Class / Patent application number | Description | Number of patent applications / Date published |
060775000 | Introducing water or steam | 79 |
20080229755 | HUMID AIR TURBINE, HUMID AIR TURBINE CONTROL SYSTEM, AND HUMID AIR TURBINE CONTROL METHOD - The present invention provides a humid air turbine having a compressor, a humidificator for generating humid air by adding moisture to compressed air supplied from the compressor, a combustor, a turbine, a recuperator for effecting heat exchange between exhaust from the turbine and the humid air, an economizer for effecting heat exchange between exhaust from the recuperator and water, and a system for supplying the water heated by the economizer to the humidificator. The humid air turbine includes a temperature measurement device for measuring the temperature of gas discharged from the economizer, and a control device for adjusting the amount of moisture to be supplied to the humidificator in accordance with a temperature signal from the temperature measurement device. The present invention assures low NOx of combustor and flame stability before and after water addition to the humid air turbine. | 09-25-2008 |
20080236168 | OPERATING METHOD FOR A TURBOGROUP - The invention relates to a method for operating a turbogroup, especially of a power generating plant,
| 10-02-2008 |
20080271460 | METHODS AND SYSTEMS FOR GAS MOISTURIZATION CONTROL - Methods and systems for a gas moisturizing system are provided. The system includes a plurality of gas sources configured to supply a flow of gas to a plurality of gas loads, a single gas moisturizer coupled in flow communication to the plurality of gas sources and the plurality of gas loads wherein the single gas moisturizer is configured to supply a flow of gas having a predetermined moisture content to the plurality of gas loads, and a control system configured to maintain the predetermined moisture content. | 11-06-2008 |
20080295520 | Dynamic control system to implement homogenous mixing of diluent and fuel to enable gas turbine combustion systems to reach and maintain low emission levels - System, methods and apparatus for dynamic control of mixing of diluent and fuel at desired diluent-to-fuel ratios to obtain low level of undesirable emissions in a combustion system are described. | 12-04-2008 |
20090038313 | METHOD AND APPARATUS FOR SUPPLYING PRESSURE FOR SPRAY INLET TEMPERATURE SUPPRESSOR OF GAS TURBINES - An apparatus for supplying water to a misting system for an inlet of a gas turbine, includes a diversion of heated feedwater from a loop and to a pump, the pump providing high-pressure feedwater to the misting system. A combined cycle power plant and a method for supplying water are provided. | 02-12-2009 |
20090071166 | THERMODYNAMIC CYCLES USING THERMAL DILUENT - A thermodynamic system that produces mechanical, electrical power, and/or fluid streams for heating or cooling. The cycle contains a combustion system that produces an energetic fluid by combustion of a fuel with an oxidant. A thermal diluent may be used in the cycle to improve performance, including but not limited to power, efficiency, economics, emissions, dynamic and off-peak load performance, and/or turbine inlet temperature (TIT) regulation and cooling heated components. The cycle preferably includes a heat recovery system and a condenser or other means to recover and recycle heat and the thermal diluent from the energetic fluid to improve the cycle thermodynamic efficiency and reduce energy conversion costs. The cycle may also include controls for temperatures, pressures, and flow rates throughout the cycle, and controls power output, efficiency, and energetic fluid composition. | 03-19-2009 |
20090158746 | Method of Regulation of the Temperature of Hot Gas of a Gas Turbine - The invention relates to a method of regulation of the temperature of a hot gas of a gas turbine, particularly of a stationary gas turbine used for generating electricity, which comprises injecting a liquid into an airflow, which can be drawn into a compressor and with the aid of which a fuel inside a combustion chamber, which is situated downstream, combusts while producing the hot gas that is subsequently expanded when flowing through the turbine part located downstream. A temperature measuring device is provided that measures the temperature of the airflow before the compressor, whereby the temperature of the hot gas is regulated by the quantity of fuel. The aim of the invention is to provide a regulation with which, during wet compression operation, the serviceable life of the components subjected to the action of hot gas is lengthened. To this end, the invention provides that the temperature measuring device is mounted before the injecting device, and that the temperature of the airflow is calculated at the entry of the compressor by using the measured temperature | 06-25-2009 |
20090205340 | METHOD AND APPARATUS FOR ACHIEVING POWER AUGMENTATION IN GAS TURBINES USING WET COMPRESSION - A gas turbine unit as well as a method for operating a gas turbine with high-pressure turbine and a low-pressure turbine unit are disclosed. A very quick and at the same time easily controllable augmentation or reduction of the shaft power of the gas turbine unit can be achieved by providing at least one liquid droplet injection device on the upstream side of said compressor for injecting liquid into the stream of intake air in order to increase the shaft power generated by the gas turbine unit. The amount of water mass flow corresponding to the desired increase or decrease of shaft power output of the gas turbine unit is added or reduced in the form of liquid droplets in a substantially stepless manner and immediately within a time interval that is determined by the design characteristics of the liquid droplet injection device. | 08-20-2009 |
20090277184 | TURBOMACHINE AND A METHOD FOR ENHANCING POWER EFFICIENCY IN A TURBOMACHINE - A turbomachine includes a compressor portion that generates a cooling airflow. The compressor portion includes a plurality of compressor stages. The turbomachine further includes a turbine portion operatively connected to the compressor portion. The turbine portion includes a plurality of turbine stages. A conduit fluidly connects at least one of the plurality of compressor stages with at least one of the plurality of turbine stages and delivers a portion of the cooling airflow from the compressor portion to the turbine portion. An injector port is connected to the conduit and a secondary fluid generation system. The secondary fluid generation system delivers an amount of dry secondary fluid into the cooling airflow passing from the compressor portion to the turbine portion. The amount of dry secondary fluid replaces a portion of the cooling airflow passing to the turbine portion. | 11-12-2009 |
