Patent US3661534A successfully refreshed from Google Patents.
US3661534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for sulfur recovery
Assignee: Zinklahoma Inc
•
Filing: 1970-06-15
•
Granted: 1972-05-09
•
Expires: 1990-06-15
Abstract
Abstract Apparatus is provided for burning sulfur which combines a jacketed pipe and a nozzle for spraying sulfur at a controlled temperature in a first chamber, a second chamber where the sulfur is burned downstream from the nozzle and a third chamber where the combustion product is mixed with acid gas to provide a mixture of gases suitable for transfer to a Claus reactor.
Inventors
- 👤 Robert D Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:48
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/02; C01B17/04; C01B17/0404; C01B17/0413; C01B17/0417
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
The apparatus of claim 1 wherein a plurality of circumferentially spaced fuel gas burners are disposed adjacent the spray nozzle.
Claim 2
Dependent Claim
28 words
The apparatus of claim 1 wherein the means for supplying heat to the said casing is a fuel gas burner which discharges its combustion products into the casing.
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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |