US4559007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel burning method in heating furnace
Assignee: Eneos Corp
•
Filing: 1981-11-04
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Granted: 1985-12-17
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Expires: 2001-11-04
Abstract
Abstract The concentration of nitrogen oxides contained in exhaust combustion gases is decreased by feeding into the combustion system within a heating furnace the combination of an ammonium compound and a phenol compound, the combination of Fluid Catalytic Cracking gasoline tank bottom water or water obtained after washing Fluid Catalytic Cracking gasoline and an ammonium compound, or FCC overhead condensate.
Inventors
- 👤 Mitsuo Hashimoto
- 👤 Yasuo Watanabe
- 👤 Fumio Mama
- 👤 Akinori Odan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:15
CPC Classifications
F; F23; F23J; F23J7/00; C; C10; C10L; C10L10/00; C10L10/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
104 words
In a fuel burning method in a heating furnace wherein a substance to be heated is heated at a temperature in the range of from 400° to 800° C. by feeding a liquid fuel and/or gaseous fuel to a burner mounted at the lower portion of the heating furnace and thereat burning the fuel with an abundant supply of oxygen, the improvement which comprises reducing the concentration of nitrogen oxides contained in the combustion gases exhausted from the furnace by feeding into the combustion system the combination of FCC gasoline tank bottom water or water obtained after washing FCC gasoline and an ammonium compound.
Claim 2
Dependent Claim
104 words
In a fuel burning method in a heating furnace wherein a substance to be heated is heated at a temperature in the range of from 400° to 800° C. by feeding a liquid fuel and/or gaseous fuel to a burner mounted at the lower portion of the heating furnace and thereat burning the fuel with an abundant supply of oxygen, the improvement which comprises reducing the concentration of nitrogen oxides contained in the combustion gases exhausted from the furnace by feeding into the combustion system the combination of FCC gasoline tank bottom water or water obtained after washing FCC gasoline and an ammonium compound.
Claim 3
Dependent Claim
94 words
In a fuel burning method in a heating furnace wherein a substance to be heated is heated at a temperature in the range of from 400° to 800° C. by feeding a liquid fuel and/or a gaseous fuel to a burner mounted at the lower portion of the heating furnace and thereat burning the fuel with an abundant supply of oxygen, the improvement which comprises reducing the concentration of nitrogen oxides contained in the combustion gases exhausted from the furnace by feeding into the combustion system the water portion of the FCC overhead condensate.
Claim 4
Dependent Claim
94 words
In a fuel burning method in a heating furnace wherein a substance to be heated is heated at a temperature in the range of from 400° to 800° C. by feeding a liquid fuel and/or a gaseous fuel to a burner mounted at the lower portion of the heating furnace and thereat burning the fuel with an abundant supply of oxygen, the improvement which comprises reducing the concentration of nitrogen oxides contained in the combustion gases exhausted from the furnace by feeding into the combustion system the water portion of the FCC overhead condensate.
Claim 5
Dependent Claim
101 words
In a fuel burning method in a heating furnace wherein a substance to be heated is heated at a temperature in the range of from 400° to 800° C. by feeding a liquid fuel and/or a gaseous fuel to a burner mounted at the lower portion of the heating furnace and thereat burning the fuel with an abundant supply of oxygen, the improvement which comprises reducing the concentration of nitrogen oxides contained in the combustion gases exhausted from the furnace by feeding into the combustion system the mixture of the water portion of the FCC overhead condensate and an ammonium compound.
Claim 6
Dependent Claim
101 words
In a fuel burning method in a heating furnace wherein a substance to be heated is heated at a temperature in the range of from 400° to 800° C. by feeding a liquid fuel and/or a gaseous fuel to a burner mounted at the lower portion of the heating furnace and thereat burning the fuel with an abundant supply of oxygen, the improvement which comprises reducing the concentration of nitrogen oxides contained in the combustion gases exhausted from the furnace by feeding into the combustion system the mixture of the water portion of the FCC overhead condensate and an ammonium compound.
References Cited (Backward Citations)
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US3826080A
Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-16 | 1989-06-17 | 1989-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-16 | 1993-06-17 | 1993-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-16 | 1997-06-17 | 1997-12-17 | $7700.00 | Window Closed / Lapsed |