20090293493 | ADVANCED HUMID AIR TURBINE POWER PLANT - An advanced humid air turbine power plant capable of suppressing condensation of moisture in a cooling channel, which is provided to cool a high-temperature component of a gas turbine, in a start up stage, a coast down stage, and a load varying state of the gas turbine. In the advanced humid air turbine power plant comprising a compressed air supply line for supplying compressed air generated by a compressor to the high-temperature component of the gas turbine, and a humidified air supply line for supplying humidified air generated in a humidifying tower to the high-temperature component of the gas turbine, the power plant further comprises valves capable of adjusting respective air flow rates in the compressed air supply line and the humidified air supply line. A coolant is switched over from the compressed air to the humidified air in the start up stage and the load increasing stage of the gas turbine, and from the humidified air to the compressed air in the load decreasing stage and the coast down stage, as well as in the event of an abnormality in a humidifying line. | 12-03-2009 |
20090301098 | Method, device and system for efficeint energy transformation - Method for efficient energy transformation by means of a gaseous medium comprising steam, said steam being produced from a first fluid medium, energy for heating the first fluid medium being provided by burning a fuel, comprising the steps of: mixing the steam with exhaust gas from combustion of said fuel; introducing said mixture into a cavity; and bringing said steam and exhaust gas mixture into contact with a cold second fluid medium within said cavity such that a supersonic shock wave is created. The invention also relates to a device and a system for efficient energy transformation by means of a gaseous medium comprising steam. | 12-10-2009 |
20090301099 | Power Generation - A method and an apparatus for generating power via a gas turbine are disclosed. Coal bed methane and/or natural gas, air or oxygen-enriched air, and steam are supplied to a combustor of the gas turbine. Coal bed methane and/or natural gas is combusted and resultant combustion products and a flue gas drive the gas turbine and generate electricity. A hot flue gas stream from the gas turbine is supplied to a heat recovery steam generator (“HRSG”) and the generator produces high pressure steam and low pressure steam. High pressure steam is supplied to the combustor of the gas turbine. CO | 12-10-2009 |
20090320494 | Hydrogen gas generator for jet engines - A hydrogen gas generator for jet engines includes a device that utilizes photons and a catalyst to disassociate hydrogen gas from water. The generated hydrogen gas is directed to the combustion chamber of a jet engine and combined with air therein for burning and powering the jet engine. The device is connected to a source of electric energy and pressurized water. The electric energy is supplied to an anode and a surrounding cathode. The cathode is designed to glow white-hot and emit photons and heat when an electric current is supplied thereto. The anode is fabricated from a catalytic material and is designed to become red-hot when supplied with electric energy. Water is supplied through a conduit and is converted to superheated steam, which is thermolytically decomposed to form hydrogen and oxygen. | 12-31-2009 |
20100146984 | Gas turbine with water injection - Reliable, low-NOx-emission operation of a gas turbine plant with hydrogen-rich fuel gas, and a gas turbine plant with a device for water injection into hydrogen-rich fuels in a gas turbine, involves suitable water injection ( | 06-17-2010 |
20100154430 | SYSTEM AND METHOD FOR OPERATING A GAS TURBINE USING VANADIUM-CONTAINING FUELS - A method of operating a gas turbine that utilizes vanadium-containing fuels at a combustion stage of the turbine thereby producing a combustion product having vanadium gaseous species, the method comprising increasing the volatility of the vanadium gaseous species in the combustion product atmosphere generated in a combustor of the turbine by increasing concentration of water vapor in the combustion product. | 06-24-2010 |
20100242490 | ADDITIVE DELIVERY SYSTEMS AND METHODS - Methods and systems are provided for delivering an additive to a turbine combustor. In one embodiment, a water injection system directs water through a water passage to a turbine combustor at a flow rate that is variable to achieve a first control function. An additive delivery system directs an amount of an additive through the water passage to the combustor to achieve a second control function. The amount of the additive is variable based on the flow rate of the water, and the first and second control functions are different from one another. | 09-30-2010 |
20100269516 | METHOD FOR OPERATING A GAS TURBINE INSTALLATION AND EQUIPMENT FOR CARRYING OUT THE METHOD - A method is provided for operating a gas turbine installation which has at least one compressor for compressing combustion air, at least one combustion chamber for combusting a supplied fuel, using the compressed combustion air, and also at least one turbine which is exposed to throughflow by the hot gases from the at least one combustion chamber. Both a first fuel on a carbon base, especially in the form of natural gas, and also a second fuel, in the form of a hydrogen-rich fuel or pure hydrogen, are used as fuel. A reduction of the CO | 10-28-2010 |
20100326083 | SPRAY SYSTEM, POWER AUGMENTATION SYSTEM FOR ENGINE CONTAINING SPRAY SYSTEM AND METHOD OF HUMIDIFYING AIR - The present invention is spray system such as a nozzle array, for more effectively and efficiently delivering liquid spray to air before its intake into an engine, a power augmentation system for an engine comprising the spray system and a method for more effectively humidifying air. The system is comprised of a plurality of independently-operable nozzle stages, which divide the flow path into a plurality of subsections. A group of nozzle stages comprise a unit of the system, which is comprised of a plurality of repeating units. The units are spaced to allow air flow through. The nozzle array is configured to substantially equally humidify the air through each subsection. The design of the nozzle array achieves more uniform mixing of air and water close to the point of injection of the air and water across the entire water injection range. As such, it maximizes the time available for evaporation by the drops in air that is not oversaturated. | 12-30-2010 |
20100326084 | Methods of oxy-combustion power generation using low heating value fuel - An oxy-combustor is provided to combust oxygen with gaseous low heating value fuel. A compressor upstream of the combustor compresses the fuel. The combustor produces a drive gas including steam and carbon dioxide as well as other non-condensable gases in many cases, which pass through a turbine to output power. The drive gas can be recirculated to the combustor, either through the compressor, the oxygen inlet or directly to the combustor. Recirculation can occur before or after a condenser for separation of a portion of the water from the carbon dioxide. Excess carbon dioxide and steam is collected from the system. The turbine, combustor and compressor can be derived from an existing gas turbine with fuel and air/oxidizer lines swapped. | 12-30-2010 |
20110048026 | System And Process For The Reduction Of Harmful Substances In Engine Exhaust Gases | 03-03-2011 |
20110056211 | METHOD FOR OPERATING A GAS TURBINE PLANT - A gas turbine plant has a compressor ( | 03-10-2011 |
20110126548 | METHOD AND DEVICE FOR THE COMBUSTION OF HYDROCARBON-CONTAINING FUELS - Electric fields control an electric combustion. Plasmas are created by a dielectrically impeded discharge. At least one part of the fuel is mixed with water vapor in the supply line and is subjected to a plasma discharge in a compact reactor that is in close contact with the burner in terms of reaction kinetics. In the associated device, a plasma reactor for creating a reactive plasma gas with at least one supply line for the fuel gas-water vapor mixture and an electric energy supply is integrated into the burner. The device provides suitable flow guidance of the fuel gas-air mixture, of the fuel gas-water vapor mixture, and of the reactive plasma gas. | 06-02-2011 |
20110138817 | METHOD OF INCREASING THE SAFETY OF A POWER PLANT, AND A POWER PLANT SUITABLE FOR IMPLEMENTING THE METHOD - The present invention relates to a method of increasing the safety of a power plant ( | 06-16-2011 |
20110179801 | METHODS AND APPARATUS FOR DILUENT NITROGEN SATURATION - In one aspect, an embodiment of the present disclosure provides an Integrated Gasification Combined Cycle (IGCC) apparatus. The apparatus includes a saturator configured to saturate NPG with water vapor, and a heat recovery steam generator (HRSG), a low pressure steam loop through the saturator, wherein the HRSG is configured to heat the low pressure steam loop. The apparatus further includes a compressor and a heat exchanger configured to heat the NPG using waste process heat and extraction air from the compressor, wherein the heated NPG thereby becomes diluent nitrogen. | 07-28-2011 |
20110219780 | PROCESSING FUEL AND WATER - Fuel is oxidized with air in a pressurized reaction chamber containing water. Water, fuel, or both may be communicated into the reaction chamber in a gaseous state, a liquid state, or both. For example, a liquid mixture that includes the water and/or the fuel can be evaporated to form a gas mixture, and the gas mixture can be communicated into the reaction chamber. Additionally or alternatively, the liquid mixture that includes the water and/or the fuel can be communicated into the reaction chamber and evaporated in the reaction chamber. The water and the fuel may be communicated into the reaction chamber separately or in combination. | 09-15-2011 |
20110239656 | Water Augmentation System - An improved method of augmenting a marine-based turbine engine with water by using a single or a plurality of valves to control the intake and/or the distribution of the water to specific areas of the turbine. The system most commonly incorporates a variable water intake which can be closed or partially closed at higher vessel speeds where the advantages of the system begin to outweigh the benefits. In certain embodiments, a water tank is also used, which can store water for use when the intake system is suspended above the water surface due to wave variations. The improved water augmentation system is beneficial or not detrimental at all speed ranges of the marine vessel, utilizes a low profile water scoop while providing constant water injection, allows for the augmentation of the high temperature exhaust at slower speeds which can be beneficial for initial acceleration, minimizes or eliminates the drag of the injection system on the gaseous flow, offers control over the amount of augmentation, and offers a greater amount of water augmentation than previously known. | 10-06-2011 |
20110265488 | ALTERNATE METHOD FOR DILUENT INJECTION FOR GAS TURBINE NOx EMISSIONS CONTROL - A method and system for gas turbine emissions management through delivery of a diluent fluid stream (steam, CO2, N2 etc) into a gas turbine combustion system while the gas turbine is operating on a conventional fuel such as light distillate oil or natural gas. The diluent injection system delivers required diluent-to-fuel ratios over the emissions compliance operating range of the gas turbine. The method for diluent injection is coupling the injection system to a gas turbine compressor discharge purge system, such that the diluent fluid is mixed with compressor discharge air. The mixed compressor discharge purge air and diluent stream are injected into the gas turbine combustor through a non-fueled combustion fuel nozzle passage to achieve emissions guarantee compliance. | 11-03-2011 |
20110314832 | ADDITIVE INJECTION SYSTEM FOR USE WITH A TURBINE ENGINE AND METHODS OF ASSEMBLING SAME - A method for assembling an additive injection system for use with a turbine engine includes coupling a liquid fuel connection in flow communication with a water supply manifold and coupling an additive source in flow communication with the water supply manifold. | 12-29-2011 |
20110314833 | ADDITIVE INJECTION SYSTEM FOR USE WITH A TURBINE ENGINE AND METHODS OF ASSEMBLING SAME - A method for assembling an additive injection system for use with a turbine engine includes coupling an atomizing air connection to a fuel nozzle assembly and coupling an additive source to the atomizing air connection. | 12-29-2011 |
20120067057 | Intake air temperature control device and a method for operating an intake air temperature control device - An intake air temperature control device including a heat exchanger is provided. The heat exchanger is connected at one side into an intake air line and is connected at the other side into a circuit of an intake air preheating system, wherein a store for a fluid for heat transfer may be thermally connected to the circuit. A method for operating an intake air temperature control device is also provided. | 03-22-2012 |
20120180496 | GAS TURBINE ENGINE - A gas turbine engine has in flow series: a compressor section, a combustor, and a turbine section. The engine further has a steam generator, and a water and steam delivery system. During an engine start-up period, the delivery system delivers liquid water to the combustor and mixes the delivered water in its liquid state with working gas in the combustor. After the start-up period, the delivery system accepts steam from the steam generator, delivers the steam to the combustor and mixes the delivered steam in its gaseous state with the working gas in the combustor. | 07-19-2012 |
20120210726 | ENGINE LIQUID INJECTION - A device capable of collecting a condensate from a working fluid is disclosed. The condensate can take the form of a liquid and can be injected into a flow path of an engine. In one form the engine is a gas turbine engine and the liquid is injected upstream of a combustor. The liquid can be produced using a component that cools the working fluid to condense a vapor within it. In one non-limiting form the component is part of a refrigeration system. In addition to producing condensate, the refrigeration system can cool the working fluid to be used as cooled cooling air to a turbine of a gas turbine engine. In another non-limiting embodiment a liquid derived from a blackwater containing waste from an organism can be delivered in whole or in part to a flow path of the engine. | 08-23-2012 |
20120227411 | METHOD AND GAS TURBINE COMBUSTION SYSTEM FOR SAFELY MIXING H2-RICH FUELS WITH AIR - A method and apparatus are disclosed for mixing H2-rich fuels with air in a gas turbine combustion system, wherein a first stream of burner air and a second stream of a H2-rich fuel are provided. All of the fuel is premixed with a portion of the burner air to produce a pre-premixed fuel/air mixture. This pre-premixed fuel/air mixture is injected into the main burner air stream. | 09-13-2012 |
20120227412 | METHOD OF OPERATING A MULTI-FUEL COMBUSTION SYSTEM - A method of operating a multi-fuel combustion system is provided. The method includes a first phase and a second phase, wherein the first phase includes providing ignition to a combustor basket to ignite a first type of fuel, where the first type of fuel is supplied to the combustor basket through a first conduit. Also in first phase steam is also supplied to the first conduit in addition to the first type of fuel and steam is supplied to the second conduit after the ignition. In the second phase a second type of fuel is supplied to the combustor basket after ignition of the first fuel through the second conduit, while stopping the supply of the first fuel. | 09-13-2012 |
20120285175 | STEAM INJECTED GAS TURBINE ENGINE - A gas turbine engine including a compressor, a combustion chamber and a turbine arranged in flow series, wherein the gas turbine engine further includes: one or more combustion zones; a source of steam configured to deliver steam to the combustion chamber; and a liquid water delivery system configured to selectively provide liquid water to one or more of the combustion zones after a start up period of the gas turbine engine. A method of generating power with a gas turbine engine, the gas turbine engine including a compressor, a combustion chamber and a turbine arranged in flow series, wherein the method includes: selectively delivering steam from a source of steam to the combustion chamber; and providing liquid water to one or more combustion zones after a start up period of the gas turbine engine. | 11-15-2012 |
20120324904 | RADIAL STAGING METHOD AND CONFIGURATION OF A LIQUID INJECTION SYSTEM FOR POWER PLANTS - A turbine power plant employs a radial staging of a liquid injection system to provide a uniform fluid distribution, for use in wet compression. The liquid injection system can be actuated to inject liquid to various radial regions of an air intake case of the turbine power plant. During a stage one actuation, liquid is directed to a first radial region of the air intake case. During a stage two actuation, liquid is directed to the first radial region and also to a second radial region of the air intake case. | 12-27-2012 |
20130061597 | Systems and Methods for Inlet Fogging Control - The present application provides an inlet air fogging system for a gas turbine engine. The inlet air fogging system may include a fogging nozzle array and a fogging control system in communication with the fogging nozzle array. The fogging control system may include a droplet size measurement system and a humidity level measurement system. | 03-14-2013 |
20130098056 | SYSTEM AND METHOD FOR TURBINE COMBUSTOR FUEL ASSEMBLY - A system includes a turbine fuel supply system. The turbine fuel supply system includes a first turbine fuel mixer configured to mix a first liquid fuel and a first deaerated water to generate a first fuel mixture. The first fuel mixture is configured to combust in a combustor of a gas turbine engine. The turbine fuel supply system also includes a deaerated water flow path configured to route the first deaerated water to the first turbine fuel mixer and a liquid fuel flow path configured to route the first liquid fuel to the first turbine fuel mixer. | 04-25-2013 |
20130118180 | Exhaust Gas Treatment Of Gas Turbine Engines - A gas turbine engine, especially a turbojet or turbofan for an aircraft, includes a combustion section and an exhaust section produces an exhaust gas. The emission products can be reduced by using a gas treatment device with a reactor and an injection device. The reactor produces a nitrogeneous substance such as ammonia. This reducing agent is injected in the gas phase in the exhaust section of the gas turbine engine. By selective non catalytic reaction the Nitrogen oxides of the exhaust gas can be reduced. Furthermore the injection device is arranged such that the temperature window of this reduction process is ranging from 850° C. to 1100° C. The reactor for producing gaseous ammonia can either be a thermal reactor or a high pressure plasma device. | 05-16-2013 |
20130145772 | METHOD OF OPERATING A COMBINED CYCLE POWER PLANT - A method is provided for operating a combined cycle power plant. Flue gas of a gas turbine is used for producing steam for a steam turbine. A reliable and flexible black start network restoration is achieved by: a) in island mode, supplying internal consumers by the gas turbine, the operating point of which is selected so that a minimum steam temperature is achieved; b) in island mode, the steam turbine is synchronized and ramped up to an operating point where a maximum power increase is achieved, the resulting steam turbine load change is compensated by the gas turbine; c) consumer loads are connected blockwise; d) the increase in the demanded load being provided by the steam turbine; e) the load of the steam turbine is gradually reduced increasing its load-increasing capacity; and steps c)-e) are repeated until the power plant's base load is achieved. | 06-13-2013 |
