; Y10S48/00; Y10S48/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A METHOD OF CARBONIZING CARBONIZABLE FUELS WHICH COMPRISES MAINTAINING A DENSE FLUIDIZED BED OF FINELY DIVIDED SOLIDS AT CARBONIZING CONDITIONS OF TEMPERATURE AND PRESSURE, FEEDING FINELY DIVIDED CARBONIZABLE FUEL TO SAID BED, PASSING A GAS UPWARDLY THROUGH SAID BED AT A RATE SUFFICIENT TO MAINTAIN IT IN A FLUIDIZED CONDITION WHILE FORMING A WELL DEFINED UPPER LEVEL, REMOVING A DILUTE SUSPENSION OF FINELY DIVIDED SOLIDS IN VOLATILE CARBONIZATION PRODUCTS FROM SAID UPPER LEVEL, PASSING SAID SUSPENSION THROUGH A GASSOLIDS SEPARATION ZONE AND ADDING BY DIRECT HEAT EXCHANGE SUFFICIENT HEAT TO SAID VOLATILE PRODUCTS AT A POINT SUBSEQUENT TO SAID LEVEL IN THE DIRECTION OF THE GAS FLOW TO MAINTAIN THEIR TEMPERATURE ABOVE CONDENSATION TEMPERATURE UNTIL THEY HAVE LEFT SAID SEPARATION ZONE, BY BURNING A POR-
Claim 2
Independent Claim
125 words
A METHOD OF CARBONIZING CARBONIZABLE FUELS WHICH COMPRISES MAINTAINING A DENSE FLUIDIZED BED OF FINELY DIVIDED SOLIDS AT CARBONIZING CONDITIONS OF TEMPERATURE AND PRESSURE, FEEDING FINELY DIVIDED CARBONIZABLE FUEL TO SAID BED, PASSING A GAS UPWARDLY THROUGH SAID BED AT A RATE SUFFICIENT TO MAINTAIN IT IN A FLUIDIZED CONDITION WHILE FORMING A WELL DEFINED UPPER LEVEL, REMOVING A DILUTE SUSPENSION OF FINELY DIVIDED SOLIDS IN VOLATILE CARBONIZATION PRODUCTS FROM SAID UPPER LEVEL, PASSING SAID SUSPENSION THROUGH A GASSOLIDS SEPARATION ZONE AND ADDING BY DIRECT HEAT EXCHANGE SUFFICIENT HEAT TO SAID VOLATILE PRODUCTS AT A POINT SUBSEQUENT TO SAID LEVEL IN THE DIRECTION OF THE GAS FLOW TO MAINTAIN THEIR TEMPERATURE ABOVE CONDENSATION TEMPERATURE UNTIL THEY HAVE LEFT SAID SEPARATION ZONE, BY BURNING A POR-
References Cited (Backward Citations)
USRE17181E
Cited
US1770020A
Cited
GB335740A
Cited
US1984380A
Cited
US2098024A
Cited
US2360787A
Cited
US2339932A
Cited
US2337684A
Cited
US2414586A
Cited
US2432135A
Cited
US2389399A
Cited
US2420049A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |