Advanced Humid Air Gas Turbine System
First Claim
1. An advanced humid air gas turbine system comprising:
- a gas turbine system that includesa compressor for compressing air,a compressed air header for mixing high-pressure air introduced from the compressor with steam to generate humidified combustion air,a combustor for mixing combustion air from the compressed air header with fuel for sake of combustion so as to generate combustion gas, anda turbine driven by the combustion gas that is generated by the combustor;
a heat recovery steam generator for generating steam by use of exhaust gas from the turbine;
a water recovery system disposed on a downstream side of the heat recovery steam generator, the water recovery system recovering moisture contained in the exhaust gas;
a first steam system for supplying steam, coming from the heat recovery steam generator, to the compressed air header;
a second steam system for supplying steam, coming from the heat recovery steam generator, to the heat recovery steam generator or the water recovery system; and
a steam nozzle;
wherein when the gas turbine system is starting up, shut down, or subjected to load rejection, steam coming from the heat recovery steam generator is recovered by blocking the first steam system and making the second steam system communicate with the heat recovery steam generator; and
wherein the second steam system is coupled to said steam nozzle for jetting steam into an exhaust gas passage of the heat recovery steam generator.
2 Assignments
0 Petitions
Accused Products
Abstract
One of the objects of the invention is to provide a water-saving type advanced humid air gas turbine system (AHAT) that can decrease the amount of makeup water to be supplied from the outside, by reducing the amount of water consumed when the gas turbine system is starting up, shut down, or subjected to load rejection. The gas turbine system includes a compressor, the compressed air header for generating humidified combustion air, a combustor for generating combustion gas, and the turbine. When the gas turbine system is starting up, shut down or subjected to load rejection, steam coming from the heat recovery steam generator is recovered by blocking the first steam system and making the second steam system communicate with the heat recovery steam generator.
-
Citations
3 Claims
-
1. An advanced humid air gas turbine system comprising:
-
a gas turbine system that includes a compressor for compressing air, a compressed air header for mixing high-pressure air introduced from the compressor with steam to generate humidified combustion air, a combustor for mixing combustion air from the compressed air header with fuel for sake of combustion so as to generate combustion gas, and a turbine driven by the combustion gas that is generated by the combustor; a heat recovery steam generator for generating steam by use of exhaust gas from the turbine; a water recovery system disposed on a downstream side of the heat recovery steam generator, the water recovery system recovering moisture contained in the exhaust gas; a first steam system for supplying steam, coming from the heat recovery steam generator, to the compressed air header; a second steam system for supplying steam, coming from the heat recovery steam generator, to the heat recovery steam generator or the water recovery system; and a steam nozzle; wherein when the gas turbine system is starting up, shut down, or subjected to load rejection, steam coming from the heat recovery steam generator is recovered by blocking the first steam system and making the second steam system communicate with the heat recovery steam generator; and wherein the second steam system is coupled to said steam nozzle for jetting steam into an exhaust gas passage of the heat recovery steam generator.
-
-
2. An advanced humid air gas turbine system comprising:
-
a gas turbine system that includes a compressor for compressing air, a compressed air header for mixing high-pressure air introduced from the compressor with steam to generate humidified combustion air, a combustor for mixing combustion air from the compressed air header with fuel for sake of combustion so as to generate combustion gas, and a turbine driven by the combustion gas that is generated by the combustor; a heat recovery steam generator for generating steam by use of exhaust gas from the turbine; a water recovery system disposed on a downstream side of the heat recovery steam generator, the water recovery system recovering moisture contained in the exhaust gas; a first steam system for supplying steam, coming from the heat recovery steam generator, to the compressed air header; a second steam system for supplying steam, coming from the heat recovery steam generator, to the heat recovery steam generator or the water recovery system; and a steam nozzle; wherein when the gas turbine system is starting up, shut down, or subjected to load rejection, steam coming from the heat recovery steam generator is recovered by blocking the first steam system and making the second steam system communicate with the heat recovery steam generator; and wherein the second steam system is connected to said steam nozzle for jetting steam toward an inside of the water recovery system.
-
-
3. An advanced humid air gas turbine and cooler system comprising:
-
a gas turbine system that includes a compressor for compressing air, a compressed air header for mixing high-pressure air introduced from the compressor with steam to generate humidified combustion air, a combustor for mixing combustion air from the compressed air header with fuel for sake of combustion so as to generate combustion gas, and a turbine driven by the combustion gas that is generated by the combustor; a heat recovery steam generator for generating steam by use of exhaust gas from the turbine; a water recovery system disposed on a downstream side of the heat recovery steam generator, the water recovery system recovering moisture contained in the exhaust gas; a first steam system for supplying steam, coming from the heat recovery steam generator, to the compressed air header; a second steam system for supplying steam, coming from the heat recovery steam generator, to the heat recovery steam generator or the water recovery system; and a cooler located outside the advanced humid air gas turbine system; wherein the second steam system is connected to the cooler located outside the advanced humid air gas turbine system.
-
Specification