20130186097 | Liquid Fuel Heating System - The present application provides a liquid fuel heating system for heating a flow of fuel for a gas turbine engine. The liquid fuel system may include a flow of steam, an ejector/eductor in communication with the flow of fuel and the flow of steam for mixing therewith, and a high pressure pump downstream of the ejector/eductor. | 07-25-2013 |
20130213051 | COMBUSTOR AND METHOD FOR SUPPLYING FUEL TO A COMBUSTOR - A combustor includes an end cap having upstream and downstream surfaces and a cap shield surrounding the upstream and downstream surfaces. First and second sets of premixer tubes extend from the upstream surface through the downstream surface. A first fuel conduit supplies fuel to the first set of premixer tubes. A casing circumferentially surrounds the cap shield to define an annular passage, and a second fuel conduit supplies fuel through the annular passage to the second set of premixer tubes. A method for supplying fuel to a combustor includes flowing a working fluid through first and second sets of premixer tubes, flowing a first fuel into the first set of premixer tubes, and flowing a second fuel through an annular passage surrounding the end cap and into the second set of premixer tubes. | 08-22-2013 |
20130219909 | Fuel Purging System for a Turbine Assembly - A fuel purging system for a turbine assembly includes a fuel delivery system. The fuel delivery system includes a fuel source for providing a fuel to the turbine assembly, a control valve for regulating a fuel flow of the fuel, a flow divider for selectively distributing the fuel to at least one combustor, and a combustor valve located upstream of the at least one combustor. The fuel purging system also includes a steam source for distributing a steam to the fuel delivery system at a location upstream of the combustor valve. | 08-29-2013 |
20130227955 | SYSTEM AND METHOD FOR REDUCING COMBUSTION DYNAMICS IN A COMBUSTOR - A system for reducing combustion dynamics in a combustor includes an end cap having an upstream surface axially separated from a downstream surface, and tube bundles extend through the end cap. A diluent supply in fluid communication with the end cap provides diluent flow to the end cap. Diluent distributors circumferentially arranged inside at least one tube bundle extend downstream from the downstream surface and provide fluid communication for the diluent flow through the end cap. A method for reducing combustion dynamics in a combustor includes flowing fuel through tube bundles that extend axially through an end cap, flowing a diluent through diluent distributors into a combustion chamber, wherein the diluent distributors are circumferentially arranged inside at least one tube bundle and each diluent distributor extends downstream from the end cap, and forming a diluent barrier in the combustion chamber between at least one pair of adjacent tube bundles. | 09-05-2013 |
20130227956 | METHOD OF OPERATING A COMBUSTOR FROM A LIQUID FUEL TO A GAS FUEL OPERATION - A method of operating a combustor having a central nozzle and a plurality of outer nozzles surrounding the central nozzle is provided. The method includes providing a liquid fuel to only the plurality of outer nozzles at a specified total energy input. The method includes decreasing the liquid fuel to the plurality of outer nozzles while simultaneously increasing a gas fuel to the central nozzle and the plurality of outer nozzles to substantially maintain the specified total energy input. The method includes supplying a fuel-air ratio of the gas fuel to the central nozzle that exceeds a threshold value such that a central nozzle flame is anchored. An air-fuel ratio of the gas fuel to the plurality of outer nozzles is less than the threshold value such that a plurality of outer nozzle flames are lifted until a purge flow is supplied to the outer nozzles. | 09-05-2013 |
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 |
20140026587 | GAS TURBINE CONTROLLER AND A METHOD FOR CONTROLLING A GAS TURBINE - Exemplary embodiments relate to a method and system for transient operating of a gas turbine. Operation of the gas turbine the controller determines command values for an inlet air mass flow, fuel mass flow, and for a water or steam mass flow. In order to allow fast transient operation with a stable premix flame at least one command value is dynamically compensated to compensate for the different system dynamics of the supply systems to synchronize the resulting changes in fuel, water, steam, and/or combustion air mass flows, which reach the combustor, so that the fuel to air ratio stays within the combustible limit. | 01-30-2014 |
20140060067 | Power Augmentation Systems and Methods for Grid Frequency Control - The present application provides a combined cycle system. The combined cycle system may include a compressor water wash system in communication with a compressor and a water wash flow, a combustor water injection system in communication with a combustor and an injection flow, and a transient power augmentation system in communication with the compressor, the combustor, and a flow of supplemental water. | 03-06-2014 |
20140060068 | METHOD FOR OPERATING A GAS TURBINE ENGINE INCLUDING A COMBUSTOR SHELL AIR RECIRCULATION SYSTEM - During full load operation of gas turbine engine operation, a valve system is maintained in a closed position to substantially prevent air from passing through a piping system of a shell air recirculation system. Upon initiation of a turn down operation, which is implemented to transition the engine to a turning gear state or a shut down state, the valve system is opened to allow air to pass through the piping system. A blower is operated to extract air through at least one outlet port of the shell air recirculation system from an interior volume of an engine casing portion associated with the combustion section, to convey the extracted air through the piping system, and to inject the air into the interior volume of the engine casing portion through at least one inlet port of the shell air recirculation system to circulate air within the engine casing portion. | 03-06-2014 |
20140123666 | System to Improve Gas Turbine Output and Hot Gas Path Component Life Utilizing Humid Air for Nozzle Over Cooling - A system to improve gas turbine output and extend the life of hot gas path components includes a subsystem for estimating an amount of water or steam to be added to the flow of air to achieve the desired hot gas path temperature. The system includes a water or steam injection component adapted to inject the amount of water or steam to the flow of air to generate a flow of humid air and an injection subsystem adapted to inject the flow of humid air into a nozzle at the turbine stage are also included. The system includes a temperature sensor disposed at a turbine stage, and a subsystem for determining a desired hot gas path temperature at the turbine stage. An extraction conduit is coupled to a compressor stage and is adapted to extract a flow of air. | 05-08-2014 |
