Patent application number | Description | Published |
20090064656 | METHOD FOR OPERATING A COMBINED-CYCLE POWER PLANT, AND COMBINED-CYCLE POWER PLANT USEFUL FOR CARRYING OUT THE METHOD - A method involved operating a combined-cycle power plant ( | 03-12-2009 |
20110174240 | CONTROLLING VARIABLES IN BOILER PRESSURE VESSELS - A method of controlling stress in a boiler pressure vessel comprises limiting the diameter of a drum ( | 07-21-2011 |
20110302922 | POWER PLANT WITH CO2 CAPTURE - A method is provided for operating a combined cycle power plant including a CO | 12-15-2011 |
20120167546 | COMBINED-CYCLE POWER PLANT - A method involves operating a combined-cycle power plant ( | 07-05-2012 |
20120216547 | POWER PLANT FOR CO2 CAPTURE - An exemplary fossil fuel fired power plant is disclosed with minimum impact of the CO2 capture system on a power part of the plant. A power plant is disclosed which is ready for the retrofit of a CO2 capture plant, and a method is disclosed for retrofitting an existing plant into a power plant with CO2 capture. A power plant part is disclosed which can provide steam and power to operate CO2 capture system, and provide a CO2 capture system, which has the capacity to remove CO2 from flue gas flow of the power part, and of the additional power plant part. | 08-30-2012 |
20120227372 | POWER PLANT FOR CO2 CAPTURE - A power plant is provided including a steam power plant and/or a combined cycle power plant. A water steam cycle of the plant includes two steam turbine arrangements; the first turbine arrangement includes steam turbines with at least two pressure levels and a second turbine arrangement having at least one back pressure turbine configured to expand steam to the supply pressure of a CO2 capture system. A method for operating the plant includes operating the first steam turbine arrangement to produce power during all steady state operating points of the steam cycle and at least a part of the second steam turbine arrangement is bypassed to the system and/or is operated to produce power and to release low-pressure steam to the system when the system is in operation. Both steam turbine arrangements are operated using all available steam to produce power when the system is not in operation. | 09-13-2012 |
20120240871 | METHOD AND CONFIGURATION TO REDUCE FATIGUE IN STEAM DRUMS - A heat recovery steam generator that includes a first steam drum for receiving a flow of water and steam from an evaporator. The first steam drum is adapted to provide the flow of water and steam to a second steam drum. The second steam drum is in fluid communication with the first steam drum and receives the flow of water and steam from the first steam drum and separates steam from the flow of water and steam to form a separated steam. There is a steam flow outlet positioned in the second steam drum, the steam flow outlet adapted to release the separated steam from the second steam drum. | 09-27-2012 |
20130091845 | POWER PLANT AND METHOD FOR RETROFIT - A power plant includes a first gas turbine engine, a second gas turbine engine, a flue gas duct, a CO | 04-18-2013 |
20130227957 | METHOD FOR OPERATING A COMBINED-CYCLE POWER PLANT WITH COGENERATION, AND A COMBINED-CYCLE POWER PLANT FOR CARRYING OUT THE METHOD - The invention relates to a method for operation of a combined-cycle power plant with cogeneration, in which method combustion air is inducted in at least one gas turbine, is compressed and is supplied to at least one combustion chamber for combustion of a fuel, and the resultant exhaust gas is expanded in at least one turbine, producing work, and in which method the exhaust gas emerging from the at least one turbine is passed through a heat recovery steam generator in order to generate steam, which generator is part of a water-steam circuit with at least one steam turbine, a condenser, a feedwater tank and a feedwater pump, wherein heat is provided by extracting steam from the at least one steam turbine. In a method such as this, the electricity production is decoupled from the steam production in that in order to restrict the electricity production while the heat provided by means of steam extraction remains at a constant level, a portion of the inducted combustion air is passed through the at least one turbine to the heat recovery steam generator without being involved in the combustion of the fuel in the gas turbine, and in that this portion of the combustion air is used to operate at least one supplementary firing in the heat recovery steam generator. | 09-05-2013 |
20130227958 | METHOD FOR OPERATING A COMBINED-CYCLE POWER PLANT WITH COGENERATION, AND A COMBINED-CYCLE POWER PLANT FOR CARRYING OUT THE METHOD - The invention relates to a method for operating a combined-cycle power plant with cogeneration, in which method combustion air is inducted in at least one gas turbine, is compressed and is fed to at least one combustion chamber for combustion of a fuel, and the resultant exhaust gas is expanded in at least one turbine producing work, and in which method the exhaust gas which emerges from the at least one turbine is fed through a heat recovery steam generator in order to generate steam, which heat recovery steam generator is part of a water-steam circuit with at least one steam turbine, a condenser, a feedwater tank and a feedwater pump, wherein heat is produced by extraction of steam from the at least one steam turbine. In a method such as this, simple decoupling of heat and electricity production, which is advantageous for operation, is achieved in that the steam can be selectively extracted from the at least one steam turbine as low-pressure steam or intermediate-pressure steam, and in that the steam extraction is switched from low-pressure steam to intermediate-pressure steam in order to restrict the electricity production. | 09-05-2013 |
20130269346 | COMBINED CYCLE POWER PLANT WITH CO2 CAPTURE AND METHOD TO OPERATE IT - A combined cycle power plant with a gas turbine, steam turbine, and first HRSG comprises a CO2 capture plant for the at least partial capture of CO2 from the exhaust gases from the gas turbine. It comprises in particular a second HRSG or boiler arranged to receive a portion of the exhaust gases and transfer its heat to steam and feedwater. Steam generated in the second HRSG or boiler is used for the operation of the CO2 capture plant and/or to operate a steam turbine that drives a generator and optionally a CO2 compressor. The power plant according to the invention allows for greater flexibility in power plant part load control and power plant efficiency. A method to operate the power plant is also claimed. | 10-17-2013 |
20150082803 | METHOD FOR OPERATING A COMBINED-CYCLE POWER PLANT WITH COGENERATION, AND A COMBINED-CYCLE POWER PLANT FOR CARRYING OUT THE METHOD - The invention relates to a method for operation of a combined-cycle power plant with cogeneration, in which method combustion air is inducted in at least one gas turbine, and in which method the exhaust gas emerging from the at least one turbine is passed through a heat recovery steam generator (HRSG) in order to generate steam. The electricity production can be decoupled from the steam production in order to restrict the electricity production while the heat provided by steam extraction remains at a constant level. A portion of the inducted combustion air can be passed through at least one turbine to the HRSG without being involved in the combustion of the fuel in the gas turbine. This portion of the combustion air can be used to operate at least one supplementary firing in the heat recovery steam generator. | 03-26-2015 |