초록 ▼

Hydrogen is used as the fuel source in a gas turbine combined cycle power plant. The hydrogen may be combusted in either a mixture of compressed air and steam or a mixture of pure oxygen and steam. In either case, the work of compression associated with pressurizing the oxidant for the combustion pr

Hydrogen is used as the fuel source in a gas turbine combined cycle power plant. The hydrogen may be combusted in either a mixture of compressed air and steam or a mixture of pure oxygen and steam. In either case, the work of compression associated with pressurizing the oxidant for the combustion process is considerably reduced since steam, rather than excess air, is used to moderate combustion temperature, as well as to cool the turbine components. The steam is produced by transferring heat from the turbine exhaust gas to feed water. Since no hydrocarbon fuel is used, fuel bound NOx is eliminated. Moreover, if pure oxygen is used, rather than air, for the combustion of the hydrogen, then the only emission from the power plant is water vapor, which may be condensed and returned to the cycle.

대표청구항 ▼

[ We claim:] [1.] A method of generating rotating shaft power, comprising the steps of:a) introducing a flow of fuel consisting essentially of pure pressurized hydrogen into a combustion zone formed in a combustor by directing said flow of pressurized hydrogen into said combustor at a first location

[ We claim:] [1.] A method of generating rotating shaft power, comprising the steps of:a) introducing a flow of fuel consisting essentially of pure pressurized hydrogen into a combustion zone formed in a combustor by directing said flow of pressurized hydrogen into said combustor at a first location therein;b) mixing a first flow of steam into a flow of a pressurized oxygen bearing fluid so as to produce a flow of moist pressurized oxygen bearing fluid;c) introducing at least a first portion of said flow of moist pressurized oxygen bearing fluid into said combustion zone by directing said flow of moist pressurized oxygen bearing fluid into said combustor through a first annular passage thereof encircling said first location;d) mixing said flow of pressurized hydrogen and said flow of moist pressurized oxygen bearing fluid in said combustion zone so as to produce a combustible mixture;e) combusting said combustible mixture, thereby producing a flow of hot moist pressurized gas;f) expanding said flow of hot moist pressurized gas in a first turbine having a rotating shaft so as to produce a flow of hot moist expanded gas and shaft power; andg) transferring heat from said flow of hot moist expanded gas to a flow of feed water so as to generate steam, at least a first portion of said generated steam forming said first flow of steam used to produce said flow of moist pressurized oxygen bearing fluid.