Claims
- 1. A process for the production of electric power with a biogas used as a fuel for an electric power producing combustion turbine which drives a generator, which turbine will accept such a biogas only at a temperature below a predetermined temperature, wherein a biomass is gasified to produce a hot stream of a biogas, said biogas being at temperatures of between about 650.degree.-875.degree. C. and containing vaporized tar components and solid particulate matter, characterized in that:
- said hot stream of biogas, consisting essentially of a biogas, vaporized tars and solid particulate matter, has water injected thereto to partially cool the biogas to a temperature below said predetermined temperature by vaporization of said water, but above a temperature at which said vaporized tars in said biogas would condense out of said stream;
- filtering said partially cooled biogas to remove said particulate matter; and
- directly charging said partially cooled, filtered biogas containing said vaporized water and vaporized tars to an electric power producing combustion turbine to produce electric power.
- 2. In a process for the production of electric power as defined in claim 1, the improvement wherein said hot stream of biogas is cooled by said water injected thereto to a temperature of between 260.degree.-550.degree. C.
- 3. In a process for the production of electric power as defined in claim 2, the improvement wherein said partially cooled biogas is filtered by passing the same through a filter unit containing ceramic filters.
- 4. In a process for the production of electric power as defined in claim 2, the improvement wherein said partially cooled biogas is filtered by passing the same through a filter unit containing porous metallic filters.
- 5. In a process for the production of electric power as defined in claim 2, the improvement wherein said partially cooled biogas is filtered by passing the same through a filter unit containing high temperature bag filters.
- 6. In a process for the production of electric power as defined in claim 2, the improvement wherein said hot stream of biogas is at a pressure of about 200-300 pounds per square inch at the time of injection thereto of said water.
- 7. A process for the production of electric power with a biogas used as a fuel for an electric power producing combustion turbine which drives a generator, which turbine will accept such a biogas only at a temperature below a predetermined temperature, wherein a biomass is gasified to produce a hot stream of a biogas, said biogas being at temperatures of between about 650.degree.-875.degree. C. and containing tar components and solid particulate matter, characterized in that:
- said hot stream of biogas has water injected thereto to partially cool the biogas to a temperature below said predetermined temperature by vaporization of said water, but above a temperature at which tars in said biogas would condense out of said stream;
- filtering said partially cooled biogas to remove said particulate matter;
- injecting into at least a portion of said partially cooled, filtered biogas a supplementary spray of water to further partially cool said portion of said partially cooled, filtered biogas; and
- directly charging said partially cooled, filtered biogas to an electric power producing combustion turbine to produce electric power.
Parent Case Info
This application is a continuation of application Ser. No. 668,591 filed Nov. 5, 1984, now abandoned.
US Referenced Citations (7)
Continuations (1)
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Number |
Date |
Country |
Parent |
668591 |
Nov 1984 |
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