Patent US3561405A successfully refreshed from Google Patents.
US3561405A
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Secondary fuel system for a supplementary fired heat recovery steam generator
Assignee: General Electric Co
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Filing: 1969-02-04
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Granted: 1971-02-09
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Expires: 1989-02-04
Abstract
Abstract A supplementary-fired heat recovery steam generator having a secondary source of liquid fuel and where superheated steam from the steam generator, or an external source, is used to vaporize the liquid fuel which has been atomized in a vaporization chamber.
Inventors
- 👤 Salvatore S Tramuta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:17
CPC Classifications
F; F22; F22B; F22B1/00; F22B1/02; F22B1/18; F22B1/1861
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
99 words
In a supplementary-fired heat recovery stEam generator system of the type comprising a burner adapted to utilize gaseous fuel, a superheater, and an evaporator disposed in the path of hot combustion-supporting exhaust gases, the improvement comprising: a primary source of gaseous fuel communicating with said burner; a vaporizing chamber communicating with said burner; a secondary source of liquid fuel communicating with said vaporizing chamber; a bleeder steam line from said superheater communicating with said vaporizing chamber, thereby providing a source of high temperature steam to vaporize the liquid fuel; and means to preheat said secondary source of liquid fuel.
Claim 2
Dependent Claim
99 words
In a supplementary-fired heat recovery stEam generator system of the type comprising a burner adapted to utilize gaseous fuel, a superheater, and an evaporator disposed in the path of hot combustion-supporting exhaust gases, the improvement comprising: a primary source of gaseous fuel communicating with said burner; a vaporizing chamber communicating with said burner; a secondary source of liquid fuel communicating with said vaporizing chamber; a bleeder steam line from said superheater communicating with said vaporizing chamber, thereby providing a source of high temperature steam to vaporize the liquid fuel; and means to preheat said secondary source of liquid fuel.
Claim 3
Dependent Claim
42 words
A heat recovery steam generator of the type as defined in claim 1 where said vaporizing chamber contains a perforated pipe connected to said secondary fuel source and disposed coaxially within said chamber in order to atomize the liquid fuel under pressure.
References Cited (Backward Citations)
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US3443550A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |