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12842results about "Steam engine plants" patented technology
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Combined steam and gas turbine engine with magnetic transmission
InactiveUS6263664B1Wide areaImprove system efficiencyContinuous combustion chamberGearingThermal energyCombustion chamber
In a combined steam and gas turbine engine cycle, a combustion chamber is made durable against high pressure and enlarged in length to increase the operation pressure ratio, without exceeding the heat durability temperature of the system while increasing the fuel combustion gas mass flow four times as much as the conventional turbine system and simultaneously for greatly raising the thermal efficiency of the system and specific power of the combined steam and gas turbine engine.Water pipes and steam pipes are arranged inside the combustion chamber so that the combustion chamber can function as a heat exchanger and thereby convert most of the combustion thermal energy into super-critical steam energy for driving a steam turbine and subsequently raising the operation pressure ratio and the thermal efficiencies of the steam turbine cycle and gas turbine cycle. The combustion gas mass flow can be also increased by four times as much as the conventional turbine system (up to the theoretical air to fuel ratio) and the thermal efficiency and the specific power of the gas turbine cycle are considerably increased.Further, the thermal efficiency of the combined system is improved by installing a magnetic friction power transmission system to transmit the power of the system to outer loads.
Owner:TANIGAWA HIROYASU +1
Methods and systems for enhancing control of power plant generating units
A control method for optimizing or enhancing an operation of a power plant that includes thermal generating units for generating electricity. The power plant may include multiple possible operating modes differentiated by characteristics of operating parameters. The method may include tuning a power plant model so to configure a tuned power plant model. The method may further include simulating proposed operating modes of the power plant with the tuned power plant model. The simulating may include a simulation procedure that includes: defining a second operating period; selecting the proposed operating modes from the possible operating modes; with the tuned power plant model, performing a simulation run for each of the proposed operating modes whereby the operation of the power plant during the second operating period is simulated; and obtaining simulation results from each of the simulation runs.
Owner:GENERAL ELECTRIC CO
Staged combustion of a low heating value fuel gas for driving a gas turbine
A process is provided for combusting a low heating value fuel gas in a combustor to drive an associated gas turbine. A low heating value fuel gas feed is divided into a burner portion and a combustion chamber portion. The combustion chamber portion and a combustion air are conveyed into a mixing zone of the combustor to form an air / fuel mixture. The burner portion is conveyed into a flame zone of the combustor through a burner nozzle while a first portion of the air / fuel mixture is conveyed into the flame zone through a burner port adjacent to the burner nozzle. The burner portion and first portion of the air / fuel mixture are contacted in the flame zone to combust the portions and produce flame zone products. The flame zone products are conveyed into an oxidation zone of the combustor downstream of the flame zone while a second portion of the air / fuel mixture is also conveyed into the oxidation zone. The second portion is combusted in the oxidation zone in the presence of the flame zone products to produce combustion products. The combustion products are conveyed into the associated gas turbine and drive the gas turbine.
Owner:MARATHON OIL CO +1
System and method for high efficiency power generation using a carbon dioxide circulating working fluid
ActiveUS20110179799A1Improve efficiencyIncrease pressure ratioSolidificationLiquefactionWorking fluidCombustor
The present invention provides methods and system for power generation using a high efficiency combustor in combination with a CO2 circulating fluid. The methods and systems advantageously can make use of a low pressure ratio power turbine and an economizer heat exchanger in specific embodiments. Additional low grade heat from an external source can be used to provide part of an amount of heat needed for heating the recycle CO2 circulating fluid. Fuel derived CO2 can be captured and delivered at pipeline pressure. Other impurities can be captured.
Owner:8 RIVERS CAPTTAL LLC
Heat energy recapture and recycle and its new applications
InactiveUS20050120715A1Increase the atmosphereGood sunshineEngine fuctionsEfficient propulsion technologiesThermal energyDistillation
What has been created is a plurality and a variety of processes and a variety of devices correspondingly supportive to each process, wherein, a new partnership between; (1) a heat absorbing radiator compressed air pipes / tubes and (2) a gas turbine engine or a reciprocating piston engine,—is used to recapture and reconvert the, otherwise wasted, heat energies expelled by engines, by factories, by smelting plants, by distillation plants, by chillers / coolers / freezers, by cooking ovens, by lamps / stoves, by trash burners, and the heat energies created by the solar heat on the desert / ocean water,—into electric power and finally into hydrogen-deuterium fuel,—by having the engine's tailpipes submerged in cold compressed air inside the heat absorbing radiator pipes in reverse air flow, to further drive and re-drive the same engine; wherein, in order to capture fusion heat energy the hydrogen bomb is detonated in the deep ocean to catch the flames by the water and the hot water is used to energize the compressed air inside the heat absorbing radiator pipes; wherein, in order to produce fusion energy, an abundant electric arc is passed across liquid deuterium or across gaseous deuterium by the electro-plasma torch and sparkplug in the internal combustion engine, and by detonating a dynamite inside a liquid deuterium; wherein diamond is produced by placing carbon inside the hydrogen bomb; and wherein, deuterium fusion flame is used first in smelting glass to large sizes before running an engine.
Owner:CHRISTIAN SCHOOL OF TECH CHARITABLE FOUND TRUST
Organic Rankine Cycle Mechanically and Thermally Coupled to an Engine Driving a Common Load
InactiveUS20090211253A1Maximize efficiencyEngine componentsSteam engine plantsPtru catalystOrganic Rankine cycle
The shaft (20) of an engine (19) is coupled to a turbine (28) of an organic Rankine cycle subsystem which extracts heat (45-48, 25) from engine intake air, coolant, oil, EGR and exhaust. Bypass valves (92,94, 96, 99) control engine temperatures. Turbine pressure drop is controlled via a bypass valve (82) or a mass flow control valve (113). A refrigeration subsystem having a compressor (107) coupled to the engine shaft uses its evaporator (45a) to cool engine intake air. The ORC evaporator (25a) may comprise a muffler including pressure pulse reducing fins (121, 122), some of which have NOx and / or particulate reducing catalysts thereon.
Owner:UNITED TECH CORP
Hydrocarbon combustion power generation system with CO2 sequestration
InactiveUS7043920B2Eliminate needReduce electricity demandReciprocating combination enginesSolidificationAtmospheric airOxygen
A low or no pollution engine is provided for delivering power for vehicles or other power applications. The engine has an air inlet which collects air from a surrounding environment. At least a portion of the nitrogen in the air is removed. The remaining gas is primarily oxygen, which is then routed to a gas generator. The gas generator has inputs for the oxygen and a hydrocarbon fuel. The fuel and oxygen are combusted within the gas generator, forming water and carbon dioxide. The combustion products are then expanded through a power generating device, such as a turbine or piston expander to deliver output power for operation of a vehicle or other power uses. The combustion products are then passed through a condenser where the steam is condensed and the carbon dioxide is collected or discharged. A portion of the water is routed back to the gas generator. The carbon dioxide is compressed and delivered to a terrestrial formation from which return of the CO2 into the atmosphere is inhibited.
Owner:CLEAN ENERGY SYST
Hydrogen production from carbonaceous material
InactiveUS6790430B1Avoid the needCalcium/strontium/barium carbonatesGas turbine plantsCalcinationExothermic reaction
Owner:BOARD OF SUPERVISORS OF LOUISIANA STATE UNIV & AGRI & MECHANICAL COLLEGE +1
Method and apparatus for vaporizing liquid natural gas in a combined cycle power plant
InactiveUS6367258B1Turbine/propulsion engine coolingTurbine/propulsion fuel heatingPower stationProcess engineering
A method and apparatus for increasing the efficiency of a combined cycle generation plant by assisting the vaporization of cold liquid including liquefied natural gas ("LNG") or liquefied petroleum gas (LPG) in a combined cycle power plant. Cold liquid vaporization is assisted by circulating a warm heat transfer fluid to transfer heat to a LNG / LPG vaporizer. The heat transfer fluid is chilled by LNG / LPG cold liquid vaporization and warmed by heat from a gas turbine. The heat transfer fluid absorbs heat from the air intake of a gas turbine and from a secondary heat transfer fluid circulating in a combined cycle power plant. Chilling the gas turbine air intake densifies the air and increases the gas turbine output. Chilling the steam condenser cooling water increases steam turbine output. The effects of chill recovery is higher output and better efficiency of the combined cycle plant.
Owner:BECHTEL CORP
Working fluids for thermal energy conversion of waste heat from fuel cells using rankine cycle systems
A process for recovering waste heat which comprises: (a) passing a liquid phase working fluid through a heat exchanger in communication with a process which produces the waste heat; (b) removing a vapor phase working fluid from the heat exchanger; (c) passing the vapor phase working fluid to an expander, wherein the waste heat is converted into mechanical energy; and (d) passing the vapor phase working fluid from the expander to a condenser, wherein the vapor phase working fluid is condensed to the liquid phase working fluid. The preferred working fluid is an organic Rankine cycle system working fluid comprising compounds having the following general structure: where x, y, z, and m are each selected from the group consisting of: fluorine, hydrogen, Rf, and R, wherein R and Rf are each an alkyl, aryl, or alkylaryl of 1 to 6 carbon atoms, and wherein Rf is partially or fully fluorinated.
Owner:HONEYWELL INT INC
Wind energy turbine
A wind energy turbine includes a tower, a nacelle rotatably supported by the tower, a rotor rotatably supported by the nacelle, and at least one unit to be cooled and arranged in the tower and / or the nacelle. The unit is adapted to be cooled by a cooling medium flowing in a cooling circuit from the unit to at least one heat exchanger. The at least one heat exchanger is located outside of the tower and / or nacelle and configured to be cooled by ambient air.
Owner:GENERAL ELECTRIC CO
Steam Generation Processes Utilizing Biomass Feedstocks
Integrated catalytic gasification processes are provided involving generating steam for converting carbonaceous materials to combustible gases, such as methane. Generally, steam generated from the combustion of a biomass is provided to a catalytic gasifier, wherein under appropriate temperature and pressure conditions, a carbonaceous feedstock is converted into a plurality of product gases, including, but not limited to, methane, carbon monoxide, hydrogen, and carbon dioxide.
Owner:SURE CHAMPION INVESTMENT LTD
Optimization system using an iteratively coupled expert engine
ActiveUS20120010758A1Minimizes and maximizes objective functionEasy to operateProgramme controlMechanical power/torque controlOperational systemProcess engineering
An energy management system uses an expert engine and a numerical solver to determine an optimal manner of using and controlling the various energy consumption, producing and storage equipment in a plant / communities in order to for example reduce energy costs within the plant, and is especially applicable to plants that require or that are capable of using and / or producing different types of energy at different times. The energy management system operates the various energy manufacturing and energy usage components of the plant to minimize the cost of energy over time, or at various different times, while still meeting certain constraints or requirements within the operational system, such as producing a certain amount of heat or cooling, a certain power level, a certain level of production, etc. In some cases, the energy management system may cause the operational equipment of the plant to produce unneeded energy that can be stored until a later time and then used, or that can be sold back to a public utility, for example, so as to reduce the overall cost of energy within the plant.
Owner:EMERSON PROCESS MANAGEMENT POWER & WATER SOLUTIONS
Processes for Making Synthesis Gas and Syngas-Derived Products
The present invention provides processes for making synthesis gas and processes for making syngas-derived products. For example, one aspect of the present invention provides a process for making a synthesis gas stream comprising hydrogen and carbon monoxide, the process comprising (a) providing a carbonaceous feedstock; (b) reacting the carbonaceous feedstock in a gasification reactor in the presence of steam and a gasification catalyst under suitable temperature and pressure to form a raw product gas stream comprising a plurality of gases comprising methane, hydrogen and carbon monoxide; (c) removing steam from and sweetening the raw product gas stream to form a sweetened gas stream; (d) separating and adding steam to the sweetened gas stream to form a first reformer input gas stream having a first steam / methane ratio; and a second reformer input stream having a second steam / methane ratio, in which the first steam / methane ratio is smaller than the second steam / methane ratio; (e) reforming the second reformer input stream to form a recycle gas stream comprising steam, carbon monoxide and hydrogen; (f) introducing the recycle gas stream to the gasification reactor; and (g) reforming the first reformer input stream to form the synthesis gas stream.
Owner:SURE CHAMPION INVESTMENT LTD
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.
Owner:CLEAN ENERGY SYST
Low pollution power generation system with ion transfer membrane air separation
InactiveUS6945029B2Nitrogen oxideReduce electricity demandSolidificationLiquefactionPollutionCombustion products
A low or no pollution power generation system is provided. The system has an air separator to collect oxygen. A gas generator is provided with inputs for the oxygen and a hydrocarbon fuel. The fuel and oxygen are combusted within the gas generator, forming water and carbon dioxide. Water or other diluents are also delivered into the gas generator to control temperature of the combustion products. The combustion products are then expanded through at least one turbine or other expander to deliver output power. The combustion products are then passed through a separator where the steam is condensed. A portion of the water is discharged and the remainder is routed back to the gas generator as diluent. The carbon dioxide can be conditioned for sequestration. The system can be optimized by adding multiple expanders, reheaters and water diluent preheaters, and by preheating air for an ion transfer membrane oxygen separation.
Owner:CLEAN ENERGY SYST
Adiabatic compressed air energy storage system with liquid thermal energy storage
InactiveUS20110100010A1Reciprocating combination enginesCombination enginesThermal energyThermal energy storage
An adiabatic compressed air energy storage (ACAES) system includes a compressor system, an air storage unit, and a turbine system. The ACAES system further includes a thermal energy storage (TES) system that includes a container, a plurality of heat exchangers, a liquid TES medium conduit system fluidly coupling the container to the plurality of heat exchangers, and a liquid TES medium stored within the container. The TES system also includes a plurality of pumps coupled to the liquid TES medium conduit system and configured to transport the liquid TES medium between the plurality of heat exchangers and the container, and a thermal separation system positioned within the container configured to thermally isolate a first portion of the liquid TES medium at a lower temperature from a second portion of the liquid TES medium at a higher temperature.
Owner:GENERAL ELECTRIC CO
Reforming system for combined cycle plant with partial CO2 capture
A combined cycle system includes, a pre-steam-methane-reformer operating at a temperature of less than about 800 degrees Celsius to reform a mixed fuel stream to generate a first reformate stream, a water-gas-shift reactor to convert carbon monoxide in the first reformate stream to carbon dioxide and form a second reformate stream, a carbon dioxide removal unit for removing carbon dioxide from the second reformate stream and form a carbon dioxide stream and a third reformate stream; wherein less than about 50 percent of the carbon contained in the mixed fuel stream is recovered as carbon dioxide by the removal unit, a gas turbine unit for generating power and an exhaust stream, and a steam generator unit configured to receive the exhaust stream, wherein the heat of the exhaust stream is transferred to a water stream to generate the steam for the mixed fuel stream and for a steam turbine.
Owner:GENERAL ELECTRIC CO
System comprising the gasification of fossil fuels to process unconventional oil sources
A facility comprising integrated systems for the extraction, and optionally upgrading and / or refinement, of unconventional oil sources, using fossil fuels as a primary source of energy. In particular, this facility provides a means to gasify one or more fossil fuels in an efficient manner, converting it into intermediate products such as heat, steam and electricity, which are then used by the system to obtain useful fuel products from unconventional oil sources such as tar sands and oil shale. The design of the components of this facility is optimized such that the overall costs are competitive with an equivalent unconventional oil source processing facility that uses natural gas as a source of processing energy. The facility can be used on its own, may use supplemental natural gas energy sources, or may be used in conjunction with an existing facility that uses natural gas as an energy source in order to improve the overall cost effectiveness of the processing and / or reduce the requirement for other energy sources, such as natural gas.
Owner:PLASCO ENERGY GROUP INC
Thermal and compressed air storage system
InactiveUS7086231B2Improve efficiencyReduced point source pollutionHeat storage plantsSteam accumulatorsEngineeringTurbine
Combined thermal and compressed air storage systems are provided that utilize an exhaustless heater, such as a thermal storage unit, to provide power with enhanced efficiency. Compressed air is heated by the thermal storage unit prior to entering a turbine, which powers an electrical generator. In various embodiments, ambient air temperature, turbine exhaust or other types of waste heat are used to preheat the compressed air prior to the compressed air entering the thermal storage unit, thereby further increasing system efficiency.
