| 摘要 |
Method for power generation through combustion of gaseous fuels in a thermal power generation cycle with a gas turbine as principal machine. Working medium in the gas turbine is the mixture of water vapor and carbon dioxide produced through combustion of the fuel gas with oxygen in the gas turbine's combustor, said combustor being supplied with, partly the flow of steam produced in a steam generator connected to the turbine's exhaust outlet and partly a part flow of the flue gas from said steam generator after compression under direct or indirect cooling in the gas turbine's compressor. The balance of flue gas from the steam generator is utilized for production of hot-water in a scrubber, said hot-water being utilized, partly as feed water to the steam generator, partly as cooling medium for direct cooling through atomization in the recirculated part flow of flue gas from the steam generator, partly for preheating of fuel gas and oxygen. The method, which can utilize all gaseous fuels, gives for instance with natural gas a high total efficiency power/fuel (55 %), whereby the only by-products are moist carbon dioxide with a low content of oxygen and water vapour useful for production of liquid carbon dioxide and hot-water, for instance useful for selective heating purposes. |
