초록 ▼

A power plant that combusts hydrogen with oxygen in a high pressure combustor to produce steam, which is mixed with cooling steam before being sent to a high pressure expander, which expands the steam and generates rotating shaft power. The expanded steam is mixed with steam from the combustion of h

A power plant that combusts hydrogen with oxygen in a high pressure combustor to produce steam, which is mixed with cooling steam before being sent to a high pressure expander, which expands the steam and generates rotating shaft power. The expanded steam is mixed with steam from the combustion of hydrogen and oxygen in an intermediate pressure combustor and expanded in an intermediate pressure turbine, thus generating more rotating shaft power. The steam from the intermediate pressure turbine is fed into a heat recovery steam generator that cools the steam and heats water streams to form cooling steam for at least one of the turbines and the combustors. The now cooled steam exits the steam generator and passes through a low pressure turbine, thereby generating more rotating shaft power, and is condensed into the water streams for heating into cooling steam in the steam generator.

대표청구항 ▼

[ We claim:] [1.] A method of generating rotating shaft power, comprising the steps of:a) feeding a first flow of cooling steam, a first flow of hydrogen, and a first flow of oxygen into a high pressure combustor;b) combusting the first flows of hydrogen and oxygen into high pressure steam and mixin

[ We claim:] [1.] A method of generating rotating shaft power, comprising the steps of:a) feeding a first flow of cooling steam, a first flow of hydrogen, and a first flow of oxygen into a high pressure combustor;b) combusting the first flows of hydrogen and oxygen into high pressure steam and mixing the high pressure steam with the first flow of cooling steam in the high pressure combustor to produce a first flow of process steam;c) expanding the first flow of process steam in a high pressure turbine to produce shaft power and a second flow of process steam;d) feeding the second flow of process steam, a second flow of hydrogen, and a second flow of oxygen into an intermediate pressure combustor;e) combusting the second flows of hydrogen and oxygen into steam and mixing the steam with the second flow of process steam in the intermediate pressure combustor to produce a third flow of process steam;f) expanding the third flow of process steam in an intermediate pressure turbine to produce shaft power and a fourth flow of process steam;g) cooling the fourth flow of process steam in a heat recovery steam generator to produce a fifth flow of process steam;h) expanding the fifth flow of process steam in a low pressure turbine to produce shaft power and a sixth flow of process steam;i) condensing the sixth flow of process steam in a condenser to produce a feedwater stream;j) feeding a first portion and a second portion of the feedwater stream to a high pressure feedwater pump and a low pressure feedwater pump, respectively, to produce a high pressure water stream and a low pressure water stream, respectively;k) pumping the high pressure water stream from the high pressure feedwater pump into the heat recovery steam generator to produce the first flow of cooling steam;l) pumping the low pressure water stream from the low pressure feedwater pump into the heat recovery steam generator to produce the second flow of cooling steam;m) cooling the intermediate pressure turbine with the second flow of cooling steam; andn) bleeding off of an excess portion of the feedwater stream.