Owner:P10 IND INC
Liquified natural gas (LNG) fueled combined cycle power plant and a (LNG) fueled gas turbine plant
InactiveUS6374591B1Improve efficiencyParts are smallGas handling applicationsGas turbine plantsCombustion chamberPower station
A process and system which improves the capacity and efficiency of a power plant. A LNG supply system fuels the plant. Gasified LNG in a combustor mixes with the air from an air compressor to provide the hot combustion gas for a gas turbine. The expanding LNG is used to chill a heat exchange fluid, e.g. water, which heat exchange fluid cools and densifies the intake air for the air compressor. Subsequently, the heat exchange fluid is used in another heat exchange step and is then re-chilled and recycled to cool and densify the intake air.
Owner:SUEZ LNG NA
Power plant with emissions recovery
InactiveUS20100018218A1Reduce deliveryEnvironment safetySolidificationLiquefactionParticulatesNitrogen gas
A power plant including an air separation unit (ASU) arranged to separate nitrogen, oxygen, carbon dioxide and argon from air and produce a stream of substantially pure liquid oxygen, nitrogen, carbon dioxide and argon; a steam generator, fired or unfired, arranged to combust a fuel, e.g., natural gas, liquefied natural gas, synthesis gas, coal, petroleum coke, biomass, municipal solid waste or any other gaseous, liquid or solid fuel in the presence of air and a quantity of substantially pure oxygen gas to produce an exhaust gas comprising water, carbon dioxide, carbon monoxide, nitrogen oxides, nitrogen, sulfur oxides and other trace gases, and a steam-turbine-generator to produce electricity, a primary gas heat exchanger unit for particulate / acid gas / moisture removal and a secondary heat exchanger arranged to cool the remainder of the exhaust gases from the steam generator. Exhaust gases are liquefied in the ASU thereby recovering carbon dioxide, nitrogen oxides, nitrogen, sulfur oxides, oxygen, and all other trace gases from the steam generator exhaust gas stream. The cooled gases are liquefied in the ASU and separated for sale or re-use in the power plant. Carbon dioxide liquid is transported from the plant for use in enhanced oil recovery or for other commercial use. Carbon dioxide removal is accomplished in the ASU by cryogenic separation of the gases, after directing the stream of liquid nitrogen from the air separation unit to the exhaust gas heat exchanger units to cool all of the exhaust gases including carbon dioxide, carbon monoxide, nitrogen oxides, nitrogen, oxygen, sulfur oxides, and other trace gases.
Owner:TRIENCON SERVICES
Process for producing Hydrocarbon fluids combining in situ heating, a power plant and a gas plant
An in situ method of producing hydrocarbon fluids from an organic-rich rock formation is provided. The method may include heating an organic-rich rock formation, for example an oil shale formation, in situ to pyrolyze formation hydrocarbons, for example kerogen, to form a production fluid containing hydrocarbon fluids. The method may include separating the production fluid into at least a gas stream and a liquid stream, where the gas stream is a low BTU gas stream. The low BTU gas stream is then fed to a gas turbine where it is combusted and is used to generate electricity.
Owner:KAMINSKY ROBERT D +4
Low emission turbine system and method
InactiveUS20090218821A1Emission reductionGas turbine plantsMechanical energy handlingElectricityCombustor
A turbine system is provided. The turbine system includes a compressor configured to compress ambient air and a combustor configured to receive compressed air from the compressor, and to combust a fuel stream to generate an exhaust gas. The turbine system also includes a turbine for receiving the exhaust gas from the combustor to generate electricity; wherein a first portion of the exhaust gas is mixed with the ambient air to form a low-oxygen air stream, and wherein the low-oxygen air stream is compressed using the compressor, and is directed to the combustor for combusting the fuel stream to generate a low-NOx exhaust gas.
Owner:GENERAL ELECTRIC CO
Systems and Methods for Energy Storage and Recovery Using Rapid Isothermal Gas Expansion and Compression
InactiveUS20100089063A1Increase energy densityHigh outputElectrical storage systemInternal combustion piston enginesProduct gasEngineering
The invention relates to systems and methods for rapidly and isothermally expanding and compressing gas in energy storage and recovery systems that use open-air hydraulic-pneumatic cylinder assemblies, such as an accumulator and an intensifier in communication with a high-pressure gas storage reservoir on a gas-side of the circuits and a combination fluid motor / pump, coupled to a combination electric generator / motor on the fluid side of the circuits. The systems use heat transfer subsystems in communication with at least one of the cylinder assemblies or reservoir to thermally condition the gas being expanded or compressed.
Owner:SUSTAINX
Methods and apparatus for starting up emission-free gas-turbine power stations
InactiveUS6945052B2Large capacityGas turbine plantsIndirect carbon-dioxide mitigationPower stationCombustion chamber
In a power generation plant having at least one gas turbine cycle with heat-recovery boiler (4) and at least one steam turbine cycle operated via the heat-recovery boiler (4), the gas turbine cycle being designed to be semi-closed and essentially free of emissions and essentially comprising a compressor (1), a combustion chamber (2) arranged downstream of the compressor (1), a gas turbine (3) arranged downstream of the combustion chamber (2), a heat-recovery boiler (4) arranged downstream of the gas turbine (3), and at least one generator (8) coupled to the gas turbine (3), modes of operation with the gas turbine cycle stopped and start-up using fresh air are made possible by first means (12) being arranged which alternatively or additionally allow hot gas to be fed into the hot-gas path (23) between gas turbine (3) and heat-recovery boiler (4), and by second means (15) being arranged which alternatively or additionally allow exhaust gas to be expelled from the exhaust-gas path (40) downstream of the heat-recovery boiler (4).
Owner:ANSALDO ENERGIA IP UK LTD
Supplementary Thermal Energy Transfer in Thermal Energy Recovery Systems
ActiveUS20090320477A1Maximize power generationIncrease energy contentSteam engine plantsMechanical energyEngineering
A system for controlled recovery of thermal energy and conversion to mechanical energy. The system collects thermal energy from a reciprocating engine (for example, from engine jacket fluid) and may also collect further thermal energy from a natural gas compressor (for example, from compressor lubricating fluid). The collected thermal energy is used to generate secondary power by evaporating an organic propellant and using the gaseous propellant to drive an expander in production of mechanical energy. Secondary power is used to power parasitic loads, improving energy efficiency of the system. A supplementary cooler may provide additional cooling capacity without compromising system energy efficiency.
Owner:JUCHYMENKO VICTOR
Hybrid generation with alternative fuel sources
Owner:BRIGHTSOURCE ENERGY
Energy storage and generation
InactiveUS20090282840A1Maximize useMinimize changesSolidificationLiquefactionPropellerProcess engineering
The present invention concerns systems for storing energy and using the stored energy to generate electrical energy or drive a propeller (505). In particular, the present invention provides a method of storing energy comprising: providing a gaseous input, producing a cryogen from the gaseous input; storing the cryogen; expanding the cryogen; using the expanded cryogen to drive a turbine (320) and recovering cold energy from the expansion of the cryogen. The present invention also provides a cryogenic energy storage system comprising: a source of cryogen; a cryogen storage facility (370); means for expanding the cryogen; a turbine (320) capable of being driven by the expanding cryogen; and means (340, 350) for recovering cold energy released during expansion of the cryogen.
Owner:HIGHVIEW ENTERPRISES LTD
Methods and systems for enhancing operation of power plant generating units and systems
ActiveUS20160281607A1Programme controlTurbine/propulsion engine ignitionPower stationControl engineering
A method for controlling and enhancing a startup operation for a combined cycle power block (block) having at least one gas turbine and at least one steam turbine, wherein operating parameters define performance and operational characteristics for the startup operation, the method comprising: receiving measured operating parameters from a plurality of reference blocks and, for each of the plurality of reference blocks, a plurality of types of the startup operations; given the measured operating parameters, developing one or more reference transfer functions between two of the measured operating parameters; receiving measured operating parameters from the startup operation of a target block; given the measured operating parameters from the target block, developing one or more transfer functions for the target block between two of the operating parameters; selecting one of the reference transfer functions; and normalizing the transfer function of the target block per the selected reference transfer function.
Owner:GENERAL ELECTRIC CO
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