Patent application number | Description | Published |
20100242430 | COMBINED CYCLE POWER PLANT INCLUDING A HEAT RECOVERY STEAM GENERATOR - A combined cycle power plant includes a gas turbomachine, a steam turbomachine operatively coupled to the gas turbomachine, and a heat recovery steam generator operatively coupled to the gas turbomachine and the steam turbomachine. The heat recovery steam generator includes a high pressure reheat section provided with at least one high pressure superheater and at least one reheater. The combined cycle power plant further includes a controller operatively connected to the gas turbomachine, the steam turbomachine and the heat recovery steam generator. The controller is selectively activated to initiate a flow of steam through the heat recovery steam generator following shutdown of the gas turbomachine to lower a temperature of at least one of the high pressure superheater and the at least one reheater and reduce development of condensate quench effects during HRSG purge of a combined cycle power plant shutdown. | 09-30-2010 |
20110030331 | Ammonia Injection System - In one embodiment, a system includes an emissions reduction system including a compressor in fluid communication with a catalyst mixing tank. The compressor is configured to output an air flow configured to deliver catalyst from the catalyst mixing tank to a catalyst injection grid. A temperature of the air flow is increased by the compressor. | 02-10-2011 |
20110185744 | METHOD AND APPARATUS FOR COMBINED CYCLE POWER PLANT STARTUP - A combined cycle power plant startup system is provided. The system includes a steam turbine, a HRSG, a condenser, and a bypass system. The steam turbine may include a turbine section. The HRSG may be operably connected to the steam turbine for providing steam to the steam turbine. The HRSG may include a reheater. The bypass system may be configured to adjust the steam pressure downstream of the reheater by routing steam downstream of the reheater to the condenser. The bypass system may include at least one bypass line, at least one control valve operably connected to the at least one bypass line, a pressure gauge configured to monitor the steam pressure downstream of the reheater, and a controller configured to communicate with the pressure gauge and operate the at least one control valve. | 08-04-2011 |
20120036828 | Combined Cycle Power Plant Including a Heat Recovery Steam Generator - A combined cycle power plant includes a gas turbomachine, a steam turbomachine operatively coupled to the gas turbomachine, and a heat recovery steam generator operatively coupled to the gas turbomachine and the steam turbomachine. The heat recovery steam generator includes a high pressure reheat section provided with at least one high pressure superheater and at least one reheater. The combined cycle power plant further includes a controller operatively connected to the gas turbomachine, the steam turbomachine and the heat recovery steam generator. The controller is selectively activated to initiate a flow of steam through the heat recovery steam generator following shutdown of the gas turbomachine to lower a temperature of at least one of the high pressure superheater and the at least one reheater and reduce development of condensate quench effects during HRSG purge of a combined cycle power plant shutdown. | 02-16-2012 |
20140069078 | Combined Cycle System with a Water Turbine - The present application and the resultant patent provide a combined cycle system with a flow of feed water therein. The combined cycle system may include a gas turbine, a steam turbine, a heat exchanger with the flow of feed water flowing therethrough, an expansion source for expanding the flow of feed water, and a supplemental power generation system positioned between the heat exchanger and the expansion source and driven by the flow of feed water. | 03-13-2014 |
20140102071 | SYSTEM AND METHOD FOR HEATING FUEL IN A COMBINED CYCLE GAS TURBINE - A system for heating fuel in a combined cycle gas turbine includes a fuel heat exchanger downstream from a turbine outlet, and the fuel heat exchanger has an exhaust gas inlet, an exhaust gas outlet, a fuel inlet, and a fuel outlet. A first exhaust gas plenum has a first exhaust gas inlet connection between the turbine outlet and a heat exchanger and a first exhaust gas outlet connection upstream from the exhaust gas inlet. A second exhaust gas plenum has a second exhaust gas inlet connection downstream from at least a portion of the heat exchanger and a second exhaust gas outlet connection upstream from the exhaust gas inlet. | 04-17-2014 |
20150300261 | FUEL HEATING SYSTEM FOR USE WITH A COMBINED CYCLE GAS TURBINE - A fuel heating system for use with a combined cycle gas turbine including a turbine outlet configured to channel a flow of exhaust gas towards a heat recovery steam generator is provided. The system includes a heat exchanger configured to channel a flow of fuel therethrough, and a plurality of heat transfer devices that each include an evaporator portion in thermal communication with the flow of exhaust gas and a condenser portion selectively thermally exposed to the flow of fuel. Each of the plurality of heat transfer devices are configured to conduct different grade heat from the exhaust gas to regulate a temperature of the fuel. | 10-22-2015 |
20150321155 | FUEL DELIVERY SYSTEM AND METHOD OF OPERATING A POWER GENERATION SYSTEM - A fuel delivery system is provided. The system includes a natural gas reformer configured to receive a flow of natural gas and a flow of air. The natural gas reformer combines the natural gas and the air in a reaction to produce a flow of reformate gas. The system also includes a mixing device coupled downstream from the natural gas reformer. The mixing device is configured to selectively mix amounts of the reformate gas, vaporized liquid fuel, and natural gas to produce a flow of mixed product fuel having predetermined operating parameters. | 11-12-2015 |