US3369504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boiler operation process to prevent air pollution
Assignee: Individual
•
Filing: 1965-02-23
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Granted: 1968-02-20
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Expires: 1985-02-23
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Oster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:01
CPC Classifications
F; F23; F23J; F23J7/00; B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/50; B01D53/501; C; C01; C01B; C01B7/00; C01B7/01; C01B7/03; C01D; C01D5/00; C01D5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A PROCESS FOR DIMINISHING THE EMISSION OF SULPHUR DIODE FROM BOILERS DURING THE BURNING OF SULPHUR CONTAINING FUEL COMPRISING INJECTING SODIUM CHLORIDE INTO THE GAS STREAM THROUGH THE BOILER AT A LOCATION WHICH WILL RESULT IN THE VAPORIZATION OF A SUBSTANTIAL PORTION OF THE SODIUM CHLORIDE, REGULATING THE FUEL TO AIR RATIO OF THE BOILER SO THAT SUFFICIENT EXCESS AIR IS PRESENT TO OXIDIZE THE SULPHUR DIOXIDE NORMALLY FORMED TO SULPHUR TRIOXIDE, PERMITTING THE SULPHUR TRIOXIDE TO REACT AS IT IS FORMED WITH SODIUM CHLORIDE TO FORM SODIUM SULPHATE AND HYDROGEN CHLORIDE FROM THE BOILER STREAM.
Claim 2
Dependent Claim
96 words
A PROCESS FOR DIMINISHING THE EMISSION OF SULPHUR DIODE FROM BOILERS DURING THE BURNING OF SULPHUR CONTAINING FUEL COMPRISING INJECTING SODIUM CHLORIDE INTO THE GAS STREAM THROUGH THE BOILER AT A LOCATION WHICH WILL RESULT IN THE VAPORIZATION OF A SUBSTANTIAL PORTION OF THE SODIUM CHLORIDE, REGULATING THE FUEL TO AIR RATIO OF THE BOILER SO THAT SUFFICIENT EXCESS AIR IS PRESENT TO OXIDIZE THE SULPHUR DIOXIDE NORMALLY FORMED TO SULPHUR TRIOXIDE, PERMITTING THE SULPHUR TRIOXIDE TO REACT AS IT IS FORMED WITH SODIUM CHLORIDE TO FORM SODIUM SULPHATE AND HYDROGEN CHLORIDE FROM THE BOILER STREAM.
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) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |