Abstract:
A combined energy storage and power production system (200) comprises: a hydrogen and oxygen production unit (100); a hydrogen compression, cooling and storage unit (200A) for compressing, cooling and storing hydrogen from the hydrogen and oxygen production unit (100); an oxygen compression, cooling and storage unit (300) for compressing, cooling and storing oxygen from the hydrogen and oxygen production unit (100); and a power production unit (400) wherein supercritical carbon dioxide is expanded across a turbine (405) for power production and recompressed in a Brayton Cycle using internal hydrogen-oxygen combustion as a thermal power source; and a water recovery, treatment and storage unit (102,103,104). The power production unit (400) includes a combustion chamber (401) wherein hydrogen-oxygen combustion occurs in the presence of supercritical carbon dioxide (403). The hydrogen and oxygen production unit (100) preferably involves green hydrogen production by electrolysis producing oxygen as a by-product utilised in hydrogen-oxygen combustion.
Abstract:
The present disclosure provides methods for controlling volumetric flows of streams into a combustor (10a), and particularly in a combustor utilized in a power production method. A controller (210) can be used to receive a variety of inputs, carry out calculations, and output one or more signals that adjust one or more parameters of one or more of the streams entering the combustor. Such adjustments can be effective to normalize a volumetric flow rate (10a) between the combustor (10a) and a turbine (10b)immediately downstream from the combustor without requiring direct measurement of the volumetric flow rate between the combustor and the turbine immediately downstream from the combustor.
Abstract:
The present invention relates to an energy conversion system comprising: - a Solid Oxide Fuel Cell (SOFC) unit (A) having an anode and a cathode side, configured for receiving a fuel (1) and a steam of oxidant (4) and for converting a fraction of chemical power of the fuel (1) directly into electric power through one or more electrochemical reactions occurring on the anode and the cathode side of the SOFC unit (A) involving said fuel (1) and said oxidant (4), parts of the fuel (1) and of the steam of oxidant (4) being maintained unconverted following said electrochemical reactions; - a combustor unit (B) arranged to receive the unconverted fuel (5) and the unconverted oxidant (6) from the SOFC unit (A), configured for the combustion of the unconverted fuel (5) using the unconverted oxidant (6), thereby converting the unconverted fuel (5) and the unconverted oxidant (6) into product gas (10); - an expander unit (C) arranged to receive the product gas (10) exiting the combustor (B) and configured for expanding said product gas (10) exiting the combustor (B) into flue gas (12)being; - a cooler unit (E) in thermal relationship with a heat sink (27) and configured for cooling said flue gas (12) exiting the expander unit (C); - a separator (F) for removing condensed species (15) from the cooled gas (14) exiting the cooler unit (E), thereby obtaining a recycled stream (18); and - a first compression unit (K) configured for increasing the pressure of said oxidant (26, 4, 8) to a value suitable for the SOFC unit (A) and the combustor unit (B).
Abstract:
The present disclosure provides systems and methods wherein power production can be achieved with combustion of a fuel utilizing flameless combustion. A fuel may be combusted in a combustor/turbine in a substantially flameless operation to produce a combustion product stream that can be expanded for power generation. After expansion, the output stream can be treated to generate a recycle CO 2 stream into which an oxidant can be input. The recycle CO 2 stream including the oxidant can be injected into the combustor/turbine to effect combustion in a substantially flameless state. Various control schemes can be implemented to automatically control the concentration of oxygen present in the recycle CO 2 stream that is injected into the combustor/turbine in order to achieve and/or maintain substantially flameless combustion.
Abstract:
The present disclosure relates to systems and methods wherein a dilute hydrocarbon stream can be oxidized to impart added energy to a power production system. The oxidation can be carried out without substantial combustion of the hydrocarbons. In this manner, dilute hydrocarbon streams that would otherwise be required to undergo costly separation processes can be efficiently utilized for improving the power production system and method. Such systems and methods particularly can utilize dilute hydrocarbon stream including a significant amount of carbon dioxide, such as may be produced in hydrocarbon recovery process, such as enhanced oil recovery or conventional hydrocarbon recovery processes.
Abstract:
A system includes a turbine combustor having a first volume (76) configured to receive a combustion fluid and to direct the combustion fluid into a combustion chamber. The turbine combustor includes a second volume (92) configured to receive a first flow of an exhaust gas and to direct the first flow of the exhaust gas into the combustion chamber. The turbine combustor also includes a third volume (96) disposed axially downstream from the first volume and circumferentially about the second volume. The third volume is configured to receive a second flow of the exhaust gas and to direct the second flow of the exhaust gas out of the turbine combustor via an extraction outlet, and the third volume is isolated from the first volume and from the second volume.
Abstract:
A gas turbine system includes a turbine combustor, a turbine, an exhaust gas compressor, an exhaust gas recirculation (EGR) system, a carbon black recovery system, and a carbon black production controller. The carbon black production controller monitors data corresponding to a parameter of the carbon black. The carbon black production controller is also configured to adjust, based on the data, the fuel provided to the turbine combustor while maintaining a ratio of the fuel to the oxidant within a predetermined range to adjust the parameter of the carbon black.
Abstract:
What is described is a method for operating a gas turbine power plant, in which fresh air (2) is delivered to a compressor inlet (3) and is accelerated in the compressor inlet (3) and a recirculated first exhaust gas substream (21) is delivered into a region of the compressor inlet (3) in which the fresh air (2) is accelerated to an extent such that the difference between total pressure and static pressure in the fresh air (2) is greater than or equal to a pressure difference which is required in order to suck a target mass flow of the recirculated first exhaust gas substream (21) into the compressor inlet (3). What is described, further, is a gas turbine power plant with a gas turbine (6), the compressor inlet of which is divided into two sectors (3', 3'') which the flow duct of the compressor (1) adjoins, a feeder for fresh air being connected to the first sector (3') and a recirculation line for recirculating the first exhaust gas substream (21) being connected to the second sector (3''), and the second sector (3''). reaching so close to the compressor (1) that, when the gas turbine (6) is in operation, the static pressure at the outlet of the second sector (3'') is so low that the difference between total pressure and static pressure is greater than or equal 20 to a pressure difference which is required in order to suck a target mass flow of the recirculated first exhaust gas substream (21) into the compressor inlet (3).