20140123667 | METHOD AND GAS TURBINE COMBUSTION SYSTEM FOR SAFELY MIXING H2-RICH FUELS WITH AIR - A method and apparatus are disclosed for mixing H2-rich fuels with air in a gas turbine combustion system, wherein a first stream of burner air and a second stream of a H2-rich fuel are provided. All of the fuel is premixed with a portion of the burner air to produce a pre-premixed fuel/air mixture. This pre-premixed fuel/air mixture is injected into the main burner air stream. | 05-08-2014 |
20140137564 | Mitigation of Hot Corrosion in Steam Injected Gas Turbines - Systems and methods for mitigation of hot corrosion in steam injected gas turbine. In one embodiment, a steam injection system can provide for automatic injection of steam in a gas turbine for NOx abatement and power augmentation. The system can obtain indications as to whether the steam to be injected meets the requirements of the gas turbine in terms of purity and quality. If the quality or purity is not adequate, steam the injection into the combustor or compressor discharge casing (CDC) is automatically inhibited. The system may also monitor the dynamic pressure oscillations inside the combustor. The system may modulate steam flows modulates to enhance the total steam flow while maintaining the dynamic oscillations within acceptable limits. | 05-22-2014 |
20140250905 | Method and apparatus for achieving a high efficiency in an open gas-turbine (combi) process - Method and apparatus for achieving high efficiency in an open gas-turbine process, in which a supercharger compresses air, which is burned together with a fuel in a first combustion chamber, which is followed by a first turbine, a second combustion chamber, a second turbine, and a preheating heat exchanger, in which primary bleed water vapor coming from the secondary process, or a mixture of the aforementioned water vapor and air coming from the supercharger are preheated. From the heat exchanger the combustion gases go to a waste-heat boiler, in which the secondary-process feed water is vaporized. The combustion gases are expanded in the second turbine to a pressure 0.5 bar lower than that of the surrounding atmospheric pressure. The remaining combustion gases are compressed by a combustion-gas supercharger to the surrounding atmospheric pressure. After the low-pressure turbine the water vapor is condensed in a condenser into water, which is compressed by a pump to a maximum pressure and is preheated and vaporized in the waste-heat boiler. After the waste-heat boiler the water vapor goes to a combined high/medium-pressure turbine, from which a secondary-process primary bleed is taken, which is injected into the gas-turbine process after the preheating heat exchange after the supercharger and/or at the latest to the start of the blades of the first turbine. | 09-11-2014 |
20140250906 | Method and apparatus for achieving a high efficiency in an open gas-turbine (combi) process - Method and apparatus for achieving high efficiency in an open gas-turbine process, in which a supercharger compresses air, which is burned together with a fuel in a first combustion chamber, which is followed by a first turbine, a second combustion chamber, a second turbine, and a preheating heat exchanger, in which primary bleed water vapor coming from the secondary process, or a mixture of the aforementioned water vapor and air coming from the supercharger are preheated. From the heat exchanger the combustion gases go to a waste-heat boiler, in which the secondary-process feed water is vaporized. The combustion gases are expanded in the second turbine to a pressure 0.5 bar lower than that of the surrounding atmospheric pressure. The remaining combustion gases are compressed by a combustion-gas supercharger to the surrounding atmospheric pressure. After the low-pressure turbine the water vapor is condensed in a condenser into water, which is compressed by a pump to a maximum pressure and is preheated and vaporized in the waste-heat boiler. After the waste-heat boiler the water vapor goes to a combined high/medium-pressure turbine, from which a secondary-process primary bleed is taken, which is injected into the gas-turbine process after the preheating heat exchange after the supercharger and/or at the latest to the start of the blades of the first turbine. | 09-11-2014 |
20140305131 | METHOD AND DEVICE FOR FEEDING BACK EXHAUST GAS FROM A GAS TURBINE WITH A DOWNSTREAM WASTE HEAT BOILER - A method for feeding back exhaust gas from a gas turbine with a downstream waste heat boiler, wherein this exhaust gas is metered into the air inflow stream of a gas turbine, with the result that the temperature and the composition of the exhaust gas can be controlled, and in this way highly concentrated carbon dioxide (CO | 10-16-2014 |
20140325990 | Gas Turbine and Operation Method of Gas Turbine - A gas turbine having a compressor for compressing air, a combustor for taking in compressed air discharged from the compressor, mixing it with fuel, and burning them, and a turbine driven by combustion gas generated in the combustor, comprising: inlet guide vanes installed at a stage near an inlet of the compressor for adjusting a compressor flow rate by changing an attaching angle thereof, a steam injection mechanism for injecting steam to the combustor, a steam adjustment valve for adjusting the steam injection rate, and a steam rate control mechanism for adjusting an opening of the steam adjustment valve, a steam monitoring mechanism for monitoring the steam rate injected to the combustor, an air temperature monitoring mechanism for monitoring an atmospheric temperature, and a control unit for determining whether a restriction value of the steam injection rate using a temperature, an opening of the inlet guide vanes, and the steam injection rate as indexes is satisfied, and controlling at least one of a temperature of air flowing into the compressor, the steam injection rate, and the inlet guide vane opening. | 11-06-2014 |
