US3779212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-polluting steam generator system
Assignee: Boeing North American Inc
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Filing: 1972-05-12
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Granted: 1973-12-18
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Expires: 1992-05-12
Abstract
Abstract A steam generating system comprising burning fuel which contains no sulphur or nitrogen in an atmosphere of pure oxygen to heat water in a heat exchanger for converting water to steam. Preferably, the fuel and oxygen are provided in liquid or gaseous form and are supplied under pressure to the combustion chamber, to provide more rapid combustion, and additional oxygen may be added to the burning gases as they are passed to the heat exchanger to further increase the temperature of the flame. In addition, the water to be converted into steam is maintained isolated from the products of combustion. Both method and apparatus are disclosed.
Inventors
- 👤 W Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:28
CPC Classifications
F; F22; F22B; F22B31/00; Y; Y02; Y02E; Y02E20/00; Y02E20/34
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
131 words
A steam generating system comprising: a source of an oxidizer containing no nitrogen, a source of fuel containing no appreciable sulfur or nitrogen, a combustion chamber, a closed delivery system connected to deliver said oxidizer and said fuel to said combustion chamber under pressure, a heat exchanger connected to receive heat from said combustion chamber on one side of a heat exchanger wall, a source of water connected to supply water to an opposite side of said heat exchanger wall in heat exchanging relation to said combustion chamber heat, said heat exchanger having a ratio of the gas passage length to the hydraulic diameter on the gas side greater than 100, and output means for delivering steam resultant from vaporization of said water from said heat exchanger to a utilizing device.
Claim 2
Dependent Claim
131 words
A steam generating system comprising: a source of an oxidizer containing no nitrogen, a source of fuel containing no appreciable sulfur or nitrogen, a combustion chamber, a closed delivery system connected to deliver said oxidizer and said fuel to said combustion chamber under pressure, a heat exchanger connected to receive heat from said combustion chamber on one side of a heat exchanger wall, a source of water connected to supply water to an opposite side of said heat exchanger wall in heat exchanging relation to said combustion chamber heat, said heat exchanger having a ratio of the gas passage length to the hydraulic diameter on the gas side greater than 100, and output means for delivering steam resultant from vaporization of said water from said heat exchanger to a utilizing device.
Claim 3
Dependent Claim
10 words
The system of claim 1 wherein said oxidizer is oxygen.
Claim 4
Dependent Claim
16 words
The system of claim 1 wherein said oxidizer is stored in said source in liquid form.
Claim 5
Dependent Claim
12 words
The system of claim 1 wherein said fuel is a hydrocarbon fuel.
Claim 6
Dependent Claim
16 words
The system of claim 1 wherein said fuel is stored in said source in liquid form.
Claim 7
Dependent Claim
11 words
The system of claim 1 wherein said fuel is natural gas.
Claim 8
Dependent Claim
31 words
The system of claim 1 further comprising: delivery means connected to deliver additional oxidizer adjacent said one side of the heat exchanger wall, together with combustion products from said combustion chamber.
Claim 9
Independent Claim
75 words
The method of generating steam comprising the steps of: burning a fuel containing no appreciable sulfur or nitrogen in a pressurized oxidizing atmosphere containing no nitrogen to produce heat, and passing said heat in heat exchanging relation with water to convert said water to steam while maintaining said water isolated from the products of combustion and maintaining the ratio of the gas passage length to the hydraulic diameter on the gas side greater than 100.
Claim 10
Independent Claim
75 words
The method of generating steam comprising the steps of: burning a fuel containing no appreciable sulfur or nitrogen in a pressurized oxidizing atmosphere containing no nitrogen to produce heat, and passing said heat in heat exchanging relation with water to convert said water to steam while maintaining said water isolated from the products of combustion and maintaining the ratio of the gas passage length to the hydraulic diameter on the gas side greater than 100.
Claim 11
Dependent Claim
12 words
The method of claim 8 wherein said fuel is a hydrocarbon fuel.
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) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |