Claims
- 1. In a power generation system comprising a coal-fired steam boiler and an original steam turbine system for receiving a steam flow from the coal-fired boiler, a method of retrofitting comprising the steps of:a) installing a hydrogen-fired combustion system to receive the steam flow, a hydrogen stream, and an oxygen stream, and to produce a super-heated steam flow therefrom; and b) installing a new steam turbine system capable of receiving and expanding said super-heated steam flow and directing said expanded super-heated steam flow to at least a portion of said original steam turbine system.
- 2. The retrofitting method of claim 1 wherein said installing said new steam turbine system step further comprises the step of replacing a high pressure section of the original steam turbine system with said new steam turbine system.
- 3. The retrofitting method of claim 1 further comprising the step of installing a condenser fume cleaning system for processing off-gases released by a condenser in the power generation system.
- 4. The retrofitting method of claim 1 further comprising the step of modifying an existing condenser fume cleaning system for processing off-gases released by a condenser in the power generation system to accommodate changes in the fully expanded steam flow as a result of combusting hydrogen.
- 5. A method to reduce pounds of pollutants/kW in emissions of a power generation system comprising a coal-fired steam boiler and an original steam turbine system for receiving a steam flow from the coal-fired boiler, comprising the steps of:a) retrofitting said power generation system by: i) installing a hydrogen-fired combustion system to receive the steam flow, a hydrogen stream, and an oxygen stream, and to produce a super-heated steam flow therefrom; and ii) installing a new steam turbine system capable of receiving and expanding said super-heated steam flow and directing said expanded super-heated steam flow to at least a portion of said original steam turbine system; and b) operating said retrofitted power generation system.
- 6. The method of claim 5 wherein said operating step comprises the step of generating a steam flow of approximately 1200° F. to 1600° F. by the hydrogen-fired combustion system.
CROSS-REFERENCE TO RELATED APPLICATION
This is a division of U.S. application Ser. No. 08/847,135 filed Apr. 30, 1997, now U.S. Pat. No. 6,021,569.
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Number |
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5666800 |
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5715671 |
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