20140338353 | METHOD AND ARRANGEMENT FOR INJECTING AN EMULSION INTO A FLAME - An arrangement for injection of an emulsion of a first fluid and a second fluid into a flame of a burner has a central gas duct, an outer gas channel disposed coaxially with the gas duct, and a fluid channel disposed coaxially between the gas duct and the outer gas channel. The central gas duct and the fluid channel are separated by a first frustoconical wall. The fluid channel and the outer gas channel are separated by a second frustoconical wall. The arrangement is mounted concentrically surrounding a heat source which provides through the gas duct hot gases being directed into the flame of the burner. Further, the arrangement includes a mixing device for forming an emulsion of the first fluid and the second fluid, for supplying the emulsion into the fluid channel and for injecting the emulsion from the fluid channel into the flame. | 11-20-2014 |
20140360201 | METHOD AND APPARATUS FOR SUPPLYING A COMBUSTION CHAMBER WITH NITROGEN - In a method for supplying nitrogen to a combustion chamber, gaseous nitrogen ( | 12-11-2014 |
20150033751 | SYSTEM AND METHOD FOR A WATER INJECTION SYSTEM - A system includes a compressor configured to compress a gaseous stream, an exhaust gas cooler configured to cool an exhaust gas from combustion with a cooling water, and a water injection system configured to inject the cooling water from the exhaust gas cooler into at least one of a compressor inlet of the compressor, a stage of the compressor, between stages of the compressor, or an inlet duct coupled to the compressor inlet of the compressor, or any combination thereof. | 02-05-2015 |
20150107258 | GAS TURBINE WITH FLEXIBLE AIR COOLING SYSTEM AND METHOD FOR OPERATING A GAS TURBINE - A gas turbine for a gas and steam turbine plant and method for operating a gas turbine is provided. The gas turbine includes a cooling system for cooling inlet air taken from compressor extractions or compressor discharge and introduced to the turbine(s) and/or combustor(s) of the gas turbine which is adapted for flexible operation in a combined cycle application as well as a simple cycle application. The cooling system includes at least a water/steam cooled cooling air cooler for use in a normal combined cycle application. The gas turbine is provided with at least one second cooling air system arranged in a bypass which is operable instead of or parallel to the water/steam cooled cooling air cooler for use in particular in a simple cycle application operation of the gas turbine. | 04-23-2015 |
20150113997 | METHOD AND SYSTEM FOR GAS TURBINE POWER AUGMENTATION USING STEAM INJECTION - A method of augmenting power output by a gas turbine engine includes channeling fuel into the gas turbine engine at a predetermined fuel flow rate to generate a first power output. Steam is then injected into the gas turbine engine at a first steam flow rate, and a firing temperature bias is determined based at least on the first steam flow rate. The predetermined fuel flow rate is then adjusted based on the determined firing temperature bias such that the gas turbine engine generates a second power output greater than the first power output. | 04-30-2015 |
20150315965 | DEVICE AND METHOD FOR TEMPORARILY INCREASING POWER - A device and a method of temporarily increasing power of at least a first turbine engine is disclosed. The device includes a coolant liquid tank and a first injection circuit connected to the tank and leading to at least one injection nozzle suitable for being installed upstream from at least one compressor stage of the first turbine engine. This first injection circuit includes at least a first flow valve configured to open when a pressure exceeds a predetermined threshold compared with a downstream pressure from at least one compressor stage of a second turbine engine so as to enable the coolant liquid to flow towards the injection nozzle of the first injection circuit. | 11-05-2015 |
20150345401 | SYSTEMS AND METHODS FOR PREHEATING FUEL FOR GAS TURBINE ENGINES - Systems and methods for preheating fuel in a gas turbine engine are provided. In one embodiment, a system may include a gas turbine engine, a fuel line in fluid communication with the gas turbine engine, a gas turbine compartment disposed about the gas turbine engine, and a first conduit in fluid communication with the gas turbine compartment. The first conduit may include ventilation discharge air from the gas turbine compartment. The system also may include a first heat exchanger in communication with the fuel line and the first conduit. The first heat exchanger may be configured to exchange heat between the fuel and the ventilation discharge air from the gas turbine compartment. | 12-03-2015 |
20150361883 | GAS TURBINE PLANT WITH IMPROVED FLEXIBILITY - A gas turbine plant includes a gas turbine having a compressor, a combustion chamber and an expander; and a water-steam circuit which is thermally connected to the gas turbine such that during the operation of the gas turbine, waste gas drawn off therefrom transfers heat to the water-steam circuit in order to generate steam. The water-steam circuit is further thermally connected to a heat accumulator which in turn is thermally connected to a container for storing water. The container is fluidically coupled to the gas turbine such that water can be supplied from the container to the gas turbine during the operation of the latter in order to increase output. A flash valve is connected between the container and the gas turbine, the valve being designed to reduce the pressure of the water taken from the container to a lower pressure level. | 12-17-2015 |
20150369125 | METHOD FOR INCREASING THE POWER OF A COMBINED-CYCLE POWER PLANT, AND COMBINED-CYCLE POWER PLANT FOR CONDUCTING SAID METHOD - The invention relates to a method for temporary increasing the power of a gas turbine, which is part of a combined-cycle power plant, wherein the exhaust gas of the gas turbine is used in a heat recovery steam generator to generate steam for a water/steam cycle including a steam turbine with a high pressure steam turbine, an intermediate pressure steam turbine and a low pressure steam turbine, whereby the method comprises the step of injecting steam from the water/steam cycle at a predetermined injection pressure into the gas turbine. The efficiency is improved by taking steam of a lower pressure than the predetermined injection pressure from the water/steam cycle, increasing the pressure of the steam taken from the water/steam cycle to the predetermined injection pressure by subjecting it in separate compressing means to a compression step, and injecting the compressed steam into the gas turbine. | 12-24-2015 |
20160010511 | POWER GENERATION SYSTEM AND METHOD TO OPERATE | 01-14-2016 |
20160053682 | CAES PLANT USING STEAM INJECTION AND BOTTOMING CYCLE EXPANDER - A system and method are provided for a compressed air energy storage (CAES) system. The system and method may include compressing a process gas with a compressor train to produce a compressed process gas. The compressed process gas may be directed to a compressed gas storage unit and stored therein. The compressed process gas from the compressed gas storage unit may be released to a heat recovery unit via a feed line. The heat recovery unit may heat the compressed process gas and direct the heated compressed process gas to an expansion assembly to generate a power output. Feed water from a feed water source may be heated in the heat recovery unit to produce steam for injection into a combustion turbine assembly. The combustion turbine assembly may heat the heat recovery unit via an exhaust line. | 02-25-2016 |
20160061109 | METHOD OF INCREASING THE SAFETY OF A POWER PLANT, AND A POWER PLANT SUITABLE FOR IMPLEMENTING THE METHOD - The present invention relates to a method of increasing the safety of a power plant provided with at least one heat engine and a gearbox (BTP), the engine driving the gearbox (BTP), the gearbox (BTP) having a lubrication system implemented using an aqueous medium stored in a reserve, in which method a fluid comprising water is injected into the heat engine to increase the power developed by the heat engine without increasing the temperature of a member of the heat engine or to decrease the temperature without modifying the power developed by the engine, the fluid being taken from the reserve. | 03-03-2016 |
20160069218 | POWER PLANT SYSTEM HAVING A THERMOCHEMICAL ACCUMULATOR - A power plant system has a heat-generating unit for providing thermal energy; a water-steam circuit, which is connected to the heat-generating unit for heat transfer; an electricity-generating device, which can be energised by the thermal energy conducted in the water-steam circuit to generate electricity; and a thermochemical accumulator, which is connected to the water-steam circuit. The thermochemical accumulator is connected to an exhaust gas line of the heat-generating unit for heat transfer, and the thermochemical accumulator has two tanks, which are connected to each other for fluid flow. A thermochemical storage material is arranged in a first tank, and the first tank is supplied with heat by thermally conditioned exhaust gas of the heat-generating unit, and the second tank is connected for heat flow to a heat exchanger, by which the second tank is supplied with low-temperature heat at a temperature level of at most 150° C. | 03-10-2016 |
20160130982 | GAS TURBINE EFFICIENCY AND POWER AUGMENTATION IMPROVEMENTS UTILIZING HEATED COMPRESSED AIR - The present invention discloses a novel apparatus and methods for augmenting the power of a gas turbine engine, improving gas turbine engine operation, and reducing the response time necessary to meet changing demands of a power plant. Improvements in power augmentation and engine operation include systems and methods for preheating a steam injection system. | 05-12-2016 |
20160131030 | GAS TURBINE EFFICIENCY AND POWER AUGMENTATION IMPROVEMENTS UTILIZING HEATED COMPRESSED AIR AND STEAM INJECTION - The present invention discloses a novel apparatus and methods for augmenting the power of a gas turbine engine, improving gas turbine engine operation, and reducing the response time necessary to meet changing demands of a power plant. Improvements in power augmentation and engine operation include systems and methods for preheating piping of a power augmentation system and directing flows of hot compressed air, steam or a combination thereof into the gas turbine engine. | 05-12-2016 |
20160138431 | Humid Air Turbine Power, Water Extraction, and Refrigeration Cycle - Various embodiments relate to combined heat and power (CHP) systems. A CHP system can include a turbine system, a turbocharger system, and a refrigeration system. The refrigeration system can receive combustion products from the turbine system and compressed air from the turbocharger system. The refrigeration system can cool the combustion products and the compressed air to generate a cooled combustion product mixture that is provided to the turbine system. | 05-19-2016 |
20160138470 | APPLICATION OF PROBABILISTIC CONTROL IN LIQUID-FUELED GAS TURBINE TUNING, RELATED CONTROL SYSTEMS, COMPUTER PROGRAM PRODUCTS AND METHODS - Various embodiments include a system having: at least one computing device configured to tune a set of gas turbines (GTs) by performing actions including: commanding each GT in the set of GTs to a base load level, based upon a measured ambient condition for each GT; commanding each GT in the set of GTs to adjust a respective output to match a nominal mega-watt power output value, and subsequently measuring an actual fuel flow value and an actual emissions value for each GT; adjusting at least one of a fuel flow or a water flow for each GT to an adjusted water/fuel ratio in response to the actual emissions value deviating from an emissions level associated with the base load level, while maintaining the respective adjusted output; and adjusting an operating condition of each GT in the set of GTs based upon a difference between the respective measured actual fuel flow value and a nominal fuel flow value at the ambient condition, while maintaining the adjusted water/fuel ratio. | 05-19-2016 |
20160146059 | METHOD AND DEVICE FOR CONTROLLING THE SPRAYING OF WATER INTO THE FLUE GAS DUCT OF A GAS AND STEAM TURBINE INSTALLATION - A method for operating a gas and steam turbine installation, wherein the heat contained in the expanded flue gas of the gas turbine is used to generate steam for the steam turbine. If a critical operating state arises, the temperature of the expanded flue gas is reduced by introducing water into the expanded flue gas in the flue gas duct between the gas turbine and the waste-heat steam generator connected downstream with regard to flow, wherein the amount of water to be introduced is determined in dependence on the flue gas temperature. The flue gas temperature is measured before water is introduced into the flue gas, an average combustion temperature of the combustion chamber of the gas turbine is determined from the flue gas temperature, and the amount of water to be introduced is set on the basis of the combustion temperature. | 05-26-2016 |
20160169116 | SYSTEMS AND METHODS FOR COMPRESSOR ANTICORROSION TREATMENT | 06-16-2016 |
20160169117 | SYSTEMS AND METHODS FOR COMPRESSOR ANTICORROSION TREATMENT USING COOLING WATER SYSTEM | 06-16-2016 |
20160178203 | APPARATUS AND METHOD FOR PURGING A GAS TURBOMACHINE NOZZLE | 06-23-2016 |
20220136413 | MECHANICAL/ELECTRICAL POWER GENERATION SYSTEM - Electrical/mechanical power is derived from oxycombustion of hydrocarbons, preferably LNG, in a first of two nested cycles each operating on a Brayton cycle to provide a source of power, without mixing of working fluids between the two cycles. Each cycle employs CO | 05-05